4 select ARCH_SUPPORTS_UPROBES
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
8 select ARCH_USE_BUILTIN_BSWAP
9 select HAVE_CONTEXT_TRACKING
10 select HAVE_GENERIC_DMA_COHERENT
13 select HAVE_PERF_EVENTS
14 select PERF_USE_VMALLOC
16 select HAVE_ARCH_SECCOMP_FILTER
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_BPF_JIT if !CPU_MICROMIPS
19 select HAVE_FUNCTION_TRACER
20 select HAVE_DYNAMIC_FTRACE
21 select HAVE_FTRACE_MCOUNT_RECORD
22 select HAVE_C_RECORDMCOUNT
23 select HAVE_FUNCTION_GRAPH_TRACER
25 select HAVE_KRETPROBES
26 select HAVE_SYSCALL_TRACEPOINTS
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_SYSCALL_TRACEPOINTS
29 select ARCH_HAS_ELF_RANDOMIZE
30 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
31 select RTC_LIB if !MACH_LOONGSON64
32 select GENERIC_ATOMIC64 if !64BIT
33 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
34 select HAVE_DMA_CONTIGUOUS
35 select HAVE_DMA_API_DEBUG
36 select GENERIC_IRQ_PROBE
37 select GENERIC_IRQ_SHOW
38 select GENERIC_PCI_IOMAP
39 select HAVE_ARCH_JUMP_LABEL
40 select ARCH_WANT_IPC_PARSE_VERSION
41 select IRQ_FORCED_THREADING
43 select HAVE_MEMBLOCK_NODE_MAP
44 select ARCH_DISCARD_MEMBLOCK
45 select GENERIC_SMP_IDLE_THREAD
46 select BUILDTIME_EXTABLE_SORT
47 select GENERIC_CLOCKEVENTS
48 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
49 select GENERIC_CMOS_UPDATE
50 select HAVE_MOD_ARCH_SPECIFIC
52 select MODULES_USE_ELF_REL if MODULES
53 select MODULES_USE_ELF_RELA if MODULES && 64BIT
54 select CLONE_BACKWARDS
55 select HAVE_DEBUG_STACKOVERFLOW
56 select HAVE_CC_STACKPROTECTOR
57 select CPU_PM if CPU_IDLE
58 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
59 select ARCH_BINFMT_ELF_STATE
60 select SYSCTL_EXCEPTION_TRACE
61 select HAVE_VIRT_CPU_ACCOUNTING_GEN
62 select HAVE_IRQ_TIME_ACCOUNTING
63 select GENERIC_TIME_VSYSCALL
64 select ARCH_CLOCKSOURCE_DATA
65 select HANDLE_DOMAIN_IRQ
67 menu "Machine selection"
74 bool "Alchemy processor based machines"
75 select ARCH_PHYS_ADDR_T_64BIT
79 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
80 select SYS_HAS_CPU_MIPS32_R1
81 select SYS_SUPPORTS_32BIT_KERNEL
82 select SYS_SUPPORTS_APM_EMULATION
83 select ARCH_REQUIRE_GPIOLIB
84 select SYS_SUPPORTS_ZBOOT
88 bool "Texas Instruments AR7"
90 select DMA_NONCOHERENT
96 select SYS_HAS_CPU_MIPS32_R1
97 select SYS_HAS_EARLY_PRINTK
98 select SYS_SUPPORTS_32BIT_KERNEL
99 select SYS_SUPPORTS_LITTLE_ENDIAN
100 select SYS_SUPPORTS_MIPS16
101 select SYS_SUPPORTS_ZBOOT_UART16550
102 select ARCH_REQUIRE_GPIOLIB
106 Support for the Texas Instruments AR7 System-on-a-Chip
107 family: TNETD7100, 7200 and 7300.
110 bool "Atheros AR231x/AR531x SoC support"
113 select DMA_NONCOHERENT
116 select SYS_HAS_CPU_MIPS32_R1
117 select SYS_SUPPORTS_BIG_ENDIAN
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_HAS_EARLY_PRINTK
121 Support for Atheros AR231x and Atheros AR531x based boards
124 bool "Atheros AR71XX/AR724X/AR913X based boards"
125 select ARCH_HAS_RESET_CONTROLLER
126 select ARCH_REQUIRE_GPIOLIB
130 select DMA_NONCOHERENT
136 select SYS_HAS_CPU_MIPS32_R2
137 select SYS_HAS_EARLY_PRINTK
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_BIG_ENDIAN
140 select SYS_SUPPORTS_MIPS16
141 select SYS_SUPPORTS_ZBOOT_UART_PROM
144 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
147 bool "Broadcom Generic BMIPS kernel"
149 select NO_EXCEPT_FILL
155 select BCM6345_L1_IRQ
156 select BCM7038_L1_IRQ
157 select BCM7120_L2_IRQ
158 select BRCMSTB_L2_IRQ
160 select DMA_NONCOHERENT
161 select SYS_SUPPORTS_32BIT_KERNEL
162 select SYS_SUPPORTS_LITTLE_ENDIAN
163 select SYS_SUPPORTS_BIG_ENDIAN
164 select SYS_SUPPORTS_HIGHMEM
165 select SYS_HAS_CPU_BMIPS32_3300
166 select SYS_HAS_CPU_BMIPS4350
167 select SYS_HAS_CPU_BMIPS4380
168 select SYS_HAS_CPU_BMIPS5000
170 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
171 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
172 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
173 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
174 select ARCH_WANT_OPTIONAL_GPIOLIB
176 Build a generic DT-based kernel image that boots on select
177 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
178 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
179 must be set appropriately for your board.
182 bool "Broadcom BCM47XX based boards"
183 select ARCH_WANT_OPTIONAL_GPIOLIB
187 select DMA_NONCOHERENT
190 select SYS_HAS_CPU_MIPS32_R1
191 select NO_EXCEPT_FILL
192 select SYS_SUPPORTS_32BIT_KERNEL
193 select SYS_SUPPORTS_LITTLE_ENDIAN
194 select SYS_SUPPORTS_MIPS16
195 select SYS_HAS_EARLY_PRINTK
196 select USE_GENERIC_EARLY_PRINTK_8250
198 select LEDS_GPIO_REGISTER
202 Support for BCM47XX based boards
205 bool "Broadcom BCM63XX based boards"
210 select DMA_NONCOHERENT
212 select SYS_SUPPORTS_32BIT_KERNEL
213 select SYS_SUPPORTS_BIG_ENDIAN
214 select SYS_HAS_EARLY_PRINTK
216 select ARCH_REQUIRE_GPIOLIB
218 select MIPS_L1_CACHE_SHIFT_4
220 Support for BCM63XX based boards
227 select DMA_NONCOHERENT
233 select PCI_GT64XXX_PCI0
235 select SYS_HAS_CPU_NEVADA
236 select SYS_HAS_EARLY_PRINTK
237 select SYS_SUPPORTS_32BIT_KERNEL
238 select SYS_SUPPORTS_64BIT_KERNEL
239 select SYS_SUPPORTS_LITTLE_ENDIAN
240 select USE_GENERIC_EARLY_PRINTK_8250
242 config MACH_DECSTATION
246 select CEVT_R4K if CPU_R4X00
248 select CSRC_R4K if CPU_R4X00
249 select CPU_DADDI_WORKAROUNDS if 64BIT
250 select CPU_R4000_WORKAROUNDS if 64BIT
251 select CPU_R4400_WORKAROUNDS if 64BIT
252 select DMA_NONCOHERENT
255 select SYS_HAS_CPU_R3000
256 select SYS_HAS_CPU_R4X00
257 select SYS_SUPPORTS_32BIT_KERNEL
258 select SYS_SUPPORTS_64BIT_KERNEL
259 select SYS_SUPPORTS_LITTLE_ENDIAN
260 select SYS_SUPPORTS_128HZ
261 select SYS_SUPPORTS_256HZ
262 select SYS_SUPPORTS_1024HZ
263 select MIPS_L1_CACHE_SHIFT_4
265 This enables support for DEC's MIPS based workstations. For details
266 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
267 DECstation porting pages on <http://decstation.unix-ag.org/>.
269 If you have one of the following DECstation Models you definitely
270 want to choose R4xx0 for the CPU Type:
277 otherwise choose R3000.
280 bool "Jazz family of machines"
283 select ARCH_MAY_HAVE_PC_FDC
286 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
287 select GENERIC_ISA_DMA
288 select HAVE_PCSPKR_PLATFORM
293 select SYS_HAS_CPU_R4X00
294 select SYS_SUPPORTS_32BIT_KERNEL
295 select SYS_SUPPORTS_64BIT_KERNEL
296 select SYS_SUPPORTS_100HZ
298 This a family of machines based on the MIPS R4030 chipset which was
299 used by several vendors to build RISC/os and Windows NT workstations.
