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 MIPS_PGD_C0_CONTEXT
1358 select ARCH_REQUIRE_GPIOLIB
1360 The Loongson 3 processor implements the MIPS64R2 instruction
1361 set with many extensions.
1363 config LOONGSON3_ENHANCEMENT
1364 bool "New Loongson 3 CPU Enhancements"
1367 select CPU_HAS_PREFETCH
1368 depends on CPU_LOONGSON3
1370 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1371 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1372 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1373 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1374 Fast TLB refill support, etc.
1376 This option enable those enhancements which are not probed at run
1377 time. If you want a generic kernel to run on all Loongson 3 machines,
1378 please say 'N' here. If you want a high-performance kernel to run on
1379 new Loongson 3 machines only, please say 'Y' here.
1381 config CPU_LOONGSON2E
1383 depends on SYS_HAS_CPU_LOONGSON2E
1384 select CPU_LOONGSON2
1386 The Loongson 2E processor implements the MIPS III instruction set
1387 with many extensions.
1389 It has an internal FPGA northbridge, which is compatible to
1392 config CPU_LOONGSON2F
1394 depends on SYS_HAS_CPU_LOONGSON2F
1395 select CPU_LOONGSON2
1396 select ARCH_REQUIRE_GPIOLIB
1398 The Loongson 2F processor implements the MIPS III instruction set
1399 with many extensions.
1401 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1402 have a similar programming interface with FPGA northbridge used in
1405 config CPU_LOONGSON1B
1407 depends on SYS_HAS_CPU_LOONGSON1B
1408 select CPU_LOONGSON1
1409 select ARCH_WANT_OPTIONAL_GPIOLIB
1410 select LEDS_GPIO_REGISTER
1412 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1413 release 2 instruction set.
1415 config CPU_MIPS32_R1
1416 bool "MIPS32 Release 1"
1417 depends on SYS_HAS_CPU_MIPS32_R1
1418 select CPU_HAS_PREFETCH
1419 select CPU_SUPPORTS_32BIT_KERNEL
1420 select CPU_SUPPORTS_HIGHMEM
1422 Choose this option to build a kernel for release 1 or later of the
1423 MIPS32 architecture. Most modern embedded systems with a 32-bit
1424 MIPS processor are based on a MIPS32 processor. If you know the
1425 specific type of processor in your system, choose those that one
1426 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1427 Release 2 of the MIPS32 architecture is available since several
1428 years so chances are you even have a MIPS32 Release 2 processor
1429 in which case you should choose CPU_MIPS32_R2 instead for better
1432 config CPU_MIPS32_R2
1433 bool "MIPS32 Release 2"
1434 depends on SYS_HAS_CPU_MIPS32_R2
1435 select CPU_HAS_PREFETCH
1436 select CPU_SUPPORTS_32BIT_KERNEL
1437 select CPU_SUPPORTS_HIGHMEM
1438 select CPU_SUPPORTS_MSA
1441 Choose this option to build a kernel for release 2 or later of the
1442 MIPS32 architecture. Most modern embedded systems with a 32-bit
1443 MIPS processor are based on a MIPS32 processor. If you know the
1444 specific type of processor in your system, choose those that one
1445 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1447 config CPU_MIPS32_R6
1448 bool "MIPS32 Release 6"
1449 depends on SYS_HAS_CPU_MIPS32_R6
1450 select CPU_HAS_PREFETCH
1451 select CPU_SUPPORTS_32BIT_KERNEL
1452 select CPU_SUPPORTS_HIGHMEM
1453 select CPU_SUPPORTS_MSA
1456 select MIPS_O32_FP64_SUPPORT
1458 Choose this option to build a kernel for release 6 or later of the
1459 MIPS32 architecture. New MIPS processors, starting with the Warrior
1460 family, are based on a MIPS32r6 processor. If you own an older
1461 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1463 config CPU_MIPS64_R1
1464 bool "MIPS64 Release 1"
1465 depends on SYS_HAS_CPU_MIPS64_R1
1466 select CPU_HAS_PREFETCH
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_64BIT_KERNEL
1469 select CPU_SUPPORTS_HIGHMEM
1470 select CPU_SUPPORTS_HUGEPAGES
1472 Choose this option to build a kernel for release 1 or later of the
1473 MIPS64 architecture. Many modern embedded systems with a 64-bit
1474 MIPS processor are based on a MIPS64 processor. If you know the
1475 specific type of processor in your system, choose those that one
1476 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1477 Release 2 of the MIPS64 architecture is available since several
1478 years so chances are you even have a MIPS64 Release 2 processor
1479 in which case you should choose CPU_MIPS64_R2 instead for better
1482 config CPU_MIPS64_R2
1483 bool "MIPS64 Release 2"
1484 depends on SYS_HAS_CPU_MIPS64_R2
1485 select CPU_HAS_PREFETCH
1486 select CPU_SUPPORTS_32BIT_KERNEL
1487 select CPU_SUPPORTS_64BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1489 select CPU_SUPPORTS_HUGEPAGES
1490 select CPU_SUPPORTS_MSA
1492 Choose this option to build a kernel for release 2 or later of the
1493 MIPS64 architecture. Many modern embedded systems with a 64-bit
1494 MIPS processor are based on a MIPS64 processor. If you know the
1495 specific type of processor in your system, choose those that one
1496 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1498 config CPU_MIPS64_R6
1499 bool "MIPS64 Release 6"
1500 depends on SYS_HAS_CPU_MIPS64_R6
1501 select CPU_HAS_PREFETCH
1502 select CPU_SUPPORTS_32BIT_KERNEL
1503 select CPU_SUPPORTS_64BIT_KERNEL
1504 select CPU_SUPPORTS_HIGHMEM
1505 select CPU_SUPPORTS_MSA
1507 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1509 Choose this option to build a kernel for release 6 or later of the
1510 MIPS64 architecture. New MIPS processors, starting with the Warrior
1511 family, are based on a MIPS64r6 processor. If you own an older
1512 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1516 depends on SYS_HAS_CPU_R3000
1518 select CPU_SUPPORTS_32BIT_KERNEL
1519 select CPU_SUPPORTS_HIGHMEM
1521 Please make sure to pick the right CPU type. Linux/MIPS is not
1522 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1523 *not* work on R4000 machines and vice versa. However, since most
1524 of the supported machines have an R4000 (or similar) CPU, R4x00
1525 might be a safe bet. If the resulting kernel does not work,
1526 try to recompile with R3000.
