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_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 config MIPS_FIXUP_BIGPHYS_ADDR
98 menu "Machine selection"
105 bool "Generic board-agnostic MIPS kernel"
109 select CLKSRC_MIPS_GIC
111 select CPU_MIPSR2_IRQ_EI
112 select CPU_MIPSR2_IRQ_VI
114 select DMA_PERDEV_COHERENT
117 select MIPS_AUTO_PFN_OFFSET
118 select MIPS_CPU_SCACHE
120 select MIPS_L1_CACHE_SHIFT_7
121 select NO_EXCEPT_FILL
122 select PCI_DRIVERS_GENERIC
125 select SYS_HAS_CPU_MIPS32_R1
126 select SYS_HAS_CPU_MIPS32_R2
127 select SYS_HAS_CPU_MIPS32_R6
128 select SYS_HAS_CPU_MIPS64_R1
129 select SYS_HAS_CPU_MIPS64_R2
130 select SYS_HAS_CPU_MIPS64_R6
131 select SYS_SUPPORTS_32BIT_KERNEL
132 select SYS_SUPPORTS_64BIT_KERNEL
133 select SYS_SUPPORTS_BIG_ENDIAN
134 select SYS_SUPPORTS_HIGHMEM
135 select SYS_SUPPORTS_LITTLE_ENDIAN
136 select SYS_SUPPORTS_MICROMIPS
137 select SYS_SUPPORTS_MIPS16
138 select SYS_SUPPORTS_MIPS_CPS
139 select SYS_SUPPORTS_MULTITHREADING
140 select SYS_SUPPORTS_RELOCATABLE
141 select SYS_SUPPORTS_SMARTMIPS
143 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
144 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
145 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
146 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
147 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
148 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
151 Select this to build a kernel which aims to support multiple boards,
152 generally using a flattened device tree passed from the bootloader
153 using the boot protocol defined in the UHI (Unified Hosting
154 Interface) specification.
157 bool "Alchemy processor based machines"
158 select PHYS_ADDR_T_64BIT
162 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
163 select MIPS_FIXUP_BIGPHYS_ADDR if PCI
164 select SYS_HAS_CPU_MIPS32_R1
165 select SYS_SUPPORTS_32BIT_KERNEL
166 select SYS_SUPPORTS_APM_EMULATION
168 select SYS_SUPPORTS_ZBOOT
172 bool "Texas Instruments AR7"
174 select DMA_NONCOHERENT
178 select NO_EXCEPT_FILL
180 select SYS_HAS_CPU_MIPS32_R1
181 select SYS_HAS_EARLY_PRINTK
182 select SYS_SUPPORTS_32BIT_KERNEL
183 select SYS_SUPPORTS_LITTLE_ENDIAN
184 select SYS_SUPPORTS_MIPS16
185 select SYS_SUPPORTS_ZBOOT_UART16550
190 Support for the Texas Instruments AR7 System-on-a-Chip
191 family: TNETD7100, 7200 and 7300.
194 bool "Atheros AR231x/AR531x SoC support"
197 select DMA_NONCOHERENT
200 select SYS_HAS_CPU_MIPS32_R1
201 select SYS_SUPPORTS_BIG_ENDIAN
202 select SYS_SUPPORTS_32BIT_KERNEL
203 select SYS_HAS_EARLY_PRINTK
205 Support for Atheros AR231x and Atheros AR531x based boards
208 bool "Atheros AR71XX/AR724X/AR913X based boards"
209 select ARCH_HAS_RESET_CONTROLLER
213 select DMA_NONCOHERENT
220 select SYS_HAS_CPU_MIPS32_R2
221 select SYS_HAS_EARLY_PRINTK
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_BIG_ENDIAN
224 select SYS_SUPPORTS_MIPS16
225 select SYS_SUPPORTS_ZBOOT_UART_PROM
227 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
229 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
232 bool "Broadcom Generic BMIPS kernel"
233 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
234 select ARCH_HAS_PHYS_TO_DMA
236 select NO_EXCEPT_FILL
242 select BCM6345_L1_IRQ
243 select BCM7038_L1_IRQ
244 select BCM7120_L2_IRQ
245 select BRCMSTB_L2_IRQ
247 select DMA_NONCOHERENT
248 select SYS_SUPPORTS_32BIT_KERNEL
249 select SYS_SUPPORTS_LITTLE_ENDIAN
250 select SYS_SUPPORTS_BIG_ENDIAN
251 select SYS_SUPPORTS_HIGHMEM
252 select SYS_HAS_CPU_BMIPS32_3300
253 select SYS_HAS_CPU_BMIPS4350
254 select SYS_HAS_CPU_BMIPS4380
255 select SYS_HAS_CPU_BMIPS5000
257 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
258 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
259 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
260 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
261 select HARDIRQS_SW_RESEND
263 Build a generic DT-based kernel image that boots on select
264 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
265 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
266 must be set appropriately for your board.
269 bool "Broadcom BCM47XX based boards"
273 select DMA_NONCOHERENT
276 select SYS_HAS_CPU_MIPS32_R1
277 select NO_EXCEPT_FILL
278 select SYS_SUPPORTS_32BIT_KERNEL
279 select SYS_SUPPORTS_LITTLE_ENDIAN
280 select SYS_SUPPORTS_MIPS16
281 select SYS_SUPPORTS_ZBOOT
282 select SYS_HAS_EARLY_PRINTK
283 select USE_GENERIC_EARLY_PRINTK_8250
285 select LEDS_GPIO_REGISTER
288 select BCM47XX_SSB if !BCM47XX_BCMA
290 Support for BCM47XX based boards
293 bool "Broadcom BCM63XX based boards"
298 select DMA_NONCOHERENT
300 select SYS_SUPPORTS_32BIT_KERNEL
301 select SYS_SUPPORTS_BIG_ENDIAN
302 select SYS_HAS_EARLY_PRINTK
306 select MIPS_L1_CACHE_SHIFT_4
309 Support for BCM63XX based boards
316 select DMA_NONCOHERENT
322 select PCI_GT64XXX_PCI0
323 select SYS_HAS_CPU_NEVADA
324 select SYS_HAS_EARLY_PRINTK
325 select SYS_SUPPORTS_32BIT_KERNEL
326 select SYS_SUPPORTS_64BIT_KERNEL
327 select SYS_SUPPORTS_LITTLE_ENDIAN
328 select USE_GENERIC_EARLY_PRINTK_8250
330 config MACH_DECSTATION
334 select CEVT_R4K if CPU_R4X00
336 select CSRC_R4K if CPU_R4X00
337 select CPU_DADDI_WORKAROUNDS if 64BIT
338 select CPU_R4000_WORKAROUNDS if 64BIT
339 select CPU_R4400_WORKAROUNDS if 64BIT
340 select DMA_NONCOHERENT
343 select SYS_HAS_CPU_R3000
344 select SYS_HAS_CPU_R4X00
345 select SYS_SUPPORTS_32BIT_KERNEL
346 select SYS_SUPPORTS_64BIT_KERNEL
347 select SYS_SUPPORTS_LITTLE_ENDIAN
348 select SYS_SUPPORTS_128HZ
349 select SYS_SUPPORTS_256HZ
350 select SYS_SUPPORTS_1024HZ
351 select MIPS_L1_CACHE_SHIFT_4
353 This enables support for DEC's MIPS based workstations. For details
354 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
355 DECstation porting pages on <http://decstation.unix-ag.org/>.
357 If you have one of the following DECstation Models you definitely
358 want to choose R4xx0 for the CPU Type:
365 otherwise choose R3000.
368 bool "Jazz family of machines"
371 select ARCH_MIGHT_HAVE_PC_PARPORT
372 select ARCH_MIGHT_HAVE_PC_SERIO
375 select ARCH_MAY_HAVE_PC_FDC
378 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
379 select GENERIC_ISA_DMA
380 select HAVE_PCSPKR_PLATFORM
385 select SYS_HAS_CPU_R4X00
386 select SYS_SUPPORTS_32BIT_KERNEL
387 select SYS_SUPPORTS_64BIT_KERNEL
388 select SYS_SUPPORTS_100HZ
390 This a family of machines based on the MIPS R4030 chipset which was
391 used by several vendors to build RISC/os and Windows NT workstations.
392 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
393 Olivetti M700-10 workstations.
396 bool "Ingenic SoC based machines"
397 select SYS_SUPPORTS_32BIT_KERNEL
398 select SYS_SUPPORTS_LITTLE_ENDIAN
399 select SYS_SUPPORTS_ZBOOT_UART16550
400 select CPU_SUPPORTS_HUGEPAGES
401 select DMA_NONCOHERENT
406 select GENERIC_IRQ_CHIP
407 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
411 bool "Lantiq based platforms"
412 select DMA_NONCOHERENT
416 select SYS_HAS_CPU_MIPS32_R1
417 select SYS_HAS_CPU_MIPS32_R2
418 select SYS_SUPPORTS_BIG_ENDIAN
419 select SYS_SUPPORTS_32BIT_KERNEL
420 select SYS_SUPPORTS_MIPS16
421 select SYS_SUPPORTS_MULTITHREADING
422 select SYS_SUPPORTS_VPE_LOADER
423 select SYS_HAS_EARLY_PRINTK
430 select PINCTRL_LANTIQ
431 select ARCH_HAS_RESET_CONTROLLER
432 select RESET_CONTROLLER
434 config MACH_LOONGSON32
435 bool "Loongson 32-bit family of machines"
436 select SYS_SUPPORTS_ZBOOT
438 This enables support for the Loongson-1 family of machines.
440 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
441 the Institute of Computing Technology (ICT), Chinese Academy of
444 config MACH_LOONGSON2EF
445 bool "Loongson-2E/F family of machines"
446 select SYS_SUPPORTS_ZBOOT
448 This enables the support of early Loongson-2E/F family of machines.
450 config MACH_LOONGSON64
451 bool "Loongson 64-bit family of machines"