300 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
301 Olivetti M700-10 workstations.
304 bool "Ingenic SoC based machines"
305 select SYS_SUPPORTS_32BIT_KERNEL
306 select SYS_SUPPORTS_LITTLE_ENDIAN
307 select SYS_SUPPORTS_ZBOOT_UART16550
308 select DMA_NONCOHERENT
310 select ARCH_REQUIRE_GPIOLIB
312 select GENERIC_IRQ_CHIP
318 bool "Lantiq based platforms"
319 select DMA_NONCOHERENT
323 select SYS_HAS_CPU_MIPS32_R1
324 select SYS_HAS_CPU_MIPS32_R2
325 select SYS_SUPPORTS_BIG_ENDIAN
326 select SYS_SUPPORTS_32BIT_KERNEL
327 select SYS_SUPPORTS_MIPS16
328 select SYS_SUPPORTS_MULTITHREADING
329 select SYS_HAS_EARLY_PRINTK
330 select ARCH_REQUIRE_GPIOLIB
336 select PINCTRL_LANTIQ
337 select ARCH_HAS_RESET_CONTROLLER
338 select RESET_CONTROLLER
341 bool "LASAT Networks platforms"
345 select DMA_NONCOHERENT
346 select SYS_HAS_EARLY_PRINTK
349 select PCI_GT64XXX_PCI0
351 select R5000_CPU_SCACHE
352 select SYS_HAS_CPU_R5000
353 select SYS_SUPPORTS_32BIT_KERNEL
354 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
355 select SYS_SUPPORTS_LITTLE_ENDIAN
357 config MACH_LOONGSON32
358 bool "Loongson-1 family of machines"
359 select SYS_SUPPORTS_ZBOOT
361 This enables support for the Loongson-1 family of machines.
363 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
364 the Institute of Computing Technology (ICT), Chinese Academy of
367 config MACH_LOONGSON64
368 bool "Loongson-2/3 family of machines"
369 select SYS_SUPPORTS_ZBOOT
371 This enables the support of Loongson-2/3 family of machines.
373 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
374 family of multi-core CPUs. They are both 64-bit general-purpose
375 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
376 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
377 in the People's Republic of China. The chief architect is Professor
380 config MACH_PISTACHIO
381 bool "IMG Pistachio SoC based boards"
382 select ARCH_REQUIRE_GPIOLIB
386 select CLKSRC_MIPS_GIC
389 select DMA_MAYBE_COHERENT
393 select MIPS_CPU_SCACHE
397 select SYS_HAS_CPU_MIPS32_R2
398 select SYS_SUPPORTS_32BIT_KERNEL
399 select SYS_SUPPORTS_LITTLE_ENDIAN
400 select SYS_SUPPORTS_MIPS_CPS
401 select SYS_SUPPORTS_MULTITHREADING
402 select SYS_SUPPORTS_ZBOOT
403 select SYS_HAS_EARLY_PRINTK
404 select USE_GENERIC_EARLY_PRINTK_8250
407 This enables support for the IMG Pistachio SoC platform.
410 bool "MIPSfpga Xilinx based boards"
411 select ARCH_REQUIRE_GPIOLIB
420 select MIPS_CPU_SCACHE
421 select SYS_HAS_EARLY_PRINTK
422 select SYS_HAS_CPU_MIPS32_R2
423 select SYS_SUPPORTS_32BIT_KERNEL
424 select SYS_SUPPORTS_LITTLE_ENDIAN
425 select SYS_SUPPORTS_ZBOOT_UART16550
427 select USE_GENERIC_EARLY_PRINTK_8250
429 This enables support for the IMG University Program MIPSfpga platform.
432 bool "MIPS Malta board"
433 select ARCH_MAY_HAVE_PC_FDC
439 select CLKSRC_MIPS_GIC
441 select DMA_MAYBE_COHERENT
442 select GENERIC_ISA_DMA
443 select HAVE_PCSPKR_PLATFORM
450 select MIPS_CPU_SCACHE
451 select MIPS_L1_CACHE_SHIFT_6
452 select PCI_GT64XXX_PCI0
456 select SYS_HAS_CPU_MIPS32_R1
457 select SYS_HAS_CPU_MIPS32_R2
458 select SYS_HAS_CPU_MIPS32_R3_5
459 select SYS_HAS_CPU_MIPS32_R5
460 select SYS_HAS_CPU_MIPS32_R6
461 select SYS_HAS_CPU_MIPS64_R1
462 select SYS_HAS_CPU_MIPS64_R2
463 select SYS_HAS_CPU_MIPS64_R6
464 select SYS_HAS_CPU_NEVADA
465 select SYS_HAS_CPU_RM7000
466 select SYS_SUPPORTS_32BIT_KERNEL
467 select SYS_SUPPORTS_64BIT_KERNEL
468 select SYS_SUPPORTS_BIG_ENDIAN
469 select SYS_SUPPORTS_HIGHMEM
470 select SYS_SUPPORTS_LITTLE_ENDIAN
471 select SYS_SUPPORTS_MICROMIPS
472 select SYS_SUPPORTS_MIPS_CMP
473 select SYS_SUPPORTS_MIPS_CPS
474 select SYS_SUPPORTS_MIPS16
475 select SYS_SUPPORTS_MULTITHREADING
476 select SYS_SUPPORTS_SMARTMIPS
477 select SYS_SUPPORTS_ZBOOT
478 select SYS_SUPPORTS_RELOCATABLE
480 select ZONE_DMA32 if 64BIT
484 This enables support for the MIPS Technologies Malta evaluation
488 bool "Microchip PIC32 Family"
490 This enables support for the Microchip PIC32 family of platforms.
492 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
496 bool "MIPS SEAD3 board"
502 select CLKSRC_MIPS_GIC
504 select CPU_MIPSR2_IRQ_VI
505 select CPU_MIPSR2_IRQ_EI
506 select DMA_NONCOHERENT
511 select SYS_HAS_CPU_MIPS32_R1
512 select SYS_HAS_CPU_MIPS32_R2
513 select SYS_HAS_CPU_MIPS32_R6
514 select SYS_HAS_CPU_MIPS64_R1
515 select SYS_HAS_EARLY_PRINTK
516 select SYS_SUPPORTS_32BIT_KERNEL
517 select SYS_SUPPORTS_64BIT_KERNEL
518 select SYS_SUPPORTS_BIG_ENDIAN
519 select SYS_SUPPORTS_LITTLE_ENDIAN
520 select SYS_SUPPORTS_SMARTMIPS
521 select SYS_SUPPORTS_MICROMIPS
522 select SYS_SUPPORTS_MIPS16
523 select SYS_SUPPORTS_RELOCATABLE
524 select USB_EHCI_BIG_ENDIAN_DESC
525 select USB_EHCI_BIG_ENDIAN_MMIO
528 This enables support for the MIPS Technologies SEAD3 evaluation
532 bool "NEC EMMA2RH Mark-eins board"
536 This enables support for the NEC Electronics Mark-eins boards.
539 bool "NEC VR4100 series based machines"
542 select SYS_HAS_CPU_VR41XX
543 select SYS_SUPPORTS_MIPS16
544 select ARCH_REQUIRE_GPIOLIB
547 bool "NXP STB220 board"
550 Support for NXP Semiconductors STB220 Development Board.
557 Support for NXP Semiconductors STB225 Development Board.
560 bool "PMC-Sierra MSP chipsets"
563 select DMA_NONCOHERENT
565 select NO_EXCEPT_FILL
567 select SYS_HAS_CPU_MIPS32_R1
568 select SYS_HAS_CPU_MIPS32_R2
569 select SYS_SUPPORTS_32BIT_KERNEL
570 select SYS_SUPPORTS_BIG_ENDIAN
571 select SYS_SUPPORTS_MIPS16
574 select SERIAL_8250_CONSOLE
575 select USB_EHCI_BIG_ENDIAN_MMIO
576 select USB_EHCI_BIG_ENDIAN_DESC
578 This adds support for the PMC-Sierra family of Multi-Service
579 Processor System-On-A-Chips. These parts include a number
580 of integrated peripherals, interfaces and DSPs in addition to
581 a variety of MIPS cores.
584 bool "Ralink based machines"
588 select DMA_NONCOHERENT
591 select SYS_HAS_CPU_MIPS32_R1
592 select SYS_HAS_CPU_MIPS32_R2
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_LITTLE_ENDIAN
595 select SYS_SUPPORTS_MIPS16
596 select SYS_HAS_EARLY_PRINTK
598 select ARCH_HAS_RESET_CONTROLLER
599 select RESET_CONTROLLER
602 bool "SGI IP22 (Indy/Indigo2)"
608 select DEFAULT_SGI_PARTITION
609 select DMA_NONCOHERENT
613 select IP22_CPU_SCACHE
615 select GENERIC_ISA_DMA_SUPPORT_BROKEN
617 select SGI_HAS_INDYDOG
623 select SYS_HAS_CPU_R4X00
624 select SYS_HAS_CPU_R5000
626 # Disable EARLY_PRINTK for now since it leads to overwritten prom
627 # memory during early boot on some machines.
629 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
630 # for a more details discussion
632 # select SYS_HAS_EARLY_PRINTK
633 select SYS_SUPPORTS_32BIT_KERNEL
634 select SYS_SUPPORTS_64BIT_KERNEL
635 select SYS_SUPPORTS_BIG_ENDIAN
636 select MIPS_L1_CACHE_SHIFT_7
638 This are the SGI Indy, Challenge S and Indigo2, as well as certain
639 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
640 that runs on these, say Y here.
643 bool "SGI IP27 (Origin200/2000)"
647 select DEFAULT_SGI_PARTITION
649 select SYS_HAS_EARLY_PRINTK
651 select NR_CPUS_DEFAULT_64
652 select SYS_HAS_CPU_R10000
653 select SYS_SUPPORTS_64BIT_KERNEL
654 select SYS_SUPPORTS_BIG_ENDIAN
655 select SYS_SUPPORTS_NUMA
656 select SYS_SUPPORTS_SMP
657 select MIPS_L1_CACHE_SHIFT_7
659 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
660 workstations. To compile a Linux kernel that runs on these, say Y
664 bool "SGI IP28 (Indigo2 R10k)"
670 select DEFAULT_SGI_PARTITION
671 select DMA_NONCOHERENT
672 select GENERIC_ISA_DMA_SUPPORT_BROKEN
678 select SGI_HAS_INDYDOG
684 select SYS_HAS_CPU_R10000
686 # Disable EARLY_PRINTK for now since it leads to overwritten prom
687 # memory during early boot on some machines.
689 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
690 # for a more details discussion
692 # select SYS_HAS_EARLY_PRINTK
693 select SYS_SUPPORTS_64BIT_KERNEL
694 select SYS_SUPPORTS_BIG_ENDIAN
695 select MIPS_L1_CACHE_SHIFT_7
697 This is the SGI Indigo2 with R10000 processor. To compile a Linux
698 kernel that runs on these, say Y here.
