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
371 select GENERIC_IRQ_CHIP
377 bool "Lantiq based platforms"
378 select DMA_NONCOHERENT
382 select SYS_HAS_CPU_MIPS32_R1
383 select SYS_HAS_CPU_MIPS32_R2
384 select SYS_SUPPORTS_BIG_ENDIAN
385 select SYS_SUPPORTS_32BIT_KERNEL
386 select SYS_SUPPORTS_MIPS16
387 select SYS_SUPPORTS_MULTITHREADING
388 select SYS_HAS_EARLY_PRINTK
395 select PINCTRL_LANTIQ
396 select ARCH_HAS_RESET_CONTROLLER
397 select RESET_CONTROLLER
400 bool "LASAT Networks platforms"
404 select DMA_NONCOHERENT
405 select SYS_HAS_EARLY_PRINTK
408 select PCI_GT64XXX_PCI0
410 select R5000_CPU_SCACHE
411 select SYS_HAS_CPU_R5000
412 select SYS_SUPPORTS_32BIT_KERNEL
413 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
414 select SYS_SUPPORTS_LITTLE_ENDIAN
416 config MACH_LOONGSON32
417 bool "Loongson-1 family of machines"
418 select SYS_SUPPORTS_ZBOOT
420 This enables support for the Loongson-1 family of machines.
422 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
423 the Institute of Computing Technology (ICT), Chinese Academy of
426 config MACH_LOONGSON64
427 bool "Loongson-2/3 family of machines"
428 select SYS_SUPPORTS_ZBOOT
430 This enables the support of Loongson-2/3 family of machines.
432 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
433 family of multi-core CPUs. They are both 64-bit general-purpose
434 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
435 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
436 in the People's Republic of China. The chief architect is Professor
439 config MACH_PISTACHIO
440 bool "IMG Pistachio SoC based boards"
444 select CLKSRC_MIPS_GIC
447 select DMA_NONCOHERENT
452 select MIPS_CPU_SCACHE
456 select SYS_HAS_CPU_MIPS32_R2
457 select SYS_SUPPORTS_32BIT_KERNEL
458 select SYS_SUPPORTS_LITTLE_ENDIAN
459 select SYS_SUPPORTS_MIPS_CPS
460 select SYS_SUPPORTS_MULTITHREADING
461 select SYS_SUPPORTS_RELOCATABLE
462 select SYS_SUPPORTS_ZBOOT
463 select SYS_HAS_EARLY_PRINTK
464 select USE_GENERIC_EARLY_PRINTK_8250
467 This enables support for the IMG Pistachio SoC platform.
470 bool "MIPSfpga Xilinx based boards"
480 select MIPS_CPU_SCACHE
481 select SYS_HAS_EARLY_PRINTK
482 select SYS_HAS_CPU_MIPS32_R2
483 select SYS_SUPPORTS_32BIT_KERNEL
484 select SYS_SUPPORTS_LITTLE_ENDIAN
485 select SYS_SUPPORTS_ZBOOT_UART16550
487 select USE_GENERIC_EARLY_PRINTK_8250
490 This enables support for the IMG University Program MIPSfpga platform.
493 bool "MIPS Malta board"
494 select ARCH_MAY_HAVE_PC_FDC
500 select CLKSRC_MIPS_GIC
502 select DMA_MAYBE_COHERENT
503 select GENERIC_ISA_DMA
504 select HAVE_PCSPKR_PLATFORM
511 select MIPS_CPU_SCACHE
512 select MIPS_L1_CACHE_SHIFT_6
513 select PCI_GT64XXX_PCI0
517 select SYS_HAS_CPU_MIPS32_R1
518 select SYS_HAS_CPU_MIPS32_R2
519 select SYS_HAS_CPU_MIPS32_R3_5
520 select SYS_HAS_CPU_MIPS32_R5
521 select SYS_HAS_CPU_MIPS32_R6
522 select SYS_HAS_CPU_MIPS64_R1
523 select SYS_HAS_CPU_MIPS64_R2
524 select SYS_HAS_CPU_MIPS64_R6
525 select SYS_HAS_CPU_NEVADA
526 select SYS_HAS_CPU_RM7000
527 select SYS_SUPPORTS_32BIT_KERNEL
528 select SYS_SUPPORTS_64BIT_KERNEL
529 select SYS_SUPPORTS_BIG_ENDIAN
530 select SYS_SUPPORTS_HIGHMEM
531 select SYS_SUPPORTS_LITTLE_ENDIAN
532 select SYS_SUPPORTS_MICROMIPS
533 select SYS_SUPPORTS_MIPS_CMP
534 select SYS_SUPPORTS_MIPS_CPS
535 select SYS_SUPPORTS_MIPS16
536 select SYS_SUPPORTS_MULTITHREADING
537 select SYS_SUPPORTS_SMARTMIPS
538 select SYS_SUPPORTS_ZBOOT
539 select SYS_SUPPORTS_RELOCATABLE
542 select ZONE_DMA32 if 64BIT
546 This enables support for the MIPS Technologies Malta evaluation
550 bool "Microchip PIC32 Family"
552 This enables support for the Microchip PIC32 family of platforms.
554 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
558 bool "NEC EMMA2RH Mark-eins board"
562 This enables support for the NEC Electronics Mark-eins boards.
565 bool "NEC VR4100 series based machines"
568 select SYS_HAS_CPU_VR41XX
569 select SYS_SUPPORTS_MIPS16
573 bool "NXP STB220 board"
576 Support for NXP Semiconductors STB220 Development Board.
583 Support for NXP Semiconductors STB225 Development Board.
586 bool "PMC-Sierra MSP chipsets"
589 select DMA_NONCOHERENT
591 select NO_EXCEPT_FILL
593 select SYS_HAS_CPU_MIPS32_R1
594 select SYS_HAS_CPU_MIPS32_R2
595 select SYS_SUPPORTS_32BIT_KERNEL
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select SYS_SUPPORTS_MIPS16
600 select SERIAL_8250_CONSOLE
601 select USB_EHCI_BIG_ENDIAN_MMIO
602 select USB_EHCI_BIG_ENDIAN_DESC
604 This adds support for the PMC-Sierra family of Multi-Service
605 Processor System-On-A-Chips. These parts include a number
606 of integrated peripherals, interfaces and DSPs in addition to
607 a variety of MIPS cores.
610 bool "Ralink based machines"
614 select DMA_NONCOHERENT
617 select SYS_HAS_CPU_MIPS32_R1
618 select SYS_HAS_CPU_MIPS32_R2
619 select SYS_SUPPORTS_32BIT_KERNEL
620 select SYS_SUPPORTS_LITTLE_ENDIAN
621 select SYS_SUPPORTS_MIPS16
622 select SYS_HAS_EARLY_PRINTK
624 select ARCH_HAS_RESET_CONTROLLER
625 select RESET_CONTROLLER
628 bool "SGI IP22 (Indy/Indigo2)"
634 select DEFAULT_SGI_PARTITION
635 select DMA_NONCOHERENT
639 select IP22_CPU_SCACHE
641 select GENERIC_ISA_DMA_SUPPORT_BROKEN
643 select SGI_HAS_INDYDOG
649 select SYS_HAS_CPU_R4X00
650 select SYS_HAS_CPU_R5000
652 # Disable EARLY_PRINTK for now since it leads to overwritten prom
653 # memory during early boot on some machines.
655 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
656 # for a more details discussion
658 # select SYS_HAS_EARLY_PRINTK
659 select SYS_SUPPORTS_32BIT_KERNEL
660 select SYS_SUPPORTS_64BIT_KERNEL
661 select SYS_SUPPORTS_BIG_ENDIAN
662 select MIPS_L1_CACHE_SHIFT_7
664 This are the SGI Indy, Challenge S and Indigo2, as well as certain
665 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
666 that runs on these, say Y here.
669 bool "SGI IP27 (Origin200/2000)"
673 select DEFAULT_SGI_PARTITION
675 select SYS_HAS_EARLY_PRINTK
677 select NR_CPUS_DEFAULT_64
678 select SYS_HAS_CPU_R10000
679 select SYS_SUPPORTS_64BIT_KERNEL
680 select SYS_SUPPORTS_BIG_ENDIAN
681 select SYS_SUPPORTS_NUMA
682 select SYS_SUPPORTS_SMP
683 select MIPS_L1_CACHE_SHIFT_7
685 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
686 workstations. To compile a Linux kernel that runs on these, say Y
690 bool "SGI IP28 (Indigo2 R10k)"
696 select DEFAULT_SGI_PARTITION
697 select DMA_NONCOHERENT
698 select GENERIC_ISA_DMA_SUPPORT_BROKEN
704 select SGI_HAS_INDYDOG
710 select SYS_HAS_CPU_R10000
712 # Disable EARLY_PRINTK for now since it leads to overwritten prom
713 # memory during early boot on some machines.
715 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
716 # for a more details discussion
718 # select SYS_HAS_EARLY_PRINTK
719 select SYS_SUPPORTS_64BIT_KERNEL
720 select SYS_SUPPORTS_BIG_ENDIAN
721 select MIPS_L1_CACHE_SHIFT_7
723 This is the SGI Indigo2 with R10000 processor. To compile a Linux
724 kernel that runs on these, say Y here.