1530 depends on SYS_HAS_CPU_TX39XX
1531 select CPU_SUPPORTS_32BIT_KERNEL
1535 depends on SYS_HAS_CPU_VR41XX
1536 select CPU_SUPPORTS_32BIT_KERNEL
1537 select CPU_SUPPORTS_64BIT_KERNEL
1539 The options selects support for the NEC VR4100 series of processors.
1540 Only choose this option if you have one of these processors as a
1541 kernel built with this option will not run on any other type of
1542 processor or vice versa.
1546 depends on SYS_HAS_CPU_R4300
1547 select CPU_SUPPORTS_32BIT_KERNEL
1548 select CPU_SUPPORTS_64BIT_KERNEL
1550 MIPS Technologies R4300-series processors.
1554 depends on SYS_HAS_CPU_R4X00
1555 select CPU_SUPPORTS_32BIT_KERNEL
1556 select CPU_SUPPORTS_64BIT_KERNEL
1557 select CPU_SUPPORTS_HUGEPAGES
1559 MIPS Technologies R4000-series processors other than 4300, including
1560 the R4000, R4400, R4600, and 4700.
1564 depends on SYS_HAS_CPU_TX49XX
1565 select CPU_HAS_PREFETCH
1566 select CPU_SUPPORTS_32BIT_KERNEL
1567 select CPU_SUPPORTS_64BIT_KERNEL
1568 select CPU_SUPPORTS_HUGEPAGES
1572 depends on SYS_HAS_CPU_R5000
1573 select CPU_SUPPORTS_32BIT_KERNEL
1574 select CPU_SUPPORTS_64BIT_KERNEL
1575 select CPU_SUPPORTS_HUGEPAGES
1577 MIPS Technologies R5000-series processors other than the Nevada.
1581 depends on SYS_HAS_CPU_R5432
1582 select CPU_SUPPORTS_32BIT_KERNEL
1583 select CPU_SUPPORTS_64BIT_KERNEL
1584 select CPU_SUPPORTS_HUGEPAGES
1588 depends on SYS_HAS_CPU_R5500
1589 select CPU_SUPPORTS_32BIT_KERNEL
1590 select CPU_SUPPORTS_64BIT_KERNEL
1591 select CPU_SUPPORTS_HUGEPAGES
1593 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1598 depends on SYS_HAS_CPU_R6000
1599 select CPU_SUPPORTS_32BIT_KERNEL
1601 MIPS Technologies R6000 and R6000A series processors. Note these
1602 processors are extremely rare and the support for them is incomplete.
1606 depends on SYS_HAS_CPU_NEVADA
1607 select CPU_SUPPORTS_32BIT_KERNEL
1608 select CPU_SUPPORTS_64BIT_KERNEL
1609 select CPU_SUPPORTS_HUGEPAGES
1611 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1615 depends on SYS_HAS_CPU_R8000
1616 select CPU_HAS_PREFETCH
1617 select CPU_SUPPORTS_64BIT_KERNEL
1619 MIPS Technologies R8000 processors. Note these processors are
1620 uncommon and the support for them is incomplete.
1624 depends on SYS_HAS_CPU_R10000
1625 select CPU_HAS_PREFETCH
1626 select CPU_SUPPORTS_32BIT_KERNEL
1627 select CPU_SUPPORTS_64BIT_KERNEL
1628 select CPU_SUPPORTS_HIGHMEM
1629 select CPU_SUPPORTS_HUGEPAGES
1631 MIPS Technologies R10000-series processors.
1635 depends on SYS_HAS_CPU_RM7000
1636 select CPU_HAS_PREFETCH
1637 select CPU_SUPPORTS_32BIT_KERNEL
1638 select CPU_SUPPORTS_64BIT_KERNEL
1639 select CPU_SUPPORTS_HIGHMEM
1640 select CPU_SUPPORTS_HUGEPAGES
1644 depends on SYS_HAS_CPU_SB1
1645 select CPU_SUPPORTS_32BIT_KERNEL
1646 select CPU_SUPPORTS_64BIT_KERNEL
1647 select CPU_SUPPORTS_HIGHMEM
1648 select CPU_SUPPORTS_HUGEPAGES
1649 select WEAK_ORDERING
1651 config CPU_CAVIUM_OCTEON
1652 bool "Cavium Octeon processor"
1653 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1654 select CPU_HAS_PREFETCH
1655 select CPU_SUPPORTS_64BIT_KERNEL
1656 select WEAK_ORDERING
1657 select CPU_SUPPORTS_HIGHMEM
1658 select CPU_SUPPORTS_HUGEPAGES
1659 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1660 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1661 select MIPS_L1_CACHE_SHIFT_7
1663 The Cavium Octeon processor is a highly integrated chip containing
1664 many ethernet hardware widgets for networking tasks. The processor
1665 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1666 Full details can be found at http://www.caviumnetworks.com.
