4 select ARCH_BINFMT_ELF_STATE
5 select ARCH_CLOCKSOURCE_DATA
6 select ARCH_DISCARD_MEMBLOCK
7 select ARCH_HAS_ELF_RANDOMIZE
8 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
9 select ARCH_MIGHT_HAVE_PC_PARPORT
10 select ARCH_MIGHT_HAVE_PC_SERIO
11 select ARCH_SUPPORTS_UPROBES
12 select ARCH_USE_BUILTIN_BSWAP
13 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
14 select ARCH_USE_QUEUED_RWLOCKS
15 select ARCH_USE_QUEUED_SPINLOCKS
16 select ARCH_WANT_IPC_PARSE_VERSION
17 select BUILDTIME_EXTABLE_SORT
18 select CLONE_BACKWARDS
19 select CPU_PM if CPU_IDLE
20 select GENERIC_ATOMIC64 if !64BIT
21 select GENERIC_CLOCKEVENTS
22 select GENERIC_CMOS_UPDATE
23 select GENERIC_CPU_AUTOPROBE
24 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
26 select GENERIC_PCI_IOMAP
27 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
28 select GENERIC_SMP_IDLE_THREAD
29 select GENERIC_TIME_VSYSCALL
30 select HANDLE_DOMAIN_IRQ
31 select HAVE_ARCH_JUMP_LABEL
33 select HAVE_ARCH_MMAP_RND_BITS if MMU
34 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
35 select HAVE_ARCH_SECCOMP_FILTER
36 select HAVE_ARCH_TRACEHOOK
37 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
38 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
39 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
40 select HAVE_CC_STACKPROTECTOR
41 select HAVE_CONTEXT_TRACKING
42 select HAVE_COPY_THREAD_TLS
43 select HAVE_C_RECORDMCOUNT
44 select HAVE_DEBUG_KMEMLEAK
45 select HAVE_DEBUG_STACKOVERFLOW
46 select HAVE_DMA_API_DEBUG
47 select HAVE_DMA_CONTIGUOUS
48 select HAVE_DYNAMIC_FTRACE
49 select HAVE_EXIT_THREAD
50 select HAVE_FTRACE_MCOUNT_RECORD
51 select HAVE_FUNCTION_GRAPH_TRACER
52 select HAVE_FUNCTION_TRACER
53 select HAVE_GENERIC_DMA_COHERENT
55 select HAVE_IRQ_EXIT_ON_IRQ_STACK
56 select HAVE_IRQ_TIME_ACCOUNTING
58 select HAVE_KRETPROBES
60 select HAVE_MEMBLOCK_NODE_MAP
61 select HAVE_MOD_ARCH_SPECIFIC
64 select HAVE_PERF_EVENTS
65 select HAVE_REGS_AND_STACK_ACCESS_API
66 select HAVE_SYSCALL_TRACEPOINTS
67 select HAVE_VIRT_CPU_ACCOUNTING_GEN
68 select IRQ_FORCED_THREADING
69 select MODULES_USE_ELF_RELA if MODULES && 64BIT
70 select MODULES_USE_ELF_REL if MODULES
71 select PERF_USE_VMALLOC
72 select RTC_LIB if !MACH_LOONGSON64
73 select SYSCTL_EXCEPTION_TRACE
76 menu "Machine selection"
83 bool "Generic board-agnostic MIPS kernel"
87 select CLKSRC_MIPS_GIC
89 select CPU_MIPSR2_IRQ_VI
90 select CPU_MIPSR2_IRQ_EI
92 select DMA_PERDEV_COHERENT
96 select MIPS_CPU_SCACHE
98 select MIPS_L1_CACHE_SHIFT_7
100 select PCI_DRIVERS_GENERIC
104 select SYS_HAS_CPU_MIPS32_R1
105 select SYS_HAS_CPU_MIPS32_R2
106 select SYS_HAS_CPU_MIPS32_R6
107 select SYS_HAS_CPU_MIPS64_R1
108 select SYS_HAS_CPU_MIPS64_R2
109 select SYS_HAS_CPU_MIPS64_R6
110 select SYS_SUPPORTS_32BIT_KERNEL
111 select SYS_SUPPORTS_64BIT_KERNEL
112 select SYS_SUPPORTS_BIG_ENDIAN
113 select SYS_SUPPORTS_HIGHMEM
114 select SYS_SUPPORTS_LITTLE_ENDIAN
115 select SYS_SUPPORTS_MICROMIPS
116 select SYS_SUPPORTS_MIPS_CPS
117 select SYS_SUPPORTS_MIPS16
118 select SYS_SUPPORTS_MULTITHREADING
119 select SYS_SUPPORTS_RELOCATABLE
120 select SYS_SUPPORTS_SMARTMIPS
121 select USB_EHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
122 select USB_EHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
123 select USB_OHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
124 select USB_OHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
125 select USB_UHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
126 select USB_UHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
129 Select this to build a kernel which aims to support multiple boards,
130 generally using a flattened device tree passed from the bootloader
131 using the boot protocol defined in the UHI (Unified Hosting
132 Interface) specification.
135 bool "Alchemy processor based machines"
136 select ARCH_PHYS_ADDR_T_64BIT
140 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
141 select SYS_HAS_CPU_MIPS32_R1
142 select SYS_SUPPORTS_32BIT_KERNEL
143 select SYS_SUPPORTS_APM_EMULATION
145 select SYS_SUPPORTS_ZBOOT
149 bool "Texas Instruments AR7"
151 select DMA_NONCOHERENT
155 select NO_EXCEPT_FILL
157 select SYS_HAS_CPU_MIPS32_R1
158 select SYS_HAS_EARLY_PRINTK
159 select SYS_SUPPORTS_32BIT_KERNEL
160 select SYS_SUPPORTS_LITTLE_ENDIAN
161 select SYS_SUPPORTS_MIPS16
162 select SYS_SUPPORTS_ZBOOT_UART16550
167 Support for the Texas Instruments AR7 System-on-a-Chip
168 family: TNETD7100, 7200 and 7300.
171 bool "Atheros AR231x/AR531x SoC support"
174 select DMA_NONCOHERENT
177 select SYS_HAS_CPU_MIPS32_R1
178 select SYS_SUPPORTS_BIG_ENDIAN
179 select SYS_SUPPORTS_32BIT_KERNEL
180 select SYS_HAS_EARLY_PRINTK
182 Support for Atheros AR231x and Atheros AR531x based boards
185 bool "Atheros AR71XX/AR724X/AR913X based boards"
186 select ARCH_HAS_RESET_CONTROLLER
190 select DMA_NONCOHERENT
197 select SYS_HAS_CPU_MIPS32_R2
198 select SYS_HAS_EARLY_PRINTK
199 select SYS_SUPPORTS_32BIT_KERNEL
200 select SYS_SUPPORTS_BIG_ENDIAN
201 select SYS_SUPPORTS_MIPS16
202 select SYS_SUPPORTS_ZBOOT_UART_PROM
205 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
208 bool "Broadcom Generic BMIPS kernel"
210 select NO_EXCEPT_FILL
216 select BCM6345_L1_IRQ
217 select BCM7038_L1_IRQ
218 select BCM7120_L2_IRQ
219 select BRCMSTB_L2_IRQ
221 select DMA_NONCOHERENT
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_LITTLE_ENDIAN
224 select SYS_SUPPORTS_BIG_ENDIAN
225 select SYS_SUPPORTS_HIGHMEM
226 select SYS_HAS_CPU_BMIPS32_3300
227 select SYS_HAS_CPU_BMIPS4350
228 select SYS_HAS_CPU_BMIPS4380
229 select SYS_HAS_CPU_BMIPS5000
231 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
232 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
233 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
234 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
235 select HARDIRQS_SW_RESEND
237 Build a generic DT-based kernel image that boots on select
238 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
239 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
240 must be set appropriately for your board.
243 bool "Broadcom BCM47XX based boards"
247 select DMA_NONCOHERENT
250 select SYS_HAS_CPU_MIPS32_R1
251 select NO_EXCEPT_FILL
252 select SYS_SUPPORTS_32BIT_KERNEL
253 select SYS_SUPPORTS_LITTLE_ENDIAN
254 select SYS_SUPPORTS_MIPS16
255 select SYS_HAS_EARLY_PRINTK
256 select USE_GENERIC_EARLY_PRINTK_8250
258 select LEDS_GPIO_REGISTER
262 Support for BCM47XX based boards
265 bool "Broadcom BCM63XX based boards"
270 select DMA_NONCOHERENT
272 select SYS_SUPPORTS_32BIT_KERNEL
273 select SYS_SUPPORTS_BIG_ENDIAN
274 select SYS_HAS_EARLY_PRINTK
278 select MIPS_L1_CACHE_SHIFT_4
281 Support for BCM63XX based boards
288 select DMA_NONCOHERENT
294 select PCI_GT64XXX_PCI0
296 select SYS_HAS_CPU_NEVADA
297 select SYS_HAS_EARLY_PRINTK
298 select SYS_SUPPORTS_32BIT_KERNEL
299 select SYS_SUPPORTS_64BIT_KERNEL
300 select SYS_SUPPORTS_LITTLE_ENDIAN
301 select USE_GENERIC_EARLY_PRINTK_8250
303 config MACH_DECSTATION
307 select CEVT_R4K if CPU_R4X00
309 select CSRC_R4K if CPU_R4X00
310 select CPU_DADDI_WORKAROUNDS if 64BIT
311 select CPU_R4000_WORKAROUNDS if 64BIT
312 select CPU_R4400_WORKAROUNDS if 64BIT
313 select DMA_NONCOHERENT
316 select SYS_HAS_CPU_R3000
317 select SYS_HAS_CPU_R4X00
318 select SYS_SUPPORTS_32BIT_KERNEL
319 select SYS_SUPPORTS_64BIT_KERNEL
320 select SYS_SUPPORTS_LITTLE_ENDIAN
321 select SYS_SUPPORTS_128HZ
322 select SYS_SUPPORTS_256HZ
323 select SYS_SUPPORTS_1024HZ
324 select MIPS_L1_CACHE_SHIFT_4
326 This enables support for DEC's MIPS based workstations. For details
327 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
328 DECstation porting pages on <http://decstation.unix-ag.org/>.
330 If you have one of the following DECstation Models you definitely
331 want to choose R4xx0 for the CPU Type:
338 otherwise choose R3000.
