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
236 Build a generic DT-based kernel image that boots on select
237 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
238 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
239 must be set appropriately for your board.
242 bool "Broadcom BCM47XX based boards"
246 select DMA_NONCOHERENT
249 select SYS_HAS_CPU_MIPS32_R1
250 select NO_EXCEPT_FILL
251 select SYS_SUPPORTS_32BIT_KERNEL
252 select SYS_SUPPORTS_LITTLE_ENDIAN
253 select SYS_SUPPORTS_MIPS16
254 select SYS_HAS_EARLY_PRINTK
255 select USE_GENERIC_EARLY_PRINTK_8250
257 select LEDS_GPIO_REGISTER
261 Support for BCM47XX based boards
264 bool "Broadcom BCM63XX based boards"
269 select DMA_NONCOHERENT
271 select SYS_SUPPORTS_32BIT_KERNEL
272 select SYS_SUPPORTS_BIG_ENDIAN
273 select SYS_HAS_EARLY_PRINTK
277 select MIPS_L1_CACHE_SHIFT_4
279 Support for BCM63XX based boards
286 select DMA_NONCOHERENT
292 select PCI_GT64XXX_PCI0
294 select SYS_HAS_CPU_NEVADA
295 select SYS_HAS_EARLY_PRINTK
296 select SYS_SUPPORTS_32BIT_KERNEL
297 select SYS_SUPPORTS_64BIT_KERNEL
298 select SYS_SUPPORTS_LITTLE_ENDIAN
299 select USE_GENERIC_EARLY_PRINTK_8250
301 config MACH_DECSTATION
305 select CEVT_R4K if CPU_R4X00
307 select CSRC_R4K if CPU_R4X00
308 select CPU_DADDI_WORKAROUNDS if 64BIT
309 select CPU_R4000_WORKAROUNDS if 64BIT
310 select CPU_R4400_WORKAROUNDS if 64BIT
311 select DMA_NONCOHERENT
314 select SYS_HAS_CPU_R3000
315 select SYS_HAS_CPU_R4X00
316 select SYS_SUPPORTS_32BIT_KERNEL
317 select SYS_SUPPORTS_64BIT_KERNEL
318 select SYS_SUPPORTS_LITTLE_ENDIAN
319 select SYS_SUPPORTS_128HZ
320 select SYS_SUPPORTS_256HZ
321 select SYS_SUPPORTS_1024HZ
322 select MIPS_L1_CACHE_SHIFT_4
324 This enables support for DEC's MIPS based workstations. For details
325 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
326 DECstation porting pages on <http://decstation.unix-ag.org/>.
328 If you have one of the following DECstation Models you definitely
329 want to choose R4xx0 for the CPU Type:
336 otherwise choose R3000.
339 bool "Jazz family of machines"
342 select ARCH_MAY_HAVE_PC_FDC
345 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
346 select GENERIC_ISA_DMA
347 select HAVE_PCSPKR_PLATFORM
352 select SYS_HAS_CPU_R4X00
353 select SYS_SUPPORTS_32BIT_KERNEL
354 select SYS_SUPPORTS_64BIT_KERNEL
355 select SYS_SUPPORTS_100HZ
357 This a family of machines based on the MIPS R4030 chipset which was
358 used by several vendors to build RISC/os and Windows NT workstations.
359 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
360 Olivetti M700-10 workstations.
363 bool "Ingenic SoC based machines"
364 select SYS_SUPPORTS_32BIT_KERNEL
365 select SYS_SUPPORTS_LITTLE_ENDIAN
366 select SYS_SUPPORTS_ZBOOT_UART16550
367 select DMA_NONCOHERENT
372 select GENERIC_IRQ_CHIP
378 bool "Lantiq based platforms"
379 select DMA_NONCOHERENT
383 select SYS_HAS_CPU_MIPS32_R1
384 select SYS_HAS_CPU_MIPS32_R2
385 select SYS_SUPPORTS_BIG_ENDIAN
386 select SYS_SUPPORTS_32BIT_KERNEL
387 select SYS_SUPPORTS_MIPS16
388 select SYS_SUPPORTS_MULTITHREADING
389 select SYS_HAS_EARLY_PRINTK
396 select PINCTRL_LANTIQ
397 select ARCH_HAS_RESET_CONTROLLER
398 select RESET_CONTROLLER
401 bool "LASAT Networks platforms"
405 select DMA_NONCOHERENT
406 select SYS_HAS_EARLY_PRINTK
409 select PCI_GT64XXX_PCI0
411 select R5000_CPU_SCACHE
412 select SYS_HAS_CPU_R5000
413 select SYS_SUPPORTS_32BIT_KERNEL
414 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
415 select SYS_SUPPORTS_LITTLE_ENDIAN
417 config MACH_LOONGSON32
418 bool "Loongson-1 family of machines"
419 select SYS_SUPPORTS_ZBOOT
421 This enables support for the Loongson-1 family of machines.
423 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
424 the Institute of Computing Technology (ICT), Chinese Academy of
427 config MACH_LOONGSON64
428 bool "Loongson-2/3 family of machines"
429 select SYS_SUPPORTS_ZBOOT
431 This enables the support of Loongson-2/3 family of machines.
433 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
434 family of multi-core CPUs. They are both 64-bit general-purpose
435 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
436 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
437 in the People's Republic of China. The chief architect is Professor
440 config MACH_PISTACHIO
441 bool "IMG Pistachio SoC based boards"
445 select CLKSRC_MIPS_GIC
448 select DMA_NONCOHERENT
453 select MIPS_CPU_SCACHE
457 select SYS_HAS_CPU_MIPS32_R2
458 select SYS_SUPPORTS_32BIT_KERNEL
459 select SYS_SUPPORTS_LITTLE_ENDIAN
460 select SYS_SUPPORTS_MIPS_CPS
461 select SYS_SUPPORTS_MULTITHREADING
462 select SYS_SUPPORTS_RELOCATABLE
463 select SYS_SUPPORTS_ZBOOT
464 select SYS_HAS_EARLY_PRINTK
465 select USE_GENERIC_EARLY_PRINTK_8250
468 This enables support for the IMG Pistachio SoC platform.
471 bool "MIPSfpga Xilinx based boards"
481 select MIPS_CPU_SCACHE
482 select SYS_HAS_EARLY_PRINTK
483 select SYS_HAS_CPU_MIPS32_R2
484 select SYS_SUPPORTS_32BIT_KERNEL
485 select SYS_SUPPORTS_LITTLE_ENDIAN
486 select SYS_SUPPORTS_ZBOOT_UART16550
488 select USE_GENERIC_EARLY_PRINTK_8250
491 This enables support for the IMG University Program MIPSfpga platform.
494 bool "MIPS Malta board"
495 select ARCH_MAY_HAVE_PC_FDC
501 select CLKSRC_MIPS_GIC
503 select DMA_MAYBE_COHERENT
504 select GENERIC_ISA_DMA
505 select HAVE_PCSPKR_PLATFORM
512 select MIPS_CPU_SCACHE
513 select MIPS_L1_CACHE_SHIFT_6
514 select PCI_GT64XXX_PCI0
518 select SYS_HAS_CPU_MIPS32_R1
519 select SYS_HAS_CPU_MIPS32_R2
520 select SYS_HAS_CPU_MIPS32_R3_5
521 select SYS_HAS_CPU_MIPS32_R5
522 select SYS_HAS_CPU_MIPS32_R6
523 select SYS_HAS_CPU_MIPS64_R1
524 select SYS_HAS_CPU_MIPS64_R2
525 select SYS_HAS_CPU_MIPS64_R6
526 select SYS_HAS_CPU_NEVADA
527 select SYS_HAS_CPU_RM7000
528 select SYS_SUPPORTS_32BIT_KERNEL
529 select SYS_SUPPORTS_64BIT_KERNEL
530 select SYS_SUPPORTS_BIG_ENDIAN
531 select SYS_SUPPORTS_HIGHMEM
532 select SYS_SUPPORTS_LITTLE_ENDIAN
533 select SYS_SUPPORTS_MICROMIPS
534 select SYS_SUPPORTS_MIPS_CMP
535 select SYS_SUPPORTS_MIPS_CPS
536 select SYS_SUPPORTS_MIPS16
537 select SYS_SUPPORTS_MULTITHREADING
538 select SYS_SUPPORTS_SMARTMIPS
539 select SYS_SUPPORTS_ZBOOT
540 select SYS_SUPPORTS_RELOCATABLE
543 select ZONE_DMA32 if 64BIT
547 This enables support for the MIPS Technologies Malta evaluation
551 bool "Microchip PIC32 Family"
553 This enables support for the Microchip PIC32 family of platforms.
555 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
559 bool "NEC EMMA2RH Mark-eins board"
563 This enables support for the NEC Electronics Mark-eins boards.
566 bool "NEC VR4100 series based machines"
569 select SYS_HAS_CPU_VR41XX
570 select SYS_SUPPORTS_MIPS16
574 bool "NXP STB220 board"
577 Support for NXP Semiconductors STB220 Development Board.
584 Support for NXP Semiconductors STB225 Development Board.
587 bool "PMC-Sierra MSP chipsets"
590 select DMA_NONCOHERENT
592 select NO_EXCEPT_FILL
594 select SYS_HAS_CPU_MIPS32_R1
595 select SYS_HAS_CPU_MIPS32_R2
596 select SYS_SUPPORTS_32BIT_KERNEL
597 select SYS_SUPPORTS_BIG_ENDIAN
598 select SYS_SUPPORTS_MIPS16
601 select SERIAL_8250_CONSOLE
602 select USB_EHCI_BIG_ENDIAN_MMIO
603 select USB_EHCI_BIG_ENDIAN_DESC
605 This adds support for the PMC-Sierra family of Multi-Service
606 Processor System-On-A-Chips. These parts include a number
607 of integrated peripherals, interfaces and DSPs in addition to
608 a variety of MIPS cores.