1669 bool "Broadcom BMIPS"
1670 depends on SYS_HAS_CPU_BMIPS
1672 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1673 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1674 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1675 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1676 select CPU_SUPPORTS_32BIT_KERNEL
1677 select DMA_NONCOHERENT
1679 select SWAP_IO_SPACE
1680 select WEAK_ORDERING
1681 select CPU_SUPPORTS_HIGHMEM
1682 select CPU_HAS_PREFETCH
1684 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1687 bool "Netlogic XLR SoC"
1688 depends on SYS_HAS_CPU_XLR
1689 select CPU_SUPPORTS_32BIT_KERNEL
1690 select CPU_SUPPORTS_64BIT_KERNEL
1691 select CPU_SUPPORTS_HIGHMEM
1692 select CPU_SUPPORTS_HUGEPAGES
1693 select WEAK_ORDERING
1694 select WEAK_REORDERING_BEYOND_LLSC
1696 Netlogic Microsystems XLR/XLS processors.
1699 bool "Netlogic XLP SoC"
1700 depends on SYS_HAS_CPU_XLP
1701 select CPU_SUPPORTS_32BIT_KERNEL
1702 select CPU_SUPPORTS_64BIT_KERNEL
1703 select CPU_SUPPORTS_HIGHMEM
1704 select WEAK_ORDERING
1705 select WEAK_REORDERING_BEYOND_LLSC
1706 select CPU_HAS_PREFETCH
1708 select CPU_SUPPORTS_HUGEPAGES
1709 select MIPS_ASID_BITS_VARIABLE
1711 Netlogic Microsystems XLP processors.
1714 config CPU_MIPS32_3_5_FEATURES
1715 bool "MIPS32 Release 3.5 Features"
1716 depends on SYS_HAS_CPU_MIPS32_R3_5
1717 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1719 Choose this option to build a kernel for release 2 or later of the
1720 MIPS32 architecture including features from the 3.5 release such as
1721 support for Enhanced Virtual Addressing (EVA).
1723 config CPU_MIPS32_3_5_EVA
1724 bool "Enhanced Virtual Addressing (EVA)"
1725 depends on CPU_MIPS32_3_5_FEATURES
1729 Choose this option if you want to enable the Enhanced Virtual
1730 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1731 One of its primary benefits is an increase in the maximum size
1732 of lowmem (up to 3GB). If unsure, say 'N' here.
1734 config CPU_MIPS32_R5_FEATURES
1735 bool "MIPS32 Release 5 Features"
1736 depends on SYS_HAS_CPU_MIPS32_R5
1737 depends on CPU_MIPS32_R2
1739 Choose this option to build a kernel for release 2 or later of the
1740 MIPS32 architecture including features from release 5 such as
1741 support for Extended Physical Addressing (XPA).
1743 config CPU_MIPS32_R5_XPA
1744 bool "Extended Physical Addressing (XPA)"
1745 depends on CPU_MIPS32_R5_FEATURES
1747 depends on !PAGE_SIZE_4KB
1748 depends on SYS_SUPPORTS_HIGHMEM
1751 select ARCH_PHYS_ADDR_T_64BIT
1754 Choose this option if you want to enable the Extended Physical
1755 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1756 benefit is to increase physical addressing equal to or greater
1757 than 40 bits. Note that this has the side effect of turning on
1758 64-bit addressing which in turn makes the PTEs 64-bit in size.
1759 If unsure, say 'N' here.
1762 config CPU_NOP_WORKAROUNDS
1765 config CPU_JUMP_WORKAROUNDS
1768 config CPU_LOONGSON2F_WORKAROUNDS
1769 bool "Loongson 2F Workarounds"
1771 select CPU_NOP_WORKAROUNDS
1772 select CPU_JUMP_WORKAROUNDS
1774 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1775 require workarounds. Without workarounds the system may hang
1776 unexpectedly. For more information please refer to the gas
1777 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1779 Loongson 2F03 and later have fixed these issues and no workarounds
1780 are needed. The workarounds have no significant side effect on them
1781 but may decrease the performance of the system so this option should
1782 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1785 If unsure, please say Y.
1786 endif # CPU_LOONGSON2F
1788 config SYS_SUPPORTS_ZBOOT
1790 select HAVE_KERNEL_GZIP
1791 select HAVE_KERNEL_BZIP2
1792 select HAVE_KERNEL_LZ4
1793 select HAVE_KERNEL_LZMA
1794 select HAVE_KERNEL_LZO
1795 select HAVE_KERNEL_XZ
1797 config SYS_SUPPORTS_ZBOOT_UART16550
1799 select SYS_SUPPORTS_ZBOOT
1801 config SYS_SUPPORTS_ZBOOT_UART_PROM
1803 select SYS_SUPPORTS_ZBOOT
1805 config CPU_LOONGSON2
1807 select CPU_SUPPORTS_32BIT_KERNEL
1808 select CPU_SUPPORTS_64BIT_KERNEL
1809 select CPU_SUPPORTS_HIGHMEM
1810 select CPU_SUPPORTS_HUGEPAGES
1812 config CPU_LOONGSON1
1816 select CPU_HAS_PREFETCH
1817 select CPU_SUPPORTS_32BIT_KERNEL
1818 select CPU_SUPPORTS_HIGHMEM
1819 select CPU_SUPPORTS_CPUFREQ
1821 config CPU_BMIPS32_3300
1822 select SMP_UP if SMP
1825 config CPU_BMIPS4350
1827 select SYS_SUPPORTS_SMP
1828 select SYS_SUPPORTS_HOTPLUG_CPU
1830 config CPU_BMIPS4380
1832 select MIPS_L1_CACHE_SHIFT_6
1833 select SYS_SUPPORTS_SMP
1834 select SYS_SUPPORTS_HOTPLUG_CPU
1836 config CPU_BMIPS5000
1838 select MIPS_CPU_SCACHE
1839 select MIPS_L1_CACHE_SHIFT_7