452 select ARCH_SPARSEMEM_ENABLE
453 select ARCH_MIGHT_HAVE_PC_PARPORT
454 select ARCH_MIGHT_HAVE_PC_SERIO
455 select GENERIC_ISA_DMA_SUPPORT_BROKEN
465 select NR_CPUS_DEFAULT_64
466 select USE_GENERIC_EARLY_PRINTK_8250
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
482 This enables the support of Loongson-2/3 family of machines.
484 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
485 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
486 and Loongson-2F which will be removed), developed by the Institute
487 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
489 config MACH_PISTACHIO
490 bool "IMG Pistachio SoC based boards"
494 select CLKSRC_MIPS_GIC
497 select DMA_NONCOHERENT
501 select MIPS_CPU_SCACHE
505 select SYS_HAS_CPU_MIPS32_R2
506 select SYS_SUPPORTS_32BIT_KERNEL
507 select SYS_SUPPORTS_LITTLE_ENDIAN
508 select SYS_SUPPORTS_MIPS_CPS
509 select SYS_SUPPORTS_MULTITHREADING
510 select SYS_SUPPORTS_RELOCATABLE
511 select SYS_SUPPORTS_ZBOOT
512 select SYS_HAS_EARLY_PRINTK
513 select USE_GENERIC_EARLY_PRINTK_8250
516 This enables support for the IMG Pistachio SoC platform.
519 bool "MIPS Malta board"
520 select ARCH_MAY_HAVE_PC_FDC
521 select ARCH_MIGHT_HAVE_PC_PARPORT
522 select ARCH_MIGHT_HAVE_PC_SERIO
527 select CLKSRC_MIPS_GIC
530 select DMA_MAYBE_COHERENT
531 select GENERIC_ISA_DMA
532 select HAVE_PCSPKR_PLATFORM
538 select MIPS_CPU_SCACHE
540 select MIPS_L1_CACHE_SHIFT_6
542 select PCI_GT64XXX_PCI0
545 select SYS_HAS_CPU_MIPS32_R1
546 select SYS_HAS_CPU_MIPS32_R2
547 select SYS_HAS_CPU_MIPS32_R3_5
548 select SYS_HAS_CPU_MIPS32_R5
549 select SYS_HAS_CPU_MIPS32_R6
550 select SYS_HAS_CPU_MIPS64_R1
551 select SYS_HAS_CPU_MIPS64_R2
552 select SYS_HAS_CPU_MIPS64_R6
553 select SYS_HAS_CPU_NEVADA
554 select SYS_HAS_CPU_RM7000
555 select SYS_SUPPORTS_32BIT_KERNEL
556 select SYS_SUPPORTS_64BIT_KERNEL
557 select SYS_SUPPORTS_BIG_ENDIAN
558 select SYS_SUPPORTS_HIGHMEM
559 select SYS_SUPPORTS_LITTLE_ENDIAN
560 select SYS_SUPPORTS_MICROMIPS
561 select SYS_SUPPORTS_MIPS16
562 select SYS_SUPPORTS_MIPS_CMP
563 select SYS_SUPPORTS_MIPS_CPS
564 select SYS_SUPPORTS_MULTITHREADING
565 select SYS_SUPPORTS_RELOCATABLE
566 select SYS_SUPPORTS_SMARTMIPS
567 select SYS_SUPPORTS_VPE_LOADER
568 select SYS_SUPPORTS_ZBOOT
570 select ZONE_DMA32 if 64BIT
572 This enables support for the MIPS Technologies Malta evaluation
576 bool "Microchip PIC32 Family"
578 This enables support for the Microchip PIC32 family of platforms.
580 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
584 bool "NEC EMMA2RH Mark-eins board"
588 This enables support for the NEC Electronics Mark-eins boards.
591 bool "NEC VR4100 series based machines"
594 select SYS_HAS_CPU_VR41XX
595 select SYS_SUPPORTS_MIPS16
599 bool "NXP STB220 board"
602 Support for NXP Semiconductors STB220 Development Board.
609 Support for NXP Semiconductors STB225 Development Board.
612 bool "PMC-Sierra MSP chipsets"
615 select DMA_NONCOHERENT
617 select NO_EXCEPT_FILL
619 select SYS_HAS_CPU_MIPS32_R1
620 select SYS_HAS_CPU_MIPS32_R2
621 select SYS_SUPPORTS_32BIT_KERNEL
622 select SYS_SUPPORTS_BIG_ENDIAN
623 select SYS_SUPPORTS_MIPS16
626 select SERIAL_8250_CONSOLE
627 select USB_EHCI_BIG_ENDIAN_MMIO
628 select USB_EHCI_BIG_ENDIAN_DESC
630 This adds support for the PMC-Sierra family of Multi-Service
631 Processor System-On-A-Chips. These parts include a number
632 of integrated peripherals, interfaces and DSPs in addition to
633 a variety of MIPS cores.
636 bool "Ralink based machines"
640 select DMA_NONCOHERENT
643 select SYS_HAS_CPU_MIPS32_R1
644 select SYS_HAS_CPU_MIPS32_R2
645 select SYS_SUPPORTS_32BIT_KERNEL
646 select SYS_SUPPORTS_LITTLE_ENDIAN
647 select SYS_SUPPORTS_MIPS16
648 select SYS_HAS_EARLY_PRINTK
650 select ARCH_HAS_RESET_CONTROLLER
651 select RESET_CONTROLLER
654 bool "SGI IP22 (Indy/Indigo2)"
659 select ARCH_MIGHT_HAVE_PC_SERIO
663 select DEFAULT_SGI_PARTITION
664 select DMA_NONCOHERENT
668 select IP22_CPU_SCACHE
670 select GENERIC_ISA_DMA_SUPPORT_BROKEN
672 select SGI_HAS_INDYDOG
678 select SYS_HAS_CPU_R4X00
679 select SYS_HAS_CPU_R5000
680 select SYS_HAS_EARLY_PRINTK
681 select SYS_SUPPORTS_32BIT_KERNEL
682 select SYS_SUPPORTS_64BIT_KERNEL
683 select SYS_SUPPORTS_BIG_ENDIAN
684 select MIPS_L1_CACHE_SHIFT_7
686 This are the SGI Indy, Challenge S and Indigo2, as well as certain
687 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
688 that runs on these, say Y here.
691 bool "SGI IP27 (Origin200/2000)"
692 select ARCH_HAS_PHYS_TO_DMA
693 select ARCH_SPARSEMEM_ENABLE
696 select ARC_CMDLINE_ONLY
698 select DEFAULT_SGI_PARTITION
699 select SYS_HAS_EARLY_PRINTK
702 select IRQ_DOMAIN_HIERARCHY
703 select NR_CPUS_DEFAULT_64
704 select PCI_DRIVERS_GENERIC
705 select PCI_XTALK_BRIDGE
706 select SYS_HAS_CPU_R10000
707 select SYS_SUPPORTS_64BIT_KERNEL
708 select SYS_SUPPORTS_BIG_ENDIAN
709 select SYS_SUPPORTS_NUMA
710 select SYS_SUPPORTS_SMP
711 select MIPS_L1_CACHE_SHIFT_7
713 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
714 workstations. To compile a Linux kernel that runs on these, say Y
718 bool "SGI IP28 (Indigo2 R10k)"
723 select ARCH_MIGHT_HAVE_PC_SERIO
727 select DEFAULT_SGI_PARTITION
728 select DMA_NONCOHERENT
729 select GENERIC_ISA_DMA_SUPPORT_BROKEN
735 select SGI_HAS_INDYDOG
741 select SYS_HAS_CPU_R10000
742 select SYS_HAS_EARLY_PRINTK
743 select SYS_SUPPORTS_64BIT_KERNEL
744 select SYS_SUPPORTS_BIG_ENDIAN
745 select MIPS_L1_CACHE_SHIFT_7
747 This is the SGI Indigo2 with R10000 processor. To compile a Linux
748 kernel that runs on these, say Y here.
751 bool "SGI IP30 (Octane/Octane2)"
752 select ARCH_HAS_PHYS_TO_DMA
758 select SYNC_R4K if SMP
762 select IRQ_DOMAIN_HIERARCHY
763 select NR_CPUS_DEFAULT_2
764 select PCI_DRIVERS_GENERIC
765 select PCI_XTALK_BRIDGE
766 select SYS_HAS_EARLY_PRINTK
767 select SYS_HAS_CPU_R10000
768 select SYS_SUPPORTS_64BIT_KERNEL
769 select SYS_SUPPORTS_BIG_ENDIAN
770 select SYS_SUPPORTS_SMP
771 select MIPS_L1_CACHE_SHIFT_7
774 These are the SGI Octane and Octane2 graphics workstations. To
775 compile a Linux kernel that runs on these, say Y here.
