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_MOD_ARCH_SPECIFIC
78 select HAVE_PERF_EVENTS
79 select HAVE_REGS_AND_STACK_ACCESS_API
81 select HAVE_SPARSE_SYSCALL_NR
82 select HAVE_STACKPROTECTOR
83 select HAVE_SYSCALL_TRACEPOINTS
84 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
85 select IRQ_FORCED_THREADING
87 select MODULES_USE_ELF_REL if MODULES
88 select MODULES_USE_ELF_RELA if MODULES && 64BIT
89 select PERF_USE_VMALLOC
91 select SYSCTL_EXCEPTION_TRACE
94 menu "Machine selection"
101 bool "Generic board-agnostic MIPS kernel"
105 select CLKSRC_MIPS_GIC
107 select CPU_MIPSR2_IRQ_EI
108 select CPU_MIPSR2_IRQ_VI
110 select DMA_PERDEV_COHERENT
113 select MIPS_AUTO_PFN_OFFSET
114 select MIPS_CPU_SCACHE
116 select MIPS_L1_CACHE_SHIFT_7
117 select NO_EXCEPT_FILL
118 select PCI_DRIVERS_GENERIC
121 select SYS_HAS_CPU_MIPS32_R1
122 select SYS_HAS_CPU_MIPS32_R2
123 select SYS_HAS_CPU_MIPS32_R6
124 select SYS_HAS_CPU_MIPS64_R1
125 select SYS_HAS_CPU_MIPS64_R2
126 select SYS_HAS_CPU_MIPS64_R6
127 select SYS_SUPPORTS_32BIT_KERNEL
128 select SYS_SUPPORTS_64BIT_KERNEL
129 select SYS_SUPPORTS_BIG_ENDIAN
130 select SYS_SUPPORTS_HIGHMEM
131 select SYS_SUPPORTS_LITTLE_ENDIAN
132 select SYS_SUPPORTS_MICROMIPS
133 select SYS_SUPPORTS_MIPS16
134 select SYS_SUPPORTS_MIPS_CPS
135 select SYS_SUPPORTS_MULTITHREADING
136 select SYS_SUPPORTS_RELOCATABLE
137 select SYS_SUPPORTS_SMARTMIPS
139 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
140 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
141 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
142 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
143 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
144 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
147 Select this to build a kernel which aims to support multiple boards,
148 generally using a flattened device tree passed from the bootloader
149 using the boot protocol defined in the UHI (Unified Hosting
150 Interface) specification.
153 bool "Alchemy processor based machines"
154 select PHYS_ADDR_T_64BIT
158 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
159 select SYS_HAS_CPU_MIPS32_R1
160 select SYS_SUPPORTS_32BIT_KERNEL
161 select SYS_SUPPORTS_APM_EMULATION
163 select SYS_SUPPORTS_ZBOOT
167 bool "Texas Instruments AR7"
169 select DMA_NONCOHERENT
173 select NO_EXCEPT_FILL
175 select SYS_HAS_CPU_MIPS32_R1
176 select SYS_HAS_EARLY_PRINTK
177 select SYS_SUPPORTS_32BIT_KERNEL
178 select SYS_SUPPORTS_LITTLE_ENDIAN
179 select SYS_SUPPORTS_MIPS16
180 select SYS_SUPPORTS_ZBOOT_UART16550
185 Support for the Texas Instruments AR7 System-on-a-Chip
186 family: TNETD7100, 7200 and 7300.
189 bool "Atheros AR231x/AR531x SoC support"
192 select DMA_NONCOHERENT
195 select SYS_HAS_CPU_MIPS32_R1
196 select SYS_SUPPORTS_BIG_ENDIAN
197 select SYS_SUPPORTS_32BIT_KERNEL
198 select SYS_HAS_EARLY_PRINTK
200 Support for Atheros AR231x and Atheros AR531x based boards
203 bool "Atheros AR71XX/AR724X/AR913X based boards"
204 select ARCH_HAS_RESET_CONTROLLER
208 select DMA_NONCOHERENT
215 select SYS_HAS_CPU_MIPS32_R2
216 select SYS_HAS_EARLY_PRINTK
217 select SYS_SUPPORTS_32BIT_KERNEL
218 select SYS_SUPPORTS_BIG_ENDIAN
219 select SYS_SUPPORTS_MIPS16
220 select SYS_SUPPORTS_ZBOOT_UART_PROM
222 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
224 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
227 bool "Broadcom Generic BMIPS kernel"
228 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
229 select ARCH_HAS_PHYS_TO_DMA
231 select NO_EXCEPT_FILL
237 select BCM6345_L1_IRQ
238 select BCM7038_L1_IRQ
239 select BCM7120_L2_IRQ
240 select BRCMSTB_L2_IRQ
242 select DMA_NONCOHERENT
243 select SYS_SUPPORTS_32BIT_KERNEL
244 select SYS_SUPPORTS_LITTLE_ENDIAN
245 select SYS_SUPPORTS_BIG_ENDIAN
246 select SYS_SUPPORTS_HIGHMEM
247 select SYS_HAS_CPU_BMIPS32_3300
248 select SYS_HAS_CPU_BMIPS4350
249 select SYS_HAS_CPU_BMIPS4380
250 select SYS_HAS_CPU_BMIPS5000
252 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
253 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
254 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
255 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
256 select HARDIRQS_SW_RESEND
258 Build a generic DT-based kernel image that boots on select
259 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
260 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
261 must be set appropriately for your board.
264 bool "Broadcom BCM47XX based boards"
268 select DMA_NONCOHERENT
271 select SYS_HAS_CPU_MIPS32_R1
272 select NO_EXCEPT_FILL
273 select SYS_SUPPORTS_32BIT_KERNEL
274 select SYS_SUPPORTS_LITTLE_ENDIAN
275 select SYS_SUPPORTS_MIPS16
276 select SYS_SUPPORTS_ZBOOT
277 select SYS_HAS_EARLY_PRINTK
278 select USE_GENERIC_EARLY_PRINTK_8250
280 select LEDS_GPIO_REGISTER
283 select BCM47XX_SSB if !BCM47XX_BCMA
285 Support for BCM47XX based boards
288 bool "Broadcom BCM63XX based boards"
293 select DMA_NONCOHERENT
295 select SYS_SUPPORTS_32BIT_KERNEL
296 select SYS_SUPPORTS_BIG_ENDIAN
297 select SYS_HAS_EARLY_PRINTK
301 select MIPS_L1_CACHE_SHIFT_4
304 Support for BCM63XX based boards
311 select DMA_NONCOHERENT
317 select PCI_GT64XXX_PCI0
318 select SYS_HAS_CPU_NEVADA
319 select SYS_HAS_EARLY_PRINTK
320 select SYS_SUPPORTS_32BIT_KERNEL
321 select SYS_SUPPORTS_64BIT_KERNEL
322 select SYS_SUPPORTS_LITTLE_ENDIAN
323 select USE_GENERIC_EARLY_PRINTK_8250
325 config MACH_DECSTATION
329 select CEVT_R4K if CPU_R4X00
331 select CSRC_R4K if CPU_R4X00
332 select CPU_DADDI_WORKAROUNDS if 64BIT
333 select CPU_R4000_WORKAROUNDS if 64BIT
334 select CPU_R4400_WORKAROUNDS if 64BIT
335 select DMA_NONCOHERENT
338 select SYS_HAS_CPU_R3000
339 select SYS_HAS_CPU_R4X00
340 select SYS_SUPPORTS_32BIT_KERNEL
341 select SYS_SUPPORTS_64BIT_KERNEL
342 select SYS_SUPPORTS_LITTLE_ENDIAN
343 select SYS_SUPPORTS_128HZ
344 select SYS_SUPPORTS_256HZ
345 select SYS_SUPPORTS_1024HZ
346 select MIPS_L1_CACHE_SHIFT_4
348 This enables support for DEC's MIPS based workstations. For details
349 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
350 DECstation porting pages on <http://decstation.unix-ag.org/>.
352 If you have one of the following DECstation Models you definitely
353 want to choose R4xx0 for the CPU Type:
360 otherwise choose R3000.
363 bool "Jazz family of machines"
366 select ARCH_MIGHT_HAVE_PC_PARPORT
367 select ARCH_MIGHT_HAVE_PC_SERIO
370 select ARCH_MAY_HAVE_PC_FDC
373 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
374 select GENERIC_ISA_DMA
375 select HAVE_PCSPKR_PLATFORM
380 select SYS_HAS_CPU_R4X00
381 select SYS_SUPPORTS_32BIT_KERNEL
382 select SYS_SUPPORTS_64BIT_KERNEL
383 select SYS_SUPPORTS_100HZ
385 This a family of machines based on the MIPS R4030 chipset which was
386 used by several vendors to build RISC/os and Windows NT workstations.
387 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
388 Olivetti M700-10 workstations.
391 bool "Ingenic SoC based machines"
392 select SYS_SUPPORTS_32BIT_KERNEL
393 select SYS_SUPPORTS_LITTLE_ENDIAN
394 select SYS_SUPPORTS_ZBOOT_UART16550
395 select CPU_SUPPORTS_HUGEPAGES
396 select DMA_NONCOHERENT
401 select GENERIC_IRQ_CHIP
402 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
406 bool "Lantiq based platforms"
407 select DMA_NONCOHERENT
411 select SYS_HAS_CPU_MIPS32_R1
412 select SYS_HAS_CPU_MIPS32_R2
413 select SYS_SUPPORTS_BIG_ENDIAN
414 select SYS_SUPPORTS_32BIT_KERNEL
415 select SYS_SUPPORTS_MIPS16
416 select SYS_SUPPORTS_MULTITHREADING
417 select SYS_SUPPORTS_VPE_LOADER
418 select SYS_HAS_EARLY_PRINTK
425 select PINCTRL_LANTIQ
426 select ARCH_HAS_RESET_CONTROLLER
427 select RESET_CONTROLLER
430 bool "LASAT Networks platforms"
434 select DMA_NONCOHERENT
435 select SYS_HAS_EARLY_PRINTK
438 select PCI_GT64XXX_PCI0
440 select R5000_CPU_SCACHE
441 select SYS_HAS_CPU_R5000
442 select SYS_SUPPORTS_32BIT_KERNEL
443 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
444 select SYS_SUPPORTS_LITTLE_ENDIAN
446 config MACH_LOONGSON32
447 bool "Loongson 32-bit family of machines"