1840 select SYS_SUPPORTS_SMP
1841 select SYS_SUPPORTS_HOTPLUG_CPU
1843 config SYS_HAS_CPU_LOONGSON3
1845 select CPU_SUPPORTS_CPUFREQ
1848 config SYS_HAS_CPU_LOONGSON2E
1851 config SYS_HAS_CPU_LOONGSON2F
1853 select CPU_SUPPORTS_CPUFREQ
1854 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1855 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1857 config SYS_HAS_CPU_LOONGSON1B
1860 config SYS_HAS_CPU_MIPS32_R1
1863 config SYS_HAS_CPU_MIPS32_R2
1866 config SYS_HAS_CPU_MIPS32_R3_5
1869 config SYS_HAS_CPU_MIPS32_R5
1872 config SYS_HAS_CPU_MIPS32_R6
1875 config SYS_HAS_CPU_MIPS64_R1
1878 config SYS_HAS_CPU_MIPS64_R2
1881 config SYS_HAS_CPU_MIPS64_R6
1884 config SYS_HAS_CPU_R3000
1887 config SYS_HAS_CPU_TX39XX
1890 config SYS_HAS_CPU_VR41XX
1893 config SYS_HAS_CPU_R4300
1896 config SYS_HAS_CPU_R4X00
1899 config SYS_HAS_CPU_TX49XX
1902 config SYS_HAS_CPU_R5000
1905 config SYS_HAS_CPU_R5432
1908 config SYS_HAS_CPU_R5500
1911 config SYS_HAS_CPU_R6000
1914 config SYS_HAS_CPU_NEVADA
1917 config SYS_HAS_CPU_R8000
1920 config SYS_HAS_CPU_R10000
1923 config SYS_HAS_CPU_RM7000
1926 config SYS_HAS_CPU_SB1
1929 config SYS_HAS_CPU_CAVIUM_OCTEON
1932 config SYS_HAS_CPU_BMIPS
1935 config SYS_HAS_CPU_BMIPS32_3300
1937 select SYS_HAS_CPU_BMIPS
1939 config SYS_HAS_CPU_BMIPS4350
1941 select SYS_HAS_CPU_BMIPS
1943 config SYS_HAS_CPU_BMIPS4380
1945 select SYS_HAS_CPU_BMIPS
1947 config SYS_HAS_CPU_BMIPS5000
1949 select SYS_HAS_CPU_BMIPS
1951 config SYS_HAS_CPU_XLR
1954 config SYS_HAS_CPU_XLP
1957 config MIPS_MALTA_PM
1958 depends on MIPS_MALTA
1964 # CPU may reorder R->R, R->W, W->R, W->W
1965 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1967 config WEAK_ORDERING
1971 # CPU may reorder reads and writes beyond LL/SC
1972 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1974 config WEAK_REORDERING_BEYOND_LLSC
1979 # These two indicate any level of the MIPS32 and MIPS64 architecture
1983 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1987 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1990 # These two indicate the revision of the architecture, either Release 1 or Release 2
1994 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1998 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2004 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2006 select HAVE_ARCH_BITREVERSE
2007 select MIPS_ASID_BITS_VARIABLE
2016 config SYS_SUPPORTS_32BIT_KERNEL
2018 config SYS_SUPPORTS_64BIT_KERNEL
2020 config CPU_SUPPORTS_32BIT_KERNEL
2022 config CPU_SUPPORTS_64BIT_KERNEL
2024 config CPU_SUPPORTS_CPUFREQ
2026 config CPU_SUPPORTS_ADDRWINCFG
2028 config CPU_SUPPORTS_HUGEPAGES
2030 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2032 config MIPS_PGD_C0_CONTEXT
2034 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2037 # Set to y for ptrace access to watch registers.
2039 config HARDWARE_WATCHPOINTS
2041 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2046 prompt "Kernel code model"
2048 You should only select this option if you have a workload that
2049 actually benefits from 64-bit processing or if your machine has
2050 large memory. You will only be presented a single option in this
2051 menu if your system does not support both 32-bit and 64-bit kernels.
2054 bool "32-bit kernel"
2055 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2058 Select this option if you want to build a 32-bit kernel.
2061 bool "64-bit kernel"
2062 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2064 Select this option if you want to build a 64-bit kernel.
2069 bool "KVM Guest Kernel"
2070 depends on BROKEN_ON_SMP
2072 Select this option if building a guest kernel for KVM (Trap & Emulate)
2075 config KVM_GUEST_TIMER_FREQ
2076 int "Count/Compare Timer Frequency (MHz)"
2077 depends on KVM_GUEST
2080 Set this to non-zero if building a guest kernel for KVM to skip RTC
2081 emulation when determining guest CPU Frequency. Instead, the guest's
2082 timer frequency is specified directly.
2084 config MIPS_VA_BITS_48
2085 bool "48 bits virtual memory"
2088 Support a maximum at least 48 bits of application virtual memory.
2089 Default is 40 bits or less, depending on the CPU.
2090 This option result in a small memory overhead for page tables.
2091 This option is only supported with 16k and 64k page sizes.
2095 prompt "Kernel page size"
2096 default PAGE_SIZE_4KB
2098 config PAGE_SIZE_4KB
2100 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2101 depends on !MIPS_VA_BITS_48
2103 This option select the standard 4kB Linux page size. On some
2104 R3000-family processors this is the only available page size. Using
2105 4kB page size will minimize memory consumption and is therefore
2106 recommended for low memory systems.