781 select ARCH_HAS_PHYS_TO_DMA
787 select DMA_NONCOHERENT
790 select R5000_CPU_SCACHE
791 select RM7000_CPU_SCACHE
792 select SYS_HAS_CPU_R5000
793 select SYS_HAS_CPU_R10000 if BROKEN
794 select SYS_HAS_CPU_RM7000
795 select SYS_HAS_CPU_NEVADA
796 select SYS_SUPPORTS_64BIT_KERNEL
797 select SYS_SUPPORTS_BIG_ENDIAN
799 If you want this kernel to run on SGI O2 workstation, say Y here.
802 bool "Sibyte BCM91120C-CRhine"
804 select SIBYTE_BCM1120
806 select SYS_HAS_CPU_SB1
807 select SYS_SUPPORTS_BIG_ENDIAN
808 select SYS_SUPPORTS_LITTLE_ENDIAN
811 bool "Sibyte BCM91120x-Carmel"
813 select SIBYTE_BCM1120
815 select SYS_HAS_CPU_SB1
816 select SYS_SUPPORTS_BIG_ENDIAN
817 select SYS_SUPPORTS_LITTLE_ENDIAN
820 bool "Sibyte BCM91125C-CRhone"
822 select SIBYTE_BCM1125
824 select SYS_HAS_CPU_SB1
825 select SYS_SUPPORTS_BIG_ENDIAN
826 select SYS_SUPPORTS_HIGHMEM
827 select SYS_SUPPORTS_LITTLE_ENDIAN
830 bool "Sibyte BCM91125E-Rhone"
832 select SIBYTE_BCM1125H
834 select SYS_HAS_CPU_SB1
835 select SYS_SUPPORTS_BIG_ENDIAN
836 select SYS_SUPPORTS_LITTLE_ENDIAN
839 bool "Sibyte BCM91250A-SWARM"
841 select HAVE_PATA_PLATFORM
844 select SYS_HAS_CPU_SB1
845 select SYS_SUPPORTS_BIG_ENDIAN
846 select SYS_SUPPORTS_HIGHMEM
847 select SYS_SUPPORTS_LITTLE_ENDIAN
848 select ZONE_DMA32 if 64BIT
849 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
851 config SIBYTE_LITTLESUR
852 bool "Sibyte BCM91250C2-LittleSur"
854 select HAVE_PATA_PLATFORM
857 select SYS_HAS_CPU_SB1
858 select SYS_SUPPORTS_BIG_ENDIAN
859 select SYS_SUPPORTS_HIGHMEM
860 select SYS_SUPPORTS_LITTLE_ENDIAN
861 select ZONE_DMA32 if 64BIT
863 config SIBYTE_SENTOSA
864 bool "Sibyte BCM91250E-Sentosa"
868 select SYS_HAS_CPU_SB1
869 select SYS_SUPPORTS_BIG_ENDIAN
870 select SYS_SUPPORTS_LITTLE_ENDIAN
871 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
874 bool "Sibyte BCM91480B-BigSur"
876 select NR_CPUS_DEFAULT_4
877 select SIBYTE_BCM1x80
879 select SYS_HAS_CPU_SB1
880 select SYS_SUPPORTS_BIG_ENDIAN
881 select SYS_SUPPORTS_HIGHMEM
882 select SYS_SUPPORTS_LITTLE_ENDIAN
883 select ZONE_DMA32 if 64BIT
884 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
887 bool "SNI RM200/300/400"
890 select FW_ARC if CPU_LITTLE_ENDIAN
891 select FW_ARC32 if CPU_LITTLE_ENDIAN
892 select FW_SNIPROM if CPU_BIG_ENDIAN
893 select ARCH_MAY_HAVE_PC_FDC
894 select ARCH_MIGHT_HAVE_PC_PARPORT
895 select ARCH_MIGHT_HAVE_PC_SERIO
899 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
900 select DMA_NONCOHERENT
901 select GENERIC_ISA_DMA
903 select HAVE_PCSPKR_PLATFORM
909 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
910 select SYS_HAS_CPU_R4X00
911 select SYS_HAS_CPU_R5000
912 select SYS_HAS_CPU_R10000
913 select R5000_CPU_SCACHE
914 select SYS_HAS_EARLY_PRINTK
915 select SYS_SUPPORTS_32BIT_KERNEL
916 select SYS_SUPPORTS_64BIT_KERNEL
917 select SYS_SUPPORTS_BIG_ENDIAN
918 select SYS_SUPPORTS_HIGHMEM
919 select SYS_SUPPORTS_LITTLE_ENDIAN
921 The SNI RM200/300/400 are MIPS-based machines manufactured by
922 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
923 Technology and now in turn merged with Fujitsu. Say Y here to
924 support this machine type.
927 bool "Toshiba TX39 series based machines"
930 bool "Toshiba TX49 series based machines"
932 config MIKROTIK_RB532
933 bool "Mikrotik RB532 boards"
936 select DMA_NONCOHERENT
939 select SYS_HAS_CPU_MIPS32_R1
940 select SYS_SUPPORTS_32BIT_KERNEL
941 select SYS_SUPPORTS_LITTLE_ENDIAN
945 select MIPS_L1_CACHE_SHIFT_4
947 Support the Mikrotik(tm) RouterBoard 532 series,
948 based on the IDT RC32434 SoC.
950 config CAVIUM_OCTEON_SOC
951 bool "Cavium Networks Octeon SoC based boards"
953 select ARCH_HAS_PHYS_TO_DMA
955 select PHYS_ADDR_T_64BIT
956 select SYS_SUPPORTS_64BIT_KERNEL
957 select SYS_SUPPORTS_BIG_ENDIAN
959 select EDAC_ATOMIC_SCRUB
960 select SYS_SUPPORTS_LITTLE_ENDIAN
961 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
962 select SYS_HAS_EARLY_PRINTK
963 select SYS_HAS_CPU_CAVIUM_OCTEON
965 select HAVE_PLAT_DELAY
966 select HAVE_PLAT_FW_INIT_CMDLINE
967 select HAVE_PLAT_MEMCPY
972 select ARCH_SPARSEMEM_ENABLE
973 select SYS_SUPPORTS_SMP
974 select NR_CPUS_DEFAULT_64
975 select MIPS_NR_CPU_NR_MAP_1024
977 select MTD_COMPLEX_MAPPINGS
979 select SYS_SUPPORTS_RELOCATABLE
981 This option supports all of the Octeon reference boards from Cavium
982 Networks. It builds a kernel that dynamically determines the Octeon
983 CPU type and supports all known board reference implementations.
984 Some of the supported boards are:
991 Say Y here for most Octeon reference boards.
994 bool "Netlogic XLR/XLS based systems"
997 select SYS_HAS_CPU_XLR
998 select SYS_SUPPORTS_SMP
1000 select SWAP_IO_SPACE
1001 select SYS_SUPPORTS_32BIT_KERNEL
1002 select SYS_SUPPORTS_64BIT_KERNEL
1003 select PHYS_ADDR_T_64BIT
1004 select SYS_SUPPORTS_BIG_ENDIAN
1005 select SYS_SUPPORTS_HIGHMEM
1006 select NR_CPUS_DEFAULT_32
1010 select ZONE_DMA32 if 64BIT
1012 select SYS_HAS_EARLY_PRINTK
1013 select SYS_SUPPORTS_ZBOOT
1014 select SYS_SUPPORTS_ZBOOT_UART16550
1016 Support for systems based on Netlogic XLR and XLS processors.
1017 Say Y here if you have a XLR or XLS based board.
1019 config NLM_XLP_BOARD
1020 bool "Netlogic XLP based systems"
1023 select SYS_HAS_CPU_XLP
1024 select SYS_SUPPORTS_SMP
1026 select SYS_SUPPORTS_32BIT_KERNEL
1027 select SYS_SUPPORTS_64BIT_KERNEL
1028 select PHYS_ADDR_T_64BIT
1030 select SYS_SUPPORTS_BIG_ENDIAN
1031 select SYS_SUPPORTS_LITTLE_ENDIAN
1032 select SYS_SUPPORTS_HIGHMEM
1033 select NR_CPUS_DEFAULT_32
1037 select ZONE_DMA32 if 64BIT
1039 select SYS_HAS_EARLY_PRINTK
1041 select SYS_SUPPORTS_ZBOOT
1042 select SYS_SUPPORTS_ZBOOT_UART16550
1044 This board is based on Netlogic XLP Processor.
1045 Say Y here if you have a XLP based board.
1047 config MIPS_PARAVIRT
1048 bool "Para-Virtualized guest system"
1051 select SYS_SUPPORTS_64BIT_KERNEL
1052 select SYS_SUPPORTS_32BIT_KERNEL
1053 select SYS_SUPPORTS_BIG_ENDIAN
1054 select SYS_SUPPORTS_SMP
1055 select NR_CPUS_DEFAULT_4
1056 select SYS_HAS_EARLY_PRINTK
1057 select SYS_HAS_CPU_MIPS32_R2
1058 select SYS_HAS_CPU_MIPS64_R2
1059 select SYS_HAS_CPU_CAVIUM_OCTEON
1061 select SWAP_IO_SPACE
1063 This option supports guest running under ????
1067 source "arch/mips/alchemy/Kconfig"
1068 source "arch/mips/ath25/Kconfig"
1069 source "arch/mips/ath79/Kconfig"
1070 source "arch/mips/bcm47xx/Kconfig"
1071 source "arch/mips/bcm63xx/Kconfig"
1072 source "arch/mips/bmips/Kconfig"
1073 source "arch/mips/generic/Kconfig"
1074 source "arch/mips/jazz/Kconfig"
1075 source "arch/mips/jz4740/Kconfig"
1076 source "arch/mips/lantiq/Kconfig"
1077 source "arch/mips/pic32/Kconfig"
1078 source "arch/mips/pistachio/Kconfig"
1079 source "arch/mips/pmcs-msp71xx/Kconfig"
1080 source "arch/mips/ralink/Kconfig"
1081 source "arch/mips/sgi-ip27/Kconfig"
1082 source "arch/mips/sibyte/Kconfig"
1083 source "arch/mips/txx9/Kconfig"
1084 source "arch/mips/vr41xx/Kconfig"
1085 source "arch/mips/cavium-octeon/Kconfig"
1086 source "arch/mips/loongson2ef/Kconfig"
1087 source "arch/mips/loongson32/Kconfig"
1088 source "arch/mips/loongson64/Kconfig"
1089 source "arch/mips/netlogic/Kconfig"
1090 source "arch/mips/paravirt/Kconfig"
1094 config GENERIC_HWEIGHT
1098 config GENERIC_CALIBRATE_DELAY
1102 config SCHED_OMIT_FRAME_POINTER
1107 # Select some configuration options automatically based on user selections.
1112 config ARCH_MAY_HAVE_PC_FDC
1148 config MIPS_CLOCK_VSYSCALL
1149 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1158 config ARCH_SUPPORTS_UPROBES
1161 config DMA_MAYBE_COHERENT
1162 select ARCH_HAS_DMA_COHERENCE_H
1163 select DMA_NONCOHERENT
1166 config DMA_PERDEV_COHERENT
1168 select ARCH_HAS_SETUP_DMA_OPS
1169 select DMA_NONCOHERENT
1171 config DMA_NONCOHERENT
1174 # MIPS allows mixing "slightly different" Cacheability and Coherency
1175 # Attribute bits. It is believed that the uncached access through
1176 # KSEG1 and the implementation specific "uncached accelerated" used
1177 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1178 # significant advantages.
1180 select ARCH_HAS_DMA_WRITE_COMBINE
1181 select ARCH_HAS_DMA_PREP_COHERENT
1182 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1183 select ARCH_HAS_DMA_SET_UNCACHED
1184 select DMA_NONCOHERENT_MMAP
1185 select DMA_NONCOHERENT_CACHE_SYNC
1186 select NEED_DMA_MAP_STATE
1188 config SYS_HAS_EARLY_PRINTK
1191 config SYS_SUPPORTS_HOTPLUG_CPU
1194 config MIPS_BONITO64
1206 config NO_IOPORT_MAP
1210 def_bool CPU_NO_LOAD_STORE_LR
1212 config GENERIC_ISA_DMA
1214 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1217 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1219 select GENERIC_ISA_DMA
1221 config HAVE_PLAT_DELAY
1224 config HAVE_PLAT_FW_INIT_CMDLINE
1227 config HAVE_PLAT_MEMCPY
1233 config HOLES_IN_ZONE
1236 config SYS_SUPPORTS_RELOCATABLE
1239 Selected if the platform supports relocating the kernel.
1240 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1241 to allow access to command line and entropy sources.