448 select SYS_SUPPORTS_ZBOOT
450 This enables support for the Loongson-1 family of machines.
452 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
453 the Institute of Computing Technology (ICT), Chinese Academy of
456 config MACH_LOONGSON2EF
457 bool "Loongson-2E/F family of machines"
458 select SYS_SUPPORTS_ZBOOT
460 This enables the support of early Loongson-2E/F family of machines.
462 config MACH_LOONGSON64
463 bool "Loongson 64-bit family of machines"
464 select ARCH_SPARSEMEM_ENABLE
465 select ARCH_MIGHT_HAVE_PC_PARPORT
466 select ARCH_MIGHT_HAVE_PC_SERIO
467 select GENERIC_ISA_DMA_SUPPORT_BROKEN
477 select NR_CPUS_DEFAULT_4
478 select USE_GENERIC_EARLY_PRINTK_8250
479 select SYS_HAS_CPU_LOONGSON64
480 select SYS_HAS_EARLY_PRINTK
481 select SYS_SUPPORTS_SMP
482 select SYS_SUPPORTS_HOTPLUG_CPU
483 select SYS_SUPPORTS_NUMA
484 select SYS_SUPPORTS_64BIT_KERNEL
485 select SYS_SUPPORTS_HIGHMEM
486 select SYS_SUPPORTS_LITTLE_ENDIAN
487 select SYS_SUPPORTS_ZBOOT
494 This enables the support of Loongson-2/3 family of machines.
496 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
497 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
498 and Loongson-2F which will be removed), developed by the Institute
499 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
501 config MACH_PISTACHIO
502 bool "IMG Pistachio SoC based boards"
506 select CLKSRC_MIPS_GIC
509 select DMA_NONCOHERENT
513 select MIPS_CPU_SCACHE
517 select SYS_HAS_CPU_MIPS32_R2
518 select SYS_SUPPORTS_32BIT_KERNEL
519 select SYS_SUPPORTS_LITTLE_ENDIAN
520 select SYS_SUPPORTS_MIPS_CPS
521 select SYS_SUPPORTS_MULTITHREADING
522 select SYS_SUPPORTS_RELOCATABLE
523 select SYS_SUPPORTS_ZBOOT
524 select SYS_HAS_EARLY_PRINTK
525 select USE_GENERIC_EARLY_PRINTK_8250
528 This enables support for the IMG Pistachio SoC platform.
531 bool "MIPS Malta board"
532 select ARCH_MAY_HAVE_PC_FDC
533 select ARCH_MIGHT_HAVE_PC_PARPORT
534 select ARCH_MIGHT_HAVE_PC_SERIO
539 select CLKSRC_MIPS_GIC
542 select DMA_MAYBE_COHERENT
543 select GENERIC_ISA_DMA
544 select HAVE_PCSPKR_PLATFORM
550 select MIPS_CPU_SCACHE
552 select MIPS_L1_CACHE_SHIFT_6
554 select PCI_GT64XXX_PCI0
557 select SYS_HAS_CPU_MIPS32_R1
558 select SYS_HAS_CPU_MIPS32_R2
559 select SYS_HAS_CPU_MIPS32_R3_5
560 select SYS_HAS_CPU_MIPS32_R5
561 select SYS_HAS_CPU_MIPS32_R6
562 select SYS_HAS_CPU_MIPS64_R1
563 select SYS_HAS_CPU_MIPS64_R2
564 select SYS_HAS_CPU_MIPS64_R6
565 select SYS_HAS_CPU_NEVADA
566 select SYS_HAS_CPU_RM7000
567 select SYS_SUPPORTS_32BIT_KERNEL
568 select SYS_SUPPORTS_64BIT_KERNEL
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_HIGHMEM
571 select SYS_SUPPORTS_LITTLE_ENDIAN
572 select SYS_SUPPORTS_MICROMIPS
573 select SYS_SUPPORTS_MIPS16
574 select SYS_SUPPORTS_MIPS_CMP
575 select SYS_SUPPORTS_MIPS_CPS
576 select SYS_SUPPORTS_MULTITHREADING
577 select SYS_SUPPORTS_RELOCATABLE
578 select SYS_SUPPORTS_SMARTMIPS
579 select SYS_SUPPORTS_VPE_LOADER
580 select SYS_SUPPORTS_ZBOOT
582 select ZONE_DMA32 if 64BIT
584 This enables support for the MIPS Technologies Malta evaluation
588 bool "Microchip PIC32 Family"
590 This enables support for the Microchip PIC32 family of platforms.
592 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
596 bool "NEC EMMA2RH Mark-eins board"
600 This enables support for the NEC Electronics Mark-eins boards.
603 bool "NEC VR4100 series based machines"
606 select SYS_HAS_CPU_VR41XX
607 select SYS_SUPPORTS_MIPS16
611 bool "NXP STB220 board"
614 Support for NXP Semiconductors STB220 Development Board.
621 Support for NXP Semiconductors STB225 Development Board.
624 bool "PMC-Sierra MSP chipsets"
627 select DMA_NONCOHERENT
629 select NO_EXCEPT_FILL
631 select SYS_HAS_CPU_MIPS32_R1
632 select SYS_HAS_CPU_MIPS32_R2
633 select SYS_SUPPORTS_32BIT_KERNEL
634 select SYS_SUPPORTS_BIG_ENDIAN
635 select SYS_SUPPORTS_MIPS16
638 select SERIAL_8250_CONSOLE
639 select USB_EHCI_BIG_ENDIAN_MMIO
640 select USB_EHCI_BIG_ENDIAN_DESC
642 This adds support for the PMC-Sierra family of Multi-Service
643 Processor System-On-A-Chips. These parts include a number
644 of integrated peripherals, interfaces and DSPs in addition to
645 a variety of MIPS cores.
648 bool "Ralink based machines"
652 select DMA_NONCOHERENT
655 select SYS_HAS_CPU_MIPS32_R1
656 select SYS_HAS_CPU_MIPS32_R2
657 select SYS_SUPPORTS_32BIT_KERNEL
658 select SYS_SUPPORTS_LITTLE_ENDIAN
659 select SYS_SUPPORTS_MIPS16
660 select SYS_HAS_EARLY_PRINTK
662 select ARCH_HAS_RESET_CONTROLLER
663 select RESET_CONTROLLER
666 bool "SGI IP22 (Indy/Indigo2)"
671 select ARCH_MIGHT_HAVE_PC_SERIO
675 select DEFAULT_SGI_PARTITION
676 select DMA_NONCOHERENT
680 select IP22_CPU_SCACHE
682 select GENERIC_ISA_DMA_SUPPORT_BROKEN
684 select SGI_HAS_INDYDOG
690 select SYS_HAS_CPU_R4X00
691 select SYS_HAS_CPU_R5000
692 select SYS_HAS_EARLY_PRINTK
693 select SYS_SUPPORTS_32BIT_KERNEL
694 select SYS_SUPPORTS_64BIT_KERNEL
695 select SYS_SUPPORTS_BIG_ENDIAN
696 select MIPS_L1_CACHE_SHIFT_7
698 This are the SGI Indy, Challenge S and Indigo2, as well as certain
699 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
700 that runs on these, say Y here.
703 bool "SGI IP27 (Origin200/2000)"
704 select ARCH_HAS_PHYS_TO_DMA
705 select ARCH_SPARSEMEM_ENABLE
708 select ARC_CMDLINE_ONLY
710 select DEFAULT_SGI_PARTITION
711 select SYS_HAS_EARLY_PRINTK
714 select IRQ_DOMAIN_HIERARCHY
715 select NR_CPUS_DEFAULT_64
716 select PCI_DRIVERS_GENERIC
717 select PCI_XTALK_BRIDGE
718 select SYS_HAS_CPU_R10000
719 select SYS_SUPPORTS_64BIT_KERNEL
720 select SYS_SUPPORTS_BIG_ENDIAN
721 select SYS_SUPPORTS_NUMA
722 select SYS_SUPPORTS_SMP
723 select MIPS_L1_CACHE_SHIFT_7
725 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
726 workstations. To compile a Linux kernel that runs on these, say Y
730 bool "SGI IP28 (Indigo2 R10k)"
735 select ARCH_MIGHT_HAVE_PC_SERIO
739 select DEFAULT_SGI_PARTITION
740 select DMA_NONCOHERENT
741 select GENERIC_ISA_DMA_SUPPORT_BROKEN
747 select SGI_HAS_INDYDOG
753 select SYS_HAS_CPU_R10000
754 select SYS_HAS_EARLY_PRINTK
755 select SYS_SUPPORTS_64BIT_KERNEL
756 select SYS_SUPPORTS_BIG_ENDIAN
757 select MIPS_L1_CACHE_SHIFT_7
759 This is the SGI Indigo2 with R10000 processor. To compile a Linux
760 kernel that runs on these, say Y here.
763 bool "SGI IP30 (Octane/Octane2)"
764 select ARCH_HAS_PHYS_TO_DMA
770 select SYNC_R4K if SMP
774 select IRQ_DOMAIN_HIERARCHY
775 select NR_CPUS_DEFAULT_2
776 select PCI_DRIVERS_GENERIC
777 select PCI_XTALK_BRIDGE
778 select SYS_HAS_EARLY_PRINTK
779 select SYS_HAS_CPU_R10000
780 select SYS_SUPPORTS_64BIT_KERNEL
781 select SYS_SUPPORTS_BIG_ENDIAN
782 select SYS_SUPPORTS_SMP
783 select MIPS_L1_CACHE_SHIFT_7
786 These are the SGI Octane and Octane2 graphics workstations. To
787 compile a Linux kernel that runs on these, say Y here.