733 select DMA_NONCOHERENT
736 select R5000_CPU_SCACHE
737 select RM7000_CPU_SCACHE
738 select SYS_HAS_CPU_R5000
739 select SYS_HAS_CPU_R10000 if BROKEN
740 select SYS_HAS_CPU_RM7000
741 select SYS_HAS_CPU_NEVADA
742 select SYS_SUPPORTS_64BIT_KERNEL
743 select SYS_SUPPORTS_BIG_ENDIAN
745 If you want this kernel to run on SGI O2 workstation, say Y here.
748 bool "Sibyte BCM91120C-CRhine"
751 select SIBYTE_BCM1120
753 select SYS_HAS_CPU_SB1
754 select SYS_SUPPORTS_BIG_ENDIAN
755 select SYS_SUPPORTS_LITTLE_ENDIAN
758 bool "Sibyte BCM91120x-Carmel"
761 select SIBYTE_BCM1120
763 select SYS_HAS_CPU_SB1
764 select SYS_SUPPORTS_BIG_ENDIAN
765 select SYS_SUPPORTS_LITTLE_ENDIAN
768 bool "Sibyte BCM91125C-CRhone"
771 select SIBYTE_BCM1125
773 select SYS_HAS_CPU_SB1
774 select SYS_SUPPORTS_BIG_ENDIAN
775 select SYS_SUPPORTS_HIGHMEM
776 select SYS_SUPPORTS_LITTLE_ENDIAN
779 bool "Sibyte BCM91125E-Rhone"
782 select SIBYTE_BCM1125H
784 select SYS_HAS_CPU_SB1
785 select SYS_SUPPORTS_BIG_ENDIAN
786 select SYS_SUPPORTS_LITTLE_ENDIAN
789 bool "Sibyte BCM91250A-SWARM"
792 select HAVE_PATA_PLATFORM
795 select SYS_HAS_CPU_SB1
796 select SYS_SUPPORTS_BIG_ENDIAN
797 select SYS_SUPPORTS_HIGHMEM
798 select SYS_SUPPORTS_LITTLE_ENDIAN
799 select ZONE_DMA32 if 64BIT
801 config SIBYTE_LITTLESUR
802 bool "Sibyte BCM91250C2-LittleSur"
805 select HAVE_PATA_PLATFORM
808 select SYS_HAS_CPU_SB1
809 select SYS_SUPPORTS_BIG_ENDIAN
810 select SYS_SUPPORTS_HIGHMEM
811 select SYS_SUPPORTS_LITTLE_ENDIAN
813 config SIBYTE_SENTOSA
814 bool "Sibyte BCM91250E-Sentosa"
819 select SYS_HAS_CPU_SB1
820 select SYS_SUPPORTS_BIG_ENDIAN
821 select SYS_SUPPORTS_LITTLE_ENDIAN
824 bool "Sibyte BCM91480B-BigSur"
827 select NR_CPUS_DEFAULT_4
828 select SIBYTE_BCM1x80
830 select SYS_HAS_CPU_SB1
831 select SYS_SUPPORTS_BIG_ENDIAN
832 select SYS_SUPPORTS_HIGHMEM
833 select SYS_SUPPORTS_LITTLE_ENDIAN
834 select ZONE_DMA32 if 64BIT
837 bool "SNI RM200/300/400"
838 select FW_ARC if CPU_LITTLE_ENDIAN
839 select FW_ARC32 if CPU_LITTLE_ENDIAN
840 select FW_SNIPROM if CPU_BIG_ENDIAN
841 select ARCH_MAY_HAVE_PC_FDC
845 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
846 select DMA_NONCOHERENT
847 select GENERIC_ISA_DMA
848 select HAVE_PCSPKR_PLATFORM
855 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
856 select SYS_HAS_CPU_R4X00
857 select SYS_HAS_CPU_R5000
858 select SYS_HAS_CPU_R10000
859 select R5000_CPU_SCACHE
860 select SYS_HAS_EARLY_PRINTK
861 select SYS_SUPPORTS_32BIT_KERNEL
862 select SYS_SUPPORTS_64BIT_KERNEL
863 select SYS_SUPPORTS_BIG_ENDIAN
864 select SYS_SUPPORTS_HIGHMEM
865 select SYS_SUPPORTS_LITTLE_ENDIAN
867 The SNI RM200/300/400 are MIPS-based machines manufactured by
868 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
869 Technology and now in turn merged with Fujitsu. Say Y here to
870 support this machine type.
873 bool "Toshiba TX39 series based machines"
876 bool "Toshiba TX49 series based machines"
878 config MIKROTIK_RB532
879 bool "Mikrotik RB532 boards"
882 select DMA_NONCOHERENT
885 select SYS_HAS_CPU_MIPS32_R1
886 select SYS_SUPPORTS_32BIT_KERNEL
887 select SYS_SUPPORTS_LITTLE_ENDIAN
891 select MIPS_L1_CACHE_SHIFT_4
893 Support the Mikrotik(tm) RouterBoard 532 series,
894 based on the IDT RC32434 SoC.
896 config CAVIUM_OCTEON_SOC
897 bool "Cavium Networks Octeon SoC based boards"
899 select ARCH_PHYS_ADDR_T_64BIT
901 select SYS_SUPPORTS_64BIT_KERNEL
902 select SYS_SUPPORTS_BIG_ENDIAN
904 select EDAC_ATOMIC_SCRUB
905 select SYS_SUPPORTS_LITTLE_ENDIAN
906 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
907 select SYS_HAS_EARLY_PRINTK
908 select SYS_HAS_CPU_CAVIUM_OCTEON
915 select ARCH_SPARSEMEM_ENABLE
916 select SYS_SUPPORTS_SMP
917 select NR_CPUS_DEFAULT_16
919 select MTD_COMPLEX_MAPPINGS
920 select SYS_SUPPORTS_RELOCATABLE
922 This option supports all of the Octeon reference boards from Cavium
923 Networks. It builds a kernel that dynamically determines the Octeon
924 CPU type and supports all known board reference implementations.
925 Some of the supported boards are:
932 Say Y here for most Octeon reference boards.
935 bool "Netlogic XLR/XLS based systems"
938 select SYS_HAS_CPU_XLR
939 select SYS_SUPPORTS_SMP
942 select SYS_SUPPORTS_32BIT_KERNEL
943 select SYS_SUPPORTS_64BIT_KERNEL
944 select ARCH_PHYS_ADDR_T_64BIT
945 select SYS_SUPPORTS_BIG_ENDIAN
946 select SYS_SUPPORTS_HIGHMEM
948 select NR_CPUS_DEFAULT_32
952 select ZONE_DMA32 if 64BIT
954 select SYS_HAS_EARLY_PRINTK
955 select SYS_SUPPORTS_ZBOOT
956 select SYS_SUPPORTS_ZBOOT_UART16550
958 Support for systems based on Netlogic XLR and XLS processors.
959 Say Y here if you have a XLR or XLS based board.
962 bool "Netlogic XLP based systems"
965 select SYS_HAS_CPU_XLP
966 select SYS_SUPPORTS_SMP
968 select SYS_SUPPORTS_32BIT_KERNEL
969 select SYS_SUPPORTS_64BIT_KERNEL
970 select ARCH_PHYS_ADDR_T_64BIT
972 select SYS_SUPPORTS_BIG_ENDIAN
973 select SYS_SUPPORTS_LITTLE_ENDIAN
974 select SYS_SUPPORTS_HIGHMEM
976 select NR_CPUS_DEFAULT_32
980 select ZONE_DMA32 if 64BIT
982 select SYS_HAS_EARLY_PRINTK
984 select SYS_SUPPORTS_ZBOOT
985 select SYS_SUPPORTS_ZBOOT_UART16550
987 This board is based on Netlogic XLP Processor.
988 Say Y here if you have a XLP based board.
991 bool "Para-Virtualized guest system"
995 select SYS_SUPPORTS_64BIT_KERNEL
996 select SYS_SUPPORTS_32BIT_KERNEL
997 select SYS_SUPPORTS_BIG_ENDIAN
998 select SYS_SUPPORTS_SMP
999 select NR_CPUS_DEFAULT_4
1000 select SYS_HAS_EARLY_PRINTK
1001 select SYS_HAS_CPU_MIPS32_R2
1002 select SYS_HAS_CPU_MIPS64_R2
1003 select SYS_HAS_CPU_CAVIUM_OCTEON
1005 select SWAP_IO_SPACE
1007 This option supports guest running under ????
1011 source "arch/mips/alchemy/Kconfig"
1012 source "arch/mips/ath25/Kconfig"
1013 source "arch/mips/ath79/Kconfig"
1014 source "arch/mips/bcm47xx/Kconfig"
1015 source "arch/mips/bcm63xx/Kconfig"
1016 source "arch/mips/bmips/Kconfig"
1017 source "arch/mips/generic/Kconfig"
1018 source "arch/mips/jazz/Kconfig"
1019 source "arch/mips/jz4740/Kconfig"
1020 source "arch/mips/lantiq/Kconfig"
1021 source "arch/mips/lasat/Kconfig"
1022 source "arch/mips/pic32/Kconfig"
1023 source "arch/mips/pistachio/Kconfig"
1024 source "arch/mips/pmcs-msp71xx/Kconfig"
1025 source "arch/mips/ralink/Kconfig"
1026 source "arch/mips/sgi-ip27/Kconfig"
1027 source "arch/mips/sibyte/Kconfig"
1028 source "arch/mips/txx9/Kconfig"
1029 source "arch/mips/vr41xx/Kconfig"
1030 source "arch/mips/cavium-octeon/Kconfig"
1031 source "arch/mips/loongson32/Kconfig"
1032 source "arch/mips/loongson64/Kconfig"
1033 source "arch/mips/netlogic/Kconfig"
1034 source "arch/mips/paravirt/Kconfig"
1035 source "arch/mips/xilfpga/Kconfig"
1039 config RWSEM_GENERIC_SPINLOCK
1043 config RWSEM_XCHGADD_ALGORITHM
1046 config GENERIC_HWEIGHT
1050 config GENERIC_CALIBRATE_DELAY
1054 config SCHED_OMIT_FRAME_POINTER
1059 # Select some configuration options automatically based on user selections.