2108 config PAGE_SIZE_8KB
2110 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2111 depends on !MIPS_VA_BITS_48
2113 Using 8kB page size will result in higher performance kernel at
2114 the price of higher memory consumption. This option is available
2115 only on R8000 and cnMIPS processors. Note that you will need a
2116 suitable Linux distribution to support this.
2118 config PAGE_SIZE_16KB
2120 depends on !CPU_R3000 && !CPU_TX39XX
2122 Using 16kB page size will result in higher performance kernel at
2123 the price of higher memory consumption. This option is available on
2124 all non-R3000 family processors. Note that you will need a suitable
2125 Linux distribution to support this.
2127 config PAGE_SIZE_32KB
2129 depends on CPU_CAVIUM_OCTEON
2130 depends on !MIPS_VA_BITS_48
2132 Using 32kB page size will result in higher performance kernel at
2133 the price of higher memory consumption. This option is available
2134 only on cnMIPS cores. Note that you will need a suitable Linux
2135 distribution to support this.
2137 config PAGE_SIZE_64KB
2139 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2141 Using 64kB page size will result in higher performance kernel at
2142 the price of higher memory consumption. This option is available on
2143 all non-R3000 family processor. Not that at the time of this
2144 writing this option is still high experimental.
2148 config FORCE_MAX_ZONEORDER
2149 int "Maximum zone order"
2150 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2151 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2152 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2153 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2154 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2155 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2159 The kernel memory allocator divides physically contiguous memory
2160 blocks into "zones", where each zone is a power of two number of
2161 pages. This option selects the largest power of two that the kernel
2162 keeps in the memory allocator. If you need to allocate very large
2163 blocks of physically contiguous memory, then you may need to
2164 increase this value.
2166 This config option is actually maximum order plus one. For example,
2167 a value of 11 means that the largest free memory block is 2^10 pages.
2169 The page size is not necessarily 4KB. Keep this in mind
2170 when choosing a value for this option.
2175 config IP22_CPU_SCACHE
2180 # Support for a MIPS32 / MIPS64 style S-caches
2182 config MIPS_CPU_SCACHE
2186 config R5000_CPU_SCACHE
2190 config RM7000_CPU_SCACHE
2194 config SIBYTE_DMA_PAGEOPS
2195 bool "Use DMA to clear/copy pages"
2198 Instead of using the CPU to zero and copy pages, use a Data Mover
2199 channel. These DMA channels are otherwise unused by the standard
2200 SiByte Linux port. Seems to give a small performance benefit.
2202 config CPU_HAS_PREFETCH
2205 config CPU_GENERIC_DUMP_TLB
2207 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2211 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2213 config CPU_R4K_CACHE_TLB
2215 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2218 bool "MIPS MT SMP support (1 TC on each available VPE)"
2219 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2220 select CPU_MIPSR2_IRQ_VI
2221 select CPU_MIPSR2_IRQ_EI
2226 select SYS_SUPPORTS_SMP
2227 select SYS_SUPPORTS_SCHED_SMT
2228 select MIPS_PERF_SHARED_TC_COUNTERS
2230 This is a kernel model which is known as SMVP. This is supported
2231 on cores with the MT ASE and uses the available VPEs to implement
2232 virtual processors which supports SMP. This is equivalent to the
2233 Intel Hyperthreading feature. For further information go to
2234 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2240 bool "SMT (multithreading) scheduler support"
2241 depends on SYS_SUPPORTS_SCHED_SMT
2244 SMT scheduler support improves the CPU scheduler's decision making
2245 when dealing with MIPS MT enabled cores at a cost of slightly
2246 increased overhead in some places. If unsure say N here.
2248 config SYS_SUPPORTS_SCHED_SMT
2251 config SYS_SUPPORTS_MULTITHREADING
2254 config MIPS_MT_FPAFF
2255 bool "Dynamic FPU affinity for FP-intensive threads"
2257 depends on MIPS_MT_SMP
2259 config MIPSR2_TO_R6_EMULATOR
2260 bool "MIPS R2-to-R6 emulator"
2261 depends on CPU_MIPSR6 && !SMP
2264 Choose this option if you want to run non-R6 MIPS userland code.
2265 Even if you say 'Y' here, the emulator will still be disabled by
2266 default. You can enable it using the 'mipsr2emu' kernel option.
2267 The only reason this is a build-time option is to save ~14K from the
2269 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2270 depends on SMP && CPU_MIPSR6
2272 config MIPS_VPE_LOADER
2273 bool "VPE loader support."
2274 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2275 select CPU_MIPSR2_IRQ_VI
2276 select CPU_MIPSR2_IRQ_EI
2279 Includes a loader for loading an elf relocatable object
2280 onto another VPE and running it.
2282 config MIPS_VPE_LOADER_CMP
2285 depends on MIPS_VPE_LOADER && MIPS_CMP
2287 config MIPS_VPE_LOADER_MT
2290 depends on MIPS_VPE_LOADER && !MIPS_CMP
2292 config MIPS_VPE_LOADER_TOM
2293 bool "Load VPE program into memory hidden from linux"
2294 depends on MIPS_VPE_LOADER
2297 The loader can use memory that is present but has been hidden from
2298 Linux using the kernel command line option "mem=xxMB". It's up to
2299 you to ensure the amount you put in the option and the space your
2300 program requires is less or equal to the amount physically present.
2302 config MIPS_VPE_APSP_API
2303 bool "Enable support for AP/SP API (RTLX)"
2304 depends on MIPS_VPE_LOADER
2307 config MIPS_VPE_APSP_API_CMP
2310 depends on MIPS_VPE_APSP_API && MIPS_CMP
2312 config MIPS_VPE_APSP_API_MT
2315 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2318 bool "MIPS CMP framework support (DEPRECATED)"
2319 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2322 select SYS_SUPPORTS_SMP
2323 select WEAK_ORDERING
2326 Select this if you are using a bootloader which implements the "CMP
2327 framework" protocol (ie. YAMON) and want your kernel to make use of
2328 its ability to start secondary CPUs.