793 select ARCH_HAS_PHYS_TO_DMA
799 select DMA_NONCOHERENT
802 select R5000_CPU_SCACHE
803 select RM7000_CPU_SCACHE
804 select SYS_HAS_CPU_R5000
805 select SYS_HAS_CPU_R10000 if BROKEN
806 select SYS_HAS_CPU_RM7000
807 select SYS_HAS_CPU_NEVADA
808 select SYS_SUPPORTS_64BIT_KERNEL
809 select SYS_SUPPORTS_BIG_ENDIAN
811 If you want this kernel to run on SGI O2 workstation, say Y here.
814 bool "Sibyte BCM91120C-CRhine"
816 select SIBYTE_BCM1120
818 select SYS_HAS_CPU_SB1
819 select SYS_SUPPORTS_BIG_ENDIAN
820 select SYS_SUPPORTS_LITTLE_ENDIAN
823 bool "Sibyte BCM91120x-Carmel"
825 select SIBYTE_BCM1120
827 select SYS_HAS_CPU_SB1
828 select SYS_SUPPORTS_BIG_ENDIAN
829 select SYS_SUPPORTS_LITTLE_ENDIAN
832 bool "Sibyte BCM91125C-CRhone"
834 select SIBYTE_BCM1125
836 select SYS_HAS_CPU_SB1
837 select SYS_SUPPORTS_BIG_ENDIAN
838 select SYS_SUPPORTS_HIGHMEM
839 select SYS_SUPPORTS_LITTLE_ENDIAN
842 bool "Sibyte BCM91125E-Rhone"
844 select SIBYTE_BCM1125H
846 select SYS_HAS_CPU_SB1
847 select SYS_SUPPORTS_BIG_ENDIAN
848 select SYS_SUPPORTS_LITTLE_ENDIAN
851 bool "Sibyte BCM91250A-SWARM"
853 select HAVE_PATA_PLATFORM
856 select SYS_HAS_CPU_SB1
857 select SYS_SUPPORTS_BIG_ENDIAN
858 select SYS_SUPPORTS_HIGHMEM
859 select SYS_SUPPORTS_LITTLE_ENDIAN
860 select ZONE_DMA32 if 64BIT
861 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
863 config SIBYTE_LITTLESUR
864 bool "Sibyte BCM91250C2-LittleSur"
866 select HAVE_PATA_PLATFORM
869 select SYS_HAS_CPU_SB1
870 select SYS_SUPPORTS_BIG_ENDIAN
871 select SYS_SUPPORTS_HIGHMEM
872 select SYS_SUPPORTS_LITTLE_ENDIAN
873 select ZONE_DMA32 if 64BIT
875 config SIBYTE_SENTOSA
876 bool "Sibyte BCM91250E-Sentosa"
880 select SYS_HAS_CPU_SB1
881 select SYS_SUPPORTS_BIG_ENDIAN
882 select SYS_SUPPORTS_LITTLE_ENDIAN
883 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
886 bool "Sibyte BCM91480B-BigSur"
888 select NR_CPUS_DEFAULT_4
889 select SIBYTE_BCM1x80
891 select SYS_HAS_CPU_SB1
892 select SYS_SUPPORTS_BIG_ENDIAN
893 select SYS_SUPPORTS_HIGHMEM
894 select SYS_SUPPORTS_LITTLE_ENDIAN
895 select ZONE_DMA32 if 64BIT
896 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
899 bool "SNI RM200/300/400"
902 select FW_ARC if CPU_LITTLE_ENDIAN
903 select FW_ARC32 if CPU_LITTLE_ENDIAN
904 select FW_SNIPROM if CPU_BIG_ENDIAN
905 select ARCH_MAY_HAVE_PC_FDC
906 select ARCH_MIGHT_HAVE_PC_PARPORT
907 select ARCH_MIGHT_HAVE_PC_SERIO
911 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
912 select DMA_NONCOHERENT
913 select GENERIC_ISA_DMA
915 select HAVE_PCSPKR_PLATFORM
921 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
922 select SYS_HAS_CPU_R4X00
923 select SYS_HAS_CPU_R5000
924 select SYS_HAS_CPU_R10000
925 select R5000_CPU_SCACHE
926 select SYS_HAS_EARLY_PRINTK
927 select SYS_SUPPORTS_32BIT_KERNEL
928 select SYS_SUPPORTS_64BIT_KERNEL
929 select SYS_SUPPORTS_BIG_ENDIAN
930 select SYS_SUPPORTS_HIGHMEM
931 select SYS_SUPPORTS_LITTLE_ENDIAN
933 The SNI RM200/300/400 are MIPS-based machines manufactured by
934 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
935 Technology and now in turn merged with Fujitsu. Say Y here to
936 support this machine type.
939 bool "Toshiba TX39 series based machines"
942 bool "Toshiba TX49 series based machines"
944 config MIKROTIK_RB532
945 bool "Mikrotik RB532 boards"
948 select DMA_NONCOHERENT
951 select SYS_HAS_CPU_MIPS32_R1
952 select SYS_SUPPORTS_32BIT_KERNEL
953 select SYS_SUPPORTS_LITTLE_ENDIAN
957 select MIPS_L1_CACHE_SHIFT_4
959 Support the Mikrotik(tm) RouterBoard 532 series,
960 based on the IDT RC32434 SoC.
962 config CAVIUM_OCTEON_SOC
963 bool "Cavium Networks Octeon SoC based boards"
965 select ARCH_HAS_PHYS_TO_DMA
967 select PHYS_ADDR_T_64BIT
968 select SYS_SUPPORTS_64BIT_KERNEL
969 select SYS_SUPPORTS_BIG_ENDIAN
971 select EDAC_ATOMIC_SCRUB
972 select SYS_SUPPORTS_LITTLE_ENDIAN
973 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
974 select SYS_HAS_EARLY_PRINTK
975 select SYS_HAS_CPU_CAVIUM_OCTEON
977 select HAVE_PLAT_DELAY
978 select HAVE_PLAT_FW_INIT_CMDLINE
979 select HAVE_PLAT_MEMCPY
984 select ARCH_SPARSEMEM_ENABLE
985 select SYS_SUPPORTS_SMP
986 select NR_CPUS_DEFAULT_64
987 select MIPS_NR_CPU_NR_MAP_1024
989 select MTD_COMPLEX_MAPPINGS
991 select SYS_SUPPORTS_RELOCATABLE
993 This option supports all of the Octeon reference boards from Cavium
994 Networks. It builds a kernel that dynamically determines the Octeon
995 CPU type and supports all known board reference implementations.
996 Some of the supported boards are:
1003 Say Y here for most Octeon reference boards.
1005 config NLM_XLR_BOARD
1006 bool "Netlogic XLR/XLS based systems"
1009 select SYS_HAS_CPU_XLR
1010 select SYS_SUPPORTS_SMP
1012 select SWAP_IO_SPACE
1013 select SYS_SUPPORTS_32BIT_KERNEL
1014 select SYS_SUPPORTS_64BIT_KERNEL
1015 select PHYS_ADDR_T_64BIT
1016 select SYS_SUPPORTS_BIG_ENDIAN
1017 select SYS_SUPPORTS_HIGHMEM
1018 select NR_CPUS_DEFAULT_32
1022 select ZONE_DMA32 if 64BIT
1024 select SYS_HAS_EARLY_PRINTK
1025 select SYS_SUPPORTS_ZBOOT
1026 select SYS_SUPPORTS_ZBOOT_UART16550
1028 Support for systems based on Netlogic XLR and XLS processors.
1029 Say Y here if you have a XLR or XLS based board.
1031 config NLM_XLP_BOARD
1032 bool "Netlogic XLP based systems"
1035 select SYS_HAS_CPU_XLP
1036 select SYS_SUPPORTS_SMP
1038 select SYS_SUPPORTS_32BIT_KERNEL
1039 select SYS_SUPPORTS_64BIT_KERNEL
1040 select PHYS_ADDR_T_64BIT
1042 select SYS_SUPPORTS_BIG_ENDIAN
1043 select SYS_SUPPORTS_LITTLE_ENDIAN
1044 select SYS_SUPPORTS_HIGHMEM
1045 select NR_CPUS_DEFAULT_32
1049 select ZONE_DMA32 if 64BIT
1051 select SYS_HAS_EARLY_PRINTK
1053 select SYS_SUPPORTS_ZBOOT
1054 select SYS_SUPPORTS_ZBOOT_UART16550
1056 This board is based on Netlogic XLP Processor.
1057 Say Y here if you have a XLP based board.
1059 config MIPS_PARAVIRT
1060 bool "Para-Virtualized guest system"
1063 select SYS_SUPPORTS_64BIT_KERNEL
1064 select SYS_SUPPORTS_32BIT_KERNEL
1065 select SYS_SUPPORTS_BIG_ENDIAN
1066 select SYS_SUPPORTS_SMP
1067 select NR_CPUS_DEFAULT_4
1068 select SYS_HAS_EARLY_PRINTK
1069 select SYS_HAS_CPU_MIPS32_R2
1070 select SYS_HAS_CPU_MIPS64_R2
1071 select SYS_HAS_CPU_CAVIUM_OCTEON
1073 select SWAP_IO_SPACE
1075 This option supports guest running under ????
1079 source "arch/mips/alchemy/Kconfig"
1080 source "arch/mips/ath25/Kconfig"
1081 source "arch/mips/ath79/Kconfig"
1082 source "arch/mips/bcm47xx/Kconfig"
1083 source "arch/mips/bcm63xx/Kconfig"
1084 source "arch/mips/bmips/Kconfig"
1085 source "arch/mips/generic/Kconfig"
1086 source "arch/mips/jazz/Kconfig"
1087 source "arch/mips/jz4740/Kconfig"
1088 source "arch/mips/lantiq/Kconfig"
1089 source "arch/mips/lasat/Kconfig"
1090 source "arch/mips/pic32/Kconfig"
1091 source "arch/mips/pistachio/Kconfig"
1092 source "arch/mips/pmcs-msp71xx/Kconfig"
1093 source "arch/mips/ralink/Kconfig"
1094 source "arch/mips/sgi-ip27/Kconfig"
1095 source "arch/mips/sibyte/Kconfig"
1096 source "arch/mips/txx9/Kconfig"
1097 source "arch/mips/vr41xx/Kconfig"
1098 source "arch/mips/cavium-octeon/Kconfig"
1099 source "arch/mips/loongson2ef/Kconfig"
1100 source "arch/mips/loongson32/Kconfig"
1101 source "arch/mips/loongson64/Kconfig"
1102 source "arch/mips/netlogic/Kconfig"
1103 source "arch/mips/paravirt/Kconfig"
1107 config GENERIC_HWEIGHT
1111 config GENERIC_CALIBRATE_DELAY
1115 config SCHED_OMIT_FRAME_POINTER
1120 # Select some configuration options automatically based on user selections.
1125 config ARCH_MAY_HAVE_PC_FDC
1161 config MIPS_CLOCK_VSYSCALL
1162 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1171 config ARCH_SUPPORTS_UPROBES
1174 config DMA_MAYBE_COHERENT
1175 select ARCH_HAS_DMA_COHERENCE_H
1176 select DMA_NONCOHERENT
1179 config DMA_PERDEV_COHERENT
1181 select ARCH_HAS_SETUP_DMA_OPS
1182 select DMA_NONCOHERENT
1184 config DMA_NONCOHERENT
1187 # MIPS allows mixing "slightly different" Cacheability and Coherency
1188 # Attribute bits. It is believed that the uncached access through
1189 # KSEG1 and the implementation specific "uncached accelerated" used
1190 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1191 # significant advantages.