707 select DMA_NONCOHERENT
710 select R5000_CPU_SCACHE
711 select RM7000_CPU_SCACHE
712 select SYS_HAS_CPU_R5000
713 select SYS_HAS_CPU_R10000 if BROKEN
714 select SYS_HAS_CPU_RM7000
715 select SYS_HAS_CPU_NEVADA
716 select SYS_SUPPORTS_64BIT_KERNEL
717 select SYS_SUPPORTS_BIG_ENDIAN
719 If you want this kernel to run on SGI O2 workstation, say Y here.
722 bool "Sibyte BCM91120C-CRhine"
725 select SIBYTE_BCM1120
727 select SYS_HAS_CPU_SB1
728 select SYS_SUPPORTS_BIG_ENDIAN
729 select SYS_SUPPORTS_LITTLE_ENDIAN
732 bool "Sibyte BCM91120x-Carmel"
735 select SIBYTE_BCM1120
737 select SYS_HAS_CPU_SB1
738 select SYS_SUPPORTS_BIG_ENDIAN
739 select SYS_SUPPORTS_LITTLE_ENDIAN
742 bool "Sibyte BCM91125C-CRhone"
745 select SIBYTE_BCM1125
747 select SYS_HAS_CPU_SB1
748 select SYS_SUPPORTS_BIG_ENDIAN
749 select SYS_SUPPORTS_HIGHMEM
750 select SYS_SUPPORTS_LITTLE_ENDIAN
753 bool "Sibyte BCM91125E-Rhone"
756 select SIBYTE_BCM1125H
758 select SYS_HAS_CPU_SB1
759 select SYS_SUPPORTS_BIG_ENDIAN
760 select SYS_SUPPORTS_LITTLE_ENDIAN
763 bool "Sibyte BCM91250A-SWARM"
766 select HAVE_PATA_PLATFORM
769 select SYS_HAS_CPU_SB1
770 select SYS_SUPPORTS_BIG_ENDIAN
771 select SYS_SUPPORTS_HIGHMEM
772 select SYS_SUPPORTS_LITTLE_ENDIAN
773 select ZONE_DMA32 if 64BIT
775 config SIBYTE_LITTLESUR
776 bool "Sibyte BCM91250C2-LittleSur"
779 select HAVE_PATA_PLATFORM
782 select SYS_HAS_CPU_SB1
783 select SYS_SUPPORTS_BIG_ENDIAN
784 select SYS_SUPPORTS_HIGHMEM
785 select SYS_SUPPORTS_LITTLE_ENDIAN
787 config SIBYTE_SENTOSA
788 bool "Sibyte BCM91250E-Sentosa"
793 select SYS_HAS_CPU_SB1
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_LITTLE_ENDIAN
798 bool "Sibyte BCM91480B-BigSur"
801 select NR_CPUS_DEFAULT_4
802 select SIBYTE_BCM1x80
804 select SYS_HAS_CPU_SB1
805 select SYS_SUPPORTS_BIG_ENDIAN
806 select SYS_SUPPORTS_HIGHMEM
807 select SYS_SUPPORTS_LITTLE_ENDIAN
808 select ZONE_DMA32 if 64BIT
811 bool "SNI RM200/300/400"
812 select FW_ARC if CPU_LITTLE_ENDIAN
813 select FW_ARC32 if CPU_LITTLE_ENDIAN
814 select FW_SNIPROM if CPU_BIG_ENDIAN
815 select ARCH_MAY_HAVE_PC_FDC
819 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
820 select DMA_NONCOHERENT
821 select GENERIC_ISA_DMA
822 select HAVE_PCSPKR_PLATFORM
829 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
830 select SYS_HAS_CPU_R4X00
831 select SYS_HAS_CPU_R5000
832 select SYS_HAS_CPU_R10000
833 select R5000_CPU_SCACHE
834 select SYS_HAS_EARLY_PRINTK
835 select SYS_SUPPORTS_32BIT_KERNEL
836 select SYS_SUPPORTS_64BIT_KERNEL
837 select SYS_SUPPORTS_BIG_ENDIAN
838 select SYS_SUPPORTS_HIGHMEM
839 select SYS_SUPPORTS_LITTLE_ENDIAN
841 The SNI RM200/300/400 are MIPS-based machines manufactured by
842 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
843 Technology and now in turn merged with Fujitsu. Say Y here to
844 support this machine type.
847 bool "Toshiba TX39 series based machines"
850 bool "Toshiba TX49 series based machines"
852 config MIKROTIK_RB532
853 bool "Mikrotik RB532 boards"
856 select DMA_NONCOHERENT
859 select SYS_HAS_CPU_MIPS32_R1
860 select SYS_SUPPORTS_32BIT_KERNEL
861 select SYS_SUPPORTS_LITTLE_ENDIAN
864 select ARCH_REQUIRE_GPIOLIB
865 select MIPS_L1_CACHE_SHIFT_4
867 Support the Mikrotik(tm) RouterBoard 532 series,
868 based on the IDT RC32434 SoC.
870 config CAVIUM_OCTEON_SOC
871 bool "Cavium Networks Octeon SoC based boards"
873 select ARCH_PHYS_ADDR_T_64BIT
875 select SYS_SUPPORTS_64BIT_KERNEL
876 select SYS_SUPPORTS_BIG_ENDIAN
878 select EDAC_ATOMIC_SCRUB
879 select SYS_SUPPORTS_LITTLE_ENDIAN
880 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
881 select SYS_HAS_EARLY_PRINTK
882 select SYS_HAS_CPU_CAVIUM_OCTEON
887 select ARCH_REQUIRE_GPIOLIB
890 select ARCH_SPARSEMEM_ENABLE
891 select SYS_SUPPORTS_SMP
892 select NR_CPUS_DEFAULT_16
894 select MTD_COMPLEX_MAPPINGS
896 This option supports all of the Octeon reference boards from Cavium
897 Networks. It builds a kernel that dynamically determines the Octeon
898 CPU type and supports all known board reference implementations.
899 Some of the supported boards are:
906 Say Y here for most Octeon reference boards.
909 bool "Netlogic XLR/XLS based systems"
912 select SYS_HAS_CPU_XLR
913 select SYS_SUPPORTS_SMP
916 select SYS_SUPPORTS_32BIT_KERNEL
917 select SYS_SUPPORTS_64BIT_KERNEL
918 select ARCH_PHYS_ADDR_T_64BIT
919 select SYS_SUPPORTS_BIG_ENDIAN
920 select SYS_SUPPORTS_HIGHMEM
922 select NR_CPUS_DEFAULT_32
926 select ZONE_DMA32 if 64BIT
928 select SYS_HAS_EARLY_PRINTK
929 select SYS_SUPPORTS_ZBOOT
930 select SYS_SUPPORTS_ZBOOT_UART16550
932 Support for systems based on Netlogic XLR and XLS processors.
933 Say Y here if you have a XLR or XLS based board.
936 bool "Netlogic XLP based systems"
939 select SYS_HAS_CPU_XLP
940 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 ARCH_REQUIRE_GPIOLIB
946 select SYS_SUPPORTS_BIG_ENDIAN
947 select SYS_SUPPORTS_LITTLE_ENDIAN
948 select SYS_SUPPORTS_HIGHMEM
950 select NR_CPUS_DEFAULT_32
954 select ZONE_DMA32 if 64BIT
956 select SYS_HAS_EARLY_PRINTK
958 select SYS_SUPPORTS_ZBOOT
959 select SYS_SUPPORTS_ZBOOT_UART16550
961 This board is based on Netlogic XLP Processor.
962 Say Y here if you have a XLP based board.
965 bool "Para-Virtualized guest system"
969 select SYS_SUPPORTS_64BIT_KERNEL
970 select SYS_SUPPORTS_32BIT_KERNEL
971 select SYS_SUPPORTS_BIG_ENDIAN
972 select SYS_SUPPORTS_SMP
973 select NR_CPUS_DEFAULT_4
974 select SYS_HAS_EARLY_PRINTK
975 select SYS_HAS_CPU_MIPS32_R2
976 select SYS_HAS_CPU_MIPS64_R2
977 select SYS_HAS_CPU_CAVIUM_OCTEON
981 This option supports guest running under ????
985 source "arch/mips/alchemy/Kconfig"
986 source "arch/mips/ath25/Kconfig"
987 source "arch/mips/ath79/Kconfig"
988 source "arch/mips/bcm47xx/Kconfig"
989 source "arch/mips/bcm63xx/Kconfig"
990 source "arch/mips/bmips/Kconfig"
991 source "arch/mips/jazz/Kconfig"
992 source "arch/mips/jz4740/Kconfig"
993 source "arch/mips/lantiq/Kconfig"
994 source "arch/mips/lasat/Kconfig"
995 source "arch/mips/pic32/Kconfig"
996 source "arch/mips/pistachio/Kconfig"
997 source "arch/mips/pmcs-msp71xx/Kconfig"
998 source "arch/mips/ralink/Kconfig"
999 source "arch/mips/sgi-ip27/Kconfig"
1000 source "arch/mips/sibyte/Kconfig"
1001 source "arch/mips/txx9/Kconfig"
1002 source "arch/mips/vr41xx/Kconfig"
1003 source "arch/mips/cavium-octeon/Kconfig"
1004 source "arch/mips/loongson32/Kconfig"
1005 source "arch/mips/loongson64/Kconfig"
1006 source "arch/mips/netlogic/Kconfig"
1007 source "arch/mips/paravirt/Kconfig"
1008 source "arch/mips/xilfpga/Kconfig"
1012 config RWSEM_GENERIC_SPINLOCK
1016 config RWSEM_XCHGADD_ALGORITHM
1019 config ARCH_HAS_ILOG2_U32
1023 config ARCH_HAS_ILOG2_U64
1027 config GENERIC_HWEIGHT
1031 config GENERIC_CALIBRATE_DELAY
1035 config SCHED_OMIT_FRAME_POINTER
1040 # Select some configuration options automatically based on user selections.
1045 config ARCH_MAY_HAVE_PC_FDC
1081 config MIPS_CLOCK_VSYSCALL
1082 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1085 select ARCH_REQUIRE_GPIOLIB
1091 config ARCH_DMA_ADDR_T_64BIT
1092 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1094 config ARCH_SUPPORTS_UPROBES
1097 config DMA_MAYBE_COHERENT
1098 select DMA_NONCOHERENT
1104 config DMA_NONCOHERENT
1106 select NEED_DMA_MAP_STATE
1108 config NEED_DMA_MAP_STATE
1111 config SYS_HAS_EARLY_PRINTK
1115 bool "Support for hot-pluggable CPUs"
1116 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1118 Say Y here to allow turning CPUs off and on. CPUs can be
1119 controlled through /sys/devices/system/cpu.