1243 config MIPS_CBPF_JIT
1245 depends on BPF_JIT && HAVE_CBPF_JIT
1247 config MIPS_EBPF_JIT
1249 depends on BPF_JIT && HAVE_EBPF_JIT
1253 # Endianness selection. Sufficiently obscure so many users don't know what to
1254 # answer,so we try hard to limit the available choices. Also the use of a
1255 # choice statement should be more obvious to the user.
1258 prompt "Endianness selection"
1260 Some MIPS machines can be configured for either little or big endian
1261 byte order. These modes require different kernels and a different
1262 Linux distribution. In general there is one preferred byteorder for a
1263 particular system but some systems are just as commonly used in the
1264 one or the other endianness.
1266 config CPU_BIG_ENDIAN
1268 depends on SYS_SUPPORTS_BIG_ENDIAN
1270 config CPU_LITTLE_ENDIAN
1271 bool "Little endian"
1272 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1279 config SYS_SUPPORTS_APM_EMULATION
1282 config SYS_SUPPORTS_BIG_ENDIAN
1285 config SYS_SUPPORTS_LITTLE_ENDIAN
1288 config SYS_SUPPORTS_HUGETLBFS
1290 depends on CPU_SUPPORTS_HUGEPAGES
1293 config MIPS_HUGE_TLB_SUPPORT
1294 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1311 config PCI_GT64XXX_PCI0
1314 config PCI_XTALK_BRIDGE
1317 config NO_EXCEPT_FILL
1324 select DMA_NONCOHERENT
1326 select SWAP_IO_SPACE
1327 select SYS_HAS_CPU_R5500
1328 select SYS_SUPPORTS_32BIT_KERNEL
1329 select SYS_SUPPORTS_64BIT_KERNEL
1330 select SYS_SUPPORTS_BIG_ENDIAN
1337 select DMA_NONCOHERENT
1338 select SYS_HAS_CPU_MIPS32_R2
1339 select SYS_SUPPORTS_32BIT_KERNEL
1340 select SYS_SUPPORTS_LITTLE_ENDIAN
1341 select SYS_SUPPORTS_BIG_ENDIAN
1342 select SYS_SUPPORTS_MIPS16
1343 select CPU_MIPSR2_IRQ_VI
1352 config SWAP_IO_SPACE
1355 config SGI_HAS_INDYDOG
1367 config SGI_HAS_ZILOG
1370 config SGI_HAS_I8042
1373 config DEFAULT_SGI_PARTITION
1385 config MIPS_L1_CACHE_SHIFT_4
1388 config MIPS_L1_CACHE_SHIFT_5
1391 config MIPS_L1_CACHE_SHIFT_6
1394 config MIPS_L1_CACHE_SHIFT_7
1397 config MIPS_L1_CACHE_SHIFT
1399 default "7" if MIPS_L1_CACHE_SHIFT_7
1400 default "6" if MIPS_L1_CACHE_SHIFT_6
1401 default "5" if MIPS_L1_CACHE_SHIFT_5
1402 default "4" if MIPS_L1_CACHE_SHIFT_4
1405 config HAVE_STD_PC_SERIAL_PORT
1408 config ARC_CMDLINE_ONLY
1412 bool "ARC console support"
1413 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1427 menu "CPU selection"
1433 config CPU_LOONGSON64
1434 bool "Loongson 64-bit CPU"
1435 depends on SYS_HAS_CPU_LOONGSON64
1436 select ARCH_HAS_PHYS_TO_DMA
1438 select CPU_HAS_PREFETCH
1439 select CPU_SUPPORTS_64BIT_KERNEL
1440 select CPU_SUPPORTS_HIGHMEM
1441 select CPU_SUPPORTS_HUGEPAGES
1442 select CPU_SUPPORTS_MSA
1443 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1444 select CPU_MIPSR2_IRQ_VI
1445 select WEAK_ORDERING
1446 select WEAK_REORDERING_BEYOND_LLSC
1447 select MIPS_ASID_BITS_VARIABLE
1448 select MIPS_PGD_C0_CONTEXT
1449 select MIPS_L1_CACHE_SHIFT_6
1453 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1454 cores implements the MIPS64R2 instruction set with many extensions,
1455 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1456 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1457 Loongson-2E/2F is not covered here and will be removed in future.
1459 config LOONGSON3_ENHANCEMENT
1460 bool "New Loongson-3 CPU Enhancements"
1462 depends on CPU_LOONGSON64
1464 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1465 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1466 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1467 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1468 Fast TLB refill support, etc.
1470 This option enable those enhancements which are not probed at run
1471 time. If you want a generic kernel to run on all Loongson 3 machines,
1472 please say 'N' here. If you want a high-performance kernel to run on
1473 new Loongson-3 machines only, please say 'Y' here.
1475 config CPU_LOONGSON3_WORKAROUNDS
1476 bool "Old Loongson-3 LLSC Workarounds"
1478 depends on CPU_LOONGSON64
1480 Loongson-3 processors have the llsc issues which require workarounds.
1481 Without workarounds the system may hang unexpectedly.
1483 Newer Loongson-3 will fix these issues and no workarounds are needed.
1484 The workarounds have no significant side effect on them but may
1485 decrease the performance of the system so this option should be
1486 disabled unless the kernel is intended to be run on old systems.
1488 If unsure, please say Y.
1490 config CPU_LOONGSON2E
1492 depends on SYS_HAS_CPU_LOONGSON2E
1493 select CPU_LOONGSON2EF
1495 The Loongson 2E processor implements the MIPS III instruction set
1496 with many extensions.
1498 It has an internal FPGA northbridge, which is compatible to
1501 config CPU_LOONGSON2F
1503 depends on SYS_HAS_CPU_LOONGSON2F
1504 select CPU_LOONGSON2EF
1507 The Loongson 2F processor implements the MIPS III instruction set
1508 with many extensions.
1510 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1511 have a similar programming interface with FPGA northbridge used in
1514 config CPU_LOONGSON1B
1516 depends on SYS_HAS_CPU_LOONGSON1B
1517 select CPU_LOONGSON32
1518 select LEDS_GPIO_REGISTER
1520 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1521 Release 1 instruction set and part of the MIPS32 Release 2
1524 config CPU_LOONGSON1C
1526 depends on SYS_HAS_CPU_LOONGSON1C
1527 select CPU_LOONGSON32
1528 select LEDS_GPIO_REGISTER
1530 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1531 Release 1 instruction set and part of the MIPS32 Release 2
1534 config CPU_MIPS32_R1
1535 bool "MIPS32 Release 1"
1536 depends on SYS_HAS_CPU_MIPS32_R1
1537 select CPU_HAS_PREFETCH
1538 select CPU_SUPPORTS_32BIT_KERNEL
1539 select CPU_SUPPORTS_HIGHMEM
1541 Choose this option to build a kernel for release 1 or later of the
1542 MIPS32 architecture. Most modern embedded systems with a 32-bit
1543 MIPS processor are based on a MIPS32 processor. If you know the
1544 specific type of processor in your system, choose those that one
1545 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1546 Release 2 of the MIPS32 architecture is available since several
1547 years so chances are you even have a MIPS32 Release 2 processor
1548 in which case you should choose CPU_MIPS32_R2 instead for better
1551 config CPU_MIPS32_R2
1552 bool "MIPS32 Release 2"
1553 depends on SYS_HAS_CPU_MIPS32_R2
1554 select CPU_HAS_PREFETCH
1555 select CPU_SUPPORTS_32BIT_KERNEL
1556 select CPU_SUPPORTS_HIGHMEM
1557 select CPU_SUPPORTS_MSA
1560 Choose this option to build a kernel for release 2 or later of the
1561 MIPS32 architecture. Most modern embedded systems with a 32-bit
1562 MIPS processor are based on a MIPS32 processor. If you know the
1563 specific type of processor in your system, choose those that one
1564 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1566 config CPU_MIPS32_R6
1567 bool "MIPS32 Release 6"
1568 depends on SYS_HAS_CPU_MIPS32_R6
1569 select CPU_HAS_PREFETCH
1570 select CPU_NO_LOAD_STORE_LR
1571 select CPU_SUPPORTS_32BIT_KERNEL
1572 select CPU_SUPPORTS_HIGHMEM
1573 select CPU_SUPPORTS_MSA
1575 select MIPS_O32_FP64_SUPPORT
1577 Choose this option to build a kernel for release 6 or later of the
1578 MIPS32 architecture. New MIPS processors, starting with the Warrior
1579 family, are based on a MIPS32r6 processor. If you own an older
1580 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1582 config CPU_MIPS64_R1
1583 bool "MIPS64 Release 1"
1584 depends on SYS_HAS_CPU_MIPS64_R1
1585 select CPU_HAS_PREFETCH
1586 select CPU_SUPPORTS_32BIT_KERNEL
1587 select CPU_SUPPORTS_64BIT_KERNEL
1588 select CPU_SUPPORTS_HIGHMEM
1589 select CPU_SUPPORTS_HUGEPAGES
1591 Choose this option to build a kernel for release 1 or later of the
1592 MIPS64 architecture. Many modern embedded systems with a 64-bit
1593 MIPS processor are based on a MIPS64 processor. If you know the
1594 specific type of processor in your system, choose those that one
1595 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1596 Release 2 of the MIPS64 architecture is available since several
1597 years so chances are you even have a MIPS64 Release 2 processor
1598 in which case you should choose CPU_MIPS64_R2 instead for better
1601 config CPU_MIPS64_R2
1602 bool "MIPS64 Release 2"
1603 depends on SYS_HAS_CPU_MIPS64_R2
1604 select CPU_HAS_PREFETCH
1605 select CPU_SUPPORTS_32BIT_KERNEL
1606 select CPU_SUPPORTS_64BIT_KERNEL
1607 select CPU_SUPPORTS_HIGHMEM
1608 select CPU_SUPPORTS_HUGEPAGES
1609 select CPU_SUPPORTS_MSA
1612 Choose this option to build a kernel for release 2 or later of the
1613 MIPS64 architecture. Many modern embedded systems with a 64-bit
1614 MIPS processor are based on a MIPS64 processor. If you know the
1615 specific type of processor in your system, choose those that one
1616 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1618 config CPU_MIPS64_R6
1619 bool "MIPS64 Release 6"
1620 depends on SYS_HAS_CPU_MIPS64_R6
1621 select CPU_HAS_PREFETCH
1622 select CPU_NO_LOAD_STORE_LR
1623 select CPU_SUPPORTS_32BIT_KERNEL
1624 select CPU_SUPPORTS_64BIT_KERNEL
1625 select CPU_SUPPORTS_HIGHMEM
1626 select CPU_SUPPORTS_HUGEPAGES
1627 select CPU_SUPPORTS_MSA
1628 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1631 Choose this option to build a kernel for release 6 or later of the
1632 MIPS64 architecture. New MIPS processors, starting with the Warrior
1633 family, are based on a MIPS64r6 processor. If you own an older
1634 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1638 depends on SYS_HAS_CPU_R3000
1641 select CPU_SUPPORTS_32BIT_KERNEL
1642 select CPU_SUPPORTS_HIGHMEM
1644 Please make sure to pick the right CPU type. Linux/MIPS is not
1645 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1646 *not* work on R4000 machines and vice versa. However, since most
1647 of the supported machines have an R4000 (or similar) CPU, R4x00
1648 might be a safe bet. If the resulting kernel does not work,
1649 try to recompile with R3000.