611 bool "Ralink based machines"
615 select DMA_NONCOHERENT
618 select SYS_HAS_CPU_MIPS32_R1
619 select SYS_HAS_CPU_MIPS32_R2
620 select SYS_SUPPORTS_32BIT_KERNEL
621 select SYS_SUPPORTS_LITTLE_ENDIAN
622 select SYS_SUPPORTS_MIPS16
623 select SYS_HAS_EARLY_PRINTK
625 select ARCH_HAS_RESET_CONTROLLER
626 select RESET_CONTROLLER
629 bool "SGI IP22 (Indy/Indigo2)"
635 select DEFAULT_SGI_PARTITION
636 select DMA_NONCOHERENT
640 select IP22_CPU_SCACHE
642 select GENERIC_ISA_DMA_SUPPORT_BROKEN
644 select SGI_HAS_INDYDOG
650 select SYS_HAS_CPU_R4X00
651 select SYS_HAS_CPU_R5000
653 # Disable EARLY_PRINTK for now since it leads to overwritten prom
654 # memory during early boot on some machines.
656 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
657 # for a more details discussion
659 # select SYS_HAS_EARLY_PRINTK
660 select SYS_SUPPORTS_32BIT_KERNEL
661 select SYS_SUPPORTS_64BIT_KERNEL
662 select SYS_SUPPORTS_BIG_ENDIAN
663 select MIPS_L1_CACHE_SHIFT_7
665 This are the SGI Indy, Challenge S and Indigo2, as well as certain
666 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
667 that runs on these, say Y here.
670 bool "SGI IP27 (Origin200/2000)"
674 select DEFAULT_SGI_PARTITION
676 select SYS_HAS_EARLY_PRINTK
678 select NR_CPUS_DEFAULT_64
679 select SYS_HAS_CPU_R10000
680 select SYS_SUPPORTS_64BIT_KERNEL
681 select SYS_SUPPORTS_BIG_ENDIAN
682 select SYS_SUPPORTS_NUMA
683 select SYS_SUPPORTS_SMP
684 select MIPS_L1_CACHE_SHIFT_7
686 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
687 workstations. To compile a Linux kernel that runs on these, say Y
691 bool "SGI IP28 (Indigo2 R10k)"
697 select DEFAULT_SGI_PARTITION
698 select DMA_NONCOHERENT
699 select GENERIC_ISA_DMA_SUPPORT_BROKEN
705 select SGI_HAS_INDYDOG
711 select SYS_HAS_CPU_R10000
713 # Disable EARLY_PRINTK for now since it leads to overwritten prom
714 # memory during early boot on some machines.
716 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
717 # for a more details discussion
719 # select SYS_HAS_EARLY_PRINTK
720 select SYS_SUPPORTS_64BIT_KERNEL
721 select SYS_SUPPORTS_BIG_ENDIAN
722 select MIPS_L1_CACHE_SHIFT_7
724 This is the SGI Indigo2 with R10000 processor. To compile a Linux
725 kernel that runs on these, say Y here.
734 select DMA_NONCOHERENT
737 select R5000_CPU_SCACHE
738 select RM7000_CPU_SCACHE
739 select SYS_HAS_CPU_R5000
740 select SYS_HAS_CPU_R10000 if BROKEN
741 select SYS_HAS_CPU_RM7000
742 select SYS_HAS_CPU_NEVADA
743 select SYS_SUPPORTS_64BIT_KERNEL
744 select SYS_SUPPORTS_BIG_ENDIAN
746 If you want this kernel to run on SGI O2 workstation, say Y here.
749 bool "Sibyte BCM91120C-CRhine"
752 select SIBYTE_BCM1120
754 select SYS_HAS_CPU_SB1
755 select SYS_SUPPORTS_BIG_ENDIAN
756 select SYS_SUPPORTS_LITTLE_ENDIAN
759 bool "Sibyte BCM91120x-Carmel"
762 select SIBYTE_BCM1120
764 select SYS_HAS_CPU_SB1
765 select SYS_SUPPORTS_BIG_ENDIAN
766 select SYS_SUPPORTS_LITTLE_ENDIAN
769 bool "Sibyte BCM91125C-CRhone"
772 select SIBYTE_BCM1125
774 select SYS_HAS_CPU_SB1
775 select SYS_SUPPORTS_BIG_ENDIAN
776 select SYS_SUPPORTS_HIGHMEM
777 select SYS_SUPPORTS_LITTLE_ENDIAN
780 bool "Sibyte BCM91125E-Rhone"
783 select SIBYTE_BCM1125H
785 select SYS_HAS_CPU_SB1
786 select SYS_SUPPORTS_BIG_ENDIAN
787 select SYS_SUPPORTS_LITTLE_ENDIAN
790 bool "Sibyte BCM91250A-SWARM"
793 select HAVE_PATA_PLATFORM
796 select SYS_HAS_CPU_SB1
797 select SYS_SUPPORTS_BIG_ENDIAN
798 select SYS_SUPPORTS_HIGHMEM
799 select SYS_SUPPORTS_LITTLE_ENDIAN
800 select ZONE_DMA32 if 64BIT
802 config SIBYTE_LITTLESUR
803 bool "Sibyte BCM91250C2-LittleSur"
806 select HAVE_PATA_PLATFORM
809 select SYS_HAS_CPU_SB1
810 select SYS_SUPPORTS_BIG_ENDIAN
811 select SYS_SUPPORTS_HIGHMEM
812 select SYS_SUPPORTS_LITTLE_ENDIAN
814 config SIBYTE_SENTOSA
815 bool "Sibyte BCM91250E-Sentosa"
820 select SYS_HAS_CPU_SB1
821 select SYS_SUPPORTS_BIG_ENDIAN
822 select SYS_SUPPORTS_LITTLE_ENDIAN
825 bool "Sibyte BCM91480B-BigSur"
828 select NR_CPUS_DEFAULT_4
829 select SIBYTE_BCM1x80
831 select SYS_HAS_CPU_SB1
832 select SYS_SUPPORTS_BIG_ENDIAN
833 select SYS_SUPPORTS_HIGHMEM
834 select SYS_SUPPORTS_LITTLE_ENDIAN
835 select ZONE_DMA32 if 64BIT
838 bool "SNI RM200/300/400"
839 select FW_ARC if CPU_LITTLE_ENDIAN
840 select FW_ARC32 if CPU_LITTLE_ENDIAN
841 select FW_SNIPROM if CPU_BIG_ENDIAN
842 select ARCH_MAY_HAVE_PC_FDC
846 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
847 select DMA_NONCOHERENT
848 select GENERIC_ISA_DMA
849 select HAVE_PCSPKR_PLATFORM
856 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
857 select SYS_HAS_CPU_R4X00
858 select SYS_HAS_CPU_R5000
859 select SYS_HAS_CPU_R10000
860 select R5000_CPU_SCACHE
861 select SYS_HAS_EARLY_PRINTK
862 select SYS_SUPPORTS_32BIT_KERNEL
863 select SYS_SUPPORTS_64BIT_KERNEL
864 select SYS_SUPPORTS_BIG_ENDIAN
865 select SYS_SUPPORTS_HIGHMEM
866 select SYS_SUPPORTS_LITTLE_ENDIAN
868 The SNI RM200/300/400 are MIPS-based machines manufactured by
869 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
870 Technology and now in turn merged with Fujitsu. Say Y here to
871 support this machine type.
874 bool "Toshiba TX39 series based machines"
877 bool "Toshiba TX49 series based machines"
879 config MIKROTIK_RB532
880 bool "Mikrotik RB532 boards"
883 select DMA_NONCOHERENT
886 select SYS_HAS_CPU_MIPS32_R1
887 select SYS_SUPPORTS_32BIT_KERNEL
888 select SYS_SUPPORTS_LITTLE_ENDIAN
892 select MIPS_L1_CACHE_SHIFT_4
894 Support the Mikrotik(tm) RouterBoard 532 series,
895 based on the IDT RC32434 SoC.