1193 select ARCH_HAS_DMA_WRITE_COMBINE
1194 select ARCH_HAS_DMA_PREP_COHERENT
1195 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1196 select ARCH_HAS_DMA_SET_UNCACHED
1197 select DMA_NONCOHERENT_MMAP
1198 select DMA_NONCOHERENT_CACHE_SYNC
1199 select NEED_DMA_MAP_STATE
1201 config SYS_HAS_EARLY_PRINTK
1204 config SYS_SUPPORTS_HOTPLUG_CPU
1207 config MIPS_BONITO64
1222 config NO_IOPORT_MAP
1226 def_bool CPU_NO_LOAD_STORE_LR
1228 config GENERIC_ISA_DMA
1230 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1233 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1235 select GENERIC_ISA_DMA
1237 config HAVE_PLAT_DELAY
1240 config HAVE_PLAT_FW_INIT_CMDLINE
1243 config HAVE_PLAT_MEMCPY
1249 config HOLES_IN_ZONE
1252 config SYS_SUPPORTS_RELOCATABLE
1255 Selected if the platform supports relocating the kernel.
1256 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1257 to allow access to command line and entropy sources.
1259 config MIPS_CBPF_JIT
1261 depends on BPF_JIT && HAVE_CBPF_JIT
1263 config MIPS_EBPF_JIT
1265 depends on BPF_JIT && HAVE_EBPF_JIT
1269 # Endianness selection. Sufficiently obscure so many users don't know what to
1270 # answer,so we try hard to limit the available choices. Also the use of a
1271 # choice statement should be more obvious to the user.
1274 prompt "Endianness selection"
1276 Some MIPS machines can be configured for either little or big endian
1277 byte order. These modes require different kernels and a different
1278 Linux distribution. In general there is one preferred byteorder for a
1279 particular system but some systems are just as commonly used in the
1280 one or the other endianness.
1282 config CPU_BIG_ENDIAN
1284 depends on SYS_SUPPORTS_BIG_ENDIAN
1286 config CPU_LITTLE_ENDIAN
1287 bool "Little endian"
1288 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1295 config SYS_SUPPORTS_APM_EMULATION
1298 config SYS_SUPPORTS_BIG_ENDIAN
1301 config SYS_SUPPORTS_LITTLE_ENDIAN
1304 config SYS_SUPPORTS_HUGETLBFS
1306 depends on CPU_SUPPORTS_HUGEPAGES
1309 config MIPS_HUGE_TLB_SUPPORT
1310 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1327 config PCI_GT64XXX_PCI0
1330 config PCI_XTALK_BRIDGE
1333 config NO_EXCEPT_FILL
1340 select DMA_NONCOHERENT
1342 select SWAP_IO_SPACE
1343 select SYS_HAS_CPU_R5500
1344 select SYS_SUPPORTS_32BIT_KERNEL
1345 select SYS_SUPPORTS_64BIT_KERNEL
1346 select SYS_SUPPORTS_BIG_ENDIAN
1353 select DMA_NONCOHERENT
1354 select SYS_HAS_CPU_MIPS32_R2
1355 select SYS_SUPPORTS_32BIT_KERNEL
1356 select SYS_SUPPORTS_LITTLE_ENDIAN
1357 select SYS_SUPPORTS_BIG_ENDIAN
1358 select SYS_SUPPORTS_MIPS16
1359 select CPU_MIPSR2_IRQ_VI
1368 config SWAP_IO_SPACE
1371 config SGI_HAS_INDYDOG
1383 config SGI_HAS_ZILOG
1386 config SGI_HAS_I8042
1389 config DEFAULT_SGI_PARTITION
1401 config MIPS_L1_CACHE_SHIFT_4
1404 config MIPS_L1_CACHE_SHIFT_5
1407 config MIPS_L1_CACHE_SHIFT_6
1410 config MIPS_L1_CACHE_SHIFT_7
1413 config MIPS_L1_CACHE_SHIFT
1415 default "7" if MIPS_L1_CACHE_SHIFT_7
1416 default "6" if MIPS_L1_CACHE_SHIFT_6
1417 default "5" if MIPS_L1_CACHE_SHIFT_5
1418 default "4" if MIPS_L1_CACHE_SHIFT_4
1421 config HAVE_STD_PC_SERIAL_PORT
1424 config ARC_CMDLINE_ONLY
1428 bool "ARC console support"
1429 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1443 menu "CPU selection"
1449 config CPU_LOONGSON64
1450 bool "Loongson 64-bit CPU"
1451 depends on SYS_HAS_CPU_LOONGSON64
1452 select ARCH_HAS_PHYS_TO_DMA
1454 select CPU_HAS_PREFETCH
1455 select CPU_SUPPORTS_64BIT_KERNEL
1456 select CPU_SUPPORTS_HIGHMEM
1457 select CPU_SUPPORTS_HUGEPAGES
1458 select CPU_SUPPORTS_MSA
1459 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1460 select CPU_MIPSR2_IRQ_VI
1461 select WEAK_ORDERING
1462 select WEAK_REORDERING_BEYOND_LLSC
1463 select MIPS_ASID_BITS_VARIABLE
1464 select MIPS_PGD_C0_CONTEXT
1465 select MIPS_L1_CACHE_SHIFT_6
1469 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1470 cores implements the MIPS64R2 instruction set with many extensions,
1471 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1472 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1473 Loongson-2E/2F is not covered here and will be removed in future.
1475 config LOONGSON3_ENHANCEMENT
1476 bool "New Loongson-3 CPU Enhancements"
1478 depends on CPU_LOONGSON64
1480 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1481 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1482 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1483 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1484 Fast TLB refill support, etc.
1486 This option enable those enhancements which are not probed at run
1487 time. If you want a generic kernel to run on all Loongson 3 machines,
1488 please say 'N' here. If you want a high-performance kernel to run on
1489 new Loongson-3 machines only, please say 'Y' here.
1491 config CPU_LOONGSON3_WORKAROUNDS
1492 bool "Old Loongson-3 LLSC Workarounds"
1494 depends on CPU_LOONGSON64
1496 Loongson-3 processors have the llsc issues which require workarounds.
1497 Without workarounds the system may hang unexpectedly.
1499 Newer Loongson-3 will fix these issues and no workarounds are needed.
1500 The workarounds have no significant side effect on them but may
1501 decrease the performance of the system so this option should be
1502 disabled unless the kernel is intended to be run on old systems.
1504 If unsure, please say Y.
1506 config CPU_LOONGSON2E
1508 depends on SYS_HAS_CPU_LOONGSON2E
1509 select CPU_LOONGSON2EF
1511 The Loongson 2E processor implements the MIPS III instruction set
1512 with many extensions.
1514 It has an internal FPGA northbridge, which is compatible to
1517 config CPU_LOONGSON2F
1519 depends on SYS_HAS_CPU_LOONGSON2F
1520 select CPU_LOONGSON2EF
1523 The Loongson 2F processor implements the MIPS III instruction set
1524 with many extensions.
1526 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1527 have a similar programming interface with FPGA northbridge used in
1530 config CPU_LOONGSON1B
1532 depends on SYS_HAS_CPU_LOONGSON1B
1533 select CPU_LOONGSON32
1534 select LEDS_GPIO_REGISTER
1536 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1537 Release 1 instruction set and part of the MIPS32 Release 2
1540 config CPU_LOONGSON1C
1542 depends on SYS_HAS_CPU_LOONGSON1C
1543 select CPU_LOONGSON32
1544 select LEDS_GPIO_REGISTER
1546 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1547 Release 1 instruction set and part of the MIPS32 Release 2
1550 config CPU_MIPS32_R1
1551 bool "MIPS32 Release 1"
1552 depends on SYS_HAS_CPU_MIPS32_R1
1553 select CPU_HAS_PREFETCH
1554 select CPU_SUPPORTS_32BIT_KERNEL
1555 select CPU_SUPPORTS_HIGHMEM
1557 Choose this option to build a kernel for release 1 or later of the
1558 MIPS32 architecture. Most modern embedded systems with a 32-bit
1559 MIPS processor are based on a MIPS32 processor. If you know the
1560 specific type of processor in your system, choose those that one
1561 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1562 Release 2 of the MIPS32 architecture is available since several
1563 years so chances are you even have a MIPS32 Release 2 processor
1564 in which case you should choose CPU_MIPS32_R2 instead for better
1567 config CPU_MIPS32_R2
1568 bool "MIPS32 Release 2"
1569 depends on SYS_HAS_CPU_MIPS32_R2
1570 select CPU_HAS_PREFETCH
1571 select CPU_SUPPORTS_32BIT_KERNEL
1572 select CPU_SUPPORTS_HIGHMEM
1573 select CPU_SUPPORTS_MSA
1576 Choose this option to build a kernel for release 2 or later of the
1577 MIPS32 architecture. Most modern embedded systems with a 32-bit
1578 MIPS processor are based on a MIPS32 processor. If you know the
1579 specific type of processor in your system, choose those that one
1580 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1582 config CPU_MIPS32_R6
1583 bool "MIPS32 Release 6"
1584 depends on SYS_HAS_CPU_MIPS32_R6
1585 select CPU_HAS_PREFETCH
1586 select CPU_NO_LOAD_STORE_LR
1587 select CPU_SUPPORTS_32BIT_KERNEL
1588 select CPU_SUPPORTS_HIGHMEM
1589 select CPU_SUPPORTS_MSA
1591 select MIPS_O32_FP64_SUPPORT
1593 Choose this option to build a kernel for release 6 or later of the
1594 MIPS32 architecture. New MIPS processors, starting with the Warrior
1595 family, are based on a MIPS32r6 processor. If you own an older
1596 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1598 config CPU_MIPS64_R1
1599 bool "MIPS64 Release 1"
1600 depends on SYS_HAS_CPU_MIPS64_R1
1601 select CPU_HAS_PREFETCH
1602 select CPU_SUPPORTS_32BIT_KERNEL
1603 select CPU_SUPPORTS_64BIT_KERNEL
1604 select CPU_SUPPORTS_HIGHMEM
1605 select CPU_SUPPORTS_HUGEPAGES
1607 Choose this option to build a kernel for release 1 or later of the
1608 MIPS64 architecture. Many modern embedded systems with a 64-bit
1609 MIPS processor are based on a MIPS64 processor. If you know the
1610 specific type of processor in your system, choose those that one
1611 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1612 Release 2 of the MIPS64 architecture is available since several
1613 years so chances are you even have a MIPS64 Release 2 processor
1614 in which case you should choose CPU_MIPS64_R2 instead for better
1617 config CPU_MIPS64_R2
1618 bool "MIPS64 Release 2"
1619 depends on SYS_HAS_CPU_MIPS64_R2
1620 select CPU_HAS_PREFETCH
1621 select CPU_SUPPORTS_32BIT_KERNEL
1622 select CPU_SUPPORTS_64BIT_KERNEL
1623 select CPU_SUPPORTS_HIGHMEM
1624 select CPU_SUPPORTS_HUGEPAGES
1625 select CPU_SUPPORTS_MSA
1628 Choose this option to build a kernel for release 2 or later of the
1629 MIPS64 architecture. Many modern embedded systems with a 64-bit
1630 MIPS processor are based on a MIPS64 processor. If you know the
1631 specific type of processor in your system, choose those that one
1632 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1634 config CPU_MIPS64_R6
1635 bool "MIPS64 Release 6"
1636 depends on SYS_HAS_CPU_MIPS64_R6
1637 select CPU_HAS_PREFETCH
1638 select CPU_NO_LOAD_STORE_LR
1639 select CPU_SUPPORTS_32BIT_KERNEL
1640 select CPU_SUPPORTS_64BIT_KERNEL
1641 select CPU_SUPPORTS_HIGHMEM
1642 select CPU_SUPPORTS_HUGEPAGES
1643 select CPU_SUPPORTS_MSA
1644 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1647 Choose this option to build a kernel for release 6 or later of the
1648 MIPS64 architecture. New MIPS processors, starting with the Warrior
1649 family, are based on a MIPS64r6 processor. If you own an older
1650 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1654 depends on SYS_HAS_CPU_R3000
1657 select CPU_SUPPORTS_32BIT_KERNEL
1658 select CPU_SUPPORTS_HIGHMEM
1660 Please make sure to pick the right CPU type. Linux/MIPS is not
1661 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1662 *not* work on R4000 machines and vice versa. However, since most
1663 of the supported machines have an R4000 (or similar) CPU, R4x00
1664 might be a safe bet. If the resulting kernel does not work,
1665 try to recompile with R3000.