1120 (Note: power management support will enable this option
1121 automatically on SMP systems. )
1122 Say N if you want to disable CPU hotplug.
1124 config SYS_SUPPORTS_HOTPLUG_CPU
1127 config MIPS_BONITO64
1142 config NO_IOPORT_MAP
1148 config GENERIC_ISA_DMA
1150 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1153 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1155 select GENERIC_ISA_DMA
1160 config HOLES_IN_ZONE
1163 config SYS_SUPPORTS_RELOCATABLE
1166 Selected if the platform supports relocating the kernel.
1167 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1168 to allow access to command line and entropy sources.
1171 # Endianness selection. Sufficiently obscure so many users don't know what to
1172 # answer,so we try hard to limit the available choices. Also the use of a
1173 # choice statement should be more obvious to the user.
1176 prompt "Endianness selection"
1178 Some MIPS machines can be configured for either little or big endian
1179 byte order. These modes require different kernels and a different
1180 Linux distribution. In general there is one preferred byteorder for a
1181 particular system but some systems are just as commonly used in the
1182 one or the other endianness.
1184 config CPU_BIG_ENDIAN
1186 depends on SYS_SUPPORTS_BIG_ENDIAN
1188 config CPU_LITTLE_ENDIAN
1189 bool "Little endian"
1190 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1197 config SYS_SUPPORTS_APM_EMULATION
1200 config SYS_SUPPORTS_BIG_ENDIAN
1203 config SYS_SUPPORTS_LITTLE_ENDIAN
1206 config SYS_SUPPORTS_HUGETLBFS
1208 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1211 config MIPS_HUGE_TLB_SUPPORT
1212 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1229 config PCI_GT64XXX_PCI0
1232 config NO_EXCEPT_FILL
1239 select DMA_NONCOHERENT
1241 select SWAP_IO_SPACE
1242 select SYS_HAS_CPU_R5500
1243 select SYS_SUPPORTS_32BIT_KERNEL
1244 select SYS_SUPPORTS_64BIT_KERNEL
1245 select SYS_SUPPORTS_BIG_ENDIAN
1252 select DMA_NONCOHERENT
1253 select SYS_HAS_CPU_MIPS32_R2
1254 select SYS_SUPPORTS_32BIT_KERNEL
1255 select SYS_SUPPORTS_LITTLE_ENDIAN
1256 select SYS_SUPPORTS_BIG_ENDIAN
1257 select SYS_SUPPORTS_MIPS16
1258 select CPU_MIPSR2_IRQ_VI
1267 config SWAP_IO_SPACE
1270 config SGI_HAS_INDYDOG
1282 config SGI_HAS_ZILOG
1285 config SGI_HAS_I8042
1288 config DEFAULT_SGI_PARTITION
1300 config MIPS_L1_CACHE_SHIFT_4
1303 config MIPS_L1_CACHE_SHIFT_5
1306 config MIPS_L1_CACHE_SHIFT_6
1309 config MIPS_L1_CACHE_SHIFT_7
1312 config MIPS_L1_CACHE_SHIFT
1314 default "7" if MIPS_L1_CACHE_SHIFT_7
1315 default "6" if MIPS_L1_CACHE_SHIFT_6
1316 default "5" if MIPS_L1_CACHE_SHIFT_5
1317 default "4" if MIPS_L1_CACHE_SHIFT_4
1320 config HAVE_STD_PC_SERIAL_PORT
1324 bool "ARC console support"
1325 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1329 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1334 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1343 menu "CPU selection"
1349 config CPU_LOONGSON3
1350 bool "Loongson 3 CPU"
1351 depends on SYS_HAS_CPU_LOONGSON3
1352 select CPU_SUPPORTS_64BIT_KERNEL
1353 select CPU_SUPPORTS_HIGHMEM
1354 select CPU_SUPPORTS_HUGEPAGES
1355 select WEAK_ORDERING
1356 select WEAK_REORDERING_BEYOND_LLSC
1357 select ARCH_REQUIRE_GPIOLIB
1359 The Loongson 3 processor implements the MIPS64R2 instruction
1360 set with many extensions.
1362 config CPU_LOONGSON2E
1364 depends on SYS_HAS_CPU_LOONGSON2E
1365 select CPU_LOONGSON2
1367 The Loongson 2E processor implements the MIPS III instruction set
1368 with many extensions.
1370 It has an internal FPGA northbridge, which is compatible to
1373 config CPU_LOONGSON2F
1375 depends on SYS_HAS_CPU_LOONGSON2F
1376 select CPU_LOONGSON2
1377 select ARCH_REQUIRE_GPIOLIB
1379 The Loongson 2F processor implements the MIPS III instruction set
1380 with many extensions.
1382 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1383 have a similar programming interface with FPGA northbridge used in
1386 config CPU_LOONGSON1B
1388 depends on SYS_HAS_CPU_LOONGSON1B
1389 select CPU_LOONGSON1
1391 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1392 release 2 instruction set.
1394 config CPU_MIPS32_R1
1395 bool "MIPS32 Release 1"
1396 depends on SYS_HAS_CPU_MIPS32_R1
1397 select CPU_HAS_PREFETCH
1398 select CPU_SUPPORTS_32BIT_KERNEL
1399 select CPU_SUPPORTS_HIGHMEM
1401 Choose this option to build a kernel for release 1 or later of the
1402 MIPS32 architecture. Most modern embedded systems with a 32-bit
1403 MIPS processor are based on a MIPS32 processor. If you know the
1404 specific type of processor in your system, choose those that one
1405 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1406 Release 2 of the MIPS32 architecture is available since several
1407 years so chances are you even have a MIPS32 Release 2 processor
1408 in which case you should choose CPU_MIPS32_R2 instead for better
1411 config CPU_MIPS32_R2
1412 bool "MIPS32 Release 2"
1413 depends on SYS_HAS_CPU_MIPS32_R2
1414 select CPU_HAS_PREFETCH
1415 select CPU_SUPPORTS_32BIT_KERNEL
1416 select CPU_SUPPORTS_HIGHMEM
1417 select CPU_SUPPORTS_MSA
1420 Choose this option to build a kernel for release 2 or later of the
1421 MIPS32 architecture. Most modern embedded systems with a 32-bit
1422 MIPS processor are based on a MIPS32 processor. If you know the
1423 specific type of processor in your system, choose those that one
1424 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1426 config CPU_MIPS32_R6
1427 bool "MIPS32 Release 6"
1428 depends on SYS_HAS_CPU_MIPS32_R6
1429 select CPU_HAS_PREFETCH
1430 select CPU_SUPPORTS_32BIT_KERNEL
1431 select CPU_SUPPORTS_HIGHMEM
1432 select CPU_SUPPORTS_MSA
1435 select MIPS_O32_FP64_SUPPORT
1437 Choose this option to build a kernel for release 6 or later of the
1438 MIPS32 architecture. New MIPS processors, starting with the Warrior
1439 family, are based on a MIPS32r6 processor. If you own an older
1440 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1442 config CPU_MIPS64_R1
1443 bool "MIPS64 Release 1"
1444 depends on SYS_HAS_CPU_MIPS64_R1
1445 select CPU_HAS_PREFETCH
1446 select CPU_SUPPORTS_32BIT_KERNEL
1447 select CPU_SUPPORTS_64BIT_KERNEL
1448 select CPU_SUPPORTS_HIGHMEM
1449 select CPU_SUPPORTS_HUGEPAGES
1451 Choose this option to build a kernel for release 1 or later of the
1452 MIPS64 architecture. Many modern embedded systems with a 64-bit
1453 MIPS processor are based on a MIPS64 processor. If you know the
1454 specific type of processor in your system, choose those that one
1455 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1456 Release 2 of the MIPS64 architecture is available since several
1457 years so chances are you even have a MIPS64 Release 2 processor
1458 in which case you should choose CPU_MIPS64_R2 instead for better
1461 config CPU_MIPS64_R2
1462 bool "MIPS64 Release 2"
1463 depends on SYS_HAS_CPU_MIPS64_R2
1464 select CPU_HAS_PREFETCH
1465 select CPU_SUPPORTS_32BIT_KERNEL
1466 select CPU_SUPPORTS_64BIT_KERNEL
1467 select CPU_SUPPORTS_HIGHMEM
1468 select CPU_SUPPORTS_HUGEPAGES
1469 select CPU_SUPPORTS_MSA
1471 Choose this option to build a kernel for release 2 or later of the
1472 MIPS64 architecture. Many modern embedded systems with a 64-bit
1473 MIPS processor are based on a MIPS64 processor. If you know the
1474 specific type of processor in your system, choose those that one
1475 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1477 config CPU_MIPS64_R6
1478 bool "MIPS64 Release 6"
1479 depends on SYS_HAS_CPU_MIPS64_R6
1480 select CPU_HAS_PREFETCH
1481 select CPU_SUPPORTS_32BIT_KERNEL
1482 select CPU_SUPPORTS_64BIT_KERNEL
1483 select CPU_SUPPORTS_HIGHMEM
1484 select CPU_SUPPORTS_MSA
1486 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1488 Choose this option to build a kernel for release 6 or later of the
1489 MIPS64 architecture. New MIPS processors, starting with the Warrior
1490 family, are based on a MIPS64r6 processor. If you own an older
1491 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1495 depends on SYS_HAS_CPU_R3000
1497 select CPU_SUPPORTS_32BIT_KERNEL
1498 select CPU_SUPPORTS_HIGHMEM
1500 Please make sure to pick the right CPU type. Linux/MIPS is not
1501 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1502 *not* work on R4000 machines and vice versa. However, since most
1503 of the supported machines have an R4000 (or similar) CPU, R4x00
1504 might be a safe bet. If the resulting kernel does not work,
1505 try to recompile with R3000.