1064 config ARCH_MAY_HAVE_PC_FDC
1100 config MIPS_CLOCK_VSYSCALL
1101 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1110 config ARCH_DMA_ADDR_T_64BIT
1111 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1113 config ARCH_SUPPORTS_UPROBES
1116 config DMA_MAYBE_COHERENT
1117 select DMA_NONCOHERENT
1120 config DMA_PERDEV_COHERENT
1122 select DMA_MAYBE_COHERENT
1127 config DMA_NONCOHERENT
1129 select NEED_DMA_MAP_STATE
1131 config NEED_DMA_MAP_STATE
1134 config SYS_HAS_EARLY_PRINTK
1137 config SYS_SUPPORTS_HOTPLUG_CPU
1140 config MIPS_BONITO64
1155 config NO_IOPORT_MAP
1161 config GENERIC_ISA_DMA
1163 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1166 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1168 select GENERIC_ISA_DMA
1173 config HOLES_IN_ZONE
1176 config SYS_SUPPORTS_RELOCATABLE
1179 Selected if the platform supports relocating the kernel.
1180 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1181 to allow access to command line and entropy sources.
1183 config MIPS_CBPF_JIT
1185 depends on BPF_JIT && HAVE_CBPF_JIT
1187 config MIPS_EBPF_JIT
1189 depends on BPF_JIT && HAVE_EBPF_JIT
1193 # Endianness selection. Sufficiently obscure so many users don't know what to
1194 # answer,so we try hard to limit the available choices. Also the use of a
1195 # choice statement should be more obvious to the user.
1198 prompt "Endianness selection"
1200 Some MIPS machines can be configured for either little or big endian
1201 byte order. These modes require different kernels and a different
1202 Linux distribution. In general there is one preferred byteorder for a
1203 particular system but some systems are just as commonly used in the
1204 one or the other endianness.
1206 config CPU_BIG_ENDIAN
1208 depends on SYS_SUPPORTS_BIG_ENDIAN
1210 config CPU_LITTLE_ENDIAN
1211 bool "Little endian"
1212 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1219 config SYS_SUPPORTS_APM_EMULATION
1222 config SYS_SUPPORTS_BIG_ENDIAN
1225 config SYS_SUPPORTS_LITTLE_ENDIAN
1228 config SYS_SUPPORTS_HUGETLBFS
1230 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1233 config MIPS_HUGE_TLB_SUPPORT
1234 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1251 config PCI_GT64XXX_PCI0
1254 config NO_EXCEPT_FILL
1261 select DMA_NONCOHERENT
1263 select SWAP_IO_SPACE
1264 select SYS_HAS_CPU_R5500
1265 select SYS_SUPPORTS_32BIT_KERNEL
1266 select SYS_SUPPORTS_64BIT_KERNEL
1267 select SYS_SUPPORTS_BIG_ENDIAN
1274 select DMA_NONCOHERENT
1275 select SYS_HAS_CPU_MIPS32_R2
1276 select SYS_SUPPORTS_32BIT_KERNEL
1277 select SYS_SUPPORTS_LITTLE_ENDIAN
1278 select SYS_SUPPORTS_BIG_ENDIAN
1279 select SYS_SUPPORTS_MIPS16
1280 select CPU_MIPSR2_IRQ_VI
1289 config SWAP_IO_SPACE
1292 config SGI_HAS_INDYDOG
1304 config SGI_HAS_ZILOG
1307 config SGI_HAS_I8042
1310 config DEFAULT_SGI_PARTITION
1322 config MIPS_L1_CACHE_SHIFT_4
1325 config MIPS_L1_CACHE_SHIFT_5
1328 config MIPS_L1_CACHE_SHIFT_6
1331 config MIPS_L1_CACHE_SHIFT_7
1334 config MIPS_L1_CACHE_SHIFT
1336 default "7" if MIPS_L1_CACHE_SHIFT_7
1337 default "6" if MIPS_L1_CACHE_SHIFT_6
1338 default "5" if MIPS_L1_CACHE_SHIFT_5
1339 default "4" if MIPS_L1_CACHE_SHIFT_4
1342 config HAVE_STD_PC_SERIAL_PORT
1346 bool "ARC console support"
1347 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1351 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1356 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1365 menu "CPU selection"
1371 config CPU_LOONGSON3
1372 bool "Loongson 3 CPU"
1373 depends on SYS_HAS_CPU_LOONGSON3
1374 select CPU_SUPPORTS_64BIT_KERNEL
1375 select CPU_SUPPORTS_HIGHMEM
1376 select CPU_SUPPORTS_HUGEPAGES
1377 select WEAK_ORDERING
1378 select WEAK_REORDERING_BEYOND_LLSC
1379 select MIPS_PGD_C0_CONTEXT
1380 select MIPS_L1_CACHE_SHIFT_6
1383 The Loongson 3 processor implements the MIPS64R2 instruction
1384 set with many extensions.
1386 config LOONGSON3_ENHANCEMENT
1387 bool "New Loongson 3 CPU Enhancements"
1390 select CPU_HAS_PREFETCH
1391 depends on CPU_LOONGSON3
1393 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1394 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1395 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1396 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1397 Fast TLB refill support, etc.
1399 This option enable those enhancements which are not probed at run
1400 time. If you want a generic kernel to run on all Loongson 3 machines,
1401 please say 'N' here. If you want a high-performance kernel to run on
1402 new Loongson 3 machines only, please say 'Y' here.
1404 config CPU_LOONGSON2E
1406 depends on SYS_HAS_CPU_LOONGSON2E
1407 select CPU_LOONGSON2
1409 The Loongson 2E processor implements the MIPS III instruction set
1410 with many extensions.
1412 It has an internal FPGA northbridge, which is compatible to
1415 config CPU_LOONGSON2F
1417 depends on SYS_HAS_CPU_LOONGSON2F
1418 select CPU_LOONGSON2
1421 The Loongson 2F processor implements the MIPS III instruction set
1422 with many extensions.
1424 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1425 have a similar programming interface with FPGA northbridge used in
1428 config CPU_LOONGSON1B
1430 depends on SYS_HAS_CPU_LOONGSON1B
1431 select CPU_LOONGSON1
1432 select LEDS_GPIO_REGISTER
1434 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1435 release 2 instruction set.
1437 config CPU_LOONGSON1C
1439 depends on SYS_HAS_CPU_LOONGSON1C
1440 select CPU_LOONGSON1
1441 select LEDS_GPIO_REGISTER
1443 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1444 release 2 instruction set.