1669 depends on SYS_HAS_CPU_TX39XX
1670 select CPU_SUPPORTS_32BIT_KERNEL
1675 depends on SYS_HAS_CPU_VR41XX
1676 select CPU_SUPPORTS_32BIT_KERNEL
1677 select CPU_SUPPORTS_64BIT_KERNEL
1679 The options selects support for the NEC VR4100 series of processors.
1680 Only choose this option if you have one of these processors as a
1681 kernel built with this option will not run on any other type of
1682 processor or vice versa.
1686 depends on SYS_HAS_CPU_R4X00
1687 select CPU_SUPPORTS_32BIT_KERNEL
1688 select CPU_SUPPORTS_64BIT_KERNEL
1689 select CPU_SUPPORTS_HUGEPAGES
1691 MIPS Technologies R4000-series processors other than 4300, including
1692 the R4000, R4400, R4600, and 4700.
1696 depends on SYS_HAS_CPU_TX49XX
1697 select CPU_HAS_PREFETCH
1698 select CPU_SUPPORTS_32BIT_KERNEL
1699 select CPU_SUPPORTS_64BIT_KERNEL
1700 select CPU_SUPPORTS_HUGEPAGES
1704 depends on SYS_HAS_CPU_R5000
1705 select CPU_SUPPORTS_32BIT_KERNEL
1706 select CPU_SUPPORTS_64BIT_KERNEL
1707 select CPU_SUPPORTS_HUGEPAGES
1709 MIPS Technologies R5000-series processors other than the Nevada.
1713 depends on SYS_HAS_CPU_R5500
1714 select CPU_SUPPORTS_32BIT_KERNEL
1715 select CPU_SUPPORTS_64BIT_KERNEL
1716 select CPU_SUPPORTS_HUGEPAGES
1718 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1723 depends on SYS_HAS_CPU_NEVADA
1724 select CPU_SUPPORTS_32BIT_KERNEL
1725 select CPU_SUPPORTS_64BIT_KERNEL
1726 select CPU_SUPPORTS_HUGEPAGES
1728 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1732 depends on SYS_HAS_CPU_R10000
1733 select CPU_HAS_PREFETCH
1734 select CPU_SUPPORTS_32BIT_KERNEL
1735 select CPU_SUPPORTS_64BIT_KERNEL
1736 select CPU_SUPPORTS_HIGHMEM
1737 select CPU_SUPPORTS_HUGEPAGES
1739 MIPS Technologies R10000-series processors.
1743 depends on SYS_HAS_CPU_RM7000
1744 select CPU_HAS_PREFETCH
1745 select CPU_SUPPORTS_32BIT_KERNEL
1746 select CPU_SUPPORTS_64BIT_KERNEL
1747 select CPU_SUPPORTS_HIGHMEM
1748 select CPU_SUPPORTS_HUGEPAGES
1752 depends on SYS_HAS_CPU_SB1
1753 select CPU_SUPPORTS_32BIT_KERNEL
1754 select CPU_SUPPORTS_64BIT_KERNEL
1755 select CPU_SUPPORTS_HIGHMEM
1756 select CPU_SUPPORTS_HUGEPAGES
1757 select WEAK_ORDERING
1759 config CPU_CAVIUM_OCTEON
1760 bool "Cavium Octeon processor"
1761 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1762 select CPU_HAS_PREFETCH
1763 select CPU_SUPPORTS_64BIT_KERNEL
1764 select WEAK_ORDERING
1765 select CPU_SUPPORTS_HIGHMEM
1766 select CPU_SUPPORTS_HUGEPAGES
1767 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1768 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1769 select MIPS_L1_CACHE_SHIFT_7
1772 The Cavium Octeon processor is a highly integrated chip containing
1773 many ethernet hardware widgets for networking tasks. The processor
1774 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1775 Full details can be found at http://www.caviumnetworks.com.
1778 bool "Broadcom BMIPS"
1779 depends on SYS_HAS_CPU_BMIPS
1781 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1782 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1783 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1784 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1785 select CPU_SUPPORTS_32BIT_KERNEL
1786 select DMA_NONCOHERENT
1788 select SWAP_IO_SPACE
1789 select WEAK_ORDERING
1790 select CPU_SUPPORTS_HIGHMEM
1791 select CPU_HAS_PREFETCH
1792 select CPU_SUPPORTS_CPUFREQ
1793 select MIPS_EXTERNAL_TIMER
1795 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1798 bool "Netlogic XLR SoC"
1799 depends on SYS_HAS_CPU_XLR
1800 select CPU_SUPPORTS_32BIT_KERNEL
1801 select CPU_SUPPORTS_64BIT_KERNEL
1802 select CPU_SUPPORTS_HIGHMEM
1803 select CPU_SUPPORTS_HUGEPAGES
1804 select WEAK_ORDERING
1805 select WEAK_REORDERING_BEYOND_LLSC
1807 Netlogic Microsystems XLR/XLS processors.
1810 bool "Netlogic XLP SoC"
1811 depends on SYS_HAS_CPU_XLP
1812 select CPU_SUPPORTS_32BIT_KERNEL
1813 select CPU_SUPPORTS_64BIT_KERNEL
1814 select CPU_SUPPORTS_HIGHMEM
1815 select WEAK_ORDERING
1816 select WEAK_REORDERING_BEYOND_LLSC
1817 select CPU_HAS_PREFETCH
1819 select CPU_SUPPORTS_HUGEPAGES
1820 select MIPS_ASID_BITS_VARIABLE
1822 Netlogic Microsystems XLP processors.
1825 config CPU_MIPS32_3_5_FEATURES
1826 bool "MIPS32 Release 3.5 Features"
1827 depends on SYS_HAS_CPU_MIPS32_R3_5
1828 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1830 Choose this option to build a kernel for release 2 or later of the
1831 MIPS32 architecture including features from the 3.5 release such as
1832 support for Enhanced Virtual Addressing (EVA).
1834 config CPU_MIPS32_3_5_EVA
1835 bool "Enhanced Virtual Addressing (EVA)"
1836 depends on CPU_MIPS32_3_5_FEATURES
1840 Choose this option if you want to enable the Enhanced Virtual
1841 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1842 One of its primary benefits is an increase in the maximum size
1843 of lowmem (up to 3GB). If unsure, say 'N' here.
1845 config CPU_MIPS32_R5_FEATURES
1846 bool "MIPS32 Release 5 Features"
1847 depends on SYS_HAS_CPU_MIPS32_R5
1848 depends on CPU_MIPS32_R2
1850 Choose this option to build a kernel for release 2 or later of the
1851 MIPS32 architecture including features from release 5 such as
1852 support for Extended Physical Addressing (XPA).
1854 config CPU_MIPS32_R5_XPA
1855 bool "Extended Physical Addressing (XPA)"
1856 depends on CPU_MIPS32_R5_FEATURES
1858 depends on !PAGE_SIZE_4KB
1859 depends on SYS_SUPPORTS_HIGHMEM
1862 select PHYS_ADDR_T_64BIT
1865 Choose this option if you want to enable the Extended Physical
1866 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1867 benefit is to increase physical addressing equal to or greater
1868 than 40 bits. Note that this has the side effect of turning on
1869 64-bit addressing which in turn makes the PTEs 64-bit in size.
1870 If unsure, say 'N' here.
1873 config CPU_NOP_WORKAROUNDS
1876 config CPU_JUMP_WORKAROUNDS
1879 config CPU_LOONGSON2F_WORKAROUNDS
1880 bool "Loongson 2F Workarounds"
1882 select CPU_NOP_WORKAROUNDS
1883 select CPU_JUMP_WORKAROUNDS
1885 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1886 require workarounds. Without workarounds the system may hang
1887 unexpectedly. For more information please refer to the gas
1888 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1890 Loongson 2F03 and later have fixed these issues and no workarounds
1891 are needed. The workarounds have no significant side effect on them
1892 but may decrease the performance of the system so this option should
1893 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1896 If unsure, please say Y.