897 config CAVIUM_OCTEON_SOC
898 bool "Cavium Networks Octeon SoC based boards"
900 select ARCH_PHYS_ADDR_T_64BIT
902 select SYS_SUPPORTS_64BIT_KERNEL
903 select SYS_SUPPORTS_BIG_ENDIAN
905 select EDAC_ATOMIC_SCRUB
906 select SYS_SUPPORTS_LITTLE_ENDIAN
907 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
908 select SYS_HAS_EARLY_PRINTK
909 select SYS_HAS_CPU_CAVIUM_OCTEON
916 select ARCH_SPARSEMEM_ENABLE
917 select SYS_SUPPORTS_SMP
918 select NR_CPUS_DEFAULT_16
920 select MTD_COMPLEX_MAPPINGS
921 select SYS_SUPPORTS_RELOCATABLE
923 This option supports all of the Octeon reference boards from Cavium
924 Networks. It builds a kernel that dynamically determines the Octeon
925 CPU type and supports all known board reference implementations.
926 Some of the supported boards are:
933 Say Y here for most Octeon reference boards.
936 bool "Netlogic XLR/XLS based systems"
939 select SYS_HAS_CPU_XLR
940 select SYS_SUPPORTS_SMP
943 select SYS_SUPPORTS_32BIT_KERNEL
944 select SYS_SUPPORTS_64BIT_KERNEL
945 select ARCH_PHYS_ADDR_T_64BIT
946 select SYS_SUPPORTS_BIG_ENDIAN
947 select SYS_SUPPORTS_HIGHMEM
949 select NR_CPUS_DEFAULT_32
953 select ZONE_DMA32 if 64BIT
955 select SYS_HAS_EARLY_PRINTK
956 select SYS_SUPPORTS_ZBOOT
957 select SYS_SUPPORTS_ZBOOT_UART16550
959 Support for systems based on Netlogic XLR and XLS processors.
960 Say Y here if you have a XLR or XLS based board.
963 bool "Netlogic XLP based systems"
966 select SYS_HAS_CPU_XLP
967 select SYS_SUPPORTS_SMP
969 select SYS_SUPPORTS_32BIT_KERNEL
970 select SYS_SUPPORTS_64BIT_KERNEL
971 select ARCH_PHYS_ADDR_T_64BIT
973 select SYS_SUPPORTS_BIG_ENDIAN
974 select SYS_SUPPORTS_LITTLE_ENDIAN
975 select SYS_SUPPORTS_HIGHMEM
977 select NR_CPUS_DEFAULT_32
981 select ZONE_DMA32 if 64BIT
983 select SYS_HAS_EARLY_PRINTK
985 select SYS_SUPPORTS_ZBOOT
986 select SYS_SUPPORTS_ZBOOT_UART16550
988 This board is based on Netlogic XLP Processor.
989 Say Y here if you have a XLP based board.
992 bool "Para-Virtualized guest system"
996 select SYS_SUPPORTS_64BIT_KERNEL
997 select SYS_SUPPORTS_32BIT_KERNEL
998 select SYS_SUPPORTS_BIG_ENDIAN
999 select SYS_SUPPORTS_SMP
1000 select NR_CPUS_DEFAULT_4
1001 select SYS_HAS_EARLY_PRINTK
1002 select SYS_HAS_CPU_MIPS32_R2
1003 select SYS_HAS_CPU_MIPS64_R2
1004 select SYS_HAS_CPU_CAVIUM_OCTEON
1006 select SWAP_IO_SPACE
1008 This option supports guest running under ????
1012 source "arch/mips/alchemy/Kconfig"
1013 source "arch/mips/ath25/Kconfig"
1014 source "arch/mips/ath79/Kconfig"
1015 source "arch/mips/bcm47xx/Kconfig"
1016 source "arch/mips/bcm63xx/Kconfig"
1017 source "arch/mips/bmips/Kconfig"
1018 source "arch/mips/generic/Kconfig"
1019 source "arch/mips/jazz/Kconfig"
1020 source "arch/mips/jz4740/Kconfig"
1021 source "arch/mips/lantiq/Kconfig"
1022 source "arch/mips/lasat/Kconfig"
1023 source "arch/mips/pic32/Kconfig"
1024 source "arch/mips/pistachio/Kconfig"
1025 source "arch/mips/pmcs-msp71xx/Kconfig"
1026 source "arch/mips/ralink/Kconfig"
1027 source "arch/mips/sgi-ip27/Kconfig"
1028 source "arch/mips/sibyte/Kconfig"
1029 source "arch/mips/txx9/Kconfig"
1030 source "arch/mips/vr41xx/Kconfig"
1031 source "arch/mips/cavium-octeon/Kconfig"
1032 source "arch/mips/loongson32/Kconfig"
1033 source "arch/mips/loongson64/Kconfig"
1034 source "arch/mips/netlogic/Kconfig"
1035 source "arch/mips/paravirt/Kconfig"
1036 source "arch/mips/xilfpga/Kconfig"
1040 config RWSEM_GENERIC_SPINLOCK
1044 config RWSEM_XCHGADD_ALGORITHM
1047 config GENERIC_HWEIGHT
1051 config GENERIC_CALIBRATE_DELAY
1055 config SCHED_OMIT_FRAME_POINTER
1060 # Select some configuration options automatically based on user selections.
1065 config ARCH_MAY_HAVE_PC_FDC
1101 config MIPS_CLOCK_VSYSCALL
1102 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1111 config ARCH_DMA_ADDR_T_64BIT
1112 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1114 config ARCH_SUPPORTS_UPROBES
1117 config DMA_MAYBE_COHERENT
1118 select DMA_NONCOHERENT
1121 config DMA_PERDEV_COHERENT
1123 select DMA_MAYBE_COHERENT
1128 config DMA_NONCOHERENT
1130 select NEED_DMA_MAP_STATE
1132 config NEED_DMA_MAP_STATE
1135 config SYS_HAS_EARLY_PRINTK
1138 config SYS_SUPPORTS_HOTPLUG_CPU
1141 config MIPS_BONITO64
1156 config NO_IOPORT_MAP
1162 config GENERIC_ISA_DMA
1164 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1167 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1169 select GENERIC_ISA_DMA
1174 config HOLES_IN_ZONE
1177 config SYS_SUPPORTS_RELOCATABLE
1180 Selected if the platform supports relocating the kernel.
1181 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1182 to allow access to command line and entropy sources.
1184 config MIPS_CBPF_JIT
1186 depends on BPF_JIT && HAVE_CBPF_JIT
1188 config MIPS_EBPF_JIT
1190 depends on BPF_JIT && HAVE_EBPF_JIT
1194 # Endianness selection. Sufficiently obscure so many users don't know what to
1195 # answer,so we try hard to limit the available choices. Also the use of a
1196 # choice statement should be more obvious to the user.
1199 prompt "Endianness selection"
1201 Some MIPS machines can be configured for either little or big endian
1202 byte order. These modes require different kernels and a different
1203 Linux distribution. In general there is one preferred byteorder for a
1204 particular system but some systems are just as commonly used in the
1205 one or the other endianness.
1207 config CPU_BIG_ENDIAN
1209 depends on SYS_SUPPORTS_BIG_ENDIAN
1211 config CPU_LITTLE_ENDIAN
1212 bool "Little endian"
1213 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1220 config SYS_SUPPORTS_APM_EMULATION
1223 config SYS_SUPPORTS_BIG_ENDIAN
1226 config SYS_SUPPORTS_LITTLE_ENDIAN
1229 config SYS_SUPPORTS_HUGETLBFS
1231 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1234 config MIPS_HUGE_TLB_SUPPORT
1235 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1252 config PCI_GT64XXX_PCI0
1255 config NO_EXCEPT_FILL
1262 select DMA_NONCOHERENT
1264 select SWAP_IO_SPACE
1265 select SYS_HAS_CPU_R5500
1266 select SYS_SUPPORTS_32BIT_KERNEL
1267 select SYS_SUPPORTS_64BIT_KERNEL
1268 select SYS_SUPPORTS_BIG_ENDIAN
1275 select DMA_NONCOHERENT
1276 select SYS_HAS_CPU_MIPS32_R2
1277 select SYS_SUPPORTS_32BIT_KERNEL
1278 select SYS_SUPPORTS_LITTLE_ENDIAN
1279 select SYS_SUPPORTS_BIG_ENDIAN
1280 select SYS_SUPPORTS_MIPS16
1281 select CPU_MIPSR2_IRQ_VI
1290 config SWAP_IO_SPACE
1293 config SGI_HAS_INDYDOG
1305 config SGI_HAS_ZILOG
1308 config SGI_HAS_I8042
1311 config DEFAULT_SGI_PARTITION
1323 config MIPS_L1_CACHE_SHIFT_4
1326 config MIPS_L1_CACHE_SHIFT_5
1329 config MIPS_L1_CACHE_SHIFT_6
1332 config MIPS_L1_CACHE_SHIFT_7
1335 config MIPS_L1_CACHE_SHIFT
1337 default "7" if MIPS_L1_CACHE_SHIFT_7
1338 default "6" if MIPS_L1_CACHE_SHIFT_6
1339 default "5" if MIPS_L1_CACHE_SHIFT_5
1340 default "4" if MIPS_L1_CACHE_SHIFT_4
1343 config HAVE_STD_PC_SERIAL_PORT
1347 bool "ARC console support"
1348 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1352 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1357 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1366 menu "CPU selection"
1372 config CPU_LOONGSON3
1373 bool "Loongson 3 CPU"
1374 depends on SYS_HAS_CPU_LOONGSON3
1375 select CPU_SUPPORTS_64BIT_KERNEL
1376 select CPU_SUPPORTS_HIGHMEM
1377 select CPU_SUPPORTS_HUGEPAGES
1378 select WEAK_ORDERING
1379 select WEAK_REORDERING_BEYOND_LLSC
1380 select MIPS_PGD_C0_CONTEXT
1381 select MIPS_L1_CACHE_SHIFT_6
1384 The Loongson 3 processor implements the MIPS64R2 instruction
1385 set with many extensions.
1387 config LOONGSON3_ENHANCEMENT
1388 bool "New Loongson 3 CPU Enhancements"
1391 select CPU_HAS_PREFETCH
1392 depends on CPU_LOONGSON3
1394 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1395 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1396 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1397 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1398 Fast TLB refill support, etc.
1400 This option enable those enhancements which are not probed at run
1401 time. If you want a generic kernel to run on all Loongson 3 machines,
1402 please say 'N' here. If you want a high-performance kernel to run on
1403 new Loongson 3 machines only, please say 'Y' here.