1653 depends on SYS_HAS_CPU_TX39XX
1654 select CPU_SUPPORTS_32BIT_KERNEL
1659 depends on SYS_HAS_CPU_VR41XX
1660 select CPU_SUPPORTS_32BIT_KERNEL
1661 select CPU_SUPPORTS_64BIT_KERNEL
1663 The options selects support for the NEC VR4100 series of processors.
1664 Only choose this option if you have one of these processors as a
1665 kernel built with this option will not run on any other type of
1666 processor or vice versa.
1670 depends on SYS_HAS_CPU_R4X00
1671 select CPU_SUPPORTS_32BIT_KERNEL
1672 select CPU_SUPPORTS_64BIT_KERNEL
1673 select CPU_SUPPORTS_HUGEPAGES
1675 MIPS Technologies R4000-series processors other than 4300, including
1676 the R4000, R4400, R4600, and 4700.
1680 depends on SYS_HAS_CPU_TX49XX
1681 select CPU_HAS_PREFETCH
1682 select CPU_SUPPORTS_32BIT_KERNEL
1683 select CPU_SUPPORTS_64BIT_KERNEL
1684 select CPU_SUPPORTS_HUGEPAGES
1688 depends on SYS_HAS_CPU_R5000
1689 select CPU_SUPPORTS_32BIT_KERNEL
1690 select CPU_SUPPORTS_64BIT_KERNEL
1691 select CPU_SUPPORTS_HUGEPAGES
1693 MIPS Technologies R5000-series processors other than the Nevada.
1697 depends on SYS_HAS_CPU_R5500
1698 select CPU_SUPPORTS_32BIT_KERNEL
1699 select CPU_SUPPORTS_64BIT_KERNEL
1700 select CPU_SUPPORTS_HUGEPAGES
1702 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1707 depends on SYS_HAS_CPU_NEVADA
1708 select CPU_SUPPORTS_32BIT_KERNEL
1709 select CPU_SUPPORTS_64BIT_KERNEL
1710 select CPU_SUPPORTS_HUGEPAGES
1712 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1716 depends on SYS_HAS_CPU_R10000
1717 select CPU_HAS_PREFETCH
1718 select CPU_SUPPORTS_32BIT_KERNEL
1719 select CPU_SUPPORTS_64BIT_KERNEL
1720 select CPU_SUPPORTS_HIGHMEM
1721 select CPU_SUPPORTS_HUGEPAGES
1723 MIPS Technologies R10000-series processors.
1727 depends on SYS_HAS_CPU_RM7000
1728 select CPU_HAS_PREFETCH
1729 select CPU_SUPPORTS_32BIT_KERNEL
1730 select CPU_SUPPORTS_64BIT_KERNEL
1731 select CPU_SUPPORTS_HIGHMEM
1732 select CPU_SUPPORTS_HUGEPAGES
1736 depends on SYS_HAS_CPU_SB1
1737 select CPU_SUPPORTS_32BIT_KERNEL
1738 select CPU_SUPPORTS_64BIT_KERNEL
1739 select CPU_SUPPORTS_HIGHMEM
1740 select CPU_SUPPORTS_HUGEPAGES
1741 select WEAK_ORDERING
1743 config CPU_CAVIUM_OCTEON
1744 bool "Cavium Octeon processor"
1745 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1746 select CPU_HAS_PREFETCH
1747 select CPU_SUPPORTS_64BIT_KERNEL
1748 select WEAK_ORDERING
1749 select CPU_SUPPORTS_HIGHMEM
1750 select CPU_SUPPORTS_HUGEPAGES
1751 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1752 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1753 select MIPS_L1_CACHE_SHIFT_7
1756 The Cavium Octeon processor is a highly integrated chip containing
1757 many ethernet hardware widgets for networking tasks. The processor
1758 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1759 Full details can be found at http://www.caviumnetworks.com.
1762 bool "Broadcom BMIPS"
1763 depends on SYS_HAS_CPU_BMIPS
1765 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1766 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1767 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1768 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1769 select CPU_SUPPORTS_32BIT_KERNEL
1770 select DMA_NONCOHERENT
1772 select SWAP_IO_SPACE
1773 select WEAK_ORDERING
1774 select CPU_SUPPORTS_HIGHMEM
1775 select CPU_HAS_PREFETCH
1776 select CPU_SUPPORTS_CPUFREQ
1777 select MIPS_EXTERNAL_TIMER
1779 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1782 bool "Netlogic XLR SoC"
1783 depends on SYS_HAS_CPU_XLR
1784 select CPU_SUPPORTS_32BIT_KERNEL
1785 select CPU_SUPPORTS_64BIT_KERNEL
1786 select CPU_SUPPORTS_HIGHMEM
1787 select CPU_SUPPORTS_HUGEPAGES
1788 select WEAK_ORDERING
1789 select WEAK_REORDERING_BEYOND_LLSC
1791 Netlogic Microsystems XLR/XLS processors.
1794 bool "Netlogic XLP SoC"
1795 depends on SYS_HAS_CPU_XLP
1796 select CPU_SUPPORTS_32BIT_KERNEL
1797 select CPU_SUPPORTS_64BIT_KERNEL
1798 select CPU_SUPPORTS_HIGHMEM
1799 select WEAK_ORDERING
1800 select WEAK_REORDERING_BEYOND_LLSC
1801 select CPU_HAS_PREFETCH
1803 select CPU_SUPPORTS_HUGEPAGES
1804 select MIPS_ASID_BITS_VARIABLE
1806 Netlogic Microsystems XLP processors.
1809 config CPU_MIPS32_3_5_FEATURES
1810 bool "MIPS32 Release 3.5 Features"
1811 depends on SYS_HAS_CPU_MIPS32_R3_5
1812 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1814 Choose this option to build a kernel for release 2 or later of the
1815 MIPS32 architecture including features from the 3.5 release such as
1816 support for Enhanced Virtual Addressing (EVA).
1818 config CPU_MIPS32_3_5_EVA
1819 bool "Enhanced Virtual Addressing (EVA)"
1820 depends on CPU_MIPS32_3_5_FEATURES
1824 Choose this option if you want to enable the Enhanced Virtual
1825 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1826 One of its primary benefits is an increase in the maximum size
1827 of lowmem (up to 3GB). If unsure, say 'N' here.
1829 config CPU_MIPS32_R5_FEATURES
1830 bool "MIPS32 Release 5 Features"
1831 depends on SYS_HAS_CPU_MIPS32_R5
1832 depends on CPU_MIPS32_R2
1834 Choose this option to build a kernel for release 2 or later of the
1835 MIPS32 architecture including features from release 5 such as
1836 support for Extended Physical Addressing (XPA).
1838 config CPU_MIPS32_R5_XPA
1839 bool "Extended Physical Addressing (XPA)"
1840 depends on CPU_MIPS32_R5_FEATURES
1842 depends on !PAGE_SIZE_4KB
1843 depends on SYS_SUPPORTS_HIGHMEM
1846 select PHYS_ADDR_T_64BIT
1849 Choose this option if you want to enable the Extended Physical
1850 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1851 benefit is to increase physical addressing equal to or greater
1852 than 40 bits. Note that this has the side effect of turning on
1853 64-bit addressing which in turn makes the PTEs 64-bit in size.
1854 If unsure, say 'N' here.
1857 config CPU_NOP_WORKAROUNDS
1860 config CPU_JUMP_WORKAROUNDS
1863 config CPU_LOONGSON2F_WORKAROUNDS
1864 bool "Loongson 2F Workarounds"
1866 select CPU_NOP_WORKAROUNDS
1867 select CPU_JUMP_WORKAROUNDS
1869 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1870 require workarounds. Without workarounds the system may hang
1871 unexpectedly. For more information please refer to the gas
1872 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1874 Loongson 2F03 and later have fixed these issues and no workarounds
1875 are needed. The workarounds have no significant side effect on them
1876 but may decrease the performance of the system so this option should
1877 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1880 If unsure, please say Y.