341 bool "Jazz family of machines"
344 select ARCH_MAY_HAVE_PC_FDC
347 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
348 select GENERIC_ISA_DMA
349 select HAVE_PCSPKR_PLATFORM
354 select SYS_HAS_CPU_R4X00
355 select SYS_SUPPORTS_32BIT_KERNEL
356 select SYS_SUPPORTS_64BIT_KERNEL
357 select SYS_SUPPORTS_100HZ
359 This a family of machines based on the MIPS R4030 chipset which was
360 used by several vendors to build RISC/os and Windows NT workstations.
361 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
362 Olivetti M700-10 workstations.
365 bool "Ingenic SoC based machines"
366 select SYS_SUPPORTS_32BIT_KERNEL
367 select SYS_SUPPORTS_LITTLE_ENDIAN
368 select SYS_SUPPORTS_ZBOOT_UART16550
369 select DMA_NONCOHERENT
374 select GENERIC_IRQ_CHIP
380 bool "Lantiq based platforms"
381 select DMA_NONCOHERENT
385 select SYS_HAS_CPU_MIPS32_R1
386 select SYS_HAS_CPU_MIPS32_R2
387 select SYS_SUPPORTS_BIG_ENDIAN
388 select SYS_SUPPORTS_32BIT_KERNEL
389 select SYS_SUPPORTS_MIPS16
390 select SYS_SUPPORTS_MULTITHREADING
391 select SYS_HAS_EARLY_PRINTK
398 select PINCTRL_LANTIQ
399 select ARCH_HAS_RESET_CONTROLLER
400 select RESET_CONTROLLER
403 bool "LASAT Networks platforms"
407 select DMA_NONCOHERENT
408 select SYS_HAS_EARLY_PRINTK
411 select PCI_GT64XXX_PCI0
413 select R5000_CPU_SCACHE
414 select SYS_HAS_CPU_R5000
415 select SYS_SUPPORTS_32BIT_KERNEL
416 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
417 select SYS_SUPPORTS_LITTLE_ENDIAN
419 config MACH_LOONGSON32
420 bool "Loongson-1 family of machines"
421 select SYS_SUPPORTS_ZBOOT
423 This enables support for the Loongson-1 family of machines.
425 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
426 the Institute of Computing Technology (ICT), Chinese Academy of
429 config MACH_LOONGSON64
430 bool "Loongson-2/3 family of machines"
431 select SYS_SUPPORTS_ZBOOT
433 This enables the support of Loongson-2/3 family of machines.
435 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
436 family of multi-core CPUs. They are both 64-bit general-purpose
437 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
438 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
439 in the People's Republic of China. The chief architect is Professor
442 config MACH_PISTACHIO
443 bool "IMG Pistachio SoC based boards"
447 select CLKSRC_MIPS_GIC
450 select DMA_NONCOHERENT
455 select MIPS_CPU_SCACHE
459 select SYS_HAS_CPU_MIPS32_R2
460 select SYS_SUPPORTS_32BIT_KERNEL
461 select SYS_SUPPORTS_LITTLE_ENDIAN
462 select SYS_SUPPORTS_MIPS_CPS
463 select SYS_SUPPORTS_MULTITHREADING
464 select SYS_SUPPORTS_RELOCATABLE
465 select SYS_SUPPORTS_ZBOOT
466 select SYS_HAS_EARLY_PRINTK
467 select USE_GENERIC_EARLY_PRINTK_8250
470 This enables support for the IMG Pistachio SoC platform.
473 bool "MIPS Malta board"
474 select ARCH_MAY_HAVE_PC_FDC
480 select CLKSRC_MIPS_GIC
482 select DMA_MAYBE_COHERENT
483 select GENERIC_ISA_DMA
484 select HAVE_PCSPKR_PLATFORM
491 select MIPS_CPU_SCACHE
492 select MIPS_L1_CACHE_SHIFT_6
493 select PCI_GT64XXX_PCI0
497 select SYS_HAS_CPU_MIPS32_R1
498 select SYS_HAS_CPU_MIPS32_R2
499 select SYS_HAS_CPU_MIPS32_R3_5
500 select SYS_HAS_CPU_MIPS32_R5
501 select SYS_HAS_CPU_MIPS32_R6
502 select SYS_HAS_CPU_MIPS64_R1
503 select SYS_HAS_CPU_MIPS64_R2
504 select SYS_HAS_CPU_MIPS64_R6
505 select SYS_HAS_CPU_NEVADA
506 select SYS_HAS_CPU_RM7000
507 select SYS_SUPPORTS_32BIT_KERNEL
508 select SYS_SUPPORTS_64BIT_KERNEL
509 select SYS_SUPPORTS_BIG_ENDIAN
510 select SYS_SUPPORTS_HIGHMEM
511 select SYS_SUPPORTS_LITTLE_ENDIAN
512 select SYS_SUPPORTS_MICROMIPS
513 select SYS_SUPPORTS_MIPS_CMP
514 select SYS_SUPPORTS_MIPS_CPS
515 select SYS_SUPPORTS_MIPS16
516 select SYS_SUPPORTS_MULTITHREADING
517 select SYS_SUPPORTS_SMARTMIPS
518 select SYS_SUPPORTS_ZBOOT
519 select SYS_SUPPORTS_RELOCATABLE
522 select ZONE_DMA32 if 64BIT
526 This enables support for the MIPS Technologies Malta evaluation
530 bool "Microchip PIC32 Family"
532 This enables support for the Microchip PIC32 family of platforms.
534 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
538 bool "NEC EMMA2RH Mark-eins board"
542 This enables support for the NEC Electronics Mark-eins boards.
545 bool "NEC VR4100 series based machines"
548 select SYS_HAS_CPU_VR41XX
549 select SYS_SUPPORTS_MIPS16
553 bool "NXP STB220 board"
556 Support for NXP Semiconductors STB220 Development Board.
563 Support for NXP Semiconductors STB225 Development Board.
566 bool "PMC-Sierra MSP chipsets"
569 select DMA_NONCOHERENT
571 select NO_EXCEPT_FILL
573 select SYS_HAS_CPU_MIPS32_R1
574 select SYS_HAS_CPU_MIPS32_R2
575 select SYS_SUPPORTS_32BIT_KERNEL
576 select SYS_SUPPORTS_BIG_ENDIAN
577 select SYS_SUPPORTS_MIPS16
580 select SERIAL_8250_CONSOLE
581 select USB_EHCI_BIG_ENDIAN_MMIO
582 select USB_EHCI_BIG_ENDIAN_DESC
584 This adds support for the PMC-Sierra family of Multi-Service
585 Processor System-On-A-Chips. These parts include a number
586 of integrated peripherals, interfaces and DSPs in addition to
587 a variety of MIPS cores.
590 bool "Ralink based machines"
594 select DMA_NONCOHERENT
597 select SYS_HAS_CPU_MIPS32_R1
598 select SYS_HAS_CPU_MIPS32_R2
599 select SYS_SUPPORTS_32BIT_KERNEL
600 select SYS_SUPPORTS_LITTLE_ENDIAN
601 select SYS_SUPPORTS_MIPS16
602 select SYS_HAS_EARLY_PRINTK
604 select ARCH_HAS_RESET_CONTROLLER
605 select RESET_CONTROLLER
608 bool "SGI IP22 (Indy/Indigo2)"
614 select DEFAULT_SGI_PARTITION
615 select DMA_NONCOHERENT
619 select IP22_CPU_SCACHE
621 select GENERIC_ISA_DMA_SUPPORT_BROKEN
623 select SGI_HAS_INDYDOG
629 select SYS_HAS_CPU_R4X00
630 select SYS_HAS_CPU_R5000
632 # Disable EARLY_PRINTK for now since it leads to overwritten prom
633 # memory during early boot on some machines.
635 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
636 # for a more details discussion
638 # select SYS_HAS_EARLY_PRINTK
639 select SYS_SUPPORTS_32BIT_KERNEL
640 select SYS_SUPPORTS_64BIT_KERNEL
641 select SYS_SUPPORTS_BIG_ENDIAN
642 select MIPS_L1_CACHE_SHIFT_7
644 This are the SGI Indy, Challenge S and Indigo2, as well as certain
645 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
646 that runs on these, say Y here.
649 bool "SGI IP27 (Origin200/2000)"
653 select DEFAULT_SGI_PARTITION
655 select SYS_HAS_EARLY_PRINTK
657 select NR_CPUS_DEFAULT_64
658 select SYS_HAS_CPU_R10000
659 select SYS_SUPPORTS_64BIT_KERNEL
660 select SYS_SUPPORTS_BIG_ENDIAN
661 select SYS_SUPPORTS_NUMA
662 select SYS_SUPPORTS_SMP
663 select MIPS_L1_CACHE_SHIFT_7
665 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
666 workstations. To compile a Linux kernel that runs on these, say Y
670 bool "SGI IP28 (Indigo2 R10k)"
676 select DEFAULT_SGI_PARTITION
677 select DMA_NONCOHERENT
678 select GENERIC_ISA_DMA_SUPPORT_BROKEN
684 select SGI_HAS_INDYDOG
690 select SYS_HAS_CPU_R10000
692 # Disable EARLY_PRINTK for now since it leads to overwritten prom
693 # memory during early boot on some machines.
695 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
696 # for a more details discussion
698 # select SYS_HAS_EARLY_PRINTK
699 select SYS_SUPPORTS_64BIT_KERNEL
700 select SYS_SUPPORTS_BIG_ENDIAN
701 select MIPS_L1_CACHE_SHIFT_7
703 This is the SGI Indigo2 with R10000 processor. To compile a Linux
704 kernel that runs on these, say Y here.