1405 config CPU_LOONGSON2E
1407 depends on SYS_HAS_CPU_LOONGSON2E
1408 select CPU_LOONGSON2
1410 The Loongson 2E processor implements the MIPS III instruction set
1411 with many extensions.
1413 It has an internal FPGA northbridge, which is compatible to
1416 config CPU_LOONGSON2F
1418 depends on SYS_HAS_CPU_LOONGSON2F
1419 select CPU_LOONGSON2
1422 The Loongson 2F processor implements the MIPS III instruction set
1423 with many extensions.
1425 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1426 have a similar programming interface with FPGA northbridge used in
1429 config CPU_LOONGSON1B
1431 depends on SYS_HAS_CPU_LOONGSON1B
1432 select CPU_LOONGSON1
1433 select LEDS_GPIO_REGISTER
1435 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1436 release 2 instruction set.
1438 config CPU_LOONGSON1C
1440 depends on SYS_HAS_CPU_LOONGSON1C
1441 select CPU_LOONGSON1
1442 select LEDS_GPIO_REGISTER
1444 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1445 release 2 instruction set.
1447 config CPU_MIPS32_R1
1448 bool "MIPS32 Release 1"
1449 depends on SYS_HAS_CPU_MIPS32_R1
1450 select CPU_HAS_PREFETCH
1451 select CPU_SUPPORTS_32BIT_KERNEL
1452 select CPU_SUPPORTS_HIGHMEM
1454 Choose this option to build a kernel for release 1 or later of the
1455 MIPS32 architecture. Most modern embedded systems with a 32-bit
1456 MIPS processor are based on a MIPS32 processor. If you know the
1457 specific type of processor in your system, choose those that one
1458 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1459 Release 2 of the MIPS32 architecture is available since several
1460 years so chances are you even have a MIPS32 Release 2 processor
1461 in which case you should choose CPU_MIPS32_R2 instead for better
1464 config CPU_MIPS32_R2
1465 bool "MIPS32 Release 2"
1466 depends on SYS_HAS_CPU_MIPS32_R2
1467 select CPU_HAS_PREFETCH
1468 select CPU_SUPPORTS_32BIT_KERNEL
1469 select CPU_SUPPORTS_HIGHMEM
1470 select CPU_SUPPORTS_MSA
1473 Choose this option to build a kernel for release 2 or later of the
1474 MIPS32 architecture. Most modern embedded systems with a 32-bit
1475 MIPS processor are based on a MIPS32 processor. If you know the
1476 specific type of processor in your system, choose those that one
1477 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1479 config CPU_MIPS32_R6
1480 bool "MIPS32 Release 6"
1481 depends on SYS_HAS_CPU_MIPS32_R6
1482 select CPU_HAS_PREFETCH
1483 select CPU_SUPPORTS_32BIT_KERNEL
1484 select CPU_SUPPORTS_HIGHMEM
1485 select CPU_SUPPORTS_MSA
1488 select MIPS_O32_FP64_SUPPORT
1490 Choose this option to build a kernel for release 6 or later of the
1491 MIPS32 architecture. New MIPS processors, starting with the Warrior
1492 family, are based on a MIPS32r6 processor. If you own an older
1493 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1495 config CPU_MIPS64_R1
1496 bool "MIPS64 Release 1"
1497 depends on SYS_HAS_CPU_MIPS64_R1
1498 select CPU_HAS_PREFETCH
1499 select CPU_SUPPORTS_32BIT_KERNEL
1500 select CPU_SUPPORTS_64BIT_KERNEL
1501 select CPU_SUPPORTS_HIGHMEM
1502 select CPU_SUPPORTS_HUGEPAGES
1504 Choose this option to build a kernel for release 1 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.
1509 Release 2 of the MIPS64 architecture is available since several
1510 years so chances are you even have a MIPS64 Release 2 processor
1511 in which case you should choose CPU_MIPS64_R2 instead for better
1514 config CPU_MIPS64_R2
1515 bool "MIPS64 Release 2"
1516 depends on SYS_HAS_CPU_MIPS64_R2
1517 select CPU_HAS_PREFETCH
1518 select CPU_SUPPORTS_32BIT_KERNEL
1519 select CPU_SUPPORTS_64BIT_KERNEL
1520 select CPU_SUPPORTS_HIGHMEM
1521 select CPU_SUPPORTS_HUGEPAGES
1522 select CPU_SUPPORTS_MSA
1525 Choose this option to build a kernel for release 2 or later of the
1526 MIPS64 architecture. Many modern embedded systems with a 64-bit
1527 MIPS processor are based on a MIPS64 processor. If you know the
1528 specific type of processor in your system, choose those that one
1529 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1531 config CPU_MIPS64_R6
1532 bool "MIPS64 Release 6"
1533 depends on SYS_HAS_CPU_MIPS64_R6
1534 select CPU_HAS_PREFETCH
1535 select CPU_SUPPORTS_32BIT_KERNEL
1536 select CPU_SUPPORTS_64BIT_KERNEL
1537 select CPU_SUPPORTS_HIGHMEM
1538 select CPU_SUPPORTS_MSA
1540 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1543 Choose this option to build a kernel for release 6 or later of the
1544 MIPS64 architecture. New MIPS processors, starting with the Warrior
1545 family, are based on a MIPS64r6 processor. If you own an older
1546 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1550 depends on SYS_HAS_CPU_R3000
1552 select CPU_SUPPORTS_32BIT_KERNEL
1553 select CPU_SUPPORTS_HIGHMEM
1555 Please make sure to pick the right CPU type. Linux/MIPS is not
1556 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1557 *not* work on R4000 machines and vice versa. However, since most
1558 of the supported machines have an R4000 (or similar) CPU, R4x00
1559 might be a safe bet. If the resulting kernel does not work,
1560 try to recompile with R3000.
1564 depends on SYS_HAS_CPU_TX39XX
1565 select CPU_SUPPORTS_32BIT_KERNEL
1569 depends on SYS_HAS_CPU_VR41XX
1570 select CPU_SUPPORTS_32BIT_KERNEL
1571 select CPU_SUPPORTS_64BIT_KERNEL
1573 The options selects support for the NEC VR4100 series of processors.
1574 Only choose this option if you have one of these processors as a
1575 kernel built with this option will not run on any other type of
1576 processor or vice versa.
1580 depends on SYS_HAS_CPU_R4300
1581 select CPU_SUPPORTS_32BIT_KERNEL
1582 select CPU_SUPPORTS_64BIT_KERNEL
1584 MIPS Technologies R4300-series processors.
1588 depends on SYS_HAS_CPU_R4X00
1589 select CPU_SUPPORTS_32BIT_KERNEL
1590 select CPU_SUPPORTS_64BIT_KERNEL
1591 select CPU_SUPPORTS_HUGEPAGES
1593 MIPS Technologies R4000-series processors other than 4300, including
1594 the R4000, R4400, R4600, and 4700.
1598 depends on SYS_HAS_CPU_TX49XX
1599 select CPU_HAS_PREFETCH
1600 select CPU_SUPPORTS_32BIT_KERNEL
1601 select CPU_SUPPORTS_64BIT_KERNEL
1602 select CPU_SUPPORTS_HUGEPAGES
1606 depends on SYS_HAS_CPU_R5000
1607 select CPU_SUPPORTS_32BIT_KERNEL
1608 select CPU_SUPPORTS_64BIT_KERNEL
1609 select CPU_SUPPORTS_HUGEPAGES
1611 MIPS Technologies R5000-series processors other than the Nevada.
1615 depends on SYS_HAS_CPU_R5432
1616 select CPU_SUPPORTS_32BIT_KERNEL
1617 select CPU_SUPPORTS_64BIT_KERNEL
1618 select CPU_SUPPORTS_HUGEPAGES
1622 depends on SYS_HAS_CPU_R5500
1623 select CPU_SUPPORTS_32BIT_KERNEL
1624 select CPU_SUPPORTS_64BIT_KERNEL
1625 select CPU_SUPPORTS_HUGEPAGES
1627 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1632 depends on SYS_HAS_CPU_NEVADA
1633 select CPU_SUPPORTS_32BIT_KERNEL
1634 select CPU_SUPPORTS_64BIT_KERNEL
1635 select CPU_SUPPORTS_HUGEPAGES
1637 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1641 depends on SYS_HAS_CPU_R8000
1642 select CPU_HAS_PREFETCH
1643 select CPU_SUPPORTS_64BIT_KERNEL
1645 MIPS Technologies R8000 processors. Note these processors are
1646 uncommon and the support for them is incomplete.
1650 depends on SYS_HAS_CPU_R10000
1651 select CPU_HAS_PREFETCH
1652 select CPU_SUPPORTS_32BIT_KERNEL
1653 select CPU_SUPPORTS_64BIT_KERNEL
1654 select CPU_SUPPORTS_HIGHMEM
1655 select CPU_SUPPORTS_HUGEPAGES
1657 MIPS Technologies R10000-series processors.
1661 depends on SYS_HAS_CPU_RM7000
1662 select CPU_HAS_PREFETCH
1663 select CPU_SUPPORTS_32BIT_KERNEL
1664 select CPU_SUPPORTS_64BIT_KERNEL
1665 select CPU_SUPPORTS_HIGHMEM
1666 select CPU_SUPPORTS_HUGEPAGES
1670 depends on SYS_HAS_CPU_SB1
1671 select CPU_SUPPORTS_32BIT_KERNEL
1672 select CPU_SUPPORTS_64BIT_KERNEL
1673 select CPU_SUPPORTS_HIGHMEM
1674 select CPU_SUPPORTS_HUGEPAGES
1675 select WEAK_ORDERING
1677 config CPU_CAVIUM_OCTEON
1678 bool "Cavium Octeon processor"
1679 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1680 select CPU_HAS_PREFETCH
1681 select CPU_SUPPORTS_64BIT_KERNEL
1682 select WEAK_ORDERING
1683 select CPU_SUPPORTS_HIGHMEM
1684 select CPU_SUPPORTS_HUGEPAGES
1685 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1686 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1687 select MIPS_L1_CACHE_SHIFT_7
1690 The Cavium Octeon processor is a highly integrated chip containing
1691 many ethernet hardware widgets for networking tasks. The processor
1692 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1693 Full details can be found at http://www.caviumnetworks.com.