1509 depends on SYS_HAS_CPU_TX39XX
1510 select CPU_SUPPORTS_32BIT_KERNEL
1514 depends on SYS_HAS_CPU_VR41XX
1515 select CPU_SUPPORTS_32BIT_KERNEL
1516 select CPU_SUPPORTS_64BIT_KERNEL
1518 The options selects support for the NEC VR4100 series of processors.
1519 Only choose this option if you have one of these processors as a
1520 kernel built with this option will not run on any other type of
1521 processor or vice versa.
1525 depends on SYS_HAS_CPU_R4300
1526 select CPU_SUPPORTS_32BIT_KERNEL
1527 select CPU_SUPPORTS_64BIT_KERNEL
1529 MIPS Technologies R4300-series processors.
1533 depends on SYS_HAS_CPU_R4X00
1534 select CPU_SUPPORTS_32BIT_KERNEL
1535 select CPU_SUPPORTS_64BIT_KERNEL
1536 select CPU_SUPPORTS_HUGEPAGES
1538 MIPS Technologies R4000-series processors other than 4300, including
1539 the R4000, R4400, R4600, and 4700.
1543 depends on SYS_HAS_CPU_TX49XX
1544 select CPU_HAS_PREFETCH
1545 select CPU_SUPPORTS_32BIT_KERNEL
1546 select CPU_SUPPORTS_64BIT_KERNEL
1547 select CPU_SUPPORTS_HUGEPAGES
1551 depends on SYS_HAS_CPU_R5000
1552 select CPU_SUPPORTS_32BIT_KERNEL
1553 select CPU_SUPPORTS_64BIT_KERNEL
1554 select CPU_SUPPORTS_HUGEPAGES
1556 MIPS Technologies R5000-series processors other than the Nevada.
1560 depends on SYS_HAS_CPU_R5432
1561 select CPU_SUPPORTS_32BIT_KERNEL
1562 select CPU_SUPPORTS_64BIT_KERNEL
1563 select CPU_SUPPORTS_HUGEPAGES
1567 depends on SYS_HAS_CPU_R5500
1568 select CPU_SUPPORTS_32BIT_KERNEL
1569 select CPU_SUPPORTS_64BIT_KERNEL
1570 select CPU_SUPPORTS_HUGEPAGES
1572 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1577 depends on SYS_HAS_CPU_R6000
1578 select CPU_SUPPORTS_32BIT_KERNEL
1580 MIPS Technologies R6000 and R6000A series processors. Note these
1581 processors are extremely rare and the support for them is incomplete.
1585 depends on SYS_HAS_CPU_NEVADA
1586 select CPU_SUPPORTS_32BIT_KERNEL
1587 select CPU_SUPPORTS_64BIT_KERNEL
1588 select CPU_SUPPORTS_HUGEPAGES
1590 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1594 depends on SYS_HAS_CPU_R8000
1595 select CPU_HAS_PREFETCH
1596 select CPU_SUPPORTS_64BIT_KERNEL
1598 MIPS Technologies R8000 processors. Note these processors are
1599 uncommon and the support for them is incomplete.
1603 depends on SYS_HAS_CPU_R10000
1604 select CPU_HAS_PREFETCH
1605 select CPU_SUPPORTS_32BIT_KERNEL
1606 select CPU_SUPPORTS_64BIT_KERNEL
1607 select CPU_SUPPORTS_HIGHMEM
1608 select CPU_SUPPORTS_HUGEPAGES
1610 MIPS Technologies R10000-series processors.
1614 depends on SYS_HAS_CPU_RM7000
1615 select CPU_HAS_PREFETCH
1616 select CPU_SUPPORTS_32BIT_KERNEL
1617 select CPU_SUPPORTS_64BIT_KERNEL
1618 select CPU_SUPPORTS_HIGHMEM
1619 select CPU_SUPPORTS_HUGEPAGES
1623 depends on SYS_HAS_CPU_SB1
1624 select CPU_SUPPORTS_32BIT_KERNEL
1625 select CPU_SUPPORTS_64BIT_KERNEL
1626 select CPU_SUPPORTS_HIGHMEM
1627 select CPU_SUPPORTS_HUGEPAGES
1628 select WEAK_ORDERING
1630 config CPU_CAVIUM_OCTEON
1631 bool "Cavium Octeon processor"
1632 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1633 select CPU_HAS_PREFETCH
1634 select CPU_SUPPORTS_64BIT_KERNEL
1635 select WEAK_ORDERING
1636 select CPU_SUPPORTS_HIGHMEM
1637 select CPU_SUPPORTS_HUGEPAGES
1638 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1639 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1640 select MIPS_L1_CACHE_SHIFT_7
1642 The Cavium Octeon processor is a highly integrated chip containing
1643 many ethernet hardware widgets for networking tasks. The processor
1644 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1645 Full details can be found at http://www.caviumnetworks.com.
1648 bool "Broadcom BMIPS"
1649 depends on SYS_HAS_CPU_BMIPS
1651 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1652 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1653 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1654 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1655 select CPU_SUPPORTS_32BIT_KERNEL
1656 select DMA_NONCOHERENT
1658 select SWAP_IO_SPACE
1659 select WEAK_ORDERING
1660 select CPU_SUPPORTS_HIGHMEM
1661 select CPU_HAS_PREFETCH
1663 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1666 bool "Netlogic XLR SoC"
1667 depends on SYS_HAS_CPU_XLR
1668 select CPU_SUPPORTS_32BIT_KERNEL
1669 select CPU_SUPPORTS_64BIT_KERNEL
1670 select CPU_SUPPORTS_HIGHMEM
1671 select CPU_SUPPORTS_HUGEPAGES
1672 select WEAK_ORDERING
1673 select WEAK_REORDERING_BEYOND_LLSC
1675 Netlogic Microsystems XLR/XLS processors.
1678 bool "Netlogic XLP SoC"
1679 depends on SYS_HAS_CPU_XLP
1680 select CPU_SUPPORTS_32BIT_KERNEL
1681 select CPU_SUPPORTS_64BIT_KERNEL
1682 select CPU_SUPPORTS_HIGHMEM
1683 select WEAK_ORDERING
1684 select WEAK_REORDERING_BEYOND_LLSC
1685 select CPU_HAS_PREFETCH
1687 select CPU_SUPPORTS_HUGEPAGES
1689 Netlogic Microsystems XLP processors.
1692 config CPU_MIPS32_3_5_FEATURES
1693 bool "MIPS32 Release 3.5 Features"
1694 depends on SYS_HAS_CPU_MIPS32_R3_5
1695 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1697 Choose this option to build a kernel for release 2 or later of the
1698 MIPS32 architecture including features from the 3.5 release such as
1699 support for Enhanced Virtual Addressing (EVA).
1701 config CPU_MIPS32_3_5_EVA
1702 bool "Enhanced Virtual Addressing (EVA)"
1703 depends on CPU_MIPS32_3_5_FEATURES
1707 Choose this option if you want to enable the Enhanced Virtual
1708 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1709 One of its primary benefits is an increase in the maximum size
1710 of lowmem (up to 3GB). If unsure, say 'N' here.
1712 config CPU_MIPS32_R5_FEATURES
1713 bool "MIPS32 Release 5 Features"
1714 depends on SYS_HAS_CPU_MIPS32_R5
1715 depends on CPU_MIPS32_R2
1717 Choose this option to build a kernel for release 2 or later of the
1718 MIPS32 architecture including features from release 5 such as
1719 support for Extended Physical Addressing (XPA).
1721 config CPU_MIPS32_R5_XPA
1722 bool "Extended Physical Addressing (XPA)"
1723 depends on CPU_MIPS32_R5_FEATURES
1725 depends on !PAGE_SIZE_4KB
1726 depends on SYS_SUPPORTS_HIGHMEM
1729 select ARCH_PHYS_ADDR_T_64BIT
1732 Choose this option if you want to enable the Extended Physical
1733 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1734 benefit is to increase physical addressing equal to or greater
1735 than 40 bits. Note that this has the side effect of turning on
1736 64-bit addressing which in turn makes the PTEs 64-bit in size.
1737 If unsure, say 'N' here.
1740 config CPU_NOP_WORKAROUNDS
1743 config CPU_JUMP_WORKAROUNDS
1746 config CPU_LOONGSON2F_WORKAROUNDS
1747 bool "Loongson 2F Workarounds"
1749 select CPU_NOP_WORKAROUNDS
1750 select CPU_JUMP_WORKAROUNDS
1752 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1753 require workarounds. Without workarounds the system may hang
1754 unexpectedly. For more information please refer to the gas
1755 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1757 Loongson 2F03 and later have fixed these issues and no workarounds
1758 are needed. The workarounds have no significant side effect on them
1759 but may decrease the performance of the system so this option should
1760 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1763 If unsure, please say Y.