713 select DMA_NONCOHERENT
716 select R5000_CPU_SCACHE
717 select RM7000_CPU_SCACHE
718 select SYS_HAS_CPU_R5000
719 select SYS_HAS_CPU_R10000 if BROKEN
720 select SYS_HAS_CPU_RM7000
721 select SYS_HAS_CPU_NEVADA
722 select SYS_SUPPORTS_64BIT_KERNEL
723 select SYS_SUPPORTS_BIG_ENDIAN
725 If you want this kernel to run on SGI O2 workstation, say Y here.
728 bool "Sibyte BCM91120C-CRhine"
731 select SIBYTE_BCM1120
733 select SYS_HAS_CPU_SB1
734 select SYS_SUPPORTS_BIG_ENDIAN
735 select SYS_SUPPORTS_LITTLE_ENDIAN
738 bool "Sibyte BCM91120x-Carmel"
741 select SIBYTE_BCM1120
743 select SYS_HAS_CPU_SB1
744 select SYS_SUPPORTS_BIG_ENDIAN
745 select SYS_SUPPORTS_LITTLE_ENDIAN
748 bool "Sibyte BCM91125C-CRhone"
751 select SIBYTE_BCM1125
753 select SYS_HAS_CPU_SB1
754 select SYS_SUPPORTS_BIG_ENDIAN
755 select SYS_SUPPORTS_HIGHMEM
756 select SYS_SUPPORTS_LITTLE_ENDIAN
759 bool "Sibyte BCM91125E-Rhone"
762 select SIBYTE_BCM1125H
764 select SYS_HAS_CPU_SB1
765 select SYS_SUPPORTS_BIG_ENDIAN
766 select SYS_SUPPORTS_LITTLE_ENDIAN
769 bool "Sibyte BCM91250A-SWARM"
772 select HAVE_PATA_PLATFORM
775 select SYS_HAS_CPU_SB1
776 select SYS_SUPPORTS_BIG_ENDIAN
777 select SYS_SUPPORTS_HIGHMEM
778 select SYS_SUPPORTS_LITTLE_ENDIAN
779 select ZONE_DMA32 if 64BIT
781 config SIBYTE_LITTLESUR
782 bool "Sibyte BCM91250C2-LittleSur"
785 select HAVE_PATA_PLATFORM
788 select SYS_HAS_CPU_SB1
789 select SYS_SUPPORTS_BIG_ENDIAN
790 select SYS_SUPPORTS_HIGHMEM
791 select SYS_SUPPORTS_LITTLE_ENDIAN
793 config SIBYTE_SENTOSA
794 bool "Sibyte BCM91250E-Sentosa"
799 select SYS_HAS_CPU_SB1
800 select SYS_SUPPORTS_BIG_ENDIAN
801 select SYS_SUPPORTS_LITTLE_ENDIAN
804 bool "Sibyte BCM91480B-BigSur"
807 select NR_CPUS_DEFAULT_4
808 select SIBYTE_BCM1x80
810 select SYS_HAS_CPU_SB1
811 select SYS_SUPPORTS_BIG_ENDIAN
812 select SYS_SUPPORTS_HIGHMEM
813 select SYS_SUPPORTS_LITTLE_ENDIAN
814 select ZONE_DMA32 if 64BIT
817 bool "SNI RM200/300/400"
818 select FW_ARC if CPU_LITTLE_ENDIAN
819 select FW_ARC32 if CPU_LITTLE_ENDIAN
820 select FW_SNIPROM if CPU_BIG_ENDIAN
821 select ARCH_MAY_HAVE_PC_FDC
825 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
826 select DMA_NONCOHERENT
827 select GENERIC_ISA_DMA
828 select HAVE_PCSPKR_PLATFORM
835 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
836 select SYS_HAS_CPU_R4X00
837 select SYS_HAS_CPU_R5000
838 select SYS_HAS_CPU_R10000
839 select R5000_CPU_SCACHE
840 select SYS_HAS_EARLY_PRINTK
841 select SYS_SUPPORTS_32BIT_KERNEL
842 select SYS_SUPPORTS_64BIT_KERNEL
843 select SYS_SUPPORTS_BIG_ENDIAN
844 select SYS_SUPPORTS_HIGHMEM
845 select SYS_SUPPORTS_LITTLE_ENDIAN
847 The SNI RM200/300/400 are MIPS-based machines manufactured by
848 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
849 Technology and now in turn merged with Fujitsu. Say Y here to
850 support this machine type.
853 bool "Toshiba TX39 series based machines"
856 bool "Toshiba TX49 series based machines"
858 config MIKROTIK_RB532
859 bool "Mikrotik RB532 boards"
862 select DMA_NONCOHERENT
865 select SYS_HAS_CPU_MIPS32_R1
866 select SYS_SUPPORTS_32BIT_KERNEL
867 select SYS_SUPPORTS_LITTLE_ENDIAN
871 select MIPS_L1_CACHE_SHIFT_4
873 Support the Mikrotik(tm) RouterBoard 532 series,
874 based on the IDT RC32434 SoC.
876 config CAVIUM_OCTEON_SOC
877 bool "Cavium Networks Octeon SoC based boards"
879 select ARCH_PHYS_ADDR_T_64BIT
881 select SYS_SUPPORTS_64BIT_KERNEL
882 select SYS_SUPPORTS_BIG_ENDIAN
884 select EDAC_ATOMIC_SCRUB
885 select SYS_SUPPORTS_LITTLE_ENDIAN
886 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
887 select SYS_HAS_EARLY_PRINTK
888 select SYS_HAS_CPU_CAVIUM_OCTEON
895 select ARCH_SPARSEMEM_ENABLE
896 select SYS_SUPPORTS_SMP
897 select NR_CPUS_DEFAULT_64
898 select MIPS_NR_CPU_NR_MAP_1024
900 select MTD_COMPLEX_MAPPINGS
901 select SYS_SUPPORTS_RELOCATABLE
903 This option supports all of the Octeon reference boards from Cavium
904 Networks. It builds a kernel that dynamically determines the Octeon
905 CPU type and supports all known board reference implementations.
906 Some of the supported boards are:
913 Say Y here for most Octeon reference boards.
916 bool "Netlogic XLR/XLS based systems"
919 select SYS_HAS_CPU_XLR
920 select SYS_SUPPORTS_SMP
923 select SYS_SUPPORTS_32BIT_KERNEL
924 select SYS_SUPPORTS_64BIT_KERNEL
925 select ARCH_PHYS_ADDR_T_64BIT
926 select SYS_SUPPORTS_BIG_ENDIAN
927 select SYS_SUPPORTS_HIGHMEM
929 select NR_CPUS_DEFAULT_32
933 select ZONE_DMA32 if 64BIT
935 select SYS_HAS_EARLY_PRINTK
936 select SYS_SUPPORTS_ZBOOT
937 select SYS_SUPPORTS_ZBOOT_UART16550
939 Support for systems based on Netlogic XLR and XLS processors.
940 Say Y here if you have a XLR or XLS based board.
943 bool "Netlogic XLP based systems"
946 select SYS_HAS_CPU_XLP
947 select SYS_SUPPORTS_SMP
949 select SYS_SUPPORTS_32BIT_KERNEL
950 select SYS_SUPPORTS_64BIT_KERNEL
951 select ARCH_PHYS_ADDR_T_64BIT
953 select SYS_SUPPORTS_BIG_ENDIAN
954 select SYS_SUPPORTS_LITTLE_ENDIAN
955 select SYS_SUPPORTS_HIGHMEM
957 select NR_CPUS_DEFAULT_32
961 select ZONE_DMA32 if 64BIT
963 select SYS_HAS_EARLY_PRINTK
965 select SYS_SUPPORTS_ZBOOT
966 select SYS_SUPPORTS_ZBOOT_UART16550
968 This board is based on Netlogic XLP Processor.
969 Say Y here if you have a XLP based board.
972 bool "Para-Virtualized guest system"
976 select SYS_SUPPORTS_64BIT_KERNEL
977 select SYS_SUPPORTS_32BIT_KERNEL
978 select SYS_SUPPORTS_BIG_ENDIAN
979 select SYS_SUPPORTS_SMP
980 select NR_CPUS_DEFAULT_4
981 select SYS_HAS_EARLY_PRINTK
982 select SYS_HAS_CPU_MIPS32_R2
983 select SYS_HAS_CPU_MIPS64_R2
984 select SYS_HAS_CPU_CAVIUM_OCTEON
988 This option supports guest running under ????
992 source "arch/mips/alchemy/Kconfig"
993 source "arch/mips/ath25/Kconfig"
994 source "arch/mips/ath79/Kconfig"
995 source "arch/mips/bcm47xx/Kconfig"
996 source "arch/mips/bcm63xx/Kconfig"
997 source "arch/mips/bmips/Kconfig"
998 source "arch/mips/generic/Kconfig"
999 source "arch/mips/jazz/Kconfig"
1000 source "arch/mips/jz4740/Kconfig"
1001 source "arch/mips/lantiq/Kconfig"
1002 source "arch/mips/lasat/Kconfig"
1003 source "arch/mips/pic32/Kconfig"
1004 source "arch/mips/pistachio/Kconfig"
1005 source "arch/mips/pmcs-msp71xx/Kconfig"
1006 source "arch/mips/ralink/Kconfig"
1007 source "arch/mips/sgi-ip27/Kconfig"
1008 source "arch/mips/sibyte/Kconfig"
1009 source "arch/mips/txx9/Kconfig"
1010 source "arch/mips/vr41xx/Kconfig"
1011 source "arch/mips/cavium-octeon/Kconfig"
1012 source "arch/mips/loongson32/Kconfig"
1013 source "arch/mips/loongson64/Kconfig"
1014 source "arch/mips/netlogic/Kconfig"
1015 source "arch/mips/paravirt/Kconfig"
1019 config RWSEM_GENERIC_SPINLOCK
1023 config RWSEM_XCHGADD_ALGORITHM
1026 config GENERIC_HWEIGHT
1030 config GENERIC_CALIBRATE_DELAY
1034 config SCHED_OMIT_FRAME_POINTER
1039 # Select some configuration options automatically based on user selections.
1044 config ARCH_MAY_HAVE_PC_FDC
1080 config MIPS_CLOCK_VSYSCALL
1081 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1090 config ARCH_DMA_ADDR_T_64BIT
1091 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1093 config ARCH_SUPPORTS_UPROBES
1096 config DMA_MAYBE_COHERENT
1097 select DMA_NONCOHERENT
1100 config DMA_PERDEV_COHERENT
1102 select DMA_MAYBE_COHERENT
1107 config DMA_NONCOHERENT
1109 select NEED_DMA_MAP_STATE
1111 config NEED_DMA_MAP_STATE
1114 config SYS_HAS_EARLY_PRINTK
1117 config SYS_SUPPORTS_HOTPLUG_CPU
1120 config MIPS_BONITO64
1135 config NO_IOPORT_MAP
1141 config GENERIC_ISA_DMA
1143 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1146 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1148 select GENERIC_ISA_DMA
1153 config HOLES_IN_ZONE
1156 config SYS_SUPPORTS_RELOCATABLE
1159 Selected if the platform supports relocating the kernel.
1160 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1161 to allow access to command line and entropy sources.