1446 config CPU_MIPS32_R1
1447 bool "MIPS32 Release 1"
1448 depends on SYS_HAS_CPU_MIPS32_R1
1449 select CPU_HAS_PREFETCH
1450 select CPU_SUPPORTS_32BIT_KERNEL
1451 select CPU_SUPPORTS_HIGHMEM
1453 Choose this option to build a kernel for release 1 or later of the
1454 MIPS32 architecture. Most modern embedded systems with a 32-bit
1455 MIPS processor are based on a MIPS32 processor. If you know the
1456 specific type of processor in your system, choose those that one
1457 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1458 Release 2 of the MIPS32 architecture is available since several
1459 years so chances are you even have a MIPS32 Release 2 processor
1460 in which case you should choose CPU_MIPS32_R2 instead for better
1463 config CPU_MIPS32_R2
1464 bool "MIPS32 Release 2"
1465 depends on SYS_HAS_CPU_MIPS32_R2
1466 select CPU_HAS_PREFETCH
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_HIGHMEM
1469 select CPU_SUPPORTS_MSA
1472 Choose this option to build a kernel for release 2 or later of the
1473 MIPS32 architecture. Most modern embedded systems with a 32-bit
1474 MIPS processor are based on a MIPS32 processor. If you know the
1475 specific type of processor in your system, choose those that one
1476 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1478 config CPU_MIPS32_R6
1479 bool "MIPS32 Release 6"
1480 depends on SYS_HAS_CPU_MIPS32_R6
1481 select CPU_HAS_PREFETCH
1482 select CPU_SUPPORTS_32BIT_KERNEL
1483 select CPU_SUPPORTS_HIGHMEM
1484 select CPU_SUPPORTS_MSA
1487 select MIPS_O32_FP64_SUPPORT
1489 Choose this option to build a kernel for release 6 or later of the
1490 MIPS32 architecture. New MIPS processors, starting with the Warrior
1491 family, are based on a MIPS32r6 processor. If you own an older
1492 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1494 config CPU_MIPS64_R1
1495 bool "MIPS64 Release 1"
1496 depends on SYS_HAS_CPU_MIPS64_R1
1497 select CPU_HAS_PREFETCH
1498 select CPU_SUPPORTS_32BIT_KERNEL
1499 select CPU_SUPPORTS_64BIT_KERNEL
1500 select CPU_SUPPORTS_HIGHMEM
1501 select CPU_SUPPORTS_HUGEPAGES
1503 Choose this option to build a kernel for release 1 or later of the
1504 MIPS64 architecture. Many modern embedded systems with a 64-bit
1505 MIPS processor are based on a MIPS64 processor. If you know the
1506 specific type of processor in your system, choose those that one
1507 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1508 Release 2 of the MIPS64 architecture is available since several
1509 years so chances are you even have a MIPS64 Release 2 processor
1510 in which case you should choose CPU_MIPS64_R2 instead for better
1513 config CPU_MIPS64_R2
1514 bool "MIPS64 Release 2"
1515 depends on SYS_HAS_CPU_MIPS64_R2
1516 select CPU_HAS_PREFETCH
1517 select CPU_SUPPORTS_32BIT_KERNEL
1518 select CPU_SUPPORTS_64BIT_KERNEL
1519 select CPU_SUPPORTS_HIGHMEM
1520 select CPU_SUPPORTS_HUGEPAGES
1521 select CPU_SUPPORTS_MSA
1524 Choose this option to build a kernel for release 2 or later of the
1525 MIPS64 architecture. Many modern embedded systems with a 64-bit
1526 MIPS processor are based on a MIPS64 processor. If you know the
1527 specific type of processor in your system, choose those that one
1528 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1530 config CPU_MIPS64_R6
1531 bool "MIPS64 Release 6"
1532 depends on SYS_HAS_CPU_MIPS64_R6
1533 select CPU_HAS_PREFETCH
1534 select CPU_SUPPORTS_32BIT_KERNEL
1535 select CPU_SUPPORTS_64BIT_KERNEL
1536 select CPU_SUPPORTS_HIGHMEM
1537 select CPU_SUPPORTS_MSA
1539 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1542 Choose this option to build a kernel for release 6 or later of the
1543 MIPS64 architecture. New MIPS processors, starting with the Warrior
1544 family, are based on a MIPS64r6 processor. If you own an older
1545 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1549 depends on SYS_HAS_CPU_R3000
1551 select CPU_SUPPORTS_32BIT_KERNEL
1552 select CPU_SUPPORTS_HIGHMEM
1554 Please make sure to pick the right CPU type. Linux/MIPS is not
1555 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1556 *not* work on R4000 machines and vice versa. However, since most
1557 of the supported machines have an R4000 (or similar) CPU, R4x00
1558 might be a safe bet. If the resulting kernel does not work,
1559 try to recompile with R3000.
1563 depends on SYS_HAS_CPU_TX39XX
1564 select CPU_SUPPORTS_32BIT_KERNEL
1568 depends on SYS_HAS_CPU_VR41XX
1569 select CPU_SUPPORTS_32BIT_KERNEL
1570 select CPU_SUPPORTS_64BIT_KERNEL
1572 The options selects support for the NEC VR4100 series of processors.
1573 Only choose this option if you have one of these processors as a
1574 kernel built with this option will not run on any other type of
1575 processor or vice versa.
1579 depends on SYS_HAS_CPU_R4300
1580 select CPU_SUPPORTS_32BIT_KERNEL
1581 select CPU_SUPPORTS_64BIT_KERNEL
1583 MIPS Technologies R4300-series processors.
1587 depends on SYS_HAS_CPU_R4X00
1588 select CPU_SUPPORTS_32BIT_KERNEL
1589 select CPU_SUPPORTS_64BIT_KERNEL
1590 select CPU_SUPPORTS_HUGEPAGES
1592 MIPS Technologies R4000-series processors other than 4300, including
1593 the R4000, R4400, R4600, and 4700.
1597 depends on SYS_HAS_CPU_TX49XX
1598 select CPU_HAS_PREFETCH
1599 select CPU_SUPPORTS_32BIT_KERNEL
1600 select CPU_SUPPORTS_64BIT_KERNEL
1601 select CPU_SUPPORTS_HUGEPAGES
1605 depends on SYS_HAS_CPU_R5000
1606 select CPU_SUPPORTS_32BIT_KERNEL
1607 select CPU_SUPPORTS_64BIT_KERNEL
1608 select CPU_SUPPORTS_HUGEPAGES
1610 MIPS Technologies R5000-series processors other than the Nevada.
1614 depends on SYS_HAS_CPU_R5432
1615 select CPU_SUPPORTS_32BIT_KERNEL
1616 select CPU_SUPPORTS_64BIT_KERNEL
1617 select CPU_SUPPORTS_HUGEPAGES
1621 depends on SYS_HAS_CPU_R5500
1622 select CPU_SUPPORTS_32BIT_KERNEL
1623 select CPU_SUPPORTS_64BIT_KERNEL
1624 select CPU_SUPPORTS_HUGEPAGES
1626 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1631 depends on SYS_HAS_CPU_R6000
1632 select CPU_SUPPORTS_32BIT_KERNEL
1634 MIPS Technologies R6000 and R6000A series processors. Note these
1635 processors are extremely rare and the support for them is incomplete.
1639 depends on SYS_HAS_CPU_NEVADA
1640 select CPU_SUPPORTS_32BIT_KERNEL
1641 select CPU_SUPPORTS_64BIT_KERNEL
1642 select CPU_SUPPORTS_HUGEPAGES
1644 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1648 depends on SYS_HAS_CPU_R8000
1649 select CPU_HAS_PREFETCH
1650 select CPU_SUPPORTS_64BIT_KERNEL
1652 MIPS Technologies R8000 processors. Note these processors are
1653 uncommon and the support for them is incomplete.
1657 depends on SYS_HAS_CPU_R10000
1658 select CPU_HAS_PREFETCH
1659 select CPU_SUPPORTS_32BIT_KERNEL
1660 select CPU_SUPPORTS_64BIT_KERNEL
1661 select CPU_SUPPORTS_HIGHMEM
1662 select CPU_SUPPORTS_HUGEPAGES
1664 MIPS Technologies R10000-series processors.
1668 depends on SYS_HAS_CPU_RM7000
1669 select CPU_HAS_PREFETCH
1670 select CPU_SUPPORTS_32BIT_KERNEL
1671 select CPU_SUPPORTS_64BIT_KERNEL
1672 select CPU_SUPPORTS_HIGHMEM
1673 select CPU_SUPPORTS_HUGEPAGES
1677 depends on SYS_HAS_CPU_SB1
1678 select CPU_SUPPORTS_32BIT_KERNEL
1679 select CPU_SUPPORTS_64BIT_KERNEL
1680 select CPU_SUPPORTS_HIGHMEM
1681 select CPU_SUPPORTS_HUGEPAGES
1682 select WEAK_ORDERING
1684 config CPU_CAVIUM_OCTEON
1685 bool "Cavium Octeon processor"
1686 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1687 select CPU_HAS_PREFETCH
1688 select CPU_SUPPORTS_64BIT_KERNEL
1689 select WEAK_ORDERING
1690 select CPU_SUPPORTS_HIGHMEM
1691 select CPU_SUPPORTS_HUGEPAGES
1692 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1693 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1694 select MIPS_L1_CACHE_SHIFT_7
1697 The Cavium Octeon processor is a highly integrated chip containing
1698 many ethernet hardware widgets for networking tasks. The processor
1699 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1700 Full details can be found at http://www.caviumnetworks.com.