1881 endif # CPU_LOONGSON2F
1883 config SYS_SUPPORTS_ZBOOT
1885 select HAVE_KERNEL_GZIP
1886 select HAVE_KERNEL_BZIP2
1887 select HAVE_KERNEL_LZ4
1888 select HAVE_KERNEL_LZMA
1889 select HAVE_KERNEL_LZO
1890 select HAVE_KERNEL_XZ
1892 config SYS_SUPPORTS_ZBOOT_UART16550
1894 select SYS_SUPPORTS_ZBOOT
1896 config SYS_SUPPORTS_ZBOOT_UART_PROM
1898 select SYS_SUPPORTS_ZBOOT
1900 config CPU_LOONGSON2EF
1902 select CPU_SUPPORTS_32BIT_KERNEL
1903 select CPU_SUPPORTS_64BIT_KERNEL
1904 select CPU_SUPPORTS_HIGHMEM
1905 select CPU_SUPPORTS_HUGEPAGES
1906 select ARCH_HAS_PHYS_TO_DMA
1908 config CPU_LOONGSON32
1912 select CPU_HAS_PREFETCH
1913 select CPU_SUPPORTS_32BIT_KERNEL
1914 select CPU_SUPPORTS_HIGHMEM
1915 select CPU_SUPPORTS_CPUFREQ
1917 config CPU_BMIPS32_3300
1918 select SMP_UP if SMP
1921 config CPU_BMIPS4350
1923 select SYS_SUPPORTS_SMP
1924 select SYS_SUPPORTS_HOTPLUG_CPU
1926 config CPU_BMIPS4380
1928 select MIPS_L1_CACHE_SHIFT_6
1929 select SYS_SUPPORTS_SMP
1930 select SYS_SUPPORTS_HOTPLUG_CPU
1933 config CPU_BMIPS5000
1935 select MIPS_CPU_SCACHE
1936 select MIPS_L1_CACHE_SHIFT_7
1937 select SYS_SUPPORTS_SMP
1938 select SYS_SUPPORTS_HOTPLUG_CPU
1941 config SYS_HAS_CPU_LOONGSON64
1943 select CPU_SUPPORTS_CPUFREQ
1946 config SYS_HAS_CPU_LOONGSON2E
1949 config SYS_HAS_CPU_LOONGSON2F
1951 select CPU_SUPPORTS_CPUFREQ
1952 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1954 config SYS_HAS_CPU_LOONGSON1B
1957 config SYS_HAS_CPU_LOONGSON1C
1960 config SYS_HAS_CPU_MIPS32_R1
1963 config SYS_HAS_CPU_MIPS32_R2
1966 config SYS_HAS_CPU_MIPS32_R3_5
1969 config SYS_HAS_CPU_MIPS32_R5
1971 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1973 config SYS_HAS_CPU_MIPS32_R6
1975 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1977 config SYS_HAS_CPU_MIPS64_R1
1980 config SYS_HAS_CPU_MIPS64_R2
1983 config SYS_HAS_CPU_MIPS64_R6
1985 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1987 config SYS_HAS_CPU_R3000
1990 config SYS_HAS_CPU_TX39XX
1993 config SYS_HAS_CPU_VR41XX
1996 config SYS_HAS_CPU_R4X00
1999 config SYS_HAS_CPU_TX49XX
2002 config SYS_HAS_CPU_R5000
2005 config SYS_HAS_CPU_R5500
2008 config SYS_HAS_CPU_NEVADA
2011 config SYS_HAS_CPU_R10000
2013 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2015 config SYS_HAS_CPU_RM7000
2018 config SYS_HAS_CPU_SB1
2021 config SYS_HAS_CPU_CAVIUM_OCTEON
2024 config SYS_HAS_CPU_BMIPS
2027 config SYS_HAS_CPU_BMIPS32_3300
2029 select SYS_HAS_CPU_BMIPS
2031 config SYS_HAS_CPU_BMIPS4350
2033 select SYS_HAS_CPU_BMIPS
2035 config SYS_HAS_CPU_BMIPS4380
2037 select SYS_HAS_CPU_BMIPS
2039 config SYS_HAS_CPU_BMIPS5000
2041 select SYS_HAS_CPU_BMIPS
2042 select ARCH_HAS_SYNC_DMA_FOR_CPU
2044 config SYS_HAS_CPU_XLR
2047 config SYS_HAS_CPU_XLP
2051 # CPU may reorder R->R, R->W, W->R, W->W
2052 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2054 config WEAK_ORDERING
2058 # CPU may reorder reads and writes beyond LL/SC
2059 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2061 config WEAK_REORDERING_BEYOND_LLSC
2066 # These two indicate any level of the MIPS32 and MIPS64 architecture
2070 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2074 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2077 # These indicate the revision of the architecture
2081 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2085 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2087 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2092 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2094 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2095 select HAVE_ARCH_BITREVERSE
2096 select MIPS_ASID_BITS_VARIABLE
2097 select MIPS_CRC_SUPPORT
2100 config TARGET_ISA_REV
2102 default 1 if CPU_MIPSR1
2103 default 2 if CPU_MIPSR2
2104 default 6 if CPU_MIPSR6
2107 Reflects the ISA revision being targeted by the kernel build. This
2108 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2116 config SYS_SUPPORTS_32BIT_KERNEL
2118 config SYS_SUPPORTS_64BIT_KERNEL
2120 config CPU_SUPPORTS_32BIT_KERNEL
2122 config CPU_SUPPORTS_64BIT_KERNEL
2124 config CPU_SUPPORTS_CPUFREQ
2126 config CPU_SUPPORTS_ADDRWINCFG
2128 config CPU_SUPPORTS_HUGEPAGES
2130 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2131 config MIPS_PGD_C0_CONTEXT
2133 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2136 # Set to y for ptrace access to watch registers.
2138 config HARDWARE_WATCHPOINTS
2140 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2145 prompt "Kernel code model"
2147 You should only select this option if you have a workload that
2148 actually benefits from 64-bit processing or if your machine has
2149 large memory. You will only be presented a single option in this
2150 menu if your system does not support both 32-bit and 64-bit kernels.
2153 bool "32-bit kernel"
2154 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2157 Select this option if you want to build a 32-bit kernel.
2160 bool "64-bit kernel"
2161 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2163 Select this option if you want to build a 64-bit kernel.
2168 bool "KVM Guest Kernel"
2169 depends on BROKEN_ON_SMP
2171 Select this option if building a guest kernel for KVM (Trap & Emulate)
2174 config KVM_GUEST_TIMER_FREQ
2175 int "Count/Compare Timer Frequency (MHz)"
2176 depends on KVM_GUEST
2179 Set this to non-zero if building a guest kernel for KVM to skip RTC
2180 emulation when determining guest CPU Frequency. Instead, the guest's
2181 timer frequency is specified directly.
2183 config MIPS_VA_BITS_48
2184 bool "48 bits virtual memory"
2187 Support a maximum at least 48 bits of application virtual
2188 memory. Default is 40 bits or less, depending on the CPU.
2189 For page sizes 16k and above, this option results in a small
2190 memory overhead for page tables. For 4k page size, a fourth
2191 level of page tables is added which imposes both a memory
2192 overhead as well as slower TLB fault handling.
2197 prompt "Kernel page size"
2198 default PAGE_SIZE_4KB
2200 config PAGE_SIZE_4KB
2202 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2204 This option select the standard 4kB Linux page size. On some
2205 R3000-family processors this is the only available page size. Using
2206 4kB page size will minimize memory consumption and is therefore
2207 recommended for low memory systems.
2209 config PAGE_SIZE_8KB
2211 depends on CPU_CAVIUM_OCTEON
2212 depends on !MIPS_VA_BITS_48
2214 Using 8kB page size will result in higher performance kernel at
2215 the price of higher memory consumption. This option is available
2216 only on cnMIPS processors. Note that you will need a suitable Linux
2217 distribution to support this.
2219 config PAGE_SIZE_16KB
2221 depends on !CPU_R3000 && !CPU_TX39XX
2223 Using 16kB page size will result in higher performance kernel at
2224 the price of higher memory consumption. This option is available on
2225 all non-R3000 family processors. Note that you will need a suitable
2226 Linux distribution to support this.
2228 config PAGE_SIZE_32KB
2230 depends on CPU_CAVIUM_OCTEON
2231 depends on !MIPS_VA_BITS_48
2233 Using 32kB page size will result in higher performance kernel at
2234 the price of higher memory consumption. This option is available
2235 only on cnMIPS cores. Note that you will need a suitable Linux
2236 distribution to support this.
2238 config PAGE_SIZE_64KB
2240 depends on !CPU_R3000 && !CPU_TX39XX
2242 Using 64kB page size will result in higher performance kernel at
2243 the price of higher memory consumption. This option is available on
2244 all non-R3000 family processor. Not that at the time of this
2245 writing this option is still high experimental.
2249 config FORCE_MAX_ZONEORDER
2250 int "Maximum zone order"
2251 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2252 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2253 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2254 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2255 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2256 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2260 The kernel memory allocator divides physically contiguous memory
2261 blocks into "zones", where each zone is a power of two number of
2262 pages. This option selects the largest power of two that the kernel
2263 keeps in the memory allocator. If you need to allocate very large
2264 blocks of physically contiguous memory, then you may need to
2265 increase this value.
2267 This config option is actually maximum order plus one. For example,
2268 a value of 11 means that the largest free memory block is 2^10 pages.
2270 The page size is not necessarily 4KB. Keep this in mind
2271 when choosing a value for this option.
2276 config IP22_CPU_SCACHE
2281 # Support for a MIPS32 / MIPS64 style S-caches
2283 config MIPS_CPU_SCACHE
2287 config R5000_CPU_SCACHE
2291 config RM7000_CPU_SCACHE
2295 config SIBYTE_DMA_PAGEOPS
2296 bool "Use DMA to clear/copy pages"
2299 Instead of using the CPU to zero and copy pages, use a Data Mover
2300 channel. These DMA channels are otherwise unused by the standard
2301 SiByte Linux port. Seems to give a small performance benefit.
2303 config CPU_HAS_PREFETCH
2306 config CPU_GENERIC_DUMP_TLB
2308 default y if !(CPU_R3000 || CPU_TX39XX)
2310 config MIPS_FP_SUPPORT
2311 bool "Floating Point support" if EXPERT
2314 Select y to include support for floating point in the kernel
2315 including initialization of FPU hardware, FP context save & restore
2316 and emulation of an FPU where necessary. Without this support any
2317 userland program attempting to use floating point instructions will
2320 If you know that your userland will not attempt to use floating point
2321 instructions then you can say n here to shrink the kernel a little.
2325 config CPU_R2300_FPU
2327 depends on MIPS_FP_SUPPORT
2328 default y if CPU_R3000 || CPU_TX39XX
2335 depends on MIPS_FP_SUPPORT
2336 default y if !CPU_R2300_FPU
2338 config CPU_R4K_CACHE_TLB
2340 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2343 bool "MIPS MT SMP support (1 TC on each available VPE)"
2345 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2346 select CPU_MIPSR2_IRQ_VI
2347 select CPU_MIPSR2_IRQ_EI
2352 select SYS_SUPPORTS_SMP
2353 select SYS_SUPPORTS_SCHED_SMT
2354 select MIPS_PERF_SHARED_TC_COUNTERS
2356 This is a kernel model which is known as SMVP. This is supported
2357 on cores with the MT ASE and uses the available VPEs to implement
2358 virtual processors which supports SMP. This is equivalent to the
2359 Intel Hyperthreading feature. For further information go to
2360 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2366 bool "SMT (multithreading) scheduler support"
2367 depends on SYS_SUPPORTS_SCHED_SMT
2370 SMT scheduler support improves the CPU scheduler's decision making
2371 when dealing with MIPS MT enabled cores at a cost of slightly
2372 increased overhead in some places. If unsure say N here.