1163 config MIPS_CBPF_JIT
1165 depends on BPF_JIT && HAVE_CBPF_JIT
1167 config MIPS_EBPF_JIT
1169 depends on BPF_JIT && HAVE_EBPF_JIT
1173 # Endianness selection. Sufficiently obscure so many users don't know what to
1174 # answer,so we try hard to limit the available choices. Also the use of a
1175 # choice statement should be more obvious to the user.
1178 prompt "Endianness selection"
1180 Some MIPS machines can be configured for either little or big endian
1181 byte order. These modes require different kernels and a different
1182 Linux distribution. In general there is one preferred byteorder for a
1183 particular system but some systems are just as commonly used in the
1184 one or the other endianness.
1186 config CPU_BIG_ENDIAN
1188 depends on SYS_SUPPORTS_BIG_ENDIAN
1190 config CPU_LITTLE_ENDIAN
1191 bool "Little endian"
1192 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1199 config SYS_SUPPORTS_APM_EMULATION
1202 config SYS_SUPPORTS_BIG_ENDIAN
1205 config SYS_SUPPORTS_LITTLE_ENDIAN
1208 config SYS_SUPPORTS_HUGETLBFS
1210 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1213 config MIPS_HUGE_TLB_SUPPORT
1214 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1231 config PCI_GT64XXX_PCI0
1234 config NO_EXCEPT_FILL
1241 select DMA_NONCOHERENT
1243 select SWAP_IO_SPACE
1244 select SYS_HAS_CPU_R5500
1245 select SYS_SUPPORTS_32BIT_KERNEL
1246 select SYS_SUPPORTS_64BIT_KERNEL
1247 select SYS_SUPPORTS_BIG_ENDIAN
1254 select DMA_NONCOHERENT
1255 select SYS_HAS_CPU_MIPS32_R2
1256 select SYS_SUPPORTS_32BIT_KERNEL
1257 select SYS_SUPPORTS_LITTLE_ENDIAN
1258 select SYS_SUPPORTS_BIG_ENDIAN
1259 select SYS_SUPPORTS_MIPS16
1260 select CPU_MIPSR2_IRQ_VI
1269 config SWAP_IO_SPACE
1272 config SGI_HAS_INDYDOG
1284 config SGI_HAS_ZILOG
1287 config SGI_HAS_I8042
1290 config DEFAULT_SGI_PARTITION
1302 config MIPS_L1_CACHE_SHIFT_4
1305 config MIPS_L1_CACHE_SHIFT_5
1308 config MIPS_L1_CACHE_SHIFT_6
1311 config MIPS_L1_CACHE_SHIFT_7
1314 config MIPS_L1_CACHE_SHIFT
1316 default "7" if MIPS_L1_CACHE_SHIFT_7
1317 default "6" if MIPS_L1_CACHE_SHIFT_6
1318 default "5" if MIPS_L1_CACHE_SHIFT_5
1319 default "4" if MIPS_L1_CACHE_SHIFT_4
1322 config HAVE_STD_PC_SERIAL_PORT
1326 bool "ARC console support"
1327 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1331 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1336 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1345 menu "CPU selection"
1351 config CPU_LOONGSON3
1352 bool "Loongson 3 CPU"
1353 depends on SYS_HAS_CPU_LOONGSON3
1354 select CPU_SUPPORTS_64BIT_KERNEL
1355 select CPU_SUPPORTS_HIGHMEM
1356 select CPU_SUPPORTS_HUGEPAGES
1357 select WEAK_ORDERING
1358 select WEAK_REORDERING_BEYOND_LLSC
1359 select MIPS_PGD_C0_CONTEXT
1360 select MIPS_L1_CACHE_SHIFT_6
1363 The Loongson 3 processor implements the MIPS64R2 instruction
1364 set with many extensions.
1366 config LOONGSON3_ENHANCEMENT
1367 bool "New Loongson 3 CPU Enhancements"
1370 select CPU_HAS_PREFETCH
1371 depends on CPU_LOONGSON3
1373 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1374 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1375 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1376 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1377 Fast TLB refill support, etc.
1379 This option enable those enhancements which are not probed at run
1380 time. If you want a generic kernel to run on all Loongson 3 machines,
1381 please say 'N' here. If you want a high-performance kernel to run on
1382 new Loongson 3 machines only, please say 'Y' here.
1384 config CPU_LOONGSON2E
1386 depends on SYS_HAS_CPU_LOONGSON2E
1387 select CPU_LOONGSON2
1389 The Loongson 2E processor implements the MIPS III instruction set
1390 with many extensions.
1392 It has an internal FPGA northbridge, which is compatible to
1395 config CPU_LOONGSON2F
1397 depends on SYS_HAS_CPU_LOONGSON2F
1398 select CPU_LOONGSON2
1401 The Loongson 2F processor implements the MIPS III instruction set
1402 with many extensions.
1404 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1405 have a similar programming interface with FPGA northbridge used in
1408 config CPU_LOONGSON1B
1410 depends on SYS_HAS_CPU_LOONGSON1B
1411 select CPU_LOONGSON1
1412 select LEDS_GPIO_REGISTER
1414 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1415 release 2 instruction set.
1417 config CPU_LOONGSON1C
1419 depends on SYS_HAS_CPU_LOONGSON1C
1420 select CPU_LOONGSON1
1421 select LEDS_GPIO_REGISTER
1423 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1424 release 2 instruction set.
1426 config CPU_MIPS32_R1
1427 bool "MIPS32 Release 1"
1428 depends on SYS_HAS_CPU_MIPS32_R1
1429 select CPU_HAS_PREFETCH
1430 select CPU_SUPPORTS_32BIT_KERNEL
1431 select CPU_SUPPORTS_HIGHMEM
1433 Choose this option to build a kernel for release 1 or later of the
1434 MIPS32 architecture. Most modern embedded systems with a 32-bit
1435 MIPS processor are based on a MIPS32 processor. If you know the
1436 specific type of processor in your system, choose those that one
1437 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1438 Release 2 of the MIPS32 architecture is available since several
1439 years so chances are you even have a MIPS32 Release 2 processor
1440 in which case you should choose CPU_MIPS32_R2 instead for better
1443 config CPU_MIPS32_R2
1444 bool "MIPS32 Release 2"
1445 depends on SYS_HAS_CPU_MIPS32_R2
1446 select CPU_HAS_PREFETCH
1447 select CPU_SUPPORTS_32BIT_KERNEL
1448 select CPU_SUPPORTS_HIGHMEM
1449 select CPU_SUPPORTS_MSA
1452 Choose this option to build a kernel for release 2 or later of the
1453 MIPS32 architecture. Most modern embedded systems with a 32-bit
1454 MIPS processor are based on a MIPS32 processor. If you know the
1455 specific type of processor in your system, choose those that one
1456 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1458 config CPU_MIPS32_R6
1459 bool "MIPS32 Release 6"
1460 depends on SYS_HAS_CPU_MIPS32_R6
1461 select CPU_HAS_PREFETCH
1462 select CPU_SUPPORTS_32BIT_KERNEL
1463 select CPU_SUPPORTS_HIGHMEM
1464 select CPU_SUPPORTS_MSA
1467 select MIPS_O32_FP64_SUPPORT
1469 Choose this option to build a kernel for release 6 or later of the
1470 MIPS32 architecture. New MIPS processors, starting with the Warrior
1471 family, are based on a MIPS32r6 processor. If you own an older
1472 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1474 config CPU_MIPS64_R1
1475 bool "MIPS64 Release 1"
1476 depends on SYS_HAS_CPU_MIPS64_R1
1477 select CPU_HAS_PREFETCH
1478 select CPU_SUPPORTS_32BIT_KERNEL
1479 select CPU_SUPPORTS_64BIT_KERNEL
1480 select CPU_SUPPORTS_HIGHMEM
1481 select CPU_SUPPORTS_HUGEPAGES
1483 Choose this option to build a kernel for release 1 or later of the
1484 MIPS64 architecture. Many modern embedded systems with a 64-bit
1485 MIPS processor are based on a MIPS64 processor. If you know the
1486 specific type of processor in your system, choose those that one
1487 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1488 Release 2 of the MIPS64 architecture is available since several
1489 years so chances are you even have a MIPS64 Release 2 processor
1490 in which case you should choose CPU_MIPS64_R2 instead for better
1493 config CPU_MIPS64_R2
1494 bool "MIPS64 Release 2"
1495 depends on SYS_HAS_CPU_MIPS64_R2
1496 select CPU_HAS_PREFETCH
1497 select CPU_SUPPORTS_32BIT_KERNEL
1498 select CPU_SUPPORTS_64BIT_KERNEL
1499 select CPU_SUPPORTS_HIGHMEM
1500 select CPU_SUPPORTS_HUGEPAGES
1501 select CPU_SUPPORTS_MSA
1504 Choose this option to build a kernel for release 2 or later of the
1505 MIPS64 architecture. Many modern embedded systems with a 64-bit
1506 MIPS processor are based on a MIPS64 processor. If you know the
1507 specific type of processor in your system, choose those that one
1508 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1510 config CPU_MIPS64_R6
1511 bool "MIPS64 Release 6"
1512 depends on SYS_HAS_CPU_MIPS64_R6
1513 select CPU_HAS_PREFETCH
1514 select CPU_SUPPORTS_32BIT_KERNEL
1515 select CPU_SUPPORTS_64BIT_KERNEL
1516 select CPU_SUPPORTS_HIGHMEM
1517 select CPU_SUPPORTS_MSA
1519 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1522 Choose this option to build a kernel for release 6 or later of the
1523 MIPS64 architecture. New MIPS processors, starting with the Warrior
1524 family, are based on a MIPS64r6 processor. If you own an older
1525 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1529 depends on SYS_HAS_CPU_R3000
1531 select CPU_SUPPORTS_32BIT_KERNEL
1532 select CPU_SUPPORTS_HIGHMEM
1534 Please make sure to pick the right CPU type. Linux/MIPS is not
1535 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1536 *not* work on R4000 machines and vice versa. However, since most
1537 of the supported machines have an R4000 (or similar) CPU, R4x00
1538 might be a safe bet. If the resulting kernel does not work,
1539 try to recompile with R3000.