1764 endif # CPU_LOONGSON2F
1766 config SYS_SUPPORTS_ZBOOT
1768 select HAVE_KERNEL_GZIP
1769 select HAVE_KERNEL_BZIP2
1770 select HAVE_KERNEL_LZ4
1771 select HAVE_KERNEL_LZMA
1772 select HAVE_KERNEL_LZO
1773 select HAVE_KERNEL_XZ
1775 config SYS_SUPPORTS_ZBOOT_UART16550
1777 select SYS_SUPPORTS_ZBOOT
1779 config SYS_SUPPORTS_ZBOOT_UART_PROM
1781 select SYS_SUPPORTS_ZBOOT
1783 config CPU_LOONGSON2
1785 select CPU_SUPPORTS_32BIT_KERNEL
1786 select CPU_SUPPORTS_64BIT_KERNEL
1787 select CPU_SUPPORTS_HIGHMEM
1788 select CPU_SUPPORTS_HUGEPAGES
1790 config CPU_LOONGSON1
1794 select CPU_HAS_PREFETCH
1795 select CPU_SUPPORTS_32BIT_KERNEL
1796 select CPU_SUPPORTS_HIGHMEM
1797 select CPU_SUPPORTS_CPUFREQ
1799 config CPU_BMIPS32_3300
1800 select SMP_UP if SMP
1803 config CPU_BMIPS4350
1805 select SYS_SUPPORTS_SMP
1806 select SYS_SUPPORTS_HOTPLUG_CPU
1808 config CPU_BMIPS4380
1810 select MIPS_L1_CACHE_SHIFT_6
1811 select SYS_SUPPORTS_SMP
1812 select SYS_SUPPORTS_HOTPLUG_CPU
1814 config CPU_BMIPS5000
1816 select MIPS_CPU_SCACHE
1817 select MIPS_L1_CACHE_SHIFT_7
1818 select SYS_SUPPORTS_SMP
1819 select SYS_SUPPORTS_HOTPLUG_CPU
1821 config SYS_HAS_CPU_LOONGSON3
1823 select CPU_SUPPORTS_CPUFREQ
1825 config SYS_HAS_CPU_LOONGSON2E
1828 config SYS_HAS_CPU_LOONGSON2F
1830 select CPU_SUPPORTS_CPUFREQ
1831 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1832 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1834 config SYS_HAS_CPU_LOONGSON1B
1837 config SYS_HAS_CPU_MIPS32_R1
1840 config SYS_HAS_CPU_MIPS32_R2
1843 config SYS_HAS_CPU_MIPS32_R3_5
1846 config SYS_HAS_CPU_MIPS32_R5
1849 config SYS_HAS_CPU_MIPS32_R6
1852 config SYS_HAS_CPU_MIPS64_R1
1855 config SYS_HAS_CPU_MIPS64_R2
1858 config SYS_HAS_CPU_MIPS64_R6
1861 config SYS_HAS_CPU_R3000
1864 config SYS_HAS_CPU_TX39XX
1867 config SYS_HAS_CPU_VR41XX
1870 config SYS_HAS_CPU_R4300
1873 config SYS_HAS_CPU_R4X00
1876 config SYS_HAS_CPU_TX49XX
1879 config SYS_HAS_CPU_R5000
1882 config SYS_HAS_CPU_R5432
1885 config SYS_HAS_CPU_R5500
1888 config SYS_HAS_CPU_R6000
1891 config SYS_HAS_CPU_NEVADA
1894 config SYS_HAS_CPU_R8000
1897 config SYS_HAS_CPU_R10000
1900 config SYS_HAS_CPU_RM7000
1903 config SYS_HAS_CPU_SB1
1906 config SYS_HAS_CPU_CAVIUM_OCTEON
1909 config SYS_HAS_CPU_BMIPS
1912 config SYS_HAS_CPU_BMIPS32_3300
1914 select SYS_HAS_CPU_BMIPS
1916 config SYS_HAS_CPU_BMIPS4350
1918 select SYS_HAS_CPU_BMIPS
1920 config SYS_HAS_CPU_BMIPS4380
1922 select SYS_HAS_CPU_BMIPS
1924 config SYS_HAS_CPU_BMIPS5000
1926 select SYS_HAS_CPU_BMIPS
1928 config SYS_HAS_CPU_XLR
1931 config SYS_HAS_CPU_XLP
1934 config MIPS_MALTA_PM
1935 depends on MIPS_MALTA
1941 # CPU may reorder R->R, R->W, W->R, W->W
1942 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1944 config WEAK_ORDERING
1948 # CPU may reorder reads and writes beyond LL/SC
1949 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1951 config WEAK_REORDERING_BEYOND_LLSC
1956 # These two indicate any level of the MIPS32 and MIPS64 architecture
1960 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1964 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1967 # These two indicate the revision of the architecture, either Release 1 or Release 2
1971 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1975 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1980 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1989 config SYS_SUPPORTS_32BIT_KERNEL
1991 config SYS_SUPPORTS_64BIT_KERNEL
1993 config CPU_SUPPORTS_32BIT_KERNEL
1995 config CPU_SUPPORTS_64BIT_KERNEL
1997 config CPU_SUPPORTS_CPUFREQ
1999 config CPU_SUPPORTS_ADDRWINCFG
2001 config CPU_SUPPORTS_HUGEPAGES
2003 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2005 config MIPS_PGD_C0_CONTEXT
2007 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2010 # Set to y for ptrace access to watch registers.
2012 config HARDWARE_WATCHPOINTS
2014 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2019 prompt "Kernel code model"
2021 You should only select this option if you have a workload that
2022 actually benefits from 64-bit processing or if your machine has
2023 large memory. You will only be presented a single option in this
2024 menu if your system does not support both 32-bit and 64-bit kernels.
2027 bool "32-bit kernel"
2028 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2031 Select this option if you want to build a 32-bit kernel.
2034 bool "64-bit kernel"
2035 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2037 Select this option if you want to build a 64-bit kernel.
2042 bool "KVM Guest Kernel"
2043 depends on BROKEN_ON_SMP
2045 Select this option if building a guest kernel for KVM (Trap & Emulate)
2048 config KVM_GUEST_TIMER_FREQ
2049 int "Count/Compare Timer Frequency (MHz)"
2050 depends on KVM_GUEST
2053 Set this to non-zero if building a guest kernel for KVM to skip RTC
2054 emulation when determining guest CPU Frequency. Instead, the guest's
2055 timer frequency is specified directly.
2058 prompt "Kernel page size"
2059 default PAGE_SIZE_4KB
2061 config PAGE_SIZE_4KB
2063 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2065 This option select the standard 4kB Linux page size. On some
2066 R3000-family processors this is the only available page size. Using
2067 4kB page size will minimize memory consumption and is therefore
2068 recommended for low memory systems.
2070 config PAGE_SIZE_8KB
2072 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2074 Using 8kB page size will result in higher performance kernel at
2075 the price of higher memory consumption. This option is available
2076 only on R8000 and cnMIPS processors. Note that you will need a
2077 suitable Linux distribution to support this.
2079 config PAGE_SIZE_16KB
2081 depends on !CPU_R3000 && !CPU_TX39XX
2083 Using 16kB page size will result in higher performance kernel at
2084 the price of higher memory consumption. This option is available on
2085 all non-R3000 family processors. Note that you will need a suitable
2086 Linux distribution to support this.
2088 config PAGE_SIZE_32KB
2090 depends on CPU_CAVIUM_OCTEON
2092 Using 32kB page size will result in higher performance kernel at
2093 the price of higher memory consumption. This option is available
2094 only on cnMIPS cores. Note that you will need a suitable Linux
2095 distribution to support this.
2097 config PAGE_SIZE_64KB
2099 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2101 Using 64kB page size will result in higher performance kernel at
2102 the price of higher memory consumption. This option is available on
2103 all non-R3000 family processor. Not that at the time of this
2104 writing this option is still high experimental.
2108 config FORCE_MAX_ZONEORDER
2109 int "Maximum zone order"
2110 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2111 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2112 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2113 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2114 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2115 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2119 The kernel memory allocator divides physically contiguous memory
2120 blocks into "zones", where each zone is a power of two number of
2121 pages. This option selects the largest power of two that the kernel
2122 keeps in the memory allocator. If you need to allocate very large
2123 blocks of physically contiguous memory, then you may need to
2124 increase this value.
2126 This config option is actually maximum order plus one. For example,
2127 a value of 11 means that the largest free memory block is 2^10 pages.
2129 The page size is not necessarily 4KB. Keep this in mind
2130 when choosing a value for this option.
2135 config IP22_CPU_SCACHE
2140 # Support for a MIPS32 / MIPS64 style S-caches
2142 config MIPS_CPU_SCACHE
2146 config R5000_CPU_SCACHE
2150 config RM7000_CPU_SCACHE
2154 config SIBYTE_DMA_PAGEOPS
2155 bool "Use DMA to clear/copy pages"
2158 Instead of using the CPU to zero and copy pages, use a Data Mover
2159 channel. These DMA channels are otherwise unused by the standard
2160 SiByte Linux port. Seems to give a small performance benefit.
2162 config CPU_HAS_PREFETCH
2165 config CPU_GENERIC_DUMP_TLB
2167 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2171 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2173 config CPU_R4K_CACHE_TLB
2175 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2178 bool "MIPS MT SMP support (1 TC on each available VPE)"
2179 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2180 select CPU_MIPSR2_IRQ_VI
2181 select CPU_MIPSR2_IRQ_EI
2186 select SYS_SUPPORTS_SMP
2187 select SYS_SUPPORTS_SCHED_SMT
2188 select MIPS_PERF_SHARED_TC_COUNTERS
2190 This is a kernel model which is known as SMVP. This is supported
2191 on cores with the MT ASE and uses the available VPEs to implement
2192 virtual processors which supports SMP. This is equivalent to the
2193 Intel Hyperthreading feature. For further information go to
2194 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2200 bool "SMT (multithreading) scheduler support"
2201 depends on SYS_SUPPORTS_SCHED_SMT
2204 SMT scheduler support improves the CPU scheduler's decision making
2205 when dealing with MIPS MT enabled cores at a cost of slightly
2206 increased overhead in some places. If unsure say N here.
2208 config SYS_SUPPORTS_SCHED_SMT
2211 config SYS_SUPPORTS_MULTITHREADING
2214 config MIPS_MT_FPAFF
2215 bool "Dynamic FPU affinity for FP-intensive threads"
2217 depends on MIPS_MT_SMP
2219 config MIPSR2_TO_R6_EMULATOR
2220 bool "MIPS R2-to-R6 emulator"
2221 depends on CPU_MIPSR6 && !SMP
2224 Choose this option if you want to run non-R6 MIPS userland code.
2225 Even if you say 'Y' here, the emulator will still be disabled by
2226 default. You can enable it using the 'mipsr2emu' kernel option.
2227 The only reason this is a build-time option is to save ~14K from the
2229 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2230 depends on SMP && CPU_MIPSR6
2232 config MIPS_VPE_LOADER
2233 bool "VPE loader support."
2234 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2235 select CPU_MIPSR2_IRQ_VI
2236 select CPU_MIPSR2_IRQ_EI
2239 Includes a loader for loading an elf relocatable object
2240 onto another VPE and running it.