2374 config SYS_SUPPORTS_SCHED_SMT
2377 config SYS_SUPPORTS_MULTITHREADING
2380 config MIPS_MT_FPAFF
2381 bool "Dynamic FPU affinity for FP-intensive threads"
2383 depends on MIPS_MT_SMP
2385 config MIPSR2_TO_R6_EMULATOR
2386 bool "MIPS R2-to-R6 emulator"
2387 depends on CPU_MIPSR6
2388 depends on MIPS_FP_SUPPORT
2391 Choose this option if you want to run non-R6 MIPS userland code.
2392 Even if you say 'Y' here, the emulator will still be disabled by
2393 default. You can enable it using the 'mipsr2emu' kernel option.
2394 The only reason this is a build-time option is to save ~14K from the
2397 config SYS_SUPPORTS_VPE_LOADER
2399 depends on SYS_SUPPORTS_MULTITHREADING
2401 Indicates that the platform supports the VPE loader, and provides
2404 config MIPS_VPE_LOADER
2405 bool "VPE loader support."
2406 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2407 select CPU_MIPSR2_IRQ_VI
2408 select CPU_MIPSR2_IRQ_EI
2411 Includes a loader for loading an elf relocatable object
2412 onto another VPE and running it.
2414 config MIPS_VPE_LOADER_CMP
2417 depends on MIPS_VPE_LOADER && MIPS_CMP
2419 config MIPS_VPE_LOADER_MT
2422 depends on MIPS_VPE_LOADER && !MIPS_CMP
2424 config MIPS_VPE_LOADER_TOM
2425 bool "Load VPE program into memory hidden from linux"
2426 depends on MIPS_VPE_LOADER
2429 The loader can use memory that is present but has been hidden from
2430 Linux using the kernel command line option "mem=xxMB". It's up to
2431 you to ensure the amount you put in the option and the space your
2432 program requires is less or equal to the amount physically present.
2434 config MIPS_VPE_APSP_API
2435 bool "Enable support for AP/SP API (RTLX)"
2436 depends on MIPS_VPE_LOADER
2438 config MIPS_VPE_APSP_API_CMP
2441 depends on MIPS_VPE_APSP_API && MIPS_CMP
2443 config MIPS_VPE_APSP_API_MT
2446 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2449 bool "MIPS CMP framework support (DEPRECATED)"
2450 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2453 select SYS_SUPPORTS_SMP
2454 select WEAK_ORDERING
2457 Select this if you are using a bootloader which implements the "CMP
2458 framework" protocol (ie. YAMON) and want your kernel to make use of
2459 its ability to start secondary CPUs.
2461 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2465 bool "MIPS Coherent Processing System support"
2466 depends on SYS_SUPPORTS_MIPS_CPS
2468 select MIPS_CPS_PM if HOTPLUG_CPU
2470 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2471 select SYS_SUPPORTS_HOTPLUG_CPU
2472 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2473 select SYS_SUPPORTS_SMP
2474 select WEAK_ORDERING
2476 Select this if you wish to run an SMP kernel across multiple cores
2477 within a MIPS Coherent Processing System. When this option is
2478 enabled the kernel will probe for other cores and boot them with
2479 no external assistance. It is safe to enable this when hardware
2480 support is unavailable.
2493 config SB1_PASS_2_WORKAROUNDS
2495 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2498 config SB1_PASS_2_1_WORKAROUNDS
2500 depends on CPU_SB1 && CPU_SB1_PASS_2
2504 prompt "SmartMIPS or microMIPS ASE support"
2506 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2509 Select this if you want neither microMIPS nor SmartMIPS support
2511 config CPU_HAS_SMARTMIPS
2512 depends on SYS_SUPPORTS_SMARTMIPS
2515 SmartMIPS is a extension of the MIPS32 architecture aimed at
2516 increased security at both hardware and software level for
2517 smartcards. Enabling this option will allow proper use of the
2518 SmartMIPS instructions by Linux applications. However a kernel with
2519 this option will not work on a MIPS core without SmartMIPS core. If
2520 you don't know you probably don't have SmartMIPS and should say N
2523 config CPU_MICROMIPS
2524 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2527 When this option is enabled the kernel will be built using the
2533 bool "Support for the MIPS SIMD Architecture"
2534 depends on CPU_SUPPORTS_MSA
2535 depends on MIPS_FP_SUPPORT
2536 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2538 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2539 and a set of SIMD instructions to operate on them. When this option
2540 is enabled the kernel will support allocating & switching MSA
2541 vector register contexts. If you know that your kernel will only be
2542 running on CPUs which do not support MSA or that your userland will
2543 not be making use of it then you may wish to say N here to reduce
2544 the size & complexity of your kernel.
2555 depends on !CPU_DIEI_BROKEN
2558 config CPU_DIEI_BROKEN
2564 config CPU_NO_LOAD_STORE_LR
2567 CPU lacks support for unaligned load and store instructions:
2568 LWL, LWR, SWL, SWR (Load/store word left/right).
2569 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2573 # Vectored interrupt mode is an R2 feature
2575 config CPU_MIPSR2_IRQ_VI
2579 # Extended interrupt mode is an R2 feature
2581 config CPU_MIPSR2_IRQ_EI
2586 depends on !CPU_R3000
2592 config CPU_DADDI_WORKAROUNDS
2595 config CPU_R4000_WORKAROUNDS
2597 select CPU_R4400_WORKAROUNDS
2599 config CPU_R4400_WORKAROUNDS
2602 config CPU_R4X00_BUGS64
2604 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2606 config MIPS_ASID_SHIFT
2608 default 6 if CPU_R3000 || CPU_TX39XX
2611 config MIPS_ASID_BITS
2613 default 0 if MIPS_ASID_BITS_VARIABLE
2614 default 6 if CPU_R3000 || CPU_TX39XX
2617 config MIPS_ASID_BITS_VARIABLE
2620 config MIPS_CRC_SUPPORT
2624 # - Highmem only makes sense for the 32-bit kernel.
2625 # - The current highmem code will only work properly on physically indexed
2626 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2627 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2628 # moment we protect the user and offer the highmem option only on machines
2629 # where it's known to be safe. This will not offer highmem on a few systems
2630 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2631 # indexed CPUs but we're playing safe.
2632 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2633 # know they might have memory configurations that could make use of highmem
2637 bool "High Memory Support"
2638 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2640 config CPU_SUPPORTS_HIGHMEM
2643 config SYS_SUPPORTS_HIGHMEM
2646 config SYS_SUPPORTS_SMARTMIPS
2649 config SYS_SUPPORTS_MICROMIPS
2652 config SYS_SUPPORTS_MIPS16
2655 This option must be set if a kernel might be executed on a MIPS16-
2656 enabled CPU even if MIPS16 is not actually being used. In other
2657 words, it makes the kernel MIPS16-tolerant.
2659 config CPU_SUPPORTS_MSA
2662 config ARCH_FLATMEM_ENABLE
2664 depends on !NUMA && !CPU_LOONGSON2EF
2666 config ARCH_SPARSEMEM_ENABLE
2668 select SPARSEMEM_STATIC if !SGI_IP27
2672 depends on SYS_SUPPORTS_NUMA
2674 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2675 Access). This option improves performance on systems with more
2676 than two nodes; on two node systems it is generally better to
2677 leave it disabled; on single node systems leave this option
2680 config SYS_SUPPORTS_NUMA
2683 config HAVE_SETUP_PER_CPU_AREA
2687 config NEED_PER_CPU_EMBED_FIRST_CHUNK
2692 bool "Relocatable kernel"
2693 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2695 This builds a kernel image that retains relocation information
2696 so it can be loaded someplace besides the default 1MB.
2697 The relocations make the kernel binary about 15% larger,
2698 but are discarded at runtime
2700 config RELOCATION_TABLE_SIZE
2701 hex "Relocation table size"
2702 depends on RELOCATABLE
2703 range 0x0 0x01000000
2704 default "0x00100000"
2706 A table of relocation data will be appended to the kernel binary
2707 and parsed at boot to fix up the relocated kernel.
2709 This option allows the amount of space reserved for the table to be
2710 adjusted, although the default of 1Mb should be ok in most cases.
2712 The build will fail and a valid size suggested if this is too small.
2714 If unsure, leave at the default value.
2716 config RANDOMIZE_BASE
2717 bool "Randomize the address of the kernel image"
2718 depends on RELOCATABLE
2720 Randomizes the physical and virtual address at which the
2721 kernel image is loaded, as a security feature that
2722 deters exploit attempts relying on knowledge of the location
2723 of kernel internals.
2725 Entropy is generated using any coprocessor 0 registers available.
2727 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2731 config RANDOMIZE_BASE_MAX_OFFSET
2732 hex "Maximum kASLR offset" if EXPERT
2733 depends on RANDOMIZE_BASE
2734 range 0x0 0x40000000 if EVA || 64BIT
2735 range 0x0 0x08000000
2736 default "0x01000000"
2738 When kASLR is active, this provides the maximum offset that will
2739 be applied to the kernel image. It should be set according to the
2740 amount of physical RAM available in the target system minus
2741 PHYSICAL_START and must be a power of 2.
2743 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2744 EVA or 64-bit. The default is 16Mb.
2749 depends on NEED_MULTIPLE_NODES
2751 config HW_PERF_EVENTS
2752 bool "Enable hardware performance counter support for perf events"
2753 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2756 Enable hardware performance counter support for perf events. If
2757 disabled, perf events will use software events only.
2760 bool "Enable DMI scanning"
2761 depends on MACH_LOONGSON64
2762 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2765 Enabled scanning of DMI to identify machine quirks. Say Y
2766 here unless you have verified that your setup is not
2767 affected by entries in the DMI blacklist. Required by PNP
2771 bool "Multi-Processing support"
2772 depends on SYS_SUPPORTS_SMP
2774 This enables support for systems with more than one CPU. If you have
2775 a system with only one CPU, say N. If you have a system with more
2776 than one CPU, say Y.
2778 If you say N here, the kernel will run on uni- and multiprocessor
2779 machines, but will use only one CPU of a multiprocessor machine. If
2780 you say Y here, the kernel will run on many, but not all,
2781 uniprocessor machines. On a uniprocessor machine, the kernel
2782 will run faster if you say N here.
2784 People using multiprocessor machines who say Y here should also say
2785 Y to "Enhanced Real Time Clock Support", below.
2787 See also the SMP-HOWTO available at
2788 <http://www.tldp.org/docs.html#howto>.