1543 depends on SYS_HAS_CPU_TX39XX
1544 select CPU_SUPPORTS_32BIT_KERNEL
1548 depends on SYS_HAS_CPU_VR41XX
1549 select CPU_SUPPORTS_32BIT_KERNEL
1550 select CPU_SUPPORTS_64BIT_KERNEL
1552 The options selects support for the NEC VR4100 series of processors.
1553 Only choose this option if you have one of these processors as a
1554 kernel built with this option will not run on any other type of
1555 processor or vice versa.
1559 depends on SYS_HAS_CPU_R4300
1560 select CPU_SUPPORTS_32BIT_KERNEL
1561 select CPU_SUPPORTS_64BIT_KERNEL
1563 MIPS Technologies R4300-series processors.
1567 depends on SYS_HAS_CPU_R4X00
1568 select CPU_SUPPORTS_32BIT_KERNEL
1569 select CPU_SUPPORTS_64BIT_KERNEL
1570 select CPU_SUPPORTS_HUGEPAGES
1572 MIPS Technologies R4000-series processors other than 4300, including
1573 the R4000, R4400, R4600, and 4700.
1577 depends on SYS_HAS_CPU_TX49XX
1578 select CPU_HAS_PREFETCH
1579 select CPU_SUPPORTS_32BIT_KERNEL
1580 select CPU_SUPPORTS_64BIT_KERNEL
1581 select CPU_SUPPORTS_HUGEPAGES
1585 depends on SYS_HAS_CPU_R5000
1586 select CPU_SUPPORTS_32BIT_KERNEL
1587 select CPU_SUPPORTS_64BIT_KERNEL
1588 select CPU_SUPPORTS_HUGEPAGES
1590 MIPS Technologies R5000-series processors other than the Nevada.
1594 depends on SYS_HAS_CPU_R5432
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select CPU_SUPPORTS_64BIT_KERNEL
1597 select CPU_SUPPORTS_HUGEPAGES
1601 depends on SYS_HAS_CPU_R5500
1602 select CPU_SUPPORTS_32BIT_KERNEL
1603 select CPU_SUPPORTS_64BIT_KERNEL
1604 select CPU_SUPPORTS_HUGEPAGES
1606 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1611 depends on SYS_HAS_CPU_NEVADA
1612 select CPU_SUPPORTS_32BIT_KERNEL
1613 select CPU_SUPPORTS_64BIT_KERNEL
1614 select CPU_SUPPORTS_HUGEPAGES
1616 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1620 depends on SYS_HAS_CPU_R8000
1621 select CPU_HAS_PREFETCH
1622 select CPU_SUPPORTS_64BIT_KERNEL
1624 MIPS Technologies R8000 processors. Note these processors are
1625 uncommon and the support for them is incomplete.
1629 depends on SYS_HAS_CPU_R10000
1630 select CPU_HAS_PREFETCH
1631 select CPU_SUPPORTS_32BIT_KERNEL
1632 select CPU_SUPPORTS_64BIT_KERNEL
1633 select CPU_SUPPORTS_HIGHMEM
1634 select CPU_SUPPORTS_HUGEPAGES
1636 MIPS Technologies R10000-series processors.
1640 depends on SYS_HAS_CPU_RM7000
1641 select CPU_HAS_PREFETCH
1642 select CPU_SUPPORTS_32BIT_KERNEL
1643 select CPU_SUPPORTS_64BIT_KERNEL
1644 select CPU_SUPPORTS_HIGHMEM
1645 select CPU_SUPPORTS_HUGEPAGES
1649 depends on SYS_HAS_CPU_SB1
1650 select CPU_SUPPORTS_32BIT_KERNEL
1651 select CPU_SUPPORTS_64BIT_KERNEL
1652 select CPU_SUPPORTS_HIGHMEM
1653 select CPU_SUPPORTS_HUGEPAGES
1654 select WEAK_ORDERING
1656 config CPU_CAVIUM_OCTEON
1657 bool "Cavium Octeon processor"
1658 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1659 select CPU_HAS_PREFETCH
1660 select CPU_SUPPORTS_64BIT_KERNEL
1661 select WEAK_ORDERING
1662 select CPU_SUPPORTS_HIGHMEM
1663 select CPU_SUPPORTS_HUGEPAGES
1664 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1665 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1666 select MIPS_L1_CACHE_SHIFT_7
1669 The Cavium Octeon processor is a highly integrated chip containing
1670 many ethernet hardware widgets for networking tasks. The processor
1671 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1672 Full details can be found at http://www.caviumnetworks.com.
1675 bool "Broadcom BMIPS"
1676 depends on SYS_HAS_CPU_BMIPS
1678 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1679 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1680 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1681 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1682 select CPU_SUPPORTS_32BIT_KERNEL
1683 select DMA_NONCOHERENT
1685 select SWAP_IO_SPACE
1686 select WEAK_ORDERING
1687 select CPU_SUPPORTS_HIGHMEM
1688 select CPU_HAS_PREFETCH
1689 select CPU_SUPPORTS_CPUFREQ
1690 select MIPS_EXTERNAL_TIMER
1692 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1695 bool "Netlogic XLR SoC"
1696 depends on SYS_HAS_CPU_XLR
1697 select CPU_SUPPORTS_32BIT_KERNEL
1698 select CPU_SUPPORTS_64BIT_KERNEL
1699 select CPU_SUPPORTS_HIGHMEM
1700 select CPU_SUPPORTS_HUGEPAGES
1701 select WEAK_ORDERING
1702 select WEAK_REORDERING_BEYOND_LLSC
1704 Netlogic Microsystems XLR/XLS processors.
1707 bool "Netlogic XLP SoC"
1708 depends on SYS_HAS_CPU_XLP
1709 select CPU_SUPPORTS_32BIT_KERNEL
1710 select CPU_SUPPORTS_64BIT_KERNEL
1711 select CPU_SUPPORTS_HIGHMEM
1712 select WEAK_ORDERING
1713 select WEAK_REORDERING_BEYOND_LLSC
1714 select CPU_HAS_PREFETCH
1716 select CPU_SUPPORTS_HUGEPAGES
1717 select MIPS_ASID_BITS_VARIABLE
1719 Netlogic Microsystems XLP processors.
1722 config CPU_MIPS32_3_5_FEATURES
1723 bool "MIPS32 Release 3.5 Features"
1724 depends on SYS_HAS_CPU_MIPS32_R3_5
1725 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1727 Choose this option to build a kernel for release 2 or later of the
1728 MIPS32 architecture including features from the 3.5 release such as
1729 support for Enhanced Virtual Addressing (EVA).
1731 config CPU_MIPS32_3_5_EVA
1732 bool "Enhanced Virtual Addressing (EVA)"
1733 depends on CPU_MIPS32_3_5_FEATURES
1737 Choose this option if you want to enable the Enhanced Virtual
1738 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1739 One of its primary benefits is an increase in the maximum size
1740 of lowmem (up to 3GB). If unsure, say 'N' here.
1742 config CPU_MIPS32_R5_FEATURES
1743 bool "MIPS32 Release 5 Features"
1744 depends on SYS_HAS_CPU_MIPS32_R5
1745 depends on CPU_MIPS32_R2
1747 Choose this option to build a kernel for release 2 or later of the
1748 MIPS32 architecture including features from release 5 such as
1749 support for Extended Physical Addressing (XPA).
1751 config CPU_MIPS32_R5_XPA
1752 bool "Extended Physical Addressing (XPA)"
1753 depends on CPU_MIPS32_R5_FEATURES
1755 depends on !PAGE_SIZE_4KB
1756 depends on SYS_SUPPORTS_HIGHMEM
1759 select ARCH_PHYS_ADDR_T_64BIT
1762 Choose this option if you want to enable the Extended Physical
1763 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1764 benefit is to increase physical addressing equal to or greater
1765 than 40 bits. Note that this has the side effect of turning on
1766 64-bit addressing which in turn makes the PTEs 64-bit in size.
1767 If unsure, say 'N' here.
1770 config CPU_NOP_WORKAROUNDS
1773 config CPU_JUMP_WORKAROUNDS
1776 config CPU_LOONGSON2F_WORKAROUNDS
1777 bool "Loongson 2F Workarounds"
1779 select CPU_NOP_WORKAROUNDS
1780 select CPU_JUMP_WORKAROUNDS
1782 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1783 require workarounds. Without workarounds the system may hang
1784 unexpectedly. For more information please refer to the gas
1785 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1787 Loongson 2F03 and later have fixed these issues and no workarounds
1788 are needed. The workarounds have no significant side effect on them
1789 but may decrease the performance of the system so this option should
1790 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1793 If unsure, please say Y.