1703 bool "Broadcom BMIPS"
1704 depends on SYS_HAS_CPU_BMIPS
1706 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1707 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1708 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1709 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1710 select CPU_SUPPORTS_32BIT_KERNEL
1711 select DMA_NONCOHERENT
1713 select SWAP_IO_SPACE
1714 select WEAK_ORDERING
1715 select CPU_SUPPORTS_HIGHMEM
1716 select CPU_HAS_PREFETCH
1717 select CPU_SUPPORTS_CPUFREQ
1718 select MIPS_EXTERNAL_TIMER
1720 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1723 bool "Netlogic XLR SoC"
1724 depends on SYS_HAS_CPU_XLR
1725 select CPU_SUPPORTS_32BIT_KERNEL
1726 select CPU_SUPPORTS_64BIT_KERNEL
1727 select CPU_SUPPORTS_HIGHMEM
1728 select CPU_SUPPORTS_HUGEPAGES
1729 select WEAK_ORDERING
1730 select WEAK_REORDERING_BEYOND_LLSC
1732 Netlogic Microsystems XLR/XLS processors.
1735 bool "Netlogic XLP SoC"
1736 depends on SYS_HAS_CPU_XLP
1737 select CPU_SUPPORTS_32BIT_KERNEL
1738 select CPU_SUPPORTS_64BIT_KERNEL
1739 select CPU_SUPPORTS_HIGHMEM
1740 select WEAK_ORDERING
1741 select WEAK_REORDERING_BEYOND_LLSC
1742 select CPU_HAS_PREFETCH
1744 select CPU_SUPPORTS_HUGEPAGES
1745 select MIPS_ASID_BITS_VARIABLE
1747 Netlogic Microsystems XLP processors.
1750 config CPU_MIPS32_3_5_FEATURES
1751 bool "MIPS32 Release 3.5 Features"
1752 depends on SYS_HAS_CPU_MIPS32_R3_5
1753 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1755 Choose this option to build a kernel for release 2 or later of the
1756 MIPS32 architecture including features from the 3.5 release such as
1757 support for Enhanced Virtual Addressing (EVA).
1759 config CPU_MIPS32_3_5_EVA
1760 bool "Enhanced Virtual Addressing (EVA)"
1761 depends on CPU_MIPS32_3_5_FEATURES
1765 Choose this option if you want to enable the Enhanced Virtual
1766 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1767 One of its primary benefits is an increase in the maximum size
1768 of lowmem (up to 3GB). If unsure, say 'N' here.
1770 config CPU_MIPS32_R5_FEATURES
1771 bool "MIPS32 Release 5 Features"
1772 depends on SYS_HAS_CPU_MIPS32_R5
1773 depends on CPU_MIPS32_R2
1775 Choose this option to build a kernel for release 2 or later of the
1776 MIPS32 architecture including features from release 5 such as
1777 support for Extended Physical Addressing (XPA).
1779 config CPU_MIPS32_R5_XPA
1780 bool "Extended Physical Addressing (XPA)"
1781 depends on CPU_MIPS32_R5_FEATURES
1783 depends on !PAGE_SIZE_4KB
1784 depends on SYS_SUPPORTS_HIGHMEM
1787 select ARCH_PHYS_ADDR_T_64BIT
1790 Choose this option if you want to enable the Extended Physical
1791 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1792 benefit is to increase physical addressing equal to or greater
1793 than 40 bits. Note that this has the side effect of turning on
1794 64-bit addressing which in turn makes the PTEs 64-bit in size.
1795 If unsure, say 'N' here.
1798 config CPU_NOP_WORKAROUNDS
1801 config CPU_JUMP_WORKAROUNDS
1804 config CPU_LOONGSON2F_WORKAROUNDS
1805 bool "Loongson 2F Workarounds"
1807 select CPU_NOP_WORKAROUNDS
1808 select CPU_JUMP_WORKAROUNDS
1810 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1811 require workarounds. Without workarounds the system may hang
1812 unexpectedly. For more information please refer to the gas
1813 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1815 Loongson 2F03 and later have fixed these issues and no workarounds
1816 are needed. The workarounds have no significant side effect on them
1817 but may decrease the performance of the system so this option should
1818 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1821 If unsure, please say Y.
1822 endif # CPU_LOONGSON2F
1824 config SYS_SUPPORTS_ZBOOT
1826 select HAVE_KERNEL_GZIP
1827 select HAVE_KERNEL_BZIP2
1828 select HAVE_KERNEL_LZ4
1829 select HAVE_KERNEL_LZMA
1830 select HAVE_KERNEL_LZO
1831 select HAVE_KERNEL_XZ
1833 config SYS_SUPPORTS_ZBOOT_UART16550
1835 select SYS_SUPPORTS_ZBOOT
1837 config SYS_SUPPORTS_ZBOOT_UART_PROM
1839 select SYS_SUPPORTS_ZBOOT
1841 config CPU_LOONGSON2
1843 select CPU_SUPPORTS_32BIT_KERNEL
1844 select CPU_SUPPORTS_64BIT_KERNEL
1845 select CPU_SUPPORTS_HIGHMEM
1846 select CPU_SUPPORTS_HUGEPAGES
1848 config CPU_LOONGSON1
1852 select CPU_HAS_PREFETCH
1853 select CPU_SUPPORTS_32BIT_KERNEL
1854 select CPU_SUPPORTS_HIGHMEM
1855 select CPU_SUPPORTS_CPUFREQ
1857 config CPU_BMIPS32_3300
1858 select SMP_UP if SMP
1861 config CPU_BMIPS4350
1863 select SYS_SUPPORTS_SMP
1864 select SYS_SUPPORTS_HOTPLUG_CPU
1866 config CPU_BMIPS4380
1868 select MIPS_L1_CACHE_SHIFT_6
1869 select SYS_SUPPORTS_SMP
1870 select SYS_SUPPORTS_HOTPLUG_CPU
1873 config CPU_BMIPS5000
1875 select MIPS_CPU_SCACHE
1876 select MIPS_L1_CACHE_SHIFT_7
1877 select SYS_SUPPORTS_SMP
1878 select SYS_SUPPORTS_HOTPLUG_CPU
1881 config SYS_HAS_CPU_LOONGSON3
1883 select CPU_SUPPORTS_CPUFREQ
1886 config SYS_HAS_CPU_LOONGSON2E
1889 config SYS_HAS_CPU_LOONGSON2F
1891 select CPU_SUPPORTS_CPUFREQ
1892 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1893 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1895 config SYS_HAS_CPU_LOONGSON1B
1898 config SYS_HAS_CPU_LOONGSON1C
1901 config SYS_HAS_CPU_MIPS32_R1
1904 config SYS_HAS_CPU_MIPS32_R2
1907 config SYS_HAS_CPU_MIPS32_R3_5
1910 config SYS_HAS_CPU_MIPS32_R5
1913 config SYS_HAS_CPU_MIPS32_R6
1916 config SYS_HAS_CPU_MIPS64_R1
1919 config SYS_HAS_CPU_MIPS64_R2
1922 config SYS_HAS_CPU_MIPS64_R6
1925 config SYS_HAS_CPU_R3000
1928 config SYS_HAS_CPU_TX39XX
1931 config SYS_HAS_CPU_VR41XX
1934 config SYS_HAS_CPU_R4300
1937 config SYS_HAS_CPU_R4X00
1940 config SYS_HAS_CPU_TX49XX
1943 config SYS_HAS_CPU_R5000
1946 config SYS_HAS_CPU_R5432
1949 config SYS_HAS_CPU_R5500
1952 config SYS_HAS_CPU_R6000
1955 config SYS_HAS_CPU_NEVADA
1958 config SYS_HAS_CPU_R8000
1961 config SYS_HAS_CPU_R10000
1964 config SYS_HAS_CPU_RM7000
1967 config SYS_HAS_CPU_SB1
1970 config SYS_HAS_CPU_CAVIUM_OCTEON
1973 config SYS_HAS_CPU_BMIPS
1976 config SYS_HAS_CPU_BMIPS32_3300
1978 select SYS_HAS_CPU_BMIPS
1980 config SYS_HAS_CPU_BMIPS4350
1982 select SYS_HAS_CPU_BMIPS
1984 config SYS_HAS_CPU_BMIPS4380
1986 select SYS_HAS_CPU_BMIPS
1988 config SYS_HAS_CPU_BMIPS5000
1990 select SYS_HAS_CPU_BMIPS
1992 config SYS_HAS_CPU_XLR
1995 config SYS_HAS_CPU_XLP
1998 config MIPS_MALTA_PM
1999 depends on MIPS_MALTA
2005 # CPU may reorder R->R, R->W, W->R, W->W
2006 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2008 config WEAK_ORDERING
2012 # CPU may reorder reads and writes beyond LL/SC
2013 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2015 config WEAK_REORDERING_BEYOND_LLSC
2020 # These two indicate any level of the MIPS32 and MIPS64 architecture
2024 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2028 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2031 # These two indicate the revision of the architecture, either Release 1 or Release 2
2035 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2039 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2045 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2047 select HAVE_ARCH_BITREVERSE
2048 select MIPS_ASID_BITS_VARIABLE
2057 config SYS_SUPPORTS_32BIT_KERNEL
2059 config SYS_SUPPORTS_64BIT_KERNEL
2061 config CPU_SUPPORTS_32BIT_KERNEL
2063 config CPU_SUPPORTS_64BIT_KERNEL
2065 config CPU_SUPPORTS_CPUFREQ
2067 config CPU_SUPPORTS_ADDRWINCFG
2069 config CPU_SUPPORTS_HUGEPAGES
2071 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2073 config MIPS_PGD_C0_CONTEXT
2075 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2078 # Set to y for ptrace access to watch registers.
2080 config HARDWARE_WATCHPOINTS
2082 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2087 prompt "Kernel code model"
2089 You should only select this option if you have a workload that
2090 actually benefits from 64-bit processing or if your machine has
2091 large memory. You will only be presented a single option in this
2092 menu if your system does not support both 32-bit and 64-bit kernels.