2330 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2334 bool "MIPS Coherent Processing System support"
2335 depends on SYS_SUPPORTS_MIPS_CPS
2338 select MIPS_CPS_PM if HOTPLUG_CPU
2340 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2341 select SYS_SUPPORTS_HOTPLUG_CPU
2342 select SYS_SUPPORTS_SMP
2343 select WEAK_ORDERING
2345 Select this if you wish to run an SMP kernel across multiple cores
2346 within a MIPS Coherent Processing System. When this option is
2347 enabled the kernel will probe for other cores and boot them with
2348 no external assistance. It is safe to enable this when hardware
2349 support is unavailable.
2362 config SB1_PASS_2_WORKAROUNDS
2364 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2367 config SB1_PASS_2_1_WORKAROUNDS
2369 depends on CPU_SB1 && CPU_SB1_PASS_2
2373 config ARCH_PHYS_ADDR_T_64BIT
2377 prompt "SmartMIPS or microMIPS ASE support"
2379 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2382 Select this if you want neither microMIPS nor SmartMIPS support
2384 config CPU_HAS_SMARTMIPS
2385 depends on SYS_SUPPORTS_SMARTMIPS
2388 SmartMIPS is a extension of the MIPS32 architecture aimed at
2389 increased security at both hardware and software level for
2390 smartcards. Enabling this option will allow proper use of the
2391 SmartMIPS instructions by Linux applications. However a kernel with
2392 this option will not work on a MIPS core without SmartMIPS core. If
2393 you don't know you probably don't have SmartMIPS and should say N
2396 config CPU_MICROMIPS
2397 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2400 When this option is enabled the kernel will be built using the
2406 bool "Support for the MIPS SIMD Architecture"
2407 depends on CPU_SUPPORTS_MSA
2408 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2410 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2411 and a set of SIMD instructions to operate on them. When this option
2412 is enabled the kernel will support allocating & switching MSA
2413 vector register contexts. If you know that your kernel will only be
2414 running on CPUs which do not support MSA or that your userland will
2415 not be making use of it then you may wish to say N here to reduce
2416 the size & complexity of your kernel.
2430 # Vectored interrupt mode is an R2 feature
2432 config CPU_MIPSR2_IRQ_VI
2436 # Extended interrupt mode is an R2 feature
2438 config CPU_MIPSR2_IRQ_EI
2443 depends on !CPU_R3000
2449 config CPU_DADDI_WORKAROUNDS
2452 config CPU_R4000_WORKAROUNDS
2454 select CPU_R4400_WORKAROUNDS
2456 config CPU_R4400_WORKAROUNDS
2459 config MIPS_ASID_SHIFT
2461 default 6 if CPU_R3000 || CPU_TX39XX
2462 default 4 if CPU_R8000
2465 config MIPS_ASID_BITS
2467 default 0 if MIPS_ASID_BITS_VARIABLE
2468 default 6 if CPU_R3000 || CPU_TX39XX
2471 config MIPS_ASID_BITS_VARIABLE
2475 # - Highmem only makes sense for the 32-bit kernel.
2476 # - The current highmem code will only work properly on physically indexed
2477 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2478 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2479 # moment we protect the user and offer the highmem option only on machines
2480 # where it's known to be safe. This will not offer highmem on a few systems
2481 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2482 # indexed CPUs but we're playing safe.
2483 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2484 # know they might have memory configurations that could make use of highmem
2488 bool "High Memory Support"
2489 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2491 config CPU_SUPPORTS_HIGHMEM
2494 config SYS_SUPPORTS_HIGHMEM
2497 config SYS_SUPPORTS_SMARTMIPS
2500 config SYS_SUPPORTS_MICROMIPS
2503 config SYS_SUPPORTS_MIPS16
2506 This option must be set if a kernel might be executed on a MIPS16-
2507 enabled CPU even if MIPS16 is not actually being used. In other
2508 words, it makes the kernel MIPS16-tolerant.
2510 config CPU_SUPPORTS_MSA
2513 config ARCH_FLATMEM_ENABLE
2515 depends on !NUMA && !CPU_LOONGSON2
2517 config ARCH_DISCONTIGMEM_ENABLE
2519 default y if SGI_IP27
2521 Say Y to support efficient handling of discontiguous physical memory,
2522 for architectures which are either NUMA (Non-Uniform Memory Access)
2523 or have huge holes in the physical address space for other reasons.
2524 See <file:Documentation/vm/numa> for more.
2526 config ARCH_SPARSEMEM_ENABLE
2528 select SPARSEMEM_STATIC
2532 depends on SYS_SUPPORTS_NUMA
2534 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2535 Access). This option improves performance on systems with more
2536 than two nodes; on two node systems it is generally better to
2537 leave it disabled; on single node systems disable this option
2540 config SYS_SUPPORTS_NUMA
2544 bool "Relocatable kernel"
2545 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2547 This builds a kernel image that retains relocation information
2548 so it can be loaded someplace besides the default 1MB.
2549 The relocations make the kernel binary about 15% larger,
2550 but are discarded at runtime
2552 config RELOCATION_TABLE_SIZE
2553 hex "Relocation table size"
2554 depends on RELOCATABLE
2555 range 0x0 0x01000000
2556 default "0x00100000"
2558 A table of relocation data will be appended to the kernel binary
2559 and parsed at boot to fix up the relocated kernel.
2561 This option allows the amount of space reserved for the table to be
2562 adjusted, although the default of 1Mb should be ok in most cases.