1696 bool "Broadcom BMIPS"
1697 depends on SYS_HAS_CPU_BMIPS
1699 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1700 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1701 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1702 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1703 select CPU_SUPPORTS_32BIT_KERNEL
1704 select DMA_NONCOHERENT
1706 select SWAP_IO_SPACE
1707 select WEAK_ORDERING
1708 select CPU_SUPPORTS_HIGHMEM
1709 select CPU_HAS_PREFETCH
1710 select CPU_SUPPORTS_CPUFREQ
1711 select MIPS_EXTERNAL_TIMER
1713 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1716 bool "Netlogic XLR SoC"
1717 depends on SYS_HAS_CPU_XLR
1718 select CPU_SUPPORTS_32BIT_KERNEL
1719 select CPU_SUPPORTS_64BIT_KERNEL
1720 select CPU_SUPPORTS_HIGHMEM
1721 select CPU_SUPPORTS_HUGEPAGES
1722 select WEAK_ORDERING
1723 select WEAK_REORDERING_BEYOND_LLSC
1725 Netlogic Microsystems XLR/XLS processors.
1728 bool "Netlogic XLP SoC"
1729 depends on SYS_HAS_CPU_XLP
1730 select CPU_SUPPORTS_32BIT_KERNEL
1731 select CPU_SUPPORTS_64BIT_KERNEL
1732 select CPU_SUPPORTS_HIGHMEM
1733 select WEAK_ORDERING
1734 select WEAK_REORDERING_BEYOND_LLSC
1735 select CPU_HAS_PREFETCH
1737 select CPU_SUPPORTS_HUGEPAGES
1738 select MIPS_ASID_BITS_VARIABLE
1740 Netlogic Microsystems XLP processors.
1743 config CPU_MIPS32_3_5_FEATURES
1744 bool "MIPS32 Release 3.5 Features"
1745 depends on SYS_HAS_CPU_MIPS32_R3_5
1746 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1748 Choose this option to build a kernel for release 2 or later of the
1749 MIPS32 architecture including features from the 3.5 release such as
1750 support for Enhanced Virtual Addressing (EVA).
1752 config CPU_MIPS32_3_5_EVA
1753 bool "Enhanced Virtual Addressing (EVA)"
1754 depends on CPU_MIPS32_3_5_FEATURES
1758 Choose this option if you want to enable the Enhanced Virtual
1759 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1760 One of its primary benefits is an increase in the maximum size
1761 of lowmem (up to 3GB). If unsure, say 'N' here.
1763 config CPU_MIPS32_R5_FEATURES
1764 bool "MIPS32 Release 5 Features"
1765 depends on SYS_HAS_CPU_MIPS32_R5
1766 depends on CPU_MIPS32_R2
1768 Choose this option to build a kernel for release 2 or later of the
1769 MIPS32 architecture including features from release 5 such as
1770 support for Extended Physical Addressing (XPA).
1772 config CPU_MIPS32_R5_XPA
1773 bool "Extended Physical Addressing (XPA)"
1774 depends on CPU_MIPS32_R5_FEATURES
1776 depends on !PAGE_SIZE_4KB
1777 depends on SYS_SUPPORTS_HIGHMEM
1780 select ARCH_PHYS_ADDR_T_64BIT
1783 Choose this option if you want to enable the Extended Physical
1784 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1785 benefit is to increase physical addressing equal to or greater
1786 than 40 bits. Note that this has the side effect of turning on
1787 64-bit addressing which in turn makes the PTEs 64-bit in size.
1788 If unsure, say 'N' here.
1791 config CPU_NOP_WORKAROUNDS
1794 config CPU_JUMP_WORKAROUNDS
1797 config CPU_LOONGSON2F_WORKAROUNDS
1798 bool "Loongson 2F Workarounds"
1800 select CPU_NOP_WORKAROUNDS
1801 select CPU_JUMP_WORKAROUNDS
1803 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1804 require workarounds. Without workarounds the system may hang
1805 unexpectedly. For more information please refer to the gas
1806 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1808 Loongson 2F03 and later have fixed these issues and no workarounds
1809 are needed. The workarounds have no significant side effect on them
1810 but may decrease the performance of the system so this option should
1811 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1814 If unsure, please say Y.
1815 endif # CPU_LOONGSON2F
1817 config SYS_SUPPORTS_ZBOOT
1819 select HAVE_KERNEL_GZIP
1820 select HAVE_KERNEL_BZIP2
1821 select HAVE_KERNEL_LZ4
1822 select HAVE_KERNEL_LZMA
1823 select HAVE_KERNEL_LZO
1824 select HAVE_KERNEL_XZ
1826 config SYS_SUPPORTS_ZBOOT_UART16550
1828 select SYS_SUPPORTS_ZBOOT
1830 config SYS_SUPPORTS_ZBOOT_UART_PROM
1832 select SYS_SUPPORTS_ZBOOT
1834 config CPU_LOONGSON2
1836 select CPU_SUPPORTS_32BIT_KERNEL
1837 select CPU_SUPPORTS_64BIT_KERNEL
1838 select CPU_SUPPORTS_HIGHMEM
1839 select CPU_SUPPORTS_HUGEPAGES
1841 config CPU_LOONGSON1
1845 select CPU_HAS_PREFETCH
1846 select CPU_SUPPORTS_32BIT_KERNEL
1847 select CPU_SUPPORTS_HIGHMEM
1848 select CPU_SUPPORTS_CPUFREQ
1850 config CPU_BMIPS32_3300
1851 select SMP_UP if SMP
1854 config CPU_BMIPS4350
1856 select SYS_SUPPORTS_SMP
1857 select SYS_SUPPORTS_HOTPLUG_CPU
1859 config CPU_BMIPS4380
1861 select MIPS_L1_CACHE_SHIFT_6
1862 select SYS_SUPPORTS_SMP
1863 select SYS_SUPPORTS_HOTPLUG_CPU
1866 config CPU_BMIPS5000
1868 select MIPS_CPU_SCACHE
1869 select MIPS_L1_CACHE_SHIFT_7
1870 select SYS_SUPPORTS_SMP
1871 select SYS_SUPPORTS_HOTPLUG_CPU
1874 config SYS_HAS_CPU_LOONGSON3
1876 select CPU_SUPPORTS_CPUFREQ
1879 config SYS_HAS_CPU_LOONGSON2E
1882 config SYS_HAS_CPU_LOONGSON2F
1884 select CPU_SUPPORTS_CPUFREQ
1885 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1886 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1888 config SYS_HAS_CPU_LOONGSON1B
1891 config SYS_HAS_CPU_LOONGSON1C
1894 config SYS_HAS_CPU_MIPS32_R1
1897 config SYS_HAS_CPU_MIPS32_R2
1900 config SYS_HAS_CPU_MIPS32_R3_5
1903 config SYS_HAS_CPU_MIPS32_R5
1906 config SYS_HAS_CPU_MIPS32_R6
1909 config SYS_HAS_CPU_MIPS64_R1
1912 config SYS_HAS_CPU_MIPS64_R2
1915 config SYS_HAS_CPU_MIPS64_R6
1918 config SYS_HAS_CPU_R3000
1921 config SYS_HAS_CPU_TX39XX
1924 config SYS_HAS_CPU_VR41XX
1927 config SYS_HAS_CPU_R4300
1930 config SYS_HAS_CPU_R4X00
1933 config SYS_HAS_CPU_TX49XX
1936 config SYS_HAS_CPU_R5000
1939 config SYS_HAS_CPU_R5432
1942 config SYS_HAS_CPU_R5500
1945 config SYS_HAS_CPU_NEVADA
1948 config SYS_HAS_CPU_R8000
1951 config SYS_HAS_CPU_R10000
1954 config SYS_HAS_CPU_RM7000
1957 config SYS_HAS_CPU_SB1
1960 config SYS_HAS_CPU_CAVIUM_OCTEON
1963 config SYS_HAS_CPU_BMIPS
1966 config SYS_HAS_CPU_BMIPS32_3300
1968 select SYS_HAS_CPU_BMIPS
1970 config SYS_HAS_CPU_BMIPS4350
1972 select SYS_HAS_CPU_BMIPS
1974 config SYS_HAS_CPU_BMIPS4380
1976 select SYS_HAS_CPU_BMIPS
1978 config SYS_HAS_CPU_BMIPS5000
1980 select SYS_HAS_CPU_BMIPS
1982 config SYS_HAS_CPU_XLR
1985 config SYS_HAS_CPU_XLP
1988 config MIPS_MALTA_PM
1989 depends on MIPS_MALTA
1995 # CPU may reorder R->R, R->W, W->R, W->W
1996 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1998 config WEAK_ORDERING
2002 # CPU may reorder reads and writes beyond LL/SC
2003 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2005 config WEAK_REORDERING_BEYOND_LLSC
2010 # These two indicate any level of the MIPS32 and MIPS64 architecture
2014 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2018 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2021 # These two indicate the revision of the architecture, either Release 1 or Release 2
2025 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2029 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2035 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2037 select HAVE_ARCH_BITREVERSE
2038 select MIPS_ASID_BITS_VARIABLE
2047 config SYS_SUPPORTS_32BIT_KERNEL
2049 config SYS_SUPPORTS_64BIT_KERNEL
2051 config CPU_SUPPORTS_32BIT_KERNEL
2053 config CPU_SUPPORTS_64BIT_KERNEL
2055 config CPU_SUPPORTS_CPUFREQ
2057 config CPU_SUPPORTS_ADDRWINCFG
2059 config CPU_SUPPORTS_HUGEPAGES
2061 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2063 config MIPS_PGD_C0_CONTEXT
2065 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2068 # Set to y for ptrace access to watch registers.