1794 endif # CPU_LOONGSON2F
1796 config SYS_SUPPORTS_ZBOOT
1798 select HAVE_KERNEL_GZIP
1799 select HAVE_KERNEL_BZIP2
1800 select HAVE_KERNEL_LZ4
1801 select HAVE_KERNEL_LZMA
1802 select HAVE_KERNEL_LZO
1803 select HAVE_KERNEL_XZ
1805 config SYS_SUPPORTS_ZBOOT_UART16550
1807 select SYS_SUPPORTS_ZBOOT
1809 config SYS_SUPPORTS_ZBOOT_UART_PROM
1811 select SYS_SUPPORTS_ZBOOT
1813 config CPU_LOONGSON2
1815 select CPU_SUPPORTS_32BIT_KERNEL
1816 select CPU_SUPPORTS_64BIT_KERNEL
1817 select CPU_SUPPORTS_HIGHMEM
1818 select CPU_SUPPORTS_HUGEPAGES
1820 config CPU_LOONGSON1
1824 select CPU_HAS_PREFETCH
1825 select CPU_SUPPORTS_32BIT_KERNEL
1826 select CPU_SUPPORTS_HIGHMEM
1827 select CPU_SUPPORTS_CPUFREQ
1829 config CPU_BMIPS32_3300
1830 select SMP_UP if SMP
1833 config CPU_BMIPS4350
1835 select SYS_SUPPORTS_SMP
1836 select SYS_SUPPORTS_HOTPLUG_CPU
1838 config CPU_BMIPS4380
1840 select MIPS_L1_CACHE_SHIFT_6
1841 select SYS_SUPPORTS_SMP
1842 select SYS_SUPPORTS_HOTPLUG_CPU
1845 config CPU_BMIPS5000
1847 select MIPS_CPU_SCACHE
1848 select MIPS_L1_CACHE_SHIFT_7
1849 select SYS_SUPPORTS_SMP
1850 select SYS_SUPPORTS_HOTPLUG_CPU
1853 config SYS_HAS_CPU_LOONGSON3
1855 select CPU_SUPPORTS_CPUFREQ
1858 config SYS_HAS_CPU_LOONGSON2E
1861 config SYS_HAS_CPU_LOONGSON2F
1863 select CPU_SUPPORTS_CPUFREQ
1864 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1865 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1867 config SYS_HAS_CPU_LOONGSON1B
1870 config SYS_HAS_CPU_LOONGSON1C
1873 config SYS_HAS_CPU_MIPS32_R1
1876 config SYS_HAS_CPU_MIPS32_R2
1879 config SYS_HAS_CPU_MIPS32_R3_5
1882 config SYS_HAS_CPU_MIPS32_R5
1885 config SYS_HAS_CPU_MIPS32_R6
1888 config SYS_HAS_CPU_MIPS64_R1
1891 config SYS_HAS_CPU_MIPS64_R2
1894 config SYS_HAS_CPU_MIPS64_R6
1897 config SYS_HAS_CPU_R3000
1900 config SYS_HAS_CPU_TX39XX
1903 config SYS_HAS_CPU_VR41XX
1906 config SYS_HAS_CPU_R4300
1909 config SYS_HAS_CPU_R4X00
1912 config SYS_HAS_CPU_TX49XX
1915 config SYS_HAS_CPU_R5000
1918 config SYS_HAS_CPU_R5432
1921 config SYS_HAS_CPU_R5500
1924 config SYS_HAS_CPU_NEVADA
1927 config SYS_HAS_CPU_R8000
1930 config SYS_HAS_CPU_R10000
1933 config SYS_HAS_CPU_RM7000
1936 config SYS_HAS_CPU_SB1
1939 config SYS_HAS_CPU_CAVIUM_OCTEON
1942 config SYS_HAS_CPU_BMIPS
1945 config SYS_HAS_CPU_BMIPS32_3300
1947 select SYS_HAS_CPU_BMIPS
1949 config SYS_HAS_CPU_BMIPS4350
1951 select SYS_HAS_CPU_BMIPS
1953 config SYS_HAS_CPU_BMIPS4380
1955 select SYS_HAS_CPU_BMIPS
1957 config SYS_HAS_CPU_BMIPS5000
1959 select SYS_HAS_CPU_BMIPS
1961 config SYS_HAS_CPU_XLR
1964 config SYS_HAS_CPU_XLP
1967 config MIPS_MALTA_PM
1968 depends on MIPS_MALTA
1974 # CPU may reorder R->R, R->W, W->R, W->W
1975 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1977 config WEAK_ORDERING
1981 # CPU may reorder reads and writes beyond LL/SC
1982 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1984 config WEAK_REORDERING_BEYOND_LLSC
1989 # These two indicate any level of the MIPS32 and MIPS64 architecture
1993 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1997 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2000 # These two indicate the revision of the architecture, either Release 1 or Release 2
2004 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2008 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2014 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2016 select HAVE_ARCH_BITREVERSE
2017 select MIPS_ASID_BITS_VARIABLE
2026 config SYS_SUPPORTS_32BIT_KERNEL
2028 config SYS_SUPPORTS_64BIT_KERNEL
2030 config CPU_SUPPORTS_32BIT_KERNEL
2032 config CPU_SUPPORTS_64BIT_KERNEL
2034 config CPU_SUPPORTS_CPUFREQ
2036 config CPU_SUPPORTS_ADDRWINCFG
2038 config CPU_SUPPORTS_HUGEPAGES
2040 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2042 config MIPS_PGD_C0_CONTEXT
2044 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2047 # Set to y for ptrace access to watch registers.
2049 config HARDWARE_WATCHPOINTS
2051 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2056 prompt "Kernel code model"
2058 You should only select this option if you have a workload that
2059 actually benefits from 64-bit processing or if your machine has
2060 large memory. You will only be presented a single option in this
2061 menu if your system does not support both 32-bit and 64-bit kernels.
2064 bool "32-bit kernel"
2065 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2068 Select this option if you want to build a 32-bit kernel.
2071 bool "64-bit kernel"
2072 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2074 Select this option if you want to build a 64-bit kernel.
2079 bool "KVM Guest Kernel"
2080 depends on BROKEN_ON_SMP
2082 Select this option if building a guest kernel for KVM (Trap & Emulate)
2085 config KVM_GUEST_TIMER_FREQ
2086 int "Count/Compare Timer Frequency (MHz)"
2087 depends on KVM_GUEST
2090 Set this to non-zero if building a guest kernel for KVM to skip RTC
2091 emulation when determining guest CPU Frequency. Instead, the guest's
2092 timer frequency is specified directly.
2094 config MIPS_VA_BITS_48
2095 bool "48 bits virtual memory"
2098 Support a maximum at least 48 bits of application virtual
2099 memory. Default is 40 bits or less, depending on the CPU.
2100 For page sizes 16k and above, this option results in a small
2101 memory overhead for page tables. For 4k page size, a fourth
2102 level of page tables is added which imposes both a memory
2103 overhead as well as slower TLB fault handling.
2108 prompt "Kernel page size"
2109 default PAGE_SIZE_4KB
2111 config PAGE_SIZE_4KB
2113 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2115 This option select the standard 4kB Linux page size. On some
2116 R3000-family processors this is the only available page size. Using
2117 4kB page size will minimize memory consumption and is therefore
2118 recommended for low memory systems.
2120 config PAGE_SIZE_8KB
2122 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2123 depends on !MIPS_VA_BITS_48
2125 Using 8kB page size will result in higher performance kernel at
2126 the price of higher memory consumption. This option is available
2127 only on R8000 and cnMIPS processors. Note that you will need a
2128 suitable Linux distribution to support this.
2130 config PAGE_SIZE_16KB
2132 depends on !CPU_R3000 && !CPU_TX39XX
2134 Using 16kB page size will result in higher performance kernel at
2135 the price of higher memory consumption. This option is available on
2136 all non-R3000 family processors. Note that you will need a suitable
2137 Linux distribution to support this.
2139 config PAGE_SIZE_32KB
2141 depends on CPU_CAVIUM_OCTEON
2142 depends on !MIPS_VA_BITS_48
2144 Using 32kB page size will result in higher performance kernel at
2145 the price of higher memory consumption. This option is available
2146 only on cnMIPS cores. Note that you will need a suitable Linux
2147 distribution to support this.
2149 config PAGE_SIZE_64KB
2151 depends on !CPU_R3000 && !CPU_TX39XX
2153 Using 64kB page size will result in higher performance kernel at
2154 the price of higher memory consumption. This option is available on
2155 all non-R3000 family processor. Not that at the time of this
2156 writing this option is still high experimental.
2160 config FORCE_MAX_ZONEORDER
2161 int "Maximum zone order"
2162 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2163 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2164 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2165 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2166 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2167 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2171 The kernel memory allocator divides physically contiguous memory
2172 blocks into "zones", where each zone is a power of two number of
2173 pages. This option selects the largest power of two that the kernel
2174 keeps in the memory allocator. If you need to allocate very large
2175 blocks of physically contiguous memory, then you may need to
2176 increase this value.
2178 This config option is actually maximum order plus one. For example,
2179 a value of 11 means that the largest free memory block is 2^10 pages.
2181 The page size is not necessarily 4KB. Keep this in mind
2182 when choosing a value for this option.
2187 config IP22_CPU_SCACHE
2192 # Support for a MIPS32 / MIPS64 style S-caches
2194 config MIPS_CPU_SCACHE
2198 config R5000_CPU_SCACHE
2202 config RM7000_CPU_SCACHE
2206 config SIBYTE_DMA_PAGEOPS
2207 bool "Use DMA to clear/copy pages"
2210 Instead of using the CPU to zero and copy pages, use a Data Mover
2211 channel. These DMA channels are otherwise unused by the standard
2212 SiByte Linux port. Seems to give a small performance benefit.
2214 config CPU_HAS_PREFETCH
2217 config CPU_GENERIC_DUMP_TLB
2219 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2223 default y if !(CPU_R3000 || CPU_TX39XX)
2225 config CPU_R4K_CACHE_TLB
2227 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2230 bool "MIPS MT SMP support (1 TC on each available VPE)"
2232 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2233 select CPU_MIPSR2_IRQ_VI
2234 select CPU_MIPSR2_IRQ_EI
2239 select SYS_SUPPORTS_SMP
2240 select SYS_SUPPORTS_SCHED_SMT
2241 select MIPS_PERF_SHARED_TC_COUNTERS
2243 This is a kernel model which is known as SMVP. This is supported
2244 on cores with the MT ASE and uses the available VPEs to implement
2245 virtual processors which supports SMP. This is equivalent to the
2246 Intel Hyperthreading feature. For further information go to
2247 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2253 bool "SMT (multithreading) scheduler support"
2254 depends on SYS_SUPPORTS_SCHED_SMT
2257 SMT scheduler support improves the CPU scheduler's decision making
2258 when dealing with MIPS MT enabled cores at a cost of slightly
2259 increased overhead in some places. If unsure say N here.
2261 config SYS_SUPPORTS_SCHED_SMT
2264 config SYS_SUPPORTS_MULTITHREADING
2267 config MIPS_MT_FPAFF
2268 bool "Dynamic FPU affinity for FP-intensive threads"
2270 depends on MIPS_MT_SMP
2272 config MIPSR2_TO_R6_EMULATOR
2273 bool "MIPS R2-to-R6 emulator"
2274 depends on CPU_MIPSR6
2277 Choose this option if you want to run non-R6 MIPS userland code.
2278 Even if you say 'Y' here, the emulator will still be disabled by
2279 default. You can enable it using the 'mipsr2emu' kernel option.
2280 The only reason this is a build-time option is to save ~14K from the
2283 config MIPS_VPE_LOADER
2284 bool "VPE loader support."
2285 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2286 select CPU_MIPSR2_IRQ_VI
2287 select CPU_MIPSR2_IRQ_EI
2290 Includes a loader for loading an elf relocatable object
2291 onto another VPE and running it.
2293 config MIPS_VPE_LOADER_CMP
2296 depends on MIPS_VPE_LOADER && MIPS_CMP
2298 config MIPS_VPE_LOADER_MT
2301 depends on MIPS_VPE_LOADER && !MIPS_CMP
2303 config MIPS_VPE_LOADER_TOM
2304 bool "Load VPE program into memory hidden from linux"
2305 depends on MIPS_VPE_LOADER
2308 The loader can use memory that is present but has been hidden from
2309 Linux using the kernel command line option "mem=xxMB". It's up to
2310 you to ensure the amount you put in the option and the space your
2311 program requires is less or equal to the amount physically present.