1897 endif # CPU_LOONGSON2F
1899 config SYS_SUPPORTS_ZBOOT
1901 select HAVE_KERNEL_GZIP
1902 select HAVE_KERNEL_BZIP2
1903 select HAVE_KERNEL_LZ4
1904 select HAVE_KERNEL_LZMA
1905 select HAVE_KERNEL_LZO
1906 select HAVE_KERNEL_XZ
1908 config SYS_SUPPORTS_ZBOOT_UART16550
1910 select SYS_SUPPORTS_ZBOOT
1912 config SYS_SUPPORTS_ZBOOT_UART_PROM
1914 select SYS_SUPPORTS_ZBOOT
1916 config CPU_LOONGSON2EF
1918 select CPU_SUPPORTS_32BIT_KERNEL
1919 select CPU_SUPPORTS_64BIT_KERNEL
1920 select CPU_SUPPORTS_HIGHMEM
1921 select CPU_SUPPORTS_HUGEPAGES
1922 select ARCH_HAS_PHYS_TO_DMA
1924 config CPU_LOONGSON32
1928 select CPU_HAS_PREFETCH
1929 select CPU_SUPPORTS_32BIT_KERNEL
1930 select CPU_SUPPORTS_HIGHMEM
1931 select CPU_SUPPORTS_CPUFREQ
1933 config CPU_BMIPS32_3300
1934 select SMP_UP if SMP
1937 config CPU_BMIPS4350
1939 select SYS_SUPPORTS_SMP
1940 select SYS_SUPPORTS_HOTPLUG_CPU
1942 config CPU_BMIPS4380
1944 select MIPS_L1_CACHE_SHIFT_6
1945 select SYS_SUPPORTS_SMP
1946 select SYS_SUPPORTS_HOTPLUG_CPU
1949 config CPU_BMIPS5000
1951 select MIPS_CPU_SCACHE
1952 select MIPS_L1_CACHE_SHIFT_7
1953 select SYS_SUPPORTS_SMP
1954 select SYS_SUPPORTS_HOTPLUG_CPU
1957 config SYS_HAS_CPU_LOONGSON64
1959 select CPU_SUPPORTS_CPUFREQ
1962 config SYS_HAS_CPU_LOONGSON2E
1965 config SYS_HAS_CPU_LOONGSON2F
1967 select CPU_SUPPORTS_CPUFREQ
1968 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1970 config SYS_HAS_CPU_LOONGSON1B
1973 config SYS_HAS_CPU_LOONGSON1C
1976 config SYS_HAS_CPU_MIPS32_R1
1979 config SYS_HAS_CPU_MIPS32_R2
1982 config SYS_HAS_CPU_MIPS32_R3_5
1985 config SYS_HAS_CPU_MIPS32_R5
1987 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1989 config SYS_HAS_CPU_MIPS32_R6
1991 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1993 config SYS_HAS_CPU_MIPS64_R1
1996 config SYS_HAS_CPU_MIPS64_R2
1999 config SYS_HAS_CPU_MIPS64_R6
2001 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2003 config SYS_HAS_CPU_R3000
2006 config SYS_HAS_CPU_TX39XX
2009 config SYS_HAS_CPU_VR41XX
2012 config SYS_HAS_CPU_R4X00
2015 config SYS_HAS_CPU_TX49XX
2018 config SYS_HAS_CPU_R5000
2021 config SYS_HAS_CPU_R5500
2024 config SYS_HAS_CPU_NEVADA
2027 config SYS_HAS_CPU_R10000
2029 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2031 config SYS_HAS_CPU_RM7000
2034 config SYS_HAS_CPU_SB1
2037 config SYS_HAS_CPU_CAVIUM_OCTEON
2040 config SYS_HAS_CPU_BMIPS
2043 config SYS_HAS_CPU_BMIPS32_3300
2045 select SYS_HAS_CPU_BMIPS
2047 config SYS_HAS_CPU_BMIPS4350
2049 select SYS_HAS_CPU_BMIPS
2051 config SYS_HAS_CPU_BMIPS4380
2053 select SYS_HAS_CPU_BMIPS
2055 config SYS_HAS_CPU_BMIPS5000
2057 select SYS_HAS_CPU_BMIPS
2058 select ARCH_HAS_SYNC_DMA_FOR_CPU
2060 config SYS_HAS_CPU_XLR
2063 config SYS_HAS_CPU_XLP
2067 # CPU may reorder R->R, R->W, W->R, W->W
2068 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2070 config WEAK_ORDERING
2074 # CPU may reorder reads and writes beyond LL/SC
2075 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2077 config WEAK_REORDERING_BEYOND_LLSC
2082 # These two indicate any level of the MIPS32 and MIPS64 architecture
2086 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2090 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2093 # These indicate the revision of the architecture
2097 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2101 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2103 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2108 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2110 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2111 select HAVE_ARCH_BITREVERSE
2112 select MIPS_ASID_BITS_VARIABLE
2113 select MIPS_CRC_SUPPORT
2116 config TARGET_ISA_REV
2118 default 1 if CPU_MIPSR1
2119 default 2 if CPU_MIPSR2
2120 default 6 if CPU_MIPSR6
2123 Reflects the ISA revision being targeted by the kernel build. This
2124 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2132 config SYS_SUPPORTS_32BIT_KERNEL
2134 config SYS_SUPPORTS_64BIT_KERNEL
2136 config CPU_SUPPORTS_32BIT_KERNEL
2138 config CPU_SUPPORTS_64BIT_KERNEL
2140 config CPU_SUPPORTS_CPUFREQ
2142 config CPU_SUPPORTS_ADDRWINCFG
2144 config CPU_SUPPORTS_HUGEPAGES
2146 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2147 config MIPS_PGD_C0_CONTEXT
2149 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2152 # Set to y for ptrace access to watch registers.
2154 config HARDWARE_WATCHPOINTS
2156 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2161 prompt "Kernel code model"
2163 You should only select this option if you have a workload that
2164 actually benefits from 64-bit processing or if your machine has
2165 large memory. You will only be presented a single option in this
2166 menu if your system does not support both 32-bit and 64-bit kernels.
2169 bool "32-bit kernel"
2170 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2173 Select this option if you want to build a 32-bit kernel.
2176 bool "64-bit kernel"
2177 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2179 Select this option if you want to build a 64-bit kernel.
2184 bool "KVM Guest Kernel"
2185 depends on BROKEN_ON_SMP
2187 Select this option if building a guest kernel for KVM (Trap & Emulate)
2190 config KVM_GUEST_TIMER_FREQ
2191 int "Count/Compare Timer Frequency (MHz)"
2192 depends on KVM_GUEST
2195 Set this to non-zero if building a guest kernel for KVM to skip RTC
2196 emulation when determining guest CPU Frequency. Instead, the guest's
2197 timer frequency is specified directly.
2199 config MIPS_VA_BITS_48
2200 bool "48 bits virtual memory"
2203 Support a maximum at least 48 bits of application virtual
2204 memory. Default is 40 bits or less, depending on the CPU.
2205 For page sizes 16k and above, this option results in a small
2206 memory overhead for page tables. For 4k page size, a fourth
2207 level of page tables is added which imposes both a memory
2208 overhead as well as slower TLB fault handling.
2213 prompt "Kernel page size"
2214 default PAGE_SIZE_4KB
2216 config PAGE_SIZE_4KB
2218 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2220 This option select the standard 4kB Linux page size. On some
2221 R3000-family processors this is the only available page size. Using
2222 4kB page size will minimize memory consumption and is therefore
2223 recommended for low memory systems.
2225 config PAGE_SIZE_8KB
2227 depends on CPU_CAVIUM_OCTEON
2228 depends on !MIPS_VA_BITS_48
2230 Using 8kB page size will result in higher performance kernel at
2231 the price of higher memory consumption. This option is available
2232 only on cnMIPS processors. Note that you will need a suitable Linux
2233 distribution to support this.
2235 config PAGE_SIZE_16KB
2237 depends on !CPU_R3000 && !CPU_TX39XX
2239 Using 16kB page size will result in higher performance kernel at
2240 the price of higher memory consumption. This option is available on
2241 all non-R3000 family processors. Note that you will need a suitable
2242 Linux distribution to support this.
2244 config PAGE_SIZE_32KB
2246 depends on CPU_CAVIUM_OCTEON
2247 depends on !MIPS_VA_BITS_48
2249 Using 32kB page size will result in higher performance kernel at
2250 the price of higher memory consumption. This option is available
2251 only on cnMIPS cores. Note that you will need a suitable Linux
2252 distribution to support this.
2254 config PAGE_SIZE_64KB
2256 depends on !CPU_R3000 && !CPU_TX39XX
2258 Using 64kB page size will result in higher performance kernel at
2259 the price of higher memory consumption. This option is available on
2260 all non-R3000 family processor. Not that at the time of this
2261 writing this option is still high experimental.
2265 config FORCE_MAX_ZONEORDER
2266 int "Maximum zone order"
2267 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2268 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2269 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2270 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2271 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2272 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2276 The kernel memory allocator divides physically contiguous memory
2277 blocks into "zones", where each zone is a power of two number of
2278 pages. This option selects the largest power of two that the kernel
2279 keeps in the memory allocator. If you need to allocate very large
2280 blocks of physically contiguous memory, then you may need to
2281 increase this value.
2283 This config option is actually maximum order plus one. For example,
2284 a value of 11 means that the largest free memory block is 2^10 pages.
2286 The page size is not necessarily 4KB. Keep this in mind
2287 when choosing a value for this option.
2292 config IP22_CPU_SCACHE
2297 # Support for a MIPS32 / MIPS64 style S-caches
2299 config MIPS_CPU_SCACHE
2303 config R5000_CPU_SCACHE
2307 config RM7000_CPU_SCACHE
2311 config SIBYTE_DMA_PAGEOPS
2312 bool "Use DMA to clear/copy pages"
2315 Instead of using the CPU to zero and copy pages, use a Data Mover
2316 channel. These DMA channels are otherwise unused by the standard
2317 SiByte Linux port. Seems to give a small performance benefit.
2319 config CPU_HAS_PREFETCH
2322 config CPU_GENERIC_DUMP_TLB
2324 default y if !(CPU_R3000 || CPU_TX39XX)
2326 config MIPS_FP_SUPPORT
2327 bool "Floating Point support" if EXPERT
2330 Select y to include support for floating point in the kernel
2331 including initialization of FPU hardware, FP context save & restore
2332 and emulation of an FPU where necessary. Without this support any
2333 userland program attempting to use floating point instructions will
2336 If you know that your userland will not attempt to use floating point
2337 instructions then you can say n here to shrink the kernel a little.
2341 config CPU_R2300_FPU
2343 depends on MIPS_FP_SUPPORT
2344 default y if CPU_R3000 || CPU_TX39XX
2351 depends on MIPS_FP_SUPPORT
2352 default y if !CPU_R2300_FPU
2354 config CPU_R4K_CACHE_TLB
2356 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2359 bool "MIPS MT SMP support (1 TC on each available VPE)"
2361 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2362 select CPU_MIPSR2_IRQ_VI
2363 select CPU_MIPSR2_IRQ_EI
2368 select SYS_SUPPORTS_SMP
2369 select SYS_SUPPORTS_SCHED_SMT
2370 select MIPS_PERF_SHARED_TC_COUNTERS
2372 This is a kernel model which is known as SMVP. This is supported
2373 on cores with the MT ASE and uses the available VPEs to implement
2374 virtual processors which supports SMP. This is equivalent to the
2375 Intel Hyperthreading feature. For further information go to
2376 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2382 bool "SMT (multithreading) scheduler support"
2383 depends on SYS_SUPPORTS_SCHED_SMT
2386 SMT scheduler support improves the CPU scheduler's decision making
2387 when dealing with MIPS MT enabled cores at a cost of slightly
2388 increased overhead in some places. If unsure say N here.