2242 config MIPS_VPE_LOADER_CMP
2245 depends on MIPS_VPE_LOADER && MIPS_CMP
2247 config MIPS_VPE_LOADER_MT
2250 depends on MIPS_VPE_LOADER && !MIPS_CMP
2252 config MIPS_VPE_LOADER_TOM
2253 bool "Load VPE program into memory hidden from linux"
2254 depends on MIPS_VPE_LOADER
2257 The loader can use memory that is present but has been hidden from
2258 Linux using the kernel command line option "mem=xxMB". It's up to
2259 you to ensure the amount you put in the option and the space your
2260 program requires is less or equal to the amount physically present.
2262 config MIPS_VPE_APSP_API
2263 bool "Enable support for AP/SP API (RTLX)"
2264 depends on MIPS_VPE_LOADER
2267 config MIPS_VPE_APSP_API_CMP
2270 depends on MIPS_VPE_APSP_API && MIPS_CMP
2272 config MIPS_VPE_APSP_API_MT
2275 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2278 bool "MIPS CMP framework support (DEPRECATED)"
2279 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2282 select SYS_SUPPORTS_SMP
2283 select WEAK_ORDERING
2286 Select this if you are using a bootloader which implements the "CMP
2287 framework" protocol (ie. YAMON) and want your kernel to make use of
2288 its ability to start secondary CPUs.
2290 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2294 bool "MIPS Coherent Processing System support"
2295 depends on SYS_SUPPORTS_MIPS_CPS
2298 select MIPS_CPS_PM if HOTPLUG_CPU
2300 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2301 select SYS_SUPPORTS_HOTPLUG_CPU
2302 select SYS_SUPPORTS_SMP
2303 select WEAK_ORDERING
2305 Select this if you wish to run an SMP kernel across multiple cores
2306 within a MIPS Coherent Processing System. When this option is
2307 enabled the kernel will probe for other cores and boot them with
2308 no external assistance. It is safe to enable this when hardware
2309 support is unavailable.
2322 config SB1_PASS_2_WORKAROUNDS
2324 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2327 config SB1_PASS_2_1_WORKAROUNDS
2329 depends on CPU_SB1 && CPU_SB1_PASS_2
2333 config ARCH_PHYS_ADDR_T_64BIT
2337 prompt "SmartMIPS or microMIPS ASE support"
2339 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2342 Select this if you want neither microMIPS nor SmartMIPS support
2344 config CPU_HAS_SMARTMIPS
2345 depends on SYS_SUPPORTS_SMARTMIPS
2348 SmartMIPS is a extension of the MIPS32 architecture aimed at
2349 increased security at both hardware and software level for
2350 smartcards. Enabling this option will allow proper use of the
2351 SmartMIPS instructions by Linux applications. However a kernel with
2352 this option will not work on a MIPS core without SmartMIPS core. If
2353 you don't know you probably don't have SmartMIPS and should say N
2356 config CPU_MICROMIPS
2357 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2360 When this option is enabled the kernel will be built using the
2366 bool "Support for the MIPS SIMD Architecture"
2367 depends on CPU_SUPPORTS_MSA
2368 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2370 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2371 and a set of SIMD instructions to operate on them. When this option
2372 is enabled the kernel will support allocating & switching MSA
2373 vector register contexts. If you know that your kernel will only be
2374 running on CPUs which do not support MSA or that your userland will
2375 not be making use of it then you may wish to say N here to reduce
2376 the size & complexity of your kernel.
2387 # Vectored interrupt mode is an R2 feature
2389 config CPU_MIPSR2_IRQ_VI
2393 # Extended interrupt mode is an R2 feature
2395 config CPU_MIPSR2_IRQ_EI
2400 depends on !CPU_R3000
2406 config CPU_DADDI_WORKAROUNDS
2409 config CPU_R4000_WORKAROUNDS
2411 select CPU_R4400_WORKAROUNDS
2413 config CPU_R4400_WORKAROUNDS
2417 # - Highmem only makes sense for the 32-bit kernel.
2418 # - The current highmem code will only work properly on physically indexed
2419 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2420 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2421 # moment we protect the user and offer the highmem option only on machines
2422 # where it's known to be safe. This will not offer highmem on a few systems
2423 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2424 # indexed CPUs but we're playing safe.
2425 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2426 # know they might have memory configurations that could make use of highmem
2430 bool "High Memory Support"
2431 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2433 config CPU_SUPPORTS_HIGHMEM
2436 config SYS_SUPPORTS_HIGHMEM
2439 config SYS_SUPPORTS_SMARTMIPS
2442 config SYS_SUPPORTS_MICROMIPS
2445 config SYS_SUPPORTS_MIPS16
2448 This option must be set if a kernel might be executed on a MIPS16-
2449 enabled CPU even if MIPS16 is not actually being used. In other
2450 words, it makes the kernel MIPS16-tolerant.
2452 config CPU_SUPPORTS_MSA
2455 config ARCH_FLATMEM_ENABLE
2457 depends on !NUMA && !CPU_LOONGSON2
2459 config ARCH_DISCONTIGMEM_ENABLE
2461 default y if SGI_IP27
2463 Say Y to support efficient handling of discontiguous physical memory,
2464 for architectures which are either NUMA (Non-Uniform Memory Access)
2465 or have huge holes in the physical address space for other reasons.
2466 See <file:Documentation/vm/numa> for more.
2468 config ARCH_SPARSEMEM_ENABLE
2470 select SPARSEMEM_STATIC
2474 depends on SYS_SUPPORTS_NUMA
2476 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2477 Access). This option improves performance on systems with more
2478 than two nodes; on two node systems it is generally better to
2479 leave it disabled; on single node systems disable this option
2482 config SYS_SUPPORTS_NUMA
2486 bool "Relocatable kernel"
2487 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2489 This builds a kernel image that retains relocation information
2490 so it can be loaded someplace besides the default 1MB.
2491 The relocations make the kernel binary about 15% larger,
2492 but are discarded at runtime
2494 config RELOCATION_TABLE_SIZE
2495 hex "Relocation table size"
2496 depends on RELOCATABLE
2497 range 0x0 0x01000000
2498 default "0x00100000"
2500 A table of relocation data will be appended to the kernel binary
2501 and parsed at boot to fix up the relocated kernel.
2503 This option allows the amount of space reserved for the table to be
2504 adjusted, although the default of 1Mb should be ok in most cases.
2506 The build will fail and a valid size suggested if this is too small.
2508 If unsure, leave at the default value.
2510 config RANDOMIZE_BASE
2511 bool "Randomize the address of the kernel image"
2512 depends on RELOCATABLE
2514 Randomizes the physical and virtual address at which the
2515 kernel image is loaded, as a security feature that
2516 deters exploit attempts relying on knowledge of the location
2517 of kernel internals.
2519 Entropy is generated using any coprocessor 0 registers available.
2521 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2525 config RANDOMIZE_BASE_MAX_OFFSET
2526 hex "Maximum kASLR offset" if EXPERT
2527 depends on RANDOMIZE_BASE
2528 range 0x0 0x40000000 if EVA || 64BIT
2529 range 0x0 0x08000000
2530 default "0x01000000"
2532 When kASLR is active, this provides the maximum offset that will
2533 be applied to the kernel image. It should be set according to the
2534 amount of physical RAM available in the target system minus
2535 PHYSICAL_START and must be a power of 2.
2537 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2538 EVA or 64-bit. The default is 16Mb.
2543 depends on NEED_MULTIPLE_NODES
2545 config HW_PERF_EVENTS
2546 bool "Enable hardware performance counter support for perf events"
2547 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2550 Enable hardware performance counter support for perf events. If
2551 disabled, perf events will use software events only.
2556 bool "Multi-Processing support"
2557 depends on SYS_SUPPORTS_SMP
2559 This enables support for systems with more than one CPU. If you have
2560 a system with only one CPU, say N. If you have a system with more
2561 than one CPU, say Y.
2563 If you say N here, the kernel will run on uni- and multiprocessor
2564 machines, but will use only one CPU of a multiprocessor machine. If
2565 you say Y here, the kernel will run on many, but not all,
2566 uniprocessor machines. On a uniprocessor machine, the kernel
2567 will run faster if you say N here.
2569 People using multiprocessor machines who say Y here should also say
2570 Y to "Enhanced Real Time Clock Support", below.
2572 See also the SMP-HOWTO available at
2573 <http://www.tldp.org/docs.html#howto>.
2575 If you don't know what to do here, say N.
2580 config SYS_SUPPORTS_MIPS_CMP
2583 config SYS_SUPPORTS_MIPS_CPS
2586 config SYS_SUPPORTS_SMP
2589 config NR_CPUS_DEFAULT_4
2592 config NR_CPUS_DEFAULT_8
2595 config NR_CPUS_DEFAULT_16
2598 config NR_CPUS_DEFAULT_32
2601 config NR_CPUS_DEFAULT_64
2605 int "Maximum number of CPUs (2-256)"
2608 default "4" if NR_CPUS_DEFAULT_4
2609 default "8" if NR_CPUS_DEFAULT_8
2610 default "16" if NR_CPUS_DEFAULT_16
2611 default "32" if NR_CPUS_DEFAULT_32
2612 default "64" if NR_CPUS_DEFAULT_64
2614 This allows you to specify the maximum number of CPUs which this
2615 kernel will support. The maximum supported value is 32 for 32-bit
2616 kernel and 64 for 64-bit kernels; the minimum value which makes
2617 sense is 1 for Qemu (useful only for kernel debugging purposes)
2618 and 2 for all others.