2564 The build will fail and a valid size suggested if this is too small.
2566 If unsure, leave at the default value.
2568 config RANDOMIZE_BASE
2569 bool "Randomize the address of the kernel image"
2570 depends on RELOCATABLE
2572 Randomizes the physical and virtual address at which the
2573 kernel image is loaded, as a security feature that
2574 deters exploit attempts relying on knowledge of the location
2575 of kernel internals.
2577 Entropy is generated using any coprocessor 0 registers available.
2579 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2583 config RANDOMIZE_BASE_MAX_OFFSET
2584 hex "Maximum kASLR offset" if EXPERT
2585 depends on RANDOMIZE_BASE
2586 range 0x0 0x40000000 if EVA || 64BIT
2587 range 0x0 0x08000000
2588 default "0x01000000"
2590 When kASLR is active, this provides the maximum offset that will
2591 be applied to the kernel image. It should be set according to the
2592 amount of physical RAM available in the target system minus
2593 PHYSICAL_START and must be a power of 2.
2595 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2596 EVA or 64-bit. The default is 16Mb.
2601 depends on NEED_MULTIPLE_NODES
2603 config HW_PERF_EVENTS
2604 bool "Enable hardware performance counter support for perf events"
2605 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2608 Enable hardware performance counter support for perf events. If
2609 disabled, perf events will use software events only.
2614 bool "Multi-Processing support"
2615 depends on SYS_SUPPORTS_SMP
2617 This enables support for systems with more than one CPU. If you have
2618 a system with only one CPU, say N. If you have a system with more
2619 than one CPU, say Y.
2621 If you say N here, the kernel will run on uni- and multiprocessor
2622 machines, but will use only one CPU of a multiprocessor machine. If
2623 you say Y here, the kernel will run on many, but not all,
2624 uniprocessor machines. On a uniprocessor machine, the kernel
2625 will run faster if you say N here.
2627 People using multiprocessor machines who say Y here should also say
2628 Y to "Enhanced Real Time Clock Support", below.
2630 See also the SMP-HOWTO available at
2631 <http://www.tldp.org/docs.html#howto>.
2633 If you don't know what to do here, say N.
2638 config SYS_SUPPORTS_MIPS_CMP
2641 config SYS_SUPPORTS_MIPS_CPS
2644 config SYS_SUPPORTS_SMP
2647 config NR_CPUS_DEFAULT_4
2650 config NR_CPUS_DEFAULT_8
2653 config NR_CPUS_DEFAULT_16
2656 config NR_CPUS_DEFAULT_32
2659 config NR_CPUS_DEFAULT_64
2663 int "Maximum number of CPUs (2-256)"
2666 default "4" if NR_CPUS_DEFAULT_4
2667 default "8" if NR_CPUS_DEFAULT_8
2668 default "16" if NR_CPUS_DEFAULT_16
2669 default "32" if NR_CPUS_DEFAULT_32
2670 default "64" if NR_CPUS_DEFAULT_64
2672 This allows you to specify the maximum number of CPUs which this
2673 kernel will support. The maximum supported value is 32 for 32-bit
2674 kernel and 64 for 64-bit kernels; the minimum value which makes
2675 sense is 1 for Qemu (useful only for kernel debugging purposes)
2676 and 2 for all others.
2678 This is purely to save memory - each supported CPU adds
2679 approximately eight kilobytes to the kernel image. For best
2680 performance should round up your number of processors to the next
2683 config MIPS_PERF_SHARED_TC_COUNTERS
2687 # Timer Interrupt Frequency Configuration
2691 prompt "Timer frequency"
2694 Allows the configuration of the timer frequency.
2697 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2700 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2703 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2706 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2709 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2712 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2715 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2718 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2722 config SYS_SUPPORTS_24HZ
2725 config SYS_SUPPORTS_48HZ
2728 config SYS_SUPPORTS_100HZ
2731 config SYS_SUPPORTS_128HZ
2734 config SYS_SUPPORTS_250HZ
2737 config SYS_SUPPORTS_256HZ
2740 config SYS_SUPPORTS_1000HZ
2743 config SYS_SUPPORTS_1024HZ
2746 config SYS_SUPPORTS_ARBIT_HZ
2748 default y if !SYS_SUPPORTS_24HZ && \
2749 !SYS_SUPPORTS_48HZ && \
2750 !SYS_SUPPORTS_100HZ && \
2751 !SYS_SUPPORTS_128HZ && \
2752 !SYS_SUPPORTS_250HZ && \
2753 !SYS_SUPPORTS_256HZ && \
2754 !SYS_SUPPORTS_1000HZ && \
2755 !SYS_SUPPORTS_1024HZ
2761 default 100 if HZ_100
2762 default 128 if HZ_128
2763 default 250 if HZ_250
2764 default 256 if HZ_256
2765 default 1000 if HZ_1000
2766 default 1024 if HZ_1024
2769 def_bool HIGH_RES_TIMERS
2771 source "kernel/Kconfig.preempt"
2774 bool "Kexec system call"
2777 kexec is a system call that implements the ability to shutdown your
2778 current kernel, and to start another kernel. It is like a reboot
2779 but it is independent of the system firmware. And like a reboot
2780 you can start any kernel with it, not just Linux.
2782 The name comes from the similarity to the exec system call.
2784 It is an ongoing process to be certain the hardware in a machine
2785 is properly shutdown, so do not be surprised if this code does not
2786 initially work for you. As of this writing the exact hardware
2787 interface is strongly in flux, so no good recommendation can be
2791 bool "Kernel crash dumps"
2793 Generate crash dump after being started by kexec.
2794 This should be normally only set in special crash dump kernels
2795 which are loaded in the main kernel with kexec-tools into
2796 a specially reserved region and then later executed after
2797 a crash by kdump/kexec. The crash dump kernel must be compiled
2798 to a memory address not used by the main kernel or firmware using
2801 config PHYSICAL_START
2802 hex "Physical address where the kernel is loaded"
2803 default "0xffffffff84000000" if 64BIT
2804 default "0x84000000" if 32BIT
2805 depends on CRASH_DUMP
2807 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2808 If you plan to use kernel for capturing the crash dump change
2809 this value to start of the reserved region (the "X" value as
2810 specified in the "crashkernel=YM@XM" command line boot parameter
2811 passed to the panic-ed kernel).