2390 config SYS_SUPPORTS_SCHED_SMT
2393 config SYS_SUPPORTS_MULTITHREADING
2396 config MIPS_MT_FPAFF
2397 bool "Dynamic FPU affinity for FP-intensive threads"
2399 depends on MIPS_MT_SMP
2401 config MIPSR2_TO_R6_EMULATOR
2402 bool "MIPS R2-to-R6 emulator"
2403 depends on CPU_MIPSR6
2404 depends on MIPS_FP_SUPPORT
2407 Choose this option if you want to run non-R6 MIPS userland code.
2408 Even if you say 'Y' here, the emulator will still be disabled by
2409 default. You can enable it using the 'mipsr2emu' kernel option.
2410 The only reason this is a build-time option is to save ~14K from the
2413 config SYS_SUPPORTS_VPE_LOADER
2415 depends on SYS_SUPPORTS_MULTITHREADING
2417 Indicates that the platform supports the VPE loader, and provides
2420 config MIPS_VPE_LOADER
2421 bool "VPE loader support."
2422 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2423 select CPU_MIPSR2_IRQ_VI
2424 select CPU_MIPSR2_IRQ_EI
2427 Includes a loader for loading an elf relocatable object
2428 onto another VPE and running it.
2430 config MIPS_VPE_LOADER_CMP
2433 depends on MIPS_VPE_LOADER && MIPS_CMP
2435 config MIPS_VPE_LOADER_MT
2438 depends on MIPS_VPE_LOADER && !MIPS_CMP
2440 config MIPS_VPE_LOADER_TOM
2441 bool "Load VPE program into memory hidden from linux"
2442 depends on MIPS_VPE_LOADER
2445 The loader can use memory that is present but has been hidden from
2446 Linux using the kernel command line option "mem=xxMB". It's up to
2447 you to ensure the amount you put in the option and the space your
2448 program requires is less or equal to the amount physically present.
2450 config MIPS_VPE_APSP_API
2451 bool "Enable support for AP/SP API (RTLX)"
2452 depends on MIPS_VPE_LOADER
2454 config MIPS_VPE_APSP_API_CMP
2457 depends on MIPS_VPE_APSP_API && MIPS_CMP
2459 config MIPS_VPE_APSP_API_MT
2462 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2465 bool "MIPS CMP framework support (DEPRECATED)"
2466 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2469 select SYS_SUPPORTS_SMP
2470 select WEAK_ORDERING
2473 Select this if you are using a bootloader which implements the "CMP
2474 framework" protocol (ie. YAMON) and want your kernel to make use of
2475 its ability to start secondary CPUs.
2477 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2481 bool "MIPS Coherent Processing System support"
2482 depends on SYS_SUPPORTS_MIPS_CPS
2484 select MIPS_CPS_PM if HOTPLUG_CPU
2486 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2487 select SYS_SUPPORTS_HOTPLUG_CPU
2488 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2489 select SYS_SUPPORTS_SMP
2490 select WEAK_ORDERING
2492 Select this if you wish to run an SMP kernel across multiple cores
2493 within a MIPS Coherent Processing System. When this option is
2494 enabled the kernel will probe for other cores and boot them with
2495 no external assistance. It is safe to enable this when hardware
2496 support is unavailable.
2509 config SB1_PASS_2_WORKAROUNDS
2511 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2514 config SB1_PASS_2_1_WORKAROUNDS
2516 depends on CPU_SB1 && CPU_SB1_PASS_2
2520 prompt "SmartMIPS or microMIPS ASE support"
2522 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2525 Select this if you want neither microMIPS nor SmartMIPS support
2527 config CPU_HAS_SMARTMIPS
2528 depends on SYS_SUPPORTS_SMARTMIPS
2531 SmartMIPS is a extension of the MIPS32 architecture aimed at
2532 increased security at both hardware and software level for
2533 smartcards. Enabling this option will allow proper use of the
2534 SmartMIPS instructions by Linux applications. However a kernel with
2535 this option will not work on a MIPS core without SmartMIPS core. If
2536 you don't know you probably don't have SmartMIPS and should say N
2539 config CPU_MICROMIPS
2540 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2543 When this option is enabled the kernel will be built using the
2549 bool "Support for the MIPS SIMD Architecture"
2550 depends on CPU_SUPPORTS_MSA
2551 depends on MIPS_FP_SUPPORT
2552 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2554 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2555 and a set of SIMD instructions to operate on them. When this option
2556 is enabled the kernel will support allocating & switching MSA
2557 vector register contexts. If you know that your kernel will only be
2558 running on CPUs which do not support MSA or that your userland will
2559 not be making use of it then you may wish to say N here to reduce
2560 the size & complexity of your kernel.
2571 depends on !CPU_DIEI_BROKEN
2574 config CPU_DIEI_BROKEN
2580 config CPU_NO_LOAD_STORE_LR
2583 CPU lacks support for unaligned load and store instructions:
2584 LWL, LWR, SWL, SWR (Load/store word left/right).
2585 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2589 # Vectored interrupt mode is an R2 feature
2591 config CPU_MIPSR2_IRQ_VI
2595 # Extended interrupt mode is an R2 feature
2597 config CPU_MIPSR2_IRQ_EI
2602 depends on !CPU_R3000
2608 config CPU_DADDI_WORKAROUNDS
2611 config CPU_R4000_WORKAROUNDS
2613 select CPU_R4400_WORKAROUNDS
2615 config CPU_R4400_WORKAROUNDS
2618 config CPU_R4X00_BUGS64
2620 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2622 config MIPS_ASID_SHIFT
2624 default 6 if CPU_R3000 || CPU_TX39XX
2627 config MIPS_ASID_BITS
2629 default 0 if MIPS_ASID_BITS_VARIABLE
2630 default 6 if CPU_R3000 || CPU_TX39XX
2633 config MIPS_ASID_BITS_VARIABLE
2636 config MIPS_CRC_SUPPORT
2640 # - Highmem only makes sense for the 32-bit kernel.
2641 # - The current highmem code will only work properly on physically indexed
2642 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2643 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2644 # moment we protect the user and offer the highmem option only on machines
2645 # where it's known to be safe. This will not offer highmem on a few systems
2646 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2647 # indexed CPUs but we're playing safe.
2648 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2649 # know they might have memory configurations that could make use of highmem
2653 bool "High Memory Support"
2654 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2656 config CPU_SUPPORTS_HIGHMEM
2659 config SYS_SUPPORTS_HIGHMEM
2662 config SYS_SUPPORTS_SMARTMIPS
2665 config SYS_SUPPORTS_MICROMIPS
2668 config SYS_SUPPORTS_MIPS16
2671 This option must be set if a kernel might be executed on a MIPS16-
2672 enabled CPU even if MIPS16 is not actually being used. In other
2673 words, it makes the kernel MIPS16-tolerant.
2675 config CPU_SUPPORTS_MSA
2678 config ARCH_FLATMEM_ENABLE
2680 depends on !NUMA && !CPU_LOONGSON2EF
2682 config ARCH_SPARSEMEM_ENABLE
2684 select SPARSEMEM_STATIC if !SGI_IP27
2688 depends on SYS_SUPPORTS_NUMA
2690 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2691 Access). This option improves performance on systems with more
2692 than two nodes; on two node systems it is generally better to
2693 leave it disabled; on single node systems leave this option
2696 config SYS_SUPPORTS_NUMA
2699 config HAVE_SETUP_PER_CPU_AREA
2703 config NEED_PER_CPU_EMBED_FIRST_CHUNK
2708 bool "Relocatable kernel"
2709 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2711 This builds a kernel image that retains relocation information
2712 so it can be loaded someplace besides the default 1MB.
2713 The relocations make the kernel binary about 15% larger,
2714 but are discarded at runtime
2716 config RELOCATION_TABLE_SIZE
2717 hex "Relocation table size"
2718 depends on RELOCATABLE
2719 range 0x0 0x01000000
2720 default "0x00100000"
2722 A table of relocation data will be appended to the kernel binary
2723 and parsed at boot to fix up the relocated kernel.
2725 This option allows the amount of space reserved for the table to be
2726 adjusted, although the default of 1Mb should be ok in most cases.
2728 The build will fail and a valid size suggested if this is too small.
2730 If unsure, leave at the default value.
2732 config RANDOMIZE_BASE
2733 bool "Randomize the address of the kernel image"
2734 depends on RELOCATABLE
2736 Randomizes the physical and virtual address at which the
2737 kernel image is loaded, as a security feature that
2738 deters exploit attempts relying on knowledge of the location
2739 of kernel internals.
2741 Entropy is generated using any coprocessor 0 registers available.
2743 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2747 config RANDOMIZE_BASE_MAX_OFFSET
2748 hex "Maximum kASLR offset" if EXPERT
2749 depends on RANDOMIZE_BASE
2750 range 0x0 0x40000000 if EVA || 64BIT
2751 range 0x0 0x08000000
2752 default "0x01000000"
2754 When kASLR is active, this provides the maximum offset that will
2755 be applied to the kernel image. It should be set according to the
2756 amount of physical RAM available in the target system minus
2757 PHYSICAL_START and must be a power of 2.
2759 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2760 EVA or 64-bit. The default is 16Mb.
2765 depends on NEED_MULTIPLE_NODES
2767 config HW_PERF_EVENTS
2768 bool "Enable hardware performance counter support for perf events"
2769 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2772 Enable hardware performance counter support for perf events. If
2773 disabled, perf events will use software events only.
2776 bool "Enable DMI scanning"
2777 depends on MACH_LOONGSON64
2778 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2781 Enabled scanning of DMI to identify machine quirks. Say Y
2782 here unless you have verified that your setup is not
2783 affected by entries in the DMI blacklist. Required by PNP
2787 bool "Multi-Processing support"
2788 depends on SYS_SUPPORTS_SMP
2790 This enables support for systems with more than one CPU. If you have
2791 a system with only one CPU, say N. If you have a system with more
2792 than one CPU, say Y.
2794 If you say N here, the kernel will run on uni- and multiprocessor
2795 machines, but will use only one CPU of a multiprocessor machine. If
2796 you say Y here, the kernel will run on many, but not all,
2797 uniprocessor machines. On a uniprocessor machine, the kernel
2798 will run faster if you say N here.
2800 People using multiprocessor machines who say Y here should also say
2801 Y to "Enhanced Real Time Clock Support", below.
2803 See also the SMP-HOWTO available at
2804 <http://www.tldp.org/docs.html#howto>.