2070 config HARDWARE_WATCHPOINTS
2072 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2077 prompt "Kernel code model"
2079 You should only select this option if you have a workload that
2080 actually benefits from 64-bit processing or if your machine has
2081 large memory. You will only be presented a single option in this
2082 menu if your system does not support both 32-bit and 64-bit kernels.
2085 bool "32-bit kernel"
2086 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2089 Select this option if you want to build a 32-bit kernel.
2092 bool "64-bit kernel"
2093 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2095 Select this option if you want to build a 64-bit kernel.
2100 bool "KVM Guest Kernel"
2101 depends on BROKEN_ON_SMP
2103 Select this option if building a guest kernel for KVM (Trap & Emulate)
2106 config KVM_GUEST_TIMER_FREQ
2107 int "Count/Compare Timer Frequency (MHz)"
2108 depends on KVM_GUEST
2111 Set this to non-zero if building a guest kernel for KVM to skip RTC
2112 emulation when determining guest CPU Frequency. Instead, the guest's
2113 timer frequency is specified directly.
2115 config MIPS_VA_BITS_48
2116 bool "48 bits virtual memory"
2119 Support a maximum at least 48 bits of application virtual
2120 memory. Default is 40 bits or less, depending on the CPU.
2121 For page sizes 16k and above, this option results in a small
2122 memory overhead for page tables. For 4k page size, a fourth
2123 level of page tables is added which imposes both a memory
2124 overhead as well as slower TLB fault handling.
2129 prompt "Kernel page size"
2130 default PAGE_SIZE_4KB
2132 config PAGE_SIZE_4KB
2134 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2136 This option select the standard 4kB Linux page size. On some
2137 R3000-family processors this is the only available page size. Using
2138 4kB page size will minimize memory consumption and is therefore
2139 recommended for low memory systems.
2141 config PAGE_SIZE_8KB
2143 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2144 depends on !MIPS_VA_BITS_48
2146 Using 8kB page size will result in higher performance kernel at
2147 the price of higher memory consumption. This option is available
2148 only on R8000 and cnMIPS processors. Note that you will need a
2149 suitable Linux distribution to support this.
2151 config PAGE_SIZE_16KB
2153 depends on !CPU_R3000 && !CPU_TX39XX
2155 Using 16kB page size will result in higher performance kernel at
2156 the price of higher memory consumption. This option is available on
2157 all non-R3000 family processors. Note that you will need a suitable
2158 Linux distribution to support this.
2160 config PAGE_SIZE_32KB
2162 depends on CPU_CAVIUM_OCTEON
2163 depends on !MIPS_VA_BITS_48
2165 Using 32kB page size will result in higher performance kernel at
2166 the price of higher memory consumption. This option is available
2167 only on cnMIPS cores. Note that you will need a suitable Linux
2168 distribution to support this.
2170 config PAGE_SIZE_64KB
2172 depends on !CPU_R3000 && !CPU_TX39XX
2174 Using 64kB page size will result in higher performance kernel at
2175 the price of higher memory consumption. This option is available on
2176 all non-R3000 family processor. Not that at the time of this
2177 writing this option is still high experimental.
2181 config FORCE_MAX_ZONEORDER
2182 int "Maximum zone order"
2183 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2184 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2185 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2186 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2187 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2188 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2192 The kernel memory allocator divides physically contiguous memory
2193 blocks into "zones", where each zone is a power of two number of
2194 pages. This option selects the largest power of two that the kernel
2195 keeps in the memory allocator. If you need to allocate very large
2196 blocks of physically contiguous memory, then you may need to
2197 increase this value.
2199 This config option is actually maximum order plus one. For example,
2200 a value of 11 means that the largest free memory block is 2^10 pages.
2202 The page size is not necessarily 4KB. Keep this in mind
2203 when choosing a value for this option.
2208 config IP22_CPU_SCACHE
2213 # Support for a MIPS32 / MIPS64 style S-caches
2215 config MIPS_CPU_SCACHE
2219 config R5000_CPU_SCACHE
2223 config RM7000_CPU_SCACHE
2227 config SIBYTE_DMA_PAGEOPS
2228 bool "Use DMA to clear/copy pages"
2231 Instead of using the CPU to zero and copy pages, use a Data Mover
2232 channel. These DMA channels are otherwise unused by the standard
2233 SiByte Linux port. Seems to give a small performance benefit.
2235 config CPU_HAS_PREFETCH
2238 config CPU_GENERIC_DUMP_TLB
2240 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2244 default y if !(CPU_R3000 || CPU_TX39XX)
2246 config CPU_R4K_CACHE_TLB
2248 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2251 bool "MIPS MT SMP support (1 TC on each available VPE)"
2253 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2254 select CPU_MIPSR2_IRQ_VI
2255 select CPU_MIPSR2_IRQ_EI
2260 select SYS_SUPPORTS_SMP
2261 select SYS_SUPPORTS_SCHED_SMT
2262 select MIPS_PERF_SHARED_TC_COUNTERS
2264 This is a kernel model which is known as SMVP. This is supported
2265 on cores with the MT ASE and uses the available VPEs to implement
2266 virtual processors which supports SMP. This is equivalent to the
2267 Intel Hyperthreading feature. For further information go to
2268 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2274 bool "SMT (multithreading) scheduler support"
2275 depends on SYS_SUPPORTS_SCHED_SMT
2278 SMT scheduler support improves the CPU scheduler's decision making
2279 when dealing with MIPS MT enabled cores at a cost of slightly
2280 increased overhead in some places. If unsure say N here.
2282 config SYS_SUPPORTS_SCHED_SMT
2285 config SYS_SUPPORTS_MULTITHREADING
2288 config MIPS_MT_FPAFF
2289 bool "Dynamic FPU affinity for FP-intensive threads"
2291 depends on MIPS_MT_SMP
2293 config MIPSR2_TO_R6_EMULATOR
2294 bool "MIPS R2-to-R6 emulator"
2295 depends on CPU_MIPSR6
2298 Choose this option if you want to run non-R6 MIPS userland code.
2299 Even if you say 'Y' here, the emulator will still be disabled by
2300 default. You can enable it using the 'mipsr2emu' kernel option.
2301 The only reason this is a build-time option is to save ~14K from the
2304 config MIPS_VPE_LOADER
2305 bool "VPE loader support."
2306 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2307 select CPU_MIPSR2_IRQ_VI
2308 select CPU_MIPSR2_IRQ_EI
2311 Includes a loader for loading an elf relocatable object
2312 onto another VPE and running it.
2314 config MIPS_VPE_LOADER_CMP
2317 depends on MIPS_VPE_LOADER && MIPS_CMP
2319 config MIPS_VPE_LOADER_MT
2322 depends on MIPS_VPE_LOADER && !MIPS_CMP
2324 config MIPS_VPE_LOADER_TOM
2325 bool "Load VPE program into memory hidden from linux"
2326 depends on MIPS_VPE_LOADER
2329 The loader can use memory that is present but has been hidden from
2330 Linux using the kernel command line option "mem=xxMB". It's up to
2331 you to ensure the amount you put in the option and the space your
2332 program requires is less or equal to the amount physically present.
2334 config MIPS_VPE_APSP_API
2335 bool "Enable support for AP/SP API (RTLX)"
2336 depends on MIPS_VPE_LOADER
2339 config MIPS_VPE_APSP_API_CMP
2342 depends on MIPS_VPE_APSP_API && MIPS_CMP
2344 config MIPS_VPE_APSP_API_MT
2347 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2350 bool "MIPS CMP framework support (DEPRECATED)"
2351 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2354 select SYS_SUPPORTS_SMP
2355 select WEAK_ORDERING
2358 Select this if you are using a bootloader which implements the "CMP
2359 framework" protocol (ie. YAMON) and want your kernel to make use of
2360 its ability to start secondary CPUs.
2362 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2366 bool "MIPS Coherent Processing System support"
2367 depends on SYS_SUPPORTS_MIPS_CPS
2369 select MIPS_CPS_PM if HOTPLUG_CPU
2371 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2372 select SYS_SUPPORTS_HOTPLUG_CPU
2373 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2374 select SYS_SUPPORTS_SMP
2375 select WEAK_ORDERING
2377 Select this if you wish to run an SMP kernel across multiple cores
2378 within a MIPS Coherent Processing System. When this option is
2379 enabled the kernel will probe for other cores and boot them with
2380 no external assistance. It is safe to enable this when hardware
2381 support is unavailable.