2095 bool "32-bit kernel"
2096 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2099 Select this option if you want to build a 32-bit kernel.
2102 bool "64-bit kernel"
2103 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2105 Select this option if you want to build a 64-bit kernel.
2110 bool "KVM Guest Kernel"
2111 depends on BROKEN_ON_SMP
2113 Select this option if building a guest kernel for KVM (Trap & Emulate)
2116 config KVM_GUEST_TIMER_FREQ
2117 int "Count/Compare Timer Frequency (MHz)"
2118 depends on KVM_GUEST
2121 Set this to non-zero if building a guest kernel for KVM to skip RTC
2122 emulation when determining guest CPU Frequency. Instead, the guest's
2123 timer frequency is specified directly.
2125 config MIPS_VA_BITS_48
2126 bool "48 bits virtual memory"
2129 Support a maximum at least 48 bits of application virtual
2130 memory. Default is 40 bits or less, depending on the CPU.
2131 For page sizes 16k and above, this option results in a small
2132 memory overhead for page tables. For 4k page size, a fourth
2133 level of page tables is added which imposes both a memory
2134 overhead as well as slower TLB fault handling.
2139 prompt "Kernel page size"
2140 default PAGE_SIZE_4KB
2142 config PAGE_SIZE_4KB
2144 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2146 This option select the standard 4kB Linux page size. On some
2147 R3000-family processors this is the only available page size. Using
2148 4kB page size will minimize memory consumption and is therefore
2149 recommended for low memory systems.
2151 config PAGE_SIZE_8KB
2153 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2154 depends on !MIPS_VA_BITS_48
2156 Using 8kB page size will result in higher performance kernel at
2157 the price of higher memory consumption. This option is available
2158 only on R8000 and cnMIPS processors. Note that you will need a
2159 suitable Linux distribution to support this.
2161 config PAGE_SIZE_16KB
2163 depends on !CPU_R3000 && !CPU_TX39XX
2165 Using 16kB page size will result in higher performance kernel at
2166 the price of higher memory consumption. This option is available on
2167 all non-R3000 family processors. Note that you will need a suitable
2168 Linux distribution to support this.
2170 config PAGE_SIZE_32KB
2172 depends on CPU_CAVIUM_OCTEON
2173 depends on !MIPS_VA_BITS_48
2175 Using 32kB page size will result in higher performance kernel at
2176 the price of higher memory consumption. This option is available
2177 only on cnMIPS cores. Note that you will need a suitable Linux
2178 distribution to support this.
2180 config PAGE_SIZE_64KB
2182 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2184 Using 64kB page size will result in higher performance kernel at
2185 the price of higher memory consumption. This option is available on
2186 all non-R3000 family processor. Not that at the time of this
2187 writing this option is still high experimental.
2191 config FORCE_MAX_ZONEORDER
2192 int "Maximum zone order"
2193 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2194 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2195 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2196 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2197 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2198 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2202 The kernel memory allocator divides physically contiguous memory
2203 blocks into "zones", where each zone is a power of two number of
2204 pages. This option selects the largest power of two that the kernel
2205 keeps in the memory allocator. If you need to allocate very large
2206 blocks of physically contiguous memory, then you may need to
2207 increase this value.
2209 This config option is actually maximum order plus one. For example,
2210 a value of 11 means that the largest free memory block is 2^10 pages.
2212 The page size is not necessarily 4KB. Keep this in mind
2213 when choosing a value for this option.
2218 config IP22_CPU_SCACHE
2223 # Support for a MIPS32 / MIPS64 style S-caches
2225 config MIPS_CPU_SCACHE
2229 config R5000_CPU_SCACHE
2233 config RM7000_CPU_SCACHE
2237 config SIBYTE_DMA_PAGEOPS
2238 bool "Use DMA to clear/copy pages"
2241 Instead of using the CPU to zero and copy pages, use a Data Mover
2242 channel. These DMA channels are otherwise unused by the standard
2243 SiByte Linux port. Seems to give a small performance benefit.
2245 config CPU_HAS_PREFETCH
2248 config CPU_GENERIC_DUMP_TLB
2250 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2254 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2256 config CPU_R4K_CACHE_TLB
2258 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2261 bool "MIPS MT SMP support (1 TC on each available VPE)"
2262 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2263 select CPU_MIPSR2_IRQ_VI
2264 select CPU_MIPSR2_IRQ_EI
2269 select SYS_SUPPORTS_SMP
2270 select SYS_SUPPORTS_SCHED_SMT
2271 select MIPS_PERF_SHARED_TC_COUNTERS
2273 This is a kernel model which is known as SMVP. This is supported
2274 on cores with the MT ASE and uses the available VPEs to implement
2275 virtual processors which supports SMP. This is equivalent to the
2276 Intel Hyperthreading feature. For further information go to
2277 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2283 bool "SMT (multithreading) scheduler support"
2284 depends on SYS_SUPPORTS_SCHED_SMT
2287 SMT scheduler support improves the CPU scheduler's decision making
2288 when dealing with MIPS MT enabled cores at a cost of slightly
2289 increased overhead in some places. If unsure say N here.
2291 config SYS_SUPPORTS_SCHED_SMT
2294 config SYS_SUPPORTS_MULTITHREADING
2297 config MIPS_MT_FPAFF
2298 bool "Dynamic FPU affinity for FP-intensive threads"
2300 depends on MIPS_MT_SMP
2302 config MIPSR2_TO_R6_EMULATOR
2303 bool "MIPS R2-to-R6 emulator"
2304 depends on CPU_MIPSR6
2307 Choose this option if you want to run non-R6 MIPS userland code.
2308 Even if you say 'Y' here, the emulator will still be disabled by
2309 default. You can enable it using the 'mipsr2emu' kernel option.
2310 The only reason this is a build-time option is to save ~14K from the
2313 config MIPS_VPE_LOADER
2314 bool "VPE loader support."
2315 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2316 select CPU_MIPSR2_IRQ_VI
2317 select CPU_MIPSR2_IRQ_EI
2320 Includes a loader for loading an elf relocatable object
2321 onto another VPE and running it.
2323 config MIPS_VPE_LOADER_CMP
2326 depends on MIPS_VPE_LOADER && MIPS_CMP
2328 config MIPS_VPE_LOADER_MT
2331 depends on MIPS_VPE_LOADER && !MIPS_CMP
2333 config MIPS_VPE_LOADER_TOM
2334 bool "Load VPE program into memory hidden from linux"
2335 depends on MIPS_VPE_LOADER
2338 The loader can use memory that is present but has been hidden from
2339 Linux using the kernel command line option "mem=xxMB". It's up to
2340 you to ensure the amount you put in the option and the space your
2341 program requires is less or equal to the amount physically present.
2343 config MIPS_VPE_APSP_API
2344 bool "Enable support for AP/SP API (RTLX)"
2345 depends on MIPS_VPE_LOADER
2348 config MIPS_VPE_APSP_API_CMP
2351 depends on MIPS_VPE_APSP_API && MIPS_CMP
2353 config MIPS_VPE_APSP_API_MT
2356 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2359 bool "MIPS CMP framework support (DEPRECATED)"
2360 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2363 select SYS_SUPPORTS_SMP
2364 select WEAK_ORDERING
2367 Select this if you are using a bootloader which implements the "CMP
2368 framework" protocol (ie. YAMON) and want your kernel to make use of
2369 its ability to start secondary CPUs.
2371 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2375 bool "MIPS Coherent Processing System support"
2376 depends on SYS_SUPPORTS_MIPS_CPS
2379 select MIPS_CPS_PM if HOTPLUG_CPU
2381 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2382 select SYS_SUPPORTS_HOTPLUG_CPU
2383 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2384 select SYS_SUPPORTS_SMP
2385 select WEAK_ORDERING
2387 Select this if you wish to run an SMP kernel across multiple cores
2388 within a MIPS Coherent Processing System. When this option is
2389 enabled the kernel will probe for other cores and boot them with
2390 no external assistance. It is safe to enable this when hardware
2391 support is unavailable.
2404 config SB1_PASS_2_WORKAROUNDS
2406 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2409 config SB1_PASS_2_1_WORKAROUNDS
2411 depends on CPU_SB1 && CPU_SB1_PASS_2
2415 config ARCH_PHYS_ADDR_T_64BIT
2419 prompt "SmartMIPS or microMIPS ASE support"
2421 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2424 Select this if you want neither microMIPS nor SmartMIPS support
2426 config CPU_HAS_SMARTMIPS
2427 depends on SYS_SUPPORTS_SMARTMIPS
2430 SmartMIPS is a extension of the MIPS32 architecture aimed at
2431 increased security at both hardware and software level for
2432 smartcards. Enabling this option will allow proper use of the
2433 SmartMIPS instructions by Linux applications. However a kernel with
2434 this option will not work on a MIPS core without SmartMIPS core. If
2435 you don't know you probably don't have SmartMIPS and should say N
2438 config CPU_MICROMIPS
2439 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2442 When this option is enabled the kernel will be built using the
2448 bool "Support for the MIPS SIMD Architecture"
2449 depends on CPU_SUPPORTS_MSA
2450 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2452 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2453 and a set of SIMD instructions to operate on them. When this option
2454 is enabled the kernel will support allocating & switching MSA
2455 vector register contexts. If you know that your kernel will only be
2456 running on CPUs which do not support MSA or that your userland will
2457 not be making use of it then you may wish to say N here to reduce
2458 the size & complexity of your kernel.