2806 If you don't know what to do here, say N.
2809 bool "Support for hot-pluggable CPUs"
2810 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2812 Say Y here to allow turning CPUs off and on. CPUs can be
2813 controlled through /sys/devices/system/cpu.
2814 (Note: power management support will enable this option
2815 automatically on SMP systems. )
2816 Say N if you want to disable CPU hotplug.
2821 config SYS_SUPPORTS_MIPS_CMP
2824 config SYS_SUPPORTS_MIPS_CPS
2827 config SYS_SUPPORTS_SMP
2830 config NR_CPUS_DEFAULT_4
2833 config NR_CPUS_DEFAULT_8
2836 config NR_CPUS_DEFAULT_16
2839 config NR_CPUS_DEFAULT_32
2842 config NR_CPUS_DEFAULT_64
2846 int "Maximum number of CPUs (2-256)"
2849 default "4" if NR_CPUS_DEFAULT_4
2850 default "8" if NR_CPUS_DEFAULT_8
2851 default "16" if NR_CPUS_DEFAULT_16
2852 default "32" if NR_CPUS_DEFAULT_32
2853 default "64" if NR_CPUS_DEFAULT_64
2855 This allows you to specify the maximum number of CPUs which this
2856 kernel will support. The maximum supported value is 32 for 32-bit
2857 kernel and 64 for 64-bit kernels; the minimum value which makes
2858 sense is 1 for Qemu (useful only for kernel debugging purposes)
2859 and 2 for all others.
2861 This is purely to save memory - each supported CPU adds
2862 approximately eight kilobytes to the kernel image. For best
2863 performance should round up your number of processors to the next
2866 config MIPS_PERF_SHARED_TC_COUNTERS
2869 config MIPS_NR_CPU_NR_MAP_1024
2872 config MIPS_NR_CPU_NR_MAP
2875 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2876 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2879 # Timer Interrupt Frequency Configuration
2883 prompt "Timer frequency"
2886 Allows the configuration of the timer frequency.
2889 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2892 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2895 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2898 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2901 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2904 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2907 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2910 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2914 config SYS_SUPPORTS_24HZ
2917 config SYS_SUPPORTS_48HZ
2920 config SYS_SUPPORTS_100HZ
2923 config SYS_SUPPORTS_128HZ
2926 config SYS_SUPPORTS_250HZ
2929 config SYS_SUPPORTS_256HZ
2932 config SYS_SUPPORTS_1000HZ
2935 config SYS_SUPPORTS_1024HZ
2938 config SYS_SUPPORTS_ARBIT_HZ
2940 default y if !SYS_SUPPORTS_24HZ && \
2941 !SYS_SUPPORTS_48HZ && \
2942 !SYS_SUPPORTS_100HZ && \
2943 !SYS_SUPPORTS_128HZ && \
2944 !SYS_SUPPORTS_250HZ && \
2945 !SYS_SUPPORTS_256HZ && \
2946 !SYS_SUPPORTS_1000HZ && \
2947 !SYS_SUPPORTS_1024HZ
2953 default 100 if HZ_100
2954 default 128 if HZ_128
2955 default 250 if HZ_250
2956 default 256 if HZ_256
2957 default 1000 if HZ_1000
2958 default 1024 if HZ_1024
2961 def_bool HIGH_RES_TIMERS
2964 bool "Kexec system call"
2967 kexec is a system call that implements the ability to shutdown your
2968 current kernel, and to start another kernel. It is like a reboot
2969 but it is independent of the system firmware. And like a reboot
2970 you can start any kernel with it, not just Linux.
2972 The name comes from the similarity to the exec system call.
2974 It is an ongoing process to be certain the hardware in a machine
2975 is properly shutdown, so do not be surprised if this code does not
2976 initially work for you. As of this writing the exact hardware
2977 interface is strongly in flux, so no good recommendation can be
2981 bool "Kernel crash dumps"
2983 Generate crash dump after being started by kexec.
2984 This should be normally only set in special crash dump kernels
2985 which are loaded in the main kernel with kexec-tools into
2986 a specially reserved region and then later executed after
2987 a crash by kdump/kexec. The crash dump kernel must be compiled
2988 to a memory address not used by the main kernel or firmware using
2991 config PHYSICAL_START
2992 hex "Physical address where the kernel is loaded"
2993 default "0xffffffff84000000"
2994 depends on CRASH_DUMP
2996 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2997 If you plan to use kernel for capturing the crash dump change
2998 this value to start of the reserved region (the "X" value as
2999 specified in the "crashkernel=YM@XM" command line boot parameter
3000 passed to the panic-ed kernel).
3003 bool "Enable seccomp to safely compute untrusted bytecode"
3007 This kernel feature is useful for number crunching applications
3008 that may need to compute untrusted bytecode during their
3009 execution. By using pipes or other transports made available to
3010 the process as file descriptors supporting the read/write
3011 syscalls, it's possible to isolate those applications in
3012 their own address space using seccomp. Once seccomp is
3013 enabled via /proc/<pid>/seccomp, it cannot be disabled
3014 and the task is only allowed to execute a few safe syscalls
3015 defined by each seccomp mode.
3017 If unsure, say Y. Only embedded should say N here.
3019 config MIPS_O32_FP64_SUPPORT
3020 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3021 depends on 32BIT || MIPS32_O32
3023 When this is enabled, the kernel will support use of 64-bit floating
3024 point registers with binaries using the O32 ABI along with the
3025 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3026 32-bit MIPS systems this support is at the cost of increasing the
3027 size and complexity of the compiled FPU emulator. Thus if you are
3028 running a MIPS32 system and know that none of your userland binaries
3029 will require 64-bit floating point, you may wish to reduce the size
3030 of your kernel & potentially improve FP emulation performance by
3033 Although binutils currently supports use of this flag the details
3034 concerning its effect upon the O32 ABI in userland are still being
3035 worked on. In order to avoid userland becoming dependant upon current
3036 behaviour before the details have been finalised, this option should
3037 be considered experimental and only enabled by those working upon
3045 select OF_EARLY_FLATTREE
3055 prompt "Kernel appended dtb support" if USE_OF
3056 default MIPS_NO_APPENDED_DTB
3058 config MIPS_NO_APPENDED_DTB
3061 Do not enable appended dtb support.
3063 config MIPS_ELF_APPENDED_DTB
3066 With this option, the boot code will look for a device tree binary
3067 DTB) included in the vmlinux ELF section .appended_dtb. By default
3068 it is empty and the DTB can be appended using binutils command
3071 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3073 This is meant as a backward compatiblity convenience for those
3074 systems with a bootloader that can't be upgraded to accommodate
3075 the documented boot protocol using a device tree.
3077 config MIPS_RAW_APPENDED_DTB
3078 bool "vmlinux.bin or vmlinuz.bin"
3080 With this option, the boot code will look for a device tree binary
3081 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3082 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3084 This is meant as a backward compatibility convenience for those
3085 systems with a bootloader that can't be upgraded to accommodate
3086 the documented boot protocol using a device tree.
3088 Beware that there is very little in terms of protection against
3089 this option being confused by leftover garbage in memory that might
3090 look like a DTB header after a reboot if no actual DTB is appended
3091 to vmlinux.bin. Do not leave this option active in a production kernel
3092 if you don't intend to always append a DTB.
3096 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3097 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3098 !MACH_LOONGSON64 && !MIPS_MALTA && \
3100 default MIPS_CMDLINE_FROM_BOOTLOADER
3102 config MIPS_CMDLINE_FROM_DTB
3104 bool "Dtb kernel arguments if available"
3106 config MIPS_CMDLINE_DTB_EXTEND
3108 bool "Extend dtb kernel arguments with bootloader arguments"
3110 config MIPS_CMDLINE_FROM_BOOTLOADER
3111 bool "Bootloader kernel arguments if available"
3113 config MIPS_CMDLINE_BUILTIN_EXTEND
3114 depends on CMDLINE_BOOL
3115 bool "Extend builtin kernel arguments with bootloader arguments"
3120 config LOCKDEP_SUPPORT
3124 config STACKTRACE_SUPPORT
3128 config PGTABLE_LEVELS
3130 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3131 default 3 if 64BIT && !PAGE_SIZE_64KB
3134 config MIPS_AUTO_PFN_OFFSET
3137 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3139 config PCI_DRIVERS_GENERIC
3140 select PCI_DOMAINS_GENERIC if PCI
3143 config PCI_DRIVERS_LEGACY
3144 def_bool !PCI_DRIVERS_GENERIC
3145 select NO_GENERIC_PCI_IOPORT_MAP
3146 select PCI_DOMAINS if PCI
3149 # ISA support is now enabled via select. Too many systems still have the one
3150 # or other ISA chip on the board that users don't know about so don't expect
3151 # users to choose the right thing ...
3157 bool "TURBOchannel support"
3158 depends on MACH_DECSTATION
3160 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3161 processors. TURBOchannel programming specifications are available
3163 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3165 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3166 Linux driver support status is documented at:
3167 <http://www.linux-mips.org/wiki/DECstation>
3173 config ARCH_MMAP_RND_BITS_MIN
3177 config ARCH_MMAP_RND_BITS_MAX
3181 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3184 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3191 select MIPS_EXTERNAL_TIMER
3204 config MIPS32_COMPAT
3210 config SYSVIPC_COMPAT
3214 bool "Kernel support for o32 binaries"
3216 select ARCH_WANT_OLD_COMPAT_IPC
3218 select MIPS32_COMPAT
3219 select SYSVIPC_COMPAT if SYSVIPC
3221 Select this option if you want to run o32 binaries. These are pure
3222 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3223 existing binaries are in this format.
3228 bool "Kernel support for n32 binaries"
3230 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3232 select MIPS32_COMPAT
3233 select SYSVIPC_COMPAT if SYSVIPC
3235 Select this option if you want to run n32 binaries. These are
3236 64-bit binaries using 32-bit quantities for addressing and certain
3237 data that would normally be 64-bit. They are used in special
3244 default y if MIPS32_O32 || MIPS32_N32
3247 menu "Power management options"
3249 config ARCH_HIBERNATION_POSSIBLE
3251 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3253 config ARCH_SUSPEND_POSSIBLE
3255 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3257 source "kernel/power/Kconfig"
3261 config MIPS_EXTERNAL_TIMER
3264 menu "CPU Power Management"
3266 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3267 source "drivers/cpufreq/Kconfig"
3270 source "drivers/cpuidle/Kconfig"
3274 source "drivers/firmware/Kconfig"
3276 source "arch/mips/kvm/Kconfig"