2313 config MIPS_VPE_APSP_API
2314 bool "Enable support for AP/SP API (RTLX)"
2315 depends on MIPS_VPE_LOADER
2318 config MIPS_VPE_APSP_API_CMP
2321 depends on MIPS_VPE_APSP_API && MIPS_CMP
2323 config MIPS_VPE_APSP_API_MT
2326 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2329 bool "MIPS CMP framework support (DEPRECATED)"
2330 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2333 select SYS_SUPPORTS_SMP
2334 select WEAK_ORDERING
2337 Select this if you are using a bootloader which implements the "CMP
2338 framework" protocol (ie. YAMON) and want your kernel to make use of
2339 its ability to start secondary CPUs.
2341 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2345 bool "MIPS Coherent Processing System support"
2346 depends on SYS_SUPPORTS_MIPS_CPS
2348 select MIPS_CPS_PM if HOTPLUG_CPU
2350 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2351 select SYS_SUPPORTS_HOTPLUG_CPU
2352 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2353 select SYS_SUPPORTS_SMP
2354 select WEAK_ORDERING
2356 Select this if you wish to run an SMP kernel across multiple cores
2357 within a MIPS Coherent Processing System. When this option is
2358 enabled the kernel will probe for other cores and boot them with
2359 no external assistance. It is safe to enable this when hardware
2360 support is unavailable.
2373 config SB1_PASS_2_WORKAROUNDS
2375 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2378 config SB1_PASS_2_1_WORKAROUNDS
2380 depends on CPU_SB1 && CPU_SB1_PASS_2
2384 config ARCH_PHYS_ADDR_T_64BIT
2388 prompt "SmartMIPS or microMIPS ASE support"
2390 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2393 Select this if you want neither microMIPS nor SmartMIPS support
2395 config CPU_HAS_SMARTMIPS
2396 depends on SYS_SUPPORTS_SMARTMIPS
2399 SmartMIPS is a extension of the MIPS32 architecture aimed at
2400 increased security at both hardware and software level for
2401 smartcards. Enabling this option will allow proper use of the
2402 SmartMIPS instructions by Linux applications. However a kernel with
2403 this option will not work on a MIPS core without SmartMIPS core. If
2404 you don't know you probably don't have SmartMIPS and should say N
2407 config CPU_MICROMIPS
2408 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2411 When this option is enabled the kernel will be built using the
2417 bool "Support for the MIPS SIMD Architecture"
2418 depends on CPU_SUPPORTS_MSA
2419 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2421 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2422 and a set of SIMD instructions to operate on them. When this option
2423 is enabled the kernel will support allocating & switching MSA
2424 vector register contexts. If you know that your kernel will only be
2425 running on CPUs which do not support MSA or that your userland will
2426 not be making use of it then you may wish to say N here to reduce
2427 the size & complexity of your kernel.
2441 # Vectored interrupt mode is an R2 feature
2443 config CPU_MIPSR2_IRQ_VI
2447 # Extended interrupt mode is an R2 feature
2449 config CPU_MIPSR2_IRQ_EI
2454 depends on !CPU_R3000
2460 config CPU_DADDI_WORKAROUNDS
2463 config CPU_R4000_WORKAROUNDS
2465 select CPU_R4400_WORKAROUNDS
2467 config CPU_R4400_WORKAROUNDS
2470 config MIPS_ASID_SHIFT
2472 default 6 if CPU_R3000 || CPU_TX39XX
2473 default 4 if CPU_R8000
2476 config MIPS_ASID_BITS
2478 default 0 if MIPS_ASID_BITS_VARIABLE
2479 default 6 if CPU_R3000 || CPU_TX39XX
2482 config MIPS_ASID_BITS_VARIABLE
2486 # - Highmem only makes sense for the 32-bit kernel.
2487 # - The current highmem code will only work properly on physically indexed
2488 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2489 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2490 # moment we protect the user and offer the highmem option only on machines
2491 # where it's known to be safe. This will not offer highmem on a few systems
2492 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2493 # indexed CPUs but we're playing safe.
2494 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2495 # know they might have memory configurations that could make use of highmem
2499 bool "High Memory Support"
2500 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2502 config CPU_SUPPORTS_HIGHMEM
2505 config SYS_SUPPORTS_HIGHMEM
2508 config SYS_SUPPORTS_SMARTMIPS
2511 config SYS_SUPPORTS_MICROMIPS
2514 config SYS_SUPPORTS_MIPS16
2517 This option must be set if a kernel might be executed on a MIPS16-
2518 enabled CPU even if MIPS16 is not actually being used. In other
2519 words, it makes the kernel MIPS16-tolerant.
2521 config CPU_SUPPORTS_MSA
2524 config ARCH_FLATMEM_ENABLE
2526 depends on !NUMA && !CPU_LOONGSON2
2528 config ARCH_DISCONTIGMEM_ENABLE
2530 default y if SGI_IP27
2532 Say Y to support efficient handling of discontiguous physical memory,
2533 for architectures which are either NUMA (Non-Uniform Memory Access)
2534 or have huge holes in the physical address space for other reasons.
2535 See <file:Documentation/vm/numa> for more.
2537 config ARCH_SPARSEMEM_ENABLE
2539 select SPARSEMEM_STATIC
2543 depends on SYS_SUPPORTS_NUMA
2545 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2546 Access). This option improves performance on systems with more
2547 than two nodes; on two node systems it is generally better to
2548 leave it disabled; on single node systems disable this option
2551 config SYS_SUPPORTS_NUMA
2555 bool "Relocatable kernel"
2556 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2558 This builds a kernel image that retains relocation information
2559 so it can be loaded someplace besides the default 1MB.
2560 The relocations make the kernel binary about 15% larger,
2561 but are discarded at runtime
2563 config RELOCATION_TABLE_SIZE
2564 hex "Relocation table size"
2565 depends on RELOCATABLE
2566 range 0x0 0x01000000
2567 default "0x00100000"
2569 A table of relocation data will be appended to the kernel binary
2570 and parsed at boot to fix up the relocated kernel.
2572 This option allows the amount of space reserved for the table to be
2573 adjusted, although the default of 1Mb should be ok in most cases.
2575 The build will fail and a valid size suggested if this is too small.
2577 If unsure, leave at the default value.
2579 config RANDOMIZE_BASE
2580 bool "Randomize the address of the kernel image"
2581 depends on RELOCATABLE
2583 Randomizes the physical and virtual address at which the
2584 kernel image is loaded, as a security feature that
2585 deters exploit attempts relying on knowledge of the location
2586 of kernel internals.
2588 Entropy is generated using any coprocessor 0 registers available.
2590 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2594 config RANDOMIZE_BASE_MAX_OFFSET
2595 hex "Maximum kASLR offset" if EXPERT
2596 depends on RANDOMIZE_BASE
2597 range 0x0 0x40000000 if EVA || 64BIT
2598 range 0x0 0x08000000
2599 default "0x01000000"
2601 When kASLR is active, this provides the maximum offset that will
2602 be applied to the kernel image. It should be set according to the
2603 amount of physical RAM available in the target system minus
2604 PHYSICAL_START and must be a power of 2.
2606 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2607 EVA or 64-bit. The default is 16Mb.
2612 depends on NEED_MULTIPLE_NODES
2614 config HW_PERF_EVENTS
2615 bool "Enable hardware performance counter support for perf events"
2616 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2619 Enable hardware performance counter support for perf events. If
2620 disabled, perf events will use software events only.
2625 bool "Multi-Processing support"
2626 depends on SYS_SUPPORTS_SMP
2628 This enables support for systems with more than one CPU. If you have
2629 a system with only one CPU, say N. If you have a system with more
2630 than one CPU, say Y.
2632 If you say N here, the kernel will run on uni- and multiprocessor
2633 machines, but will use only one CPU of a multiprocessor machine. If
2634 you say Y here, the kernel will run on many, but not all,
2635 uniprocessor machines. On a uniprocessor machine, the kernel
2636 will run faster if you say N here.
2638 People using multiprocessor machines who say Y here should also say
2639 Y to "Enhanced Real Time Clock Support", below.
2641 See also the SMP-HOWTO available at
2642 <http://www.tldp.org/docs.html#howto>.
2644 If you don't know what to do here, say N.
2647 bool "Support for hot-pluggable CPUs"
2648 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2650 Say Y here to allow turning CPUs off and on. CPUs can be
2651 controlled through /sys/devices/system/cpu.
2652 (Note: power management support will enable this option
2653 automatically on SMP systems. )
2654 Say N if you want to disable CPU hotplug.
2659 config SYS_SUPPORTS_MIPS_CMP
2662 config SYS_SUPPORTS_MIPS_CPS
2665 config SYS_SUPPORTS_SMP
2668 config NR_CPUS_DEFAULT_4
2671 config NR_CPUS_DEFAULT_8
2674 config NR_CPUS_DEFAULT_16
2677 config NR_CPUS_DEFAULT_32
2680 config NR_CPUS_DEFAULT_64
2684 int "Maximum number of CPUs (2-256)"
2687 default "4" if NR_CPUS_DEFAULT_4
2688 default "8" if NR_CPUS_DEFAULT_8
2689 default "16" if NR_CPUS_DEFAULT_16
2690 default "32" if NR_CPUS_DEFAULT_32
2691 default "64" if NR_CPUS_DEFAULT_64
2693 This allows you to specify the maximum number of CPUs which this
2694 kernel will support. The maximum supported value is 32 for 32-bit
2695 kernel and 64 for 64-bit kernels; the minimum value which makes
2696 sense is 1 for Qemu (useful only for kernel debugging purposes)
2697 and 2 for all others.