2394 config SB1_PASS_2_WORKAROUNDS
2396 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2399 config SB1_PASS_2_1_WORKAROUNDS
2401 depends on CPU_SB1 && CPU_SB1_PASS_2
2405 config ARCH_PHYS_ADDR_T_64BIT
2409 prompt "SmartMIPS or microMIPS ASE support"
2411 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2414 Select this if you want neither microMIPS nor SmartMIPS support
2416 config CPU_HAS_SMARTMIPS
2417 depends on SYS_SUPPORTS_SMARTMIPS
2420 SmartMIPS is a extension of the MIPS32 architecture aimed at
2421 increased security at both hardware and software level for
2422 smartcards. Enabling this option will allow proper use of the
2423 SmartMIPS instructions by Linux applications. However a kernel with
2424 this option will not work on a MIPS core without SmartMIPS core. If
2425 you don't know you probably don't have SmartMIPS and should say N
2428 config CPU_MICROMIPS
2429 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2432 When this option is enabled the kernel will be built using the
2438 bool "Support for the MIPS SIMD Architecture"
2439 depends on CPU_SUPPORTS_MSA
2440 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2442 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2443 and a set of SIMD instructions to operate on them. When this option
2444 is enabled the kernel will support allocating & switching MSA
2445 vector register contexts. If you know that your kernel will only be
2446 running on CPUs which do not support MSA or that your userland will
2447 not be making use of it then you may wish to say N here to reduce
2448 the size & complexity of your kernel.
2462 # Vectored interrupt mode is an R2 feature
2464 config CPU_MIPSR2_IRQ_VI
2468 # Extended interrupt mode is an R2 feature
2470 config CPU_MIPSR2_IRQ_EI
2475 depends on !CPU_R3000
2481 config CPU_DADDI_WORKAROUNDS
2484 config CPU_R4000_WORKAROUNDS
2486 select CPU_R4400_WORKAROUNDS
2488 config CPU_R4400_WORKAROUNDS
2491 config MIPS_ASID_SHIFT
2493 default 6 if CPU_R3000 || CPU_TX39XX
2494 default 4 if CPU_R8000
2497 config MIPS_ASID_BITS
2499 default 0 if MIPS_ASID_BITS_VARIABLE
2500 default 6 if CPU_R3000 || CPU_TX39XX
2503 config MIPS_ASID_BITS_VARIABLE
2507 # - Highmem only makes sense for the 32-bit kernel.
2508 # - The current highmem code will only work properly on physically indexed
2509 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2510 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2511 # moment we protect the user and offer the highmem option only on machines
2512 # where it's known to be safe. This will not offer highmem on a few systems
2513 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2514 # indexed CPUs but we're playing safe.
2515 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2516 # know they might have memory configurations that could make use of highmem
2520 bool "High Memory Support"
2521 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2523 config CPU_SUPPORTS_HIGHMEM
2526 config SYS_SUPPORTS_HIGHMEM
2529 config SYS_SUPPORTS_SMARTMIPS
2532 config SYS_SUPPORTS_MICROMIPS
2535 config SYS_SUPPORTS_MIPS16
2538 This option must be set if a kernel might be executed on a MIPS16-
2539 enabled CPU even if MIPS16 is not actually being used. In other
2540 words, it makes the kernel MIPS16-tolerant.
2542 config CPU_SUPPORTS_MSA
2545 config ARCH_FLATMEM_ENABLE
2547 depends on !NUMA && !CPU_LOONGSON2
2549 config ARCH_DISCONTIGMEM_ENABLE
2551 default y if SGI_IP27
2553 Say Y to support efficient handling of discontiguous physical memory,
2554 for architectures which are either NUMA (Non-Uniform Memory Access)
2555 or have huge holes in the physical address space for other reasons.
2556 See <file:Documentation/vm/numa> for more.
2558 config ARCH_SPARSEMEM_ENABLE
2560 select SPARSEMEM_STATIC
2564 depends on SYS_SUPPORTS_NUMA
2566 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2567 Access). This option improves performance on systems with more
2568 than two nodes; on two node systems it is generally better to
2569 leave it disabled; on single node systems disable this option
2572 config SYS_SUPPORTS_NUMA
2576 bool "Relocatable kernel"
2577 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2579 This builds a kernel image that retains relocation information
2580 so it can be loaded someplace besides the default 1MB.
2581 The relocations make the kernel binary about 15% larger,
2582 but are discarded at runtime
2584 config RELOCATION_TABLE_SIZE
2585 hex "Relocation table size"
2586 depends on RELOCATABLE
2587 range 0x0 0x01000000
2588 default "0x00100000"
2590 A table of relocation data will be appended to the kernel binary
2591 and parsed at boot to fix up the relocated kernel.
2593 This option allows the amount of space reserved for the table to be
2594 adjusted, although the default of 1Mb should be ok in most cases.
2596 The build will fail and a valid size suggested if this is too small.
2598 If unsure, leave at the default value.
2600 config RANDOMIZE_BASE
2601 bool "Randomize the address of the kernel image"
2602 depends on RELOCATABLE
2604 Randomizes the physical and virtual address at which the
2605 kernel image is loaded, as a security feature that
2606 deters exploit attempts relying on knowledge of the location
2607 of kernel internals.
2609 Entropy is generated using any coprocessor 0 registers available.
2611 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2615 config RANDOMIZE_BASE_MAX_OFFSET
2616 hex "Maximum kASLR offset" if EXPERT
2617 depends on RANDOMIZE_BASE
2618 range 0x0 0x40000000 if EVA || 64BIT
2619 range 0x0 0x08000000
2620 default "0x01000000"
2622 When kASLR is active, this provides the maximum offset that will
2623 be applied to the kernel image. It should be set according to the
2624 amount of physical RAM available in the target system minus
2625 PHYSICAL_START and must be a power of 2.
2627 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2628 EVA or 64-bit. The default is 16Mb.
2633 depends on NEED_MULTIPLE_NODES
2635 config HW_PERF_EVENTS
2636 bool "Enable hardware performance counter support for perf events"
2637 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2640 Enable hardware performance counter support for perf events. If
2641 disabled, perf events will use software events only.
2646 bool "Multi-Processing support"
2647 depends on SYS_SUPPORTS_SMP
2649 This enables support for systems with more than one CPU. If you have
2650 a system with only one CPU, say N. If you have a system with more
2651 than one CPU, say Y.
2653 If you say N here, the kernel will run on uni- and multiprocessor
2654 machines, but will use only one CPU of a multiprocessor machine. If
2655 you say Y here, the kernel will run on many, but not all,
2656 uniprocessor machines. On a uniprocessor machine, the kernel
2657 will run faster if you say N here.
2659 People using multiprocessor machines who say Y here should also say
2660 Y to "Enhanced Real Time Clock Support", below.
2662 See also the SMP-HOWTO available at
2663 <http://www.tldp.org/docs.html#howto>.
2665 If you don't know what to do here, say N.
2668 bool "Support for hot-pluggable CPUs"
2669 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2671 Say Y here to allow turning CPUs off and on. CPUs can be
2672 controlled through /sys/devices/system/cpu.
2673 (Note: power management support will enable this option
2674 automatically on SMP systems. )
2675 Say N if you want to disable CPU hotplug.
2680 config SYS_SUPPORTS_MIPS_CMP
2683 config SYS_SUPPORTS_MIPS_CPS
2686 config SYS_SUPPORTS_SMP
2689 config NR_CPUS_DEFAULT_4
2692 config NR_CPUS_DEFAULT_8
2695 config NR_CPUS_DEFAULT_16
2698 config NR_CPUS_DEFAULT_32
2701 config NR_CPUS_DEFAULT_64
2705 int "Maximum number of CPUs (2-256)"
2708 default "4" if NR_CPUS_DEFAULT_4
2709 default "8" if NR_CPUS_DEFAULT_8
2710 default "16" if NR_CPUS_DEFAULT_16
2711 default "32" if NR_CPUS_DEFAULT_32
2712 default "64" if NR_CPUS_DEFAULT_64
2714 This allows you to specify the maximum number of CPUs which this
2715 kernel will support. The maximum supported value is 32 for 32-bit
2716 kernel and 64 for 64-bit kernels; the minimum value which makes
2717 sense is 1 for Qemu (useful only for kernel debugging purposes)
2718 and 2 for all others.
2720 This is purely to save memory - each supported CPU adds
2721 approximately eight kilobytes to the kernel image. For best
2722 performance should round up your number of processors to the next
2725 config MIPS_PERF_SHARED_TC_COUNTERS
2729 # Timer Interrupt Frequency Configuration
2733 prompt "Timer frequency"
2736 Allows the configuration of the timer frequency.
2739 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2742 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2745 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2748 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2751 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2754 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2757 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2760 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2764 config SYS_SUPPORTS_24HZ
2767 config SYS_SUPPORTS_48HZ
2770 config SYS_SUPPORTS_100HZ
2773 config SYS_SUPPORTS_128HZ
2776 config SYS_SUPPORTS_250HZ
2779 config SYS_SUPPORTS_256HZ
2782 config SYS_SUPPORTS_1000HZ
2785 config SYS_SUPPORTS_1024HZ
2788 config SYS_SUPPORTS_ARBIT_HZ
2790 default y if !SYS_SUPPORTS_24HZ && \
2791 !SYS_SUPPORTS_48HZ && \
2792 !SYS_SUPPORTS_100HZ && \
2793 !SYS_SUPPORTS_128HZ && \
2794 !SYS_SUPPORTS_250HZ && \
2795 !SYS_SUPPORTS_256HZ && \
2796 !SYS_SUPPORTS_1000HZ && \
2797 !SYS_SUPPORTS_1024HZ
2803 default 100 if HZ_100
2804 default 128 if HZ_128
2805 default 250 if HZ_250
2806 default 256 if HZ_256
2807 default 1000 if HZ_1000
2808 default 1024 if HZ_1024
2811 def_bool HIGH_RES_TIMERS
2813 source "kernel/Kconfig.preempt"
2816 bool "Kexec system call"
2819 kexec is a system call that implements the ability to shutdown your
2820 current kernel, and to start another kernel. It is like a reboot
2821 but it is independent of the system firmware. And like a reboot
2822 you can start any kernel with it, not just Linux.