2790 If you don't know what to do here, say N.
2793 bool "Support for hot-pluggable CPUs"
2794 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2796 Say Y here to allow turning CPUs off and on. CPUs can be
2797 controlled through /sys/devices/system/cpu.
2798 (Note: power management support will enable this option
2799 automatically on SMP systems. )
2800 Say N if you want to disable CPU hotplug.
2805 config SYS_SUPPORTS_MIPS_CMP
2808 config SYS_SUPPORTS_MIPS_CPS
2811 config SYS_SUPPORTS_SMP
2814 config NR_CPUS_DEFAULT_4
2817 config NR_CPUS_DEFAULT_8
2820 config NR_CPUS_DEFAULT_16
2823 config NR_CPUS_DEFAULT_32
2826 config NR_CPUS_DEFAULT_64
2830 int "Maximum number of CPUs (2-256)"
2833 default "4" if NR_CPUS_DEFAULT_4
2834 default "8" if NR_CPUS_DEFAULT_8
2835 default "16" if NR_CPUS_DEFAULT_16
2836 default "32" if NR_CPUS_DEFAULT_32
2837 default "64" if NR_CPUS_DEFAULT_64
2839 This allows you to specify the maximum number of CPUs which this
2840 kernel will support. The maximum supported value is 32 for 32-bit
2841 kernel and 64 for 64-bit kernels; the minimum value which makes
2842 sense is 1 for Qemu (useful only for kernel debugging purposes)
2843 and 2 for all others.
2845 This is purely to save memory - each supported CPU adds
2846 approximately eight kilobytes to the kernel image. For best
2847 performance should round up your number of processors to the next
2850 config MIPS_PERF_SHARED_TC_COUNTERS
2853 config MIPS_NR_CPU_NR_MAP_1024
2856 config MIPS_NR_CPU_NR_MAP
2859 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2860 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2863 # Timer Interrupt Frequency Configuration
2867 prompt "Timer frequency"
2870 Allows the configuration of the timer frequency.
2873 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2876 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2879 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2882 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2885 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2888 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2891 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2894 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2898 config SYS_SUPPORTS_24HZ
2901 config SYS_SUPPORTS_48HZ
2904 config SYS_SUPPORTS_100HZ
2907 config SYS_SUPPORTS_128HZ
2910 config SYS_SUPPORTS_250HZ
2913 config SYS_SUPPORTS_256HZ
2916 config SYS_SUPPORTS_1000HZ
2919 config SYS_SUPPORTS_1024HZ
2922 config SYS_SUPPORTS_ARBIT_HZ
2924 default y if !SYS_SUPPORTS_24HZ && \
2925 !SYS_SUPPORTS_48HZ && \
2926 !SYS_SUPPORTS_100HZ && \
2927 !SYS_SUPPORTS_128HZ && \
2928 !SYS_SUPPORTS_250HZ && \
2929 !SYS_SUPPORTS_256HZ && \
2930 !SYS_SUPPORTS_1000HZ && \
2931 !SYS_SUPPORTS_1024HZ
2937 default 100 if HZ_100
2938 default 128 if HZ_128
2939 default 250 if HZ_250
2940 default 256 if HZ_256
2941 default 1000 if HZ_1000
2942 default 1024 if HZ_1024
2945 def_bool HIGH_RES_TIMERS
2948 bool "Kexec system call"
2951 kexec is a system call that implements the ability to shutdown your
2952 current kernel, and to start another kernel. It is like a reboot
2953 but it is independent of the system firmware. And like a reboot
2954 you can start any kernel with it, not just Linux.
2956 The name comes from the similarity to the exec system call.
2958 It is an ongoing process to be certain the hardware in a machine
2959 is properly shutdown, so do not be surprised if this code does not
2960 initially work for you. As of this writing the exact hardware
2961 interface is strongly in flux, so no good recommendation can be
2965 bool "Kernel crash dumps"
2967 Generate crash dump after being started by kexec.
2968 This should be normally only set in special crash dump kernels
2969 which are loaded in the main kernel with kexec-tools into
2970 a specially reserved region and then later executed after
2971 a crash by kdump/kexec. The crash dump kernel must be compiled
2972 to a memory address not used by the main kernel or firmware using
2975 config PHYSICAL_START
2976 hex "Physical address where the kernel is loaded"
2977 default "0xffffffff84000000"
2978 depends on CRASH_DUMP
2980 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2981 If you plan to use kernel for capturing the crash dump change
2982 this value to start of the reserved region (the "X" value as
2983 specified in the "crashkernel=YM@XM" command line boot parameter
2984 passed to the panic-ed kernel).
2987 bool "Enable seccomp to safely compute untrusted bytecode"
2991 This kernel feature is useful for number crunching applications
2992 that may need to compute untrusted bytecode during their
2993 execution. By using pipes or other transports made available to
2994 the process as file descriptors supporting the read/write
2995 syscalls, it's possible to isolate those applications in
2996 their own address space using seccomp. Once seccomp is
2997 enabled via /proc/<pid>/seccomp, it cannot be disabled
2998 and the task is only allowed to execute a few safe syscalls
2999 defined by each seccomp mode.
3001 If unsure, say Y. Only embedded should say N here.
3003 config MIPS_O32_FP64_SUPPORT
3004 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3005 depends on 32BIT || MIPS32_O32
3007 When this is enabled, the kernel will support use of 64-bit floating
3008 point registers with binaries using the O32 ABI along with the
3009 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3010 32-bit MIPS systems this support is at the cost of increasing the
3011 size and complexity of the compiled FPU emulator. Thus if you are
3012 running a MIPS32 system and know that none of your userland binaries
3013 will require 64-bit floating point, you may wish to reduce the size
3014 of your kernel & potentially improve FP emulation performance by
3017 Although binutils currently supports use of this flag the details
3018 concerning its effect upon the O32 ABI in userland are still being
3019 worked on. In order to avoid userland becoming dependant upon current
3020 behaviour before the details have been finalised, this option should
3021 be considered experimental and only enabled by those working upon
3029 select OF_EARLY_FLATTREE
3039 prompt "Kernel appended dtb support" if USE_OF
3040 default MIPS_NO_APPENDED_DTB
3042 config MIPS_NO_APPENDED_DTB
3045 Do not enable appended dtb support.
3047 config MIPS_ELF_APPENDED_DTB
3050 With this option, the boot code will look for a device tree binary
3051 DTB) included in the vmlinux ELF section .appended_dtb. By default
3052 it is empty and the DTB can be appended using binutils command
3055 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3057 This is meant as a backward compatiblity convenience for those
3058 systems with a bootloader that can't be upgraded to accommodate
3059 the documented boot protocol using a device tree.
3061 config MIPS_RAW_APPENDED_DTB
3062 bool "vmlinux.bin or vmlinuz.bin"
3064 With this option, the boot code will look for a device tree binary
3065 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3066 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3068 This is meant as a backward compatibility convenience for those
3069 systems with a bootloader that can't be upgraded to accommodate
3070 the documented boot protocol using a device tree.
3072 Beware that there is very little in terms of protection against
3073 this option being confused by leftover garbage in memory that might
3074 look like a DTB header after a reboot if no actual DTB is appended
3075 to vmlinux.bin. Do not leave this option active in a production kernel
3076 if you don't intend to always append a DTB.
3080 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3081 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3082 !MACH_LOONGSON64 && !MIPS_MALTA && \
3084 default MIPS_CMDLINE_FROM_BOOTLOADER
3086 config MIPS_CMDLINE_FROM_DTB
3088 bool "Dtb kernel arguments if available"
3090 config MIPS_CMDLINE_DTB_EXTEND
3092 bool "Extend dtb kernel arguments with bootloader arguments"
3094 config MIPS_CMDLINE_FROM_BOOTLOADER
3095 bool "Bootloader kernel arguments if available"
3097 config MIPS_CMDLINE_BUILTIN_EXTEND
3098 depends on CMDLINE_BOOL
3099 bool "Extend builtin kernel arguments with bootloader arguments"
3104 config LOCKDEP_SUPPORT
3108 config STACKTRACE_SUPPORT
3112 config PGTABLE_LEVELS
3114 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3115 default 3 if 64BIT && !PAGE_SIZE_64KB
3118 config MIPS_AUTO_PFN_OFFSET
3121 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3123 config PCI_DRIVERS_GENERIC
3124 select PCI_DOMAINS_GENERIC if PCI
3127 config PCI_DRIVERS_LEGACY
3128 def_bool !PCI_DRIVERS_GENERIC
3129 select NO_GENERIC_PCI_IOPORT_MAP
3130 select PCI_DOMAINS if PCI
3133 # ISA support is now enabled via select. Too many systems still have the one
3134 # or other ISA chip on the board that users don't know about so don't expect
3135 # users to choose the right thing ...
3141 bool "TURBOchannel support"
3142 depends on MACH_DECSTATION
3144 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3145 processors. TURBOchannel programming specifications are available
3147 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3149 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3150 Linux driver support status is documented at:
3151 <http://www.linux-mips.org/wiki/DECstation>
3157 config ARCH_MMAP_RND_BITS_MIN
3161 config ARCH_MMAP_RND_BITS_MAX
3165 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3168 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3175 select MIPS_EXTERNAL_TIMER
3188 config MIPS32_COMPAT
3194 config SYSVIPC_COMPAT
3198 bool "Kernel support for o32 binaries"
3200 select ARCH_WANT_OLD_COMPAT_IPC
3202 select MIPS32_COMPAT
3203 select SYSVIPC_COMPAT if SYSVIPC
3205 Select this option if you want to run o32 binaries. These are pure
3206 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3207 existing binaries are in this format.
3212 bool "Kernel support for n32 binaries"
3214 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3216 select MIPS32_COMPAT
3217 select SYSVIPC_COMPAT if SYSVIPC
3219 Select this option if you want to run n32 binaries. These are
3220 64-bit binaries using 32-bit quantities for addressing and certain
3221 data that would normally be 64-bit. They are used in special
3228 default y if MIPS32_O32 || MIPS32_N32
3231 menu "Power management options"
3233 config ARCH_HIBERNATION_POSSIBLE
3235 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3237 config ARCH_SUSPEND_POSSIBLE
3239 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3241 source "kernel/power/Kconfig"
3245 config MIPS_EXTERNAL_TIMER
3248 menu "CPU Power Management"
3250 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3251 source "drivers/cpufreq/Kconfig"
3254 source "drivers/cpuidle/Kconfig"
3258 source "drivers/firmware/Kconfig"
3260 source "arch/mips/kvm/Kconfig"