2472 # Vectored interrupt mode is an R2 feature
2474 config CPU_MIPSR2_IRQ_VI
2478 # Extended interrupt mode is an R2 feature
2480 config CPU_MIPSR2_IRQ_EI
2485 depends on !CPU_R3000
2491 config CPU_DADDI_WORKAROUNDS
2494 config CPU_R4000_WORKAROUNDS
2496 select CPU_R4400_WORKAROUNDS
2498 config CPU_R4400_WORKAROUNDS
2501 config MIPS_ASID_SHIFT
2503 default 6 if CPU_R3000 || CPU_TX39XX
2504 default 4 if CPU_R8000
2507 config MIPS_ASID_BITS
2509 default 0 if MIPS_ASID_BITS_VARIABLE
2510 default 6 if CPU_R3000 || CPU_TX39XX
2513 config MIPS_ASID_BITS_VARIABLE
2517 # - Highmem only makes sense for the 32-bit kernel.
2518 # - The current highmem code will only work properly on physically indexed
2519 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2520 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2521 # moment we protect the user and offer the highmem option only on machines
2522 # where it's known to be safe. This will not offer highmem on a few systems
2523 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2524 # indexed CPUs but we're playing safe.
2525 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2526 # know they might have memory configurations that could make use of highmem
2530 bool "High Memory Support"
2531 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2533 config CPU_SUPPORTS_HIGHMEM
2536 config SYS_SUPPORTS_HIGHMEM
2539 config SYS_SUPPORTS_SMARTMIPS
2542 config SYS_SUPPORTS_MICROMIPS
2545 config SYS_SUPPORTS_MIPS16
2548 This option must be set if a kernel might be executed on a MIPS16-
2549 enabled CPU even if MIPS16 is not actually being used. In other
2550 words, it makes the kernel MIPS16-tolerant.
2552 config CPU_SUPPORTS_MSA
2555 config ARCH_FLATMEM_ENABLE
2557 depends on !NUMA && !CPU_LOONGSON2
2559 config ARCH_DISCONTIGMEM_ENABLE
2561 default y if SGI_IP27
2563 Say Y to support efficient handling of discontiguous physical memory,
2564 for architectures which are either NUMA (Non-Uniform Memory Access)
2565 or have huge holes in the physical address space for other reasons.
2566 See <file:Documentation/vm/numa> for more.
2568 config ARCH_SPARSEMEM_ENABLE
2570 select SPARSEMEM_STATIC
2574 depends on SYS_SUPPORTS_NUMA
2576 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2577 Access). This option improves performance on systems with more
2578 than two nodes; on two node systems it is generally better to
2579 leave it disabled; on single node systems disable this option
2582 config SYS_SUPPORTS_NUMA
2586 bool "Relocatable kernel"
2587 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2589 This builds a kernel image that retains relocation information
2590 so it can be loaded someplace besides the default 1MB.
2591 The relocations make the kernel binary about 15% larger,
2592 but are discarded at runtime
2594 config RELOCATION_TABLE_SIZE
2595 hex "Relocation table size"
2596 depends on RELOCATABLE
2597 range 0x0 0x01000000
2598 default "0x00100000"
2600 A table of relocation data will be appended to the kernel binary
2601 and parsed at boot to fix up the relocated kernel.
2603 This option allows the amount of space reserved for the table to be
2604 adjusted, although the default of 1Mb should be ok in most cases.
2606 The build will fail and a valid size suggested if this is too small.
2608 If unsure, leave at the default value.
2610 config RANDOMIZE_BASE
2611 bool "Randomize the address of the kernel image"
2612 depends on RELOCATABLE
2614 Randomizes the physical and virtual address at which the
2615 kernel image is loaded, as a security feature that
2616 deters exploit attempts relying on knowledge of the location
2617 of kernel internals.
2619 Entropy is generated using any coprocessor 0 registers available.
2621 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2625 config RANDOMIZE_BASE_MAX_OFFSET
2626 hex "Maximum kASLR offset" if EXPERT
2627 depends on RANDOMIZE_BASE
2628 range 0x0 0x40000000 if EVA || 64BIT
2629 range 0x0 0x08000000
2630 default "0x01000000"
2632 When kASLR is active, this provides the maximum offset that will
2633 be applied to the kernel image. It should be set according to the
2634 amount of physical RAM available in the target system minus
2635 PHYSICAL_START and must be a power of 2.
2637 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2638 EVA or 64-bit. The default is 16Mb.
2643 depends on NEED_MULTIPLE_NODES
2645 config HW_PERF_EVENTS
2646 bool "Enable hardware performance counter support for perf events"
2647 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2650 Enable hardware performance counter support for perf events. If
2651 disabled, perf events will use software events only.
2656 bool "Multi-Processing support"
2657 depends on SYS_SUPPORTS_SMP
2659 This enables support for systems with more than one CPU. If you have
2660 a system with only one CPU, say N. If you have a system with more
2661 than one CPU, say Y.
2663 If you say N here, the kernel will run on uni- and multiprocessor
2664 machines, but will use only one CPU of a multiprocessor machine. If
2665 you say Y here, the kernel will run on many, but not all,
2666 uniprocessor machines. On a uniprocessor machine, the kernel
2667 will run faster if you say N here.
2669 People using multiprocessor machines who say Y here should also say
2670 Y to "Enhanced Real Time Clock Support", below.
2672 See also the SMP-HOWTO available at
2673 <http://www.tldp.org/docs.html#howto>.
2675 If you don't know what to do here, say N.
2678 bool "Support for hot-pluggable CPUs"
2679 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2681 Say Y here to allow turning CPUs off and on. CPUs can be
2682 controlled through /sys/devices/system/cpu.
2683 (Note: power management support will enable this option
2684 automatically on SMP systems. )
2685 Say N if you want to disable CPU hotplug.
2690 config SYS_SUPPORTS_MIPS_CMP
2693 config SYS_SUPPORTS_MIPS_CPS
2696 config SYS_SUPPORTS_SMP
2699 config NR_CPUS_DEFAULT_4
2702 config NR_CPUS_DEFAULT_8
2705 config NR_CPUS_DEFAULT_16
2708 config NR_CPUS_DEFAULT_32
2711 config NR_CPUS_DEFAULT_64
2715 int "Maximum number of CPUs (2-256)"
2718 default "4" if NR_CPUS_DEFAULT_4
2719 default "8" if NR_CPUS_DEFAULT_8
2720 default "16" if NR_CPUS_DEFAULT_16
2721 default "32" if NR_CPUS_DEFAULT_32
2722 default "64" if NR_CPUS_DEFAULT_64
2724 This allows you to specify the maximum number of CPUs which this
2725 kernel will support. The maximum supported value is 32 for 32-bit
2726 kernel and 64 for 64-bit kernels; the minimum value which makes
2727 sense is 1 for Qemu (useful only for kernel debugging purposes)
2728 and 2 for all others.
2730 This is purely to save memory - each supported CPU adds
2731 approximately eight kilobytes to the kernel image. For best
2732 performance should round up your number of processors to the next
2735 config MIPS_PERF_SHARED_TC_COUNTERS
2739 # Timer Interrupt Frequency Configuration
2743 prompt "Timer frequency"
2746 Allows the configuration of the timer frequency.
2749 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2752 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2755 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2758 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2761 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2764 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2767 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2770 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2774 config SYS_SUPPORTS_24HZ
2777 config SYS_SUPPORTS_48HZ
2780 config SYS_SUPPORTS_100HZ
2783 config SYS_SUPPORTS_128HZ
2786 config SYS_SUPPORTS_250HZ
2789 config SYS_SUPPORTS_256HZ
2792 config SYS_SUPPORTS_1000HZ
2795 config SYS_SUPPORTS_1024HZ
2798 config SYS_SUPPORTS_ARBIT_HZ
2800 default y if !SYS_SUPPORTS_24HZ && \
2801 !SYS_SUPPORTS_48HZ && \
2802 !SYS_SUPPORTS_100HZ && \
2803 !SYS_SUPPORTS_128HZ && \
2804 !SYS_SUPPORTS_250HZ && \
2805 !SYS_SUPPORTS_256HZ && \
2806 !SYS_SUPPORTS_1000HZ && \
2807 !SYS_SUPPORTS_1024HZ
2813 default 100 if HZ_100
2814 default 128 if HZ_128
2815 default 250 if HZ_250
2816 default 256 if HZ_256
2817 default 1000 if HZ_1000
2818 default 1024 if HZ_1024
2821 def_bool HIGH_RES_TIMERS
2823 source "kernel/Kconfig.preempt"
2826 bool "Kexec system call"
2829 kexec is a system call that implements the ability to shutdown your
2830 current kernel, and to start another kernel. It is like a reboot
2831 but it is independent of the system firmware. And like a reboot
2832 you can start any kernel with it, not just Linux.