2824 The name comes from the similarity to the exec system call.
2826 It is an ongoing process to be certain the hardware in a machine
2827 is properly shutdown, so do not be surprised if this code does not
2828 initially work for you. As of this writing the exact hardware
2829 interface is strongly in flux, so no good recommendation can be
2833 bool "Kernel crash dumps"
2835 Generate crash dump after being started by kexec.
2836 This should be normally only set in special crash dump kernels
2837 which are loaded in the main kernel with kexec-tools into
2838 a specially reserved region and then later executed after
2839 a crash by kdump/kexec. The crash dump kernel must be compiled
2840 to a memory address not used by the main kernel or firmware using
2843 config PHYSICAL_START
2844 hex "Physical address where the kernel is loaded"
2845 default "0xffffffff84000000" if 64BIT
2846 default "0x84000000" if 32BIT
2847 depends on CRASH_DUMP
2849 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2850 If you plan to use kernel for capturing the crash dump change
2851 this value to start of the reserved region (the "X" value as
2852 specified in the "crashkernel=YM@XM" command line boot parameter
2853 passed to the panic-ed kernel).
2856 bool "Enable seccomp to safely compute untrusted bytecode"
2860 This kernel feature is useful for number crunching applications
2861 that may need to compute untrusted bytecode during their
2862 execution. By using pipes or other transports made available to
2863 the process as file descriptors supporting the read/write
2864 syscalls, it's possible to isolate those applications in
2865 their own address space using seccomp. Once seccomp is
2866 enabled via /proc/<pid>/seccomp, it cannot be disabled
2867 and the task is only allowed to execute a few safe syscalls
2868 defined by each seccomp mode.
2870 If unsure, say Y. Only embedded should say N here.
2872 config MIPS_O32_FP64_SUPPORT
2873 bool "Support for O32 binaries using 64-bit FP"
2874 depends on 32BIT || MIPS32_O32
2876 When this is enabled, the kernel will support use of 64-bit floating
2877 point registers with binaries using the O32 ABI along with the
2878 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2879 32-bit MIPS systems this support is at the cost of increasing the
2880 size and complexity of the compiled FPU emulator. Thus if you are
2881 running a MIPS32 system and know that none of your userland binaries
2882 will require 64-bit floating point, you may wish to reduce the size
2883 of your kernel & potentially improve FP emulation performance by
2886 Although binutils currently supports use of this flag the details
2887 concerning its effect upon the O32 ABI in userland are still being
2888 worked on. In order to avoid userland becoming dependant upon current
2889 behaviour before the details have been finalised, this option should
2890 be considered experimental and only enabled by those working upon
2898 select OF_EARLY_FLATTREE
2905 prompt "Kernel appended dtb support" if USE_OF
2906 default MIPS_NO_APPENDED_DTB
2908 config MIPS_NO_APPENDED_DTB
2911 Do not enable appended dtb support.
2913 config MIPS_ELF_APPENDED_DTB
2916 With this option, the boot code will look for a device tree binary
2917 DTB) included in the vmlinux ELF section .appended_dtb. By default
2918 it is empty and the DTB can be appended using binutils command
2921 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2923 This is meant as a backward compatiblity convenience for those
2924 systems with a bootloader that can't be upgraded to accommodate
2925 the documented boot protocol using a device tree.
2927 config MIPS_RAW_APPENDED_DTB
2928 bool "vmlinux.bin or vmlinuz.bin"
2930 With this option, the boot code will look for a device tree binary
2931 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2932 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2934 This is meant as a backward compatibility convenience for those
2935 systems with a bootloader that can't be upgraded to accommodate
2936 the documented boot protocol using a device tree.
2938 Beware that there is very little in terms of protection against
2939 this option being confused by leftover garbage in memory that might
2940 look like a DTB header after a reboot if no actual DTB is appended
2941 to vmlinux.bin. Do not leave this option active in a production kernel
2942 if you don't intend to always append a DTB.
2946 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2947 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2950 default MIPS_CMDLINE_FROM_BOOTLOADER
2952 config MIPS_CMDLINE_FROM_DTB
2954 bool "Dtb kernel arguments if available"
2956 config MIPS_CMDLINE_DTB_EXTEND
2958 bool "Extend dtb kernel arguments with bootloader arguments"
2960 config MIPS_CMDLINE_FROM_BOOTLOADER
2961 bool "Bootloader kernel arguments if available"
2963 config MIPS_CMDLINE_BUILTIN_EXTEND
2964 depends on CMDLINE_BOOL
2965 bool "Extend builtin kernel arguments with bootloader arguments"
2970 config LOCKDEP_SUPPORT
2974 config STACKTRACE_SUPPORT
2978 config HAVE_LATENCYTOP_SUPPORT
2982 config PGTABLE_LEVELS
2984 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2985 default 3 if 64BIT && !PAGE_SIZE_64KB
2988 source "init/Kconfig"
2990 source "kernel/Kconfig.freezer"
2992 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3000 bool "Support for PCI controller"
3001 depends on HW_HAS_PCI
3004 Find out whether you have a PCI motherboard. PCI is the name of a
3005 bus system, i.e. the way the CPU talks to the other stuff inside
3006 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3010 bool "Support for HT-linked PCI"
3012 depends on CPU_LOONGSON3
3016 Loongson family machines use Hyper-Transport bus for inter-core
3017 connection and device connection. The PCI bus is a subordinate
3018 linked at HT. Choose Y for Loongson-3 based machines.
3023 config PCI_DOMAINS_GENERIC
3026 config PCI_DRIVERS_GENERIC
3027 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3030 config PCI_DRIVERS_LEGACY
3031 def_bool !PCI_DRIVERS_GENERIC
3032 select NO_GENERIC_PCI_IOPORT_MAP
3034 source "drivers/pci/Kconfig"
3037 # ISA support is now enabled via select. Too many systems still have the one
3038 # or other ISA chip on the board that users don't know about so don't expect
3039 # users to choose the right thing ...
3046 depends on HW_HAS_EISA
3048 select GENERIC_ISA_DMA
3050 The Extended Industry Standard Architecture (EISA) bus was
3051 developed as an open alternative to the IBM MicroChannel bus.
3053 The EISA bus provided some of the features of the IBM MicroChannel
3054 bus while maintaining backward compatibility with cards made for
3055 the older ISA bus. The EISA bus saw limited use between 1988 and
3056 1995 when it was made obsolete by the PCI bus.
3058 Say Y here if you are building a kernel for an EISA-based machine.
3062 source "drivers/eisa/Kconfig"
3065 bool "TURBOchannel support"
3066 depends on MACH_DECSTATION
3068 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3069 processors. TURBOchannel programming specifications are available
3071 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3073 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3074 Linux driver support status is documented at:
3075 <http://www.linux-mips.org/wiki/DECstation>
3081 config ARCH_MMAP_RND_BITS_MIN
3085 config ARCH_MMAP_RND_BITS_MAX
3089 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3092 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3099 select MIPS_EXTERNAL_TIMER
3107 source "drivers/pcmcia/Kconfig"
3110 tristate "RapidIO support"
3114 If you say Y here, the kernel will include drivers and
3115 infrastructure code to support RapidIO interconnect devices.
3117 source "drivers/rapidio/Kconfig"
3121 menu "Executable file formats"
3123 source "fs/Kconfig.binfmt"
3128 config MIPS32_COMPAT
3134 config SYSVIPC_COMPAT
3138 bool "Kernel support for o32 binaries"
3140 select ARCH_WANT_OLD_COMPAT_IPC
3142 select MIPS32_COMPAT
3143 select SYSVIPC_COMPAT if SYSVIPC
3145 Select this option if you want to run o32 binaries. These are pure
3146 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3147 existing binaries are in this format.
3152 bool "Kernel support for n32 binaries"
3155 select MIPS32_COMPAT
3156 select SYSVIPC_COMPAT if SYSVIPC
3158 Select this option if you want to run n32 binaries. These are
3159 64-bit binaries using 32-bit quantities for addressing and certain
3160 data that would normally be 64-bit. They are used in special
3167 default y if MIPS32_O32 || MIPS32_N32
3172 menu "Power management options"
3174 config ARCH_HIBERNATION_POSSIBLE
3176 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3178 config ARCH_SUSPEND_POSSIBLE
3180 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3182 source "kernel/power/Kconfig"
3186 config MIPS_EXTERNAL_TIMER
3189 menu "CPU Power Management"
3191 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3192 source "drivers/cpufreq/Kconfig"
3195 source "drivers/cpuidle/Kconfig"
3199 source "net/Kconfig"
3201 source "drivers/Kconfig"
3203 source "drivers/firmware/Kconfig"
3207 source "arch/mips/Kconfig.debug"
3209 source "security/Kconfig"
3211 source "crypto/Kconfig"
3213 source "lib/Kconfig"
3215 source "arch/mips/kvm/Kconfig"