2699 This is purely to save memory - each supported CPU adds
2700 approximately eight kilobytes to the kernel image. For best
2701 performance should round up your number of processors to the next
2704 config MIPS_PERF_SHARED_TC_COUNTERS
2707 config MIPS_NR_CPU_NR_MAP_1024
2710 config MIPS_NR_CPU_NR_MAP
2713 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2714 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2717 # Timer Interrupt Frequency Configuration
2721 prompt "Timer frequency"
2724 Allows the configuration of the timer frequency.
2727 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2730 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2733 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2736 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2739 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2742 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2745 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2748 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2752 config SYS_SUPPORTS_24HZ
2755 config SYS_SUPPORTS_48HZ
2758 config SYS_SUPPORTS_100HZ
2761 config SYS_SUPPORTS_128HZ
2764 config SYS_SUPPORTS_250HZ
2767 config SYS_SUPPORTS_256HZ
2770 config SYS_SUPPORTS_1000HZ
2773 config SYS_SUPPORTS_1024HZ
2776 config SYS_SUPPORTS_ARBIT_HZ
2778 default y if !SYS_SUPPORTS_24HZ && \
2779 !SYS_SUPPORTS_48HZ && \
2780 !SYS_SUPPORTS_100HZ && \
2781 !SYS_SUPPORTS_128HZ && \
2782 !SYS_SUPPORTS_250HZ && \
2783 !SYS_SUPPORTS_256HZ && \
2784 !SYS_SUPPORTS_1000HZ && \
2785 !SYS_SUPPORTS_1024HZ
2791 default 100 if HZ_100
2792 default 128 if HZ_128
2793 default 250 if HZ_250
2794 default 256 if HZ_256
2795 default 1000 if HZ_1000
2796 default 1024 if HZ_1024
2799 def_bool HIGH_RES_TIMERS
2801 source "kernel/Kconfig.preempt"
2804 bool "Kexec system call"
2807 kexec is a system call that implements the ability to shutdown your
2808 current kernel, and to start another kernel. It is like a reboot
2809 but it is independent of the system firmware. And like a reboot
2810 you can start any kernel with it, not just Linux.
2812 The name comes from the similarity to the exec system call.
2814 It is an ongoing process to be certain the hardware in a machine
2815 is properly shutdown, so do not be surprised if this code does not
2816 initially work for you. As of this writing the exact hardware
2817 interface is strongly in flux, so no good recommendation can be
2821 bool "Kernel crash dumps"
2823 Generate crash dump after being started by kexec.
2824 This should be normally only set in special crash dump kernels
2825 which are loaded in the main kernel with kexec-tools into
2826 a specially reserved region and then later executed after
2827 a crash by kdump/kexec. The crash dump kernel must be compiled
2828 to a memory address not used by the main kernel or firmware using
2831 config PHYSICAL_START
2832 hex "Physical address where the kernel is loaded"
2833 default "0xffffffff84000000" if 64BIT
2834 default "0x84000000" if 32BIT
2835 depends on CRASH_DUMP
2837 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2838 If you plan to use kernel for capturing the crash dump change
2839 this value to start of the reserved region (the "X" value as
2840 specified in the "crashkernel=YM@XM" command line boot parameter
2841 passed to the panic-ed kernel).
2844 bool "Enable seccomp to safely compute untrusted bytecode"
2848 This kernel feature is useful for number crunching applications
2849 that may need to compute untrusted bytecode during their
2850 execution. By using pipes or other transports made available to
2851 the process as file descriptors supporting the read/write
2852 syscalls, it's possible to isolate those applications in
2853 their own address space using seccomp. Once seccomp is
2854 enabled via /proc/<pid>/seccomp, it cannot be disabled
2855 and the task is only allowed to execute a few safe syscalls
2856 defined by each seccomp mode.
2858 If unsure, say Y. Only embedded should say N here.
2860 config MIPS_O32_FP64_SUPPORT
2861 bool "Support for O32 binaries using 64-bit FP"
2862 depends on 32BIT || MIPS32_O32
2864 When this is enabled, the kernel will support use of 64-bit floating
2865 point registers with binaries using the O32 ABI along with the
2866 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2867 32-bit MIPS systems this support is at the cost of increasing the
2868 size and complexity of the compiled FPU emulator. Thus if you are
2869 running a MIPS32 system and know that none of your userland binaries
2870 will require 64-bit floating point, you may wish to reduce the size
2871 of your kernel & potentially improve FP emulation performance by
2874 Although binutils currently supports use of this flag the details
2875 concerning its effect upon the O32 ABI in userland are still being
2876 worked on. In order to avoid userland becoming dependant upon current
2877 behaviour before the details have been finalised, this option should
2878 be considered experimental and only enabled by those working upon
2886 select OF_EARLY_FLATTREE
2893 prompt "Kernel appended dtb support" if USE_OF
2894 default MIPS_NO_APPENDED_DTB
2896 config MIPS_NO_APPENDED_DTB
2899 Do not enable appended dtb support.
2901 config MIPS_ELF_APPENDED_DTB
2904 With this option, the boot code will look for a device tree binary
2905 DTB) included in the vmlinux ELF section .appended_dtb. By default
2906 it is empty and the DTB can be appended using binutils command
2909 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2911 This is meant as a backward compatiblity convenience for those
2912 systems with a bootloader that can't be upgraded to accommodate
2913 the documented boot protocol using a device tree.
2915 config MIPS_RAW_APPENDED_DTB
2916 bool "vmlinux.bin or vmlinuz.bin"
2918 With this option, the boot code will look for a device tree binary
2919 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2920 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2922 This is meant as a backward compatibility convenience for those
2923 systems with a bootloader that can't be upgraded to accommodate
2924 the documented boot protocol using a device tree.
2926 Beware that there is very little in terms of protection against
2927 this option being confused by leftover garbage in memory that might
2928 look like a DTB header after a reboot if no actual DTB is appended
2929 to vmlinux.bin. Do not leave this option active in a production kernel
2930 if you don't intend to always append a DTB.
2934 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2935 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2938 default MIPS_CMDLINE_FROM_BOOTLOADER
2940 config MIPS_CMDLINE_FROM_DTB
2942 bool "Dtb kernel arguments if available"
2944 config MIPS_CMDLINE_DTB_EXTEND
2946 bool "Extend dtb kernel arguments with bootloader arguments"
2948 config MIPS_CMDLINE_FROM_BOOTLOADER
2949 bool "Bootloader kernel arguments if available"
2951 config MIPS_CMDLINE_BUILTIN_EXTEND
2952 depends on CMDLINE_BOOL
2953 bool "Extend builtin kernel arguments with bootloader arguments"
2958 config LOCKDEP_SUPPORT
2962 config STACKTRACE_SUPPORT
2966 config HAVE_LATENCYTOP_SUPPORT
2970 config PGTABLE_LEVELS
2972 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2973 default 3 if 64BIT && !PAGE_SIZE_64KB
2976 source "init/Kconfig"
2978 source "kernel/Kconfig.freezer"
2980 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2988 bool "Support for PCI controller"
2989 depends on HW_HAS_PCI
2992 Find out whether you have a PCI motherboard. PCI is the name of a
2993 bus system, i.e. the way the CPU talks to the other stuff inside
2994 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2998 bool "Support for HT-linked PCI"
3000 depends on CPU_LOONGSON3
3004 Loongson family machines use Hyper-Transport bus for inter-core
3005 connection and device connection. The PCI bus is a subordinate
3006 linked at HT. Choose Y for Loongson-3 based machines.
3011 config PCI_DOMAINS_GENERIC
3014 config PCI_DRIVERS_GENERIC
3015 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3018 config PCI_DRIVERS_LEGACY
3019 def_bool !PCI_DRIVERS_GENERIC
3020 select NO_GENERIC_PCI_IOPORT_MAP
3022 source "drivers/pci/Kconfig"
3025 # ISA support is now enabled via select. Too many systems still have the one
3026 # or other ISA chip on the board that users don't know about so don't expect
3027 # users to choose the right thing ...
3034 depends on HW_HAS_EISA
3036 select GENERIC_ISA_DMA
3038 The Extended Industry Standard Architecture (EISA) bus was
3039 developed as an open alternative to the IBM MicroChannel bus.
3041 The EISA bus provided some of the features of the IBM MicroChannel
3042 bus while maintaining backward compatibility with cards made for
3043 the older ISA bus. The EISA bus saw limited use between 1988 and
3044 1995 when it was made obsolete by the PCI bus.
3046 Say Y here if you are building a kernel for an EISA-based machine.
3050 source "drivers/eisa/Kconfig"
3053 bool "TURBOchannel support"
3054 depends on MACH_DECSTATION
3056 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3057 processors. TURBOchannel programming specifications are available
3059 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3061 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3062 Linux driver support status is documented at:
3063 <http://www.linux-mips.org/wiki/DECstation>
3069 config ARCH_MMAP_RND_BITS_MIN
3073 config ARCH_MMAP_RND_BITS_MAX
3077 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3080 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3087 select MIPS_EXTERNAL_TIMER
3095 source "drivers/pcmcia/Kconfig"
3098 tristate "RapidIO support"
3102 If you say Y here, the kernel will include drivers and
3103 infrastructure code to support RapidIO interconnect devices.
3105 source "drivers/rapidio/Kconfig"
3109 menu "Executable file formats"
3111 source "fs/Kconfig.binfmt"
3116 config MIPS32_COMPAT
3122 config SYSVIPC_COMPAT
3126 bool "Kernel support for o32 binaries"
3128 select ARCH_WANT_OLD_COMPAT_IPC
3130 select MIPS32_COMPAT
3131 select SYSVIPC_COMPAT if SYSVIPC
3133 Select this option if you want to run o32 binaries. These are pure
3134 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3135 existing binaries are in this format.
3140 bool "Kernel support for n32 binaries"
3143 select MIPS32_COMPAT
3144 select SYSVIPC_COMPAT if SYSVIPC
3146 Select this option if you want to run n32 binaries. These are
3147 64-bit binaries using 32-bit quantities for addressing and certain
3148 data that would normally be 64-bit. They are used in special
3155 default y if MIPS32_O32 || MIPS32_N32
3160 menu "Power management options"
3162 config ARCH_HIBERNATION_POSSIBLE
3164 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3166 config ARCH_SUSPEND_POSSIBLE
3168 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3170 source "kernel/power/Kconfig"
3174 config MIPS_EXTERNAL_TIMER
3177 menu "CPU Power Management"
3179 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3180 source "drivers/cpufreq/Kconfig"
3183 source "drivers/cpuidle/Kconfig"
3187 source "net/Kconfig"
3189 source "drivers/Kconfig"
3191 source "drivers/firmware/Kconfig"
3195 source "arch/mips/Kconfig.debug"
3197 source "security/Kconfig"
3199 source "crypto/Kconfig"
3201 source "lib/Kconfig"
3203 source "arch/mips/kvm/Kconfig"