2834 The name comes from the similarity to the exec system call.
2836 It is an ongoing process to be certain the hardware in a machine
2837 is properly shutdown, so do not be surprised if this code does not
2838 initially work for you. As of this writing the exact hardware
2839 interface is strongly in flux, so no good recommendation can be
2843 bool "Kernel crash dumps"
2845 Generate crash dump after being started by kexec.
2846 This should be normally only set in special crash dump kernels
2847 which are loaded in the main kernel with kexec-tools into
2848 a specially reserved region and then later executed after
2849 a crash by kdump/kexec. The crash dump kernel must be compiled
2850 to a memory address not used by the main kernel or firmware using
2853 config PHYSICAL_START
2854 hex "Physical address where the kernel is loaded"
2855 default "0xffffffff84000000" if 64BIT
2856 default "0x84000000" if 32BIT
2857 depends on CRASH_DUMP
2859 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2860 If you plan to use kernel for capturing the crash dump change
2861 this value to start of the reserved region (the "X" value as
2862 specified in the "crashkernel=YM@XM" command line boot parameter
2863 passed to the panic-ed kernel).
2866 bool "Enable seccomp to safely compute untrusted bytecode"
2870 This kernel feature is useful for number crunching applications
2871 that may need to compute untrusted bytecode during their
2872 execution. By using pipes or other transports made available to
2873 the process as file descriptors supporting the read/write
2874 syscalls, it's possible to isolate those applications in
2875 their own address space using seccomp. Once seccomp is
2876 enabled via /proc/<pid>/seccomp, it cannot be disabled
2877 and the task is only allowed to execute a few safe syscalls
2878 defined by each seccomp mode.
2880 If unsure, say Y. Only embedded should say N here.
2882 config MIPS_O32_FP64_SUPPORT
2883 bool "Support for O32 binaries using 64-bit FP"
2884 depends on 32BIT || MIPS32_O32
2886 When this is enabled, the kernel will support use of 64-bit floating
2887 point registers with binaries using the O32 ABI along with the
2888 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2889 32-bit MIPS systems this support is at the cost of increasing the
2890 size and complexity of the compiled FPU emulator. Thus if you are
2891 running a MIPS32 system and know that none of your userland binaries
2892 will require 64-bit floating point, you may wish to reduce the size
2893 of your kernel & potentially improve FP emulation performance by
2896 Although binutils currently supports use of this flag the details
2897 concerning its effect upon the O32 ABI in userland are still being
2898 worked on. In order to avoid userland becoming dependant upon current
2899 behaviour before the details have been finalised, this option should
2900 be considered experimental and only enabled by those working upon
2908 select OF_EARLY_FLATTREE
2915 prompt "Kernel appended dtb support" if USE_OF
2916 default MIPS_NO_APPENDED_DTB
2918 config MIPS_NO_APPENDED_DTB
2921 Do not enable appended dtb support.
2923 config MIPS_ELF_APPENDED_DTB
2926 With this option, the boot code will look for a device tree binary
2927 DTB) included in the vmlinux ELF section .appended_dtb. By default
2928 it is empty and the DTB can be appended using binutils command
2931 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2933 This is meant as a backward compatiblity convenience for those
2934 systems with a bootloader that can't be upgraded to accommodate
2935 the documented boot protocol using a device tree.
2937 config MIPS_RAW_APPENDED_DTB
2938 bool "vmlinux.bin or vmlinuz.bin"
2940 With this option, the boot code will look for a device tree binary
2941 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2942 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2944 This is meant as a backward compatibility convenience for those
2945 systems with a bootloader that can't be upgraded to accommodate
2946 the documented boot protocol using a device tree.
2948 Beware that there is very little in terms of protection against
2949 this option being confused by leftover garbage in memory that might
2950 look like a DTB header after a reboot if no actual DTB is appended
2951 to vmlinux.bin. Do not leave this option active in a production kernel
2952 if you don't intend to always append a DTB.
2956 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2957 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2960 default MIPS_CMDLINE_FROM_BOOTLOADER
2962 config MIPS_CMDLINE_FROM_DTB
2964 bool "Dtb kernel arguments if available"
2966 config MIPS_CMDLINE_DTB_EXTEND
2968 bool "Extend dtb kernel arguments with bootloader arguments"
2970 config MIPS_CMDLINE_FROM_BOOTLOADER
2971 bool "Bootloader kernel arguments if available"
2973 config MIPS_CMDLINE_BUILTIN_EXTEND
2974 depends on CMDLINE_BOOL
2975 bool "Extend builtin kernel arguments with bootloader arguments"
2980 config LOCKDEP_SUPPORT
2984 config STACKTRACE_SUPPORT
2988 config HAVE_LATENCYTOP_SUPPORT
2992 config PGTABLE_LEVELS
2994 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2995 default 3 if 64BIT && !PAGE_SIZE_64KB
2998 source "init/Kconfig"
3000 source "kernel/Kconfig.freezer"
3002 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3010 bool "Support for PCI controller"
3011 depends on HW_HAS_PCI
3014 Find out whether you have a PCI motherboard. PCI is the name of a
3015 bus system, i.e. the way the CPU talks to the other stuff inside
3016 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3020 bool "Support for HT-linked PCI"
3022 depends on CPU_LOONGSON3
3026 Loongson family machines use Hyper-Transport bus for inter-core
3027 connection and device connection. The PCI bus is a subordinate
3028 linked at HT. Choose Y for Loongson-3 based machines.
3033 config PCI_DOMAINS_GENERIC
3036 config PCI_DRIVERS_GENERIC
3037 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3040 config PCI_DRIVERS_LEGACY
3041 def_bool !PCI_DRIVERS_GENERIC
3042 select NO_GENERIC_PCI_IOPORT_MAP
3044 source "drivers/pci/Kconfig"
3047 # ISA support is now enabled via select. Too many systems still have the one
3048 # or other ISA chip on the board that users don't know about so don't expect
3049 # users to choose the right thing ...
3056 depends on HW_HAS_EISA
3058 select GENERIC_ISA_DMA
3060 The Extended Industry Standard Architecture (EISA) bus was
3061 developed as an open alternative to the IBM MicroChannel bus.
3063 The EISA bus provided some of the features of the IBM MicroChannel
3064 bus while maintaining backward compatibility with cards made for
3065 the older ISA bus. The EISA bus saw limited use between 1988 and
3066 1995 when it was made obsolete by the PCI bus.
3068 Say Y here if you are building a kernel for an EISA-based machine.
3072 source "drivers/eisa/Kconfig"
3075 bool "TURBOchannel support"
3076 depends on MACH_DECSTATION
3078 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3079 processors. TURBOchannel programming specifications are available
3081 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3083 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3084 Linux driver support status is documented at:
3085 <http://www.linux-mips.org/wiki/DECstation>
3091 config ARCH_MMAP_RND_BITS_MIN
3095 config ARCH_MMAP_RND_BITS_MAX
3099 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3102 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3109 select MIPS_EXTERNAL_TIMER
3117 source "drivers/pcmcia/Kconfig"
3120 tristate "RapidIO support"
3124 If you say Y here, the kernel will include drivers and
3125 infrastructure code to support RapidIO interconnect devices.
3127 source "drivers/rapidio/Kconfig"
3131 menu "Executable file formats"
3133 source "fs/Kconfig.binfmt"
3138 config MIPS32_COMPAT
3144 config SYSVIPC_COMPAT
3148 bool "Kernel support for o32 binaries"
3150 select ARCH_WANT_OLD_COMPAT_IPC
3152 select MIPS32_COMPAT
3153 select SYSVIPC_COMPAT if SYSVIPC
3155 Select this option if you want to run o32 binaries. These are pure
3156 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3157 existing binaries are in this format.
3162 bool "Kernel support for n32 binaries"
3165 select MIPS32_COMPAT
3166 select SYSVIPC_COMPAT if SYSVIPC
3168 Select this option if you want to run n32 binaries. These are
3169 64-bit binaries using 32-bit quantities for addressing and certain
3170 data that would normally be 64-bit. They are used in special
3177 default y if MIPS32_O32 || MIPS32_N32
3182 menu "Power management options"
3184 config ARCH_HIBERNATION_POSSIBLE
3186 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3188 config ARCH_SUSPEND_POSSIBLE
3190 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3192 source "kernel/power/Kconfig"
3196 config MIPS_EXTERNAL_TIMER
3199 menu "CPU Power Management"
3201 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3202 source "drivers/cpufreq/Kconfig"
3205 source "drivers/cpuidle/Kconfig"
3209 source "net/Kconfig"
3211 source "drivers/Kconfig"
3213 source "drivers/firmware/Kconfig"
3217 source "arch/mips/Kconfig.debug"
3219 source "security/Kconfig"
3221 source "crypto/Kconfig"
3223 source "lib/Kconfig"
3225 source "arch/mips/kvm/Kconfig"