2620 This is purely to save memory - each supported CPU adds
2621 approximately eight kilobytes to the kernel image. For best
2622 performance should round up your number of processors to the next
2625 config MIPS_PERF_SHARED_TC_COUNTERS
2629 # Timer Interrupt Frequency Configuration
2633 prompt "Timer frequency"
2636 Allows the configuration of the timer frequency.
2639 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2642 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2645 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2648 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2651 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2654 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2657 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2660 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2664 config SYS_SUPPORTS_24HZ
2667 config SYS_SUPPORTS_48HZ
2670 config SYS_SUPPORTS_100HZ
2673 config SYS_SUPPORTS_128HZ
2676 config SYS_SUPPORTS_250HZ
2679 config SYS_SUPPORTS_256HZ
2682 config SYS_SUPPORTS_1000HZ
2685 config SYS_SUPPORTS_1024HZ
2688 config SYS_SUPPORTS_ARBIT_HZ
2690 default y if !SYS_SUPPORTS_24HZ && \
2691 !SYS_SUPPORTS_48HZ && \
2692 !SYS_SUPPORTS_100HZ && \
2693 !SYS_SUPPORTS_128HZ && \
2694 !SYS_SUPPORTS_250HZ && \
2695 !SYS_SUPPORTS_256HZ && \
2696 !SYS_SUPPORTS_1000HZ && \
2697 !SYS_SUPPORTS_1024HZ
2703 default 100 if HZ_100
2704 default 128 if HZ_128
2705 default 250 if HZ_250
2706 default 256 if HZ_256
2707 default 1000 if HZ_1000
2708 default 1024 if HZ_1024
2711 def_bool HIGH_RES_TIMERS
2713 source "kernel/Kconfig.preempt"
2716 bool "Kexec system call"
2719 kexec is a system call that implements the ability to shutdown your
2720 current kernel, and to start another kernel. It is like a reboot
2721 but it is independent of the system firmware. And like a reboot
2722 you can start any kernel with it, not just Linux.
2724 The name comes from the similarity to the exec system call.
2726 It is an ongoing process to be certain the hardware in a machine
2727 is properly shutdown, so do not be surprised if this code does not
2728 initially work for you. As of this writing the exact hardware
2729 interface is strongly in flux, so no good recommendation can be
2733 bool "Kernel crash dumps"
2735 Generate crash dump after being started by kexec.
2736 This should be normally only set in special crash dump kernels
2737 which are loaded in the main kernel with kexec-tools into
2738 a specially reserved region and then later executed after
2739 a crash by kdump/kexec. The crash dump kernel must be compiled
2740 to a memory address not used by the main kernel or firmware using
2743 config PHYSICAL_START
2744 hex "Physical address where the kernel is loaded"
2745 default "0xffffffff84000000" if 64BIT
2746 default "0x84000000" if 32BIT
2747 depends on CRASH_DUMP
2749 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2750 If you plan to use kernel for capturing the crash dump change
2751 this value to start of the reserved region (the "X" value as
2752 specified in the "crashkernel=YM@XM" command line boot parameter
2753 passed to the panic-ed kernel).
2756 bool "Enable seccomp to safely compute untrusted bytecode"
2760 This kernel feature is useful for number crunching applications
2761 that may need to compute untrusted bytecode during their
2762 execution. By using pipes or other transports made available to
2763 the process as file descriptors supporting the read/write
2764 syscalls, it's possible to isolate those applications in
2765 their own address space using seccomp. Once seccomp is
2766 enabled via /proc/<pid>/seccomp, it cannot be disabled
2767 and the task is only allowed to execute a few safe syscalls
2768 defined by each seccomp mode.
2770 If unsure, say Y. Only embedded should say N here.
2772 config MIPS_O32_FP64_SUPPORT
2773 bool "Support for O32 binaries using 64-bit FP"
2774 depends on 32BIT || MIPS32_O32
2776 When this is enabled, the kernel will support use of 64-bit floating
2777 point registers with binaries using the O32 ABI along with the
2778 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2779 32-bit MIPS systems this support is at the cost of increasing the
2780 size and complexity of the compiled FPU emulator. Thus if you are
2781 running a MIPS32 system and know that none of your userland binaries
2782 will require 64-bit floating point, you may wish to reduce the size
2783 of your kernel & potentially improve FP emulation performance by
2786 Although binutils currently supports use of this flag the details
2787 concerning its effect upon the O32 ABI in userland are still being
2788 worked on. In order to avoid userland becoming dependant upon current
2789 behaviour before the details have been finalised, this option should
2790 be considered experimental and only enabled by those working upon
2798 select OF_EARLY_FLATTREE
2805 prompt "Kernel appended dtb support" if USE_OF
2806 default MIPS_NO_APPENDED_DTB
2808 config MIPS_NO_APPENDED_DTB
2811 Do not enable appended dtb support.
2813 config MIPS_ELF_APPENDED_DTB
2816 With this option, the boot code will look for a device tree binary
2817 DTB) included in the vmlinux ELF section .appended_dtb. By default
2818 it is empty and the DTB can be appended using binutils command
2821 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2823 This is meant as a backward compatiblity convenience for those
2824 systems with a bootloader that can't be upgraded to accommodate
2825 the documented boot protocol using a device tree.
2827 config MIPS_RAW_APPENDED_DTB
2830 With this option, the boot code will look for a device tree binary
2831 DTB) appended to raw vmlinux.bin (without decompressor).
2832 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2834 This is meant as a backward compatibility convenience for those
2835 systems with a bootloader that can't be upgraded to accommodate
2836 the documented boot protocol using a device tree.
2838 Beware that there is very little in terms of protection against
2839 this option being confused by leftover garbage in memory that might
2840 look like a DTB header after a reboot if no actual DTB is appended
2841 to vmlinux.bin. Do not leave this option active in a production kernel
2842 if you don't intend to always append a DTB.
2844 config MIPS_ZBOOT_APPENDED_DTB
2846 depends on SYS_SUPPORTS_ZBOOT
2848 With this option, the boot code will look for a device tree binary
2849 DTB) appended to raw vmlinuz.bin (with decompressor).
2850 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2852 This is meant as a backward compatibility convenience for those
2853 systems with a bootloader that can't be upgraded to accommodate
2854 the documented boot protocol using a device tree.
2856 Beware that there is very little in terms of protection against
2857 this option being confused by leftover garbage in memory that might
2858 look like a DTB header after a reboot if no actual DTB is appended
2859 to vmlinuz.bin. Do not leave this option active in a production kernel
2860 if you don't intend to always append a DTB.
2864 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2865 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2866 !MIPS_MALTA && !MIPS_SEAD3 && \
2868 default MIPS_CMDLINE_FROM_BOOTLOADER
2870 config MIPS_CMDLINE_FROM_DTB
2872 bool "Dtb kernel arguments if available"
2874 config MIPS_CMDLINE_DTB_EXTEND
2876 bool "Extend dtb kernel arguments with bootloader arguments"
2878 config MIPS_CMDLINE_FROM_BOOTLOADER
2879 bool "Bootloader kernel arguments if available"
2884 config LOCKDEP_SUPPORT
2888 config STACKTRACE_SUPPORT
2892 config HAVE_LATENCYTOP_SUPPORT
2896 config PGTABLE_LEVELS
2898 default 3 if 64BIT && !PAGE_SIZE_64KB
2901 source "init/Kconfig"
2903 source "kernel/Kconfig.freezer"
2905 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2913 bool "Support for PCI controller"
2914 depends on HW_HAS_PCI
2916 select NO_GENERIC_PCI_IOPORT_MAP
2918 Find out whether you have a PCI motherboard. PCI is the name of a
2919 bus system, i.e. the way the CPU talks to the other stuff inside
2920 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2924 bool "Support for HT-linked PCI"
2926 depends on CPU_LOONGSON3
2930 Loongson family machines use Hyper-Transport bus for inter-core
2931 connection and device connection. The PCI bus is a subordinate
2932 linked at HT. Choose Y for Loongson-3 based machines.
2937 source "drivers/pci/Kconfig"
2940 # ISA support is now enabled via select. Too many systems still have the one
2941 # or other ISA chip on the board that users don't know about so don't expect
2942 # users to choose the right thing ...
2949 depends on HW_HAS_EISA
2951 select GENERIC_ISA_DMA
2953 The Extended Industry Standard Architecture (EISA) bus was
2954 developed as an open alternative to the IBM MicroChannel bus.
2956 The EISA bus provided some of the features of the IBM MicroChannel
2957 bus while maintaining backward compatibility with cards made for
2958 the older ISA bus. The EISA bus saw limited use between 1988 and
2959 1995 when it was made obsolete by the PCI bus.
2961 Say Y here if you are building a kernel for an EISA-based machine.
2965 source "drivers/eisa/Kconfig"
2968 bool "TURBOchannel support"
2969 depends on MACH_DECSTATION
2971 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2972 processors. TURBOchannel programming specifications are available
2974 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2976 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2977 Linux driver support status is documented at:
2978 <http://www.linux-mips.org/wiki/DECstation>
2988 select MIPS_EXTERNAL_TIMER
2996 source "drivers/pcmcia/Kconfig"
2999 tristate "RapidIO support"
3003 If you say Y here, the kernel will include drivers and
3004 infrastructure code to support RapidIO interconnect devices.
3006 source "drivers/rapidio/Kconfig"
3010 menu "Executable file formats"
3012 source "fs/Kconfig.binfmt"
3017 config MIPS32_COMPAT
3023 config SYSVIPC_COMPAT
3027 bool "Kernel support for o32 binaries"
3029 select ARCH_WANT_OLD_COMPAT_IPC
3031 select MIPS32_COMPAT
3032 select SYSVIPC_COMPAT if SYSVIPC
3034 Select this option if you want to run o32 binaries. These are pure
3035 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3036 existing binaries are in this format.
3041 bool "Kernel support for n32 binaries"
3044 select MIPS32_COMPAT
3045 select SYSVIPC_COMPAT if SYSVIPC
3047 Select this option if you want to run n32 binaries. These are
3048 64-bit binaries using 32-bit quantities for addressing and certain
3049 data that would normally be 64-bit. They are used in special
3056 default y if MIPS32_O32 || MIPS32_N32
3060 menu "Power management options"
3062 config ARCH_HIBERNATION_POSSIBLE
3064 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3066 config ARCH_SUSPEND_POSSIBLE
3068 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3070 source "kernel/power/Kconfig"
3074 config MIPS_EXTERNAL_TIMER
3077 menu "CPU Power Management"
3079 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3080 source "drivers/cpufreq/Kconfig"
3083 source "drivers/cpuidle/Kconfig"
3087 source "net/Kconfig"
3089 source "drivers/Kconfig"
3091 source "drivers/firmware/Kconfig"
3095 source "arch/mips/Kconfig.debug"
3097 source "security/Kconfig"
3099 source "crypto/Kconfig"
3101 source "lib/Kconfig"
3103 source "arch/mips/kvm/Kconfig"