2814 bool "Enable seccomp to safely compute untrusted bytecode"
2818 This kernel feature is useful for number crunching applications
2819 that may need to compute untrusted bytecode during their
2820 execution. By using pipes or other transports made available to
2821 the process as file descriptors supporting the read/write
2822 syscalls, it's possible to isolate those applications in
2823 their own address space using seccomp. Once seccomp is
2824 enabled via /proc/<pid>/seccomp, it cannot be disabled
2825 and the task is only allowed to execute a few safe syscalls
2826 defined by each seccomp mode.
2828 If unsure, say Y. Only embedded should say N here.
2830 config MIPS_O32_FP64_SUPPORT
2831 bool "Support for O32 binaries using 64-bit FP"
2832 depends on 32BIT || MIPS32_O32
2834 When this is enabled, the kernel will support use of 64-bit floating
2835 point registers with binaries using the O32 ABI along with the
2836 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2837 32-bit MIPS systems this support is at the cost of increasing the
2838 size and complexity of the compiled FPU emulator. Thus if you are
2839 running a MIPS32 system and know that none of your userland binaries
2840 will require 64-bit floating point, you may wish to reduce the size
2841 of your kernel & potentially improve FP emulation performance by
2844 Although binutils currently supports use of this flag the details
2845 concerning its effect upon the O32 ABI in userland are still being
2846 worked on. In order to avoid userland becoming dependant upon current
2847 behaviour before the details have been finalised, this option should
2848 be considered experimental and only enabled by those working upon
2856 select OF_EARLY_FLATTREE
2863 prompt "Kernel appended dtb support" if USE_OF
2864 default MIPS_NO_APPENDED_DTB
2866 config MIPS_NO_APPENDED_DTB
2869 Do not enable appended dtb support.
2871 config MIPS_ELF_APPENDED_DTB
2874 With this option, the boot code will look for a device tree binary
2875 DTB) included in the vmlinux ELF section .appended_dtb. By default
2876 it is empty and the DTB can be appended using binutils command
2879 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2881 This is meant as a backward compatiblity convenience for those
2882 systems with a bootloader that can't be upgraded to accommodate
2883 the documented boot protocol using a device tree.
2885 config MIPS_RAW_APPENDED_DTB
2888 With this option, the boot code will look for a device tree binary
2889 DTB) appended to raw vmlinux.bin (without decompressor).
2890 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2892 This is meant as a backward compatibility convenience for those
2893 systems with a bootloader that can't be upgraded to accommodate
2894 the documented boot protocol using a device tree.
2896 Beware that there is very little in terms of protection against
2897 this option being confused by leftover garbage in memory that might
2898 look like a DTB header after a reboot if no actual DTB is appended
2899 to vmlinux.bin. Do not leave this option active in a production kernel
2900 if you don't intend to always append a DTB.
2902 config MIPS_ZBOOT_APPENDED_DTB
2904 depends on SYS_SUPPORTS_ZBOOT
2906 With this option, the boot code will look for a device tree binary
2907 DTB) appended to raw vmlinuz.bin (with decompressor).
2908 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2910 This is meant as a backward compatibility convenience for those
2911 systems with a bootloader that can't be upgraded to accommodate
2912 the documented boot protocol using a device tree.
2914 Beware that there is very little in terms of protection against
2915 this option being confused by leftover garbage in memory that might
2916 look like a DTB header after a reboot if no actual DTB is appended
2917 to vmlinuz.bin. Do not leave this option active in a production kernel
2918 if you don't intend to always append a DTB.
2922 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2923 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2924 !MIPS_MALTA && !MIPS_SEAD3 && \
2926 default MIPS_CMDLINE_FROM_BOOTLOADER
2928 config MIPS_CMDLINE_FROM_DTB
2930 bool "Dtb kernel arguments if available"
2932 config MIPS_CMDLINE_DTB_EXTEND
2934 bool "Extend dtb kernel arguments with bootloader arguments"
2936 config MIPS_CMDLINE_FROM_BOOTLOADER
2937 bool "Bootloader kernel arguments if available"
2939 config MIPS_CMDLINE_BUILTIN_EXTEND
2940 depends on CMDLINE_BOOL
2941 bool "Extend builtin kernel arguments with bootloader arguments"
2946 config LOCKDEP_SUPPORT
2950 config STACKTRACE_SUPPORT
2954 config HAVE_LATENCYTOP_SUPPORT
2958 config PGTABLE_LEVELS
2960 default 3 if 64BIT && !PAGE_SIZE_64KB
2963 source "init/Kconfig"
2965 source "kernel/Kconfig.freezer"
2967 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2975 bool "Support for PCI controller"
2976 depends on HW_HAS_PCI
2978 select NO_GENERIC_PCI_IOPORT_MAP
2980 Find out whether you have a PCI motherboard. PCI is the name of a
2981 bus system, i.e. the way the CPU talks to the other stuff inside
2982 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2986 bool "Support for HT-linked PCI"
2988 depends on CPU_LOONGSON3
2992 Loongson family machines use Hyper-Transport bus for inter-core
2993 connection and device connection. The PCI bus is a subordinate
2994 linked at HT. Choose Y for Loongson-3 based machines.
2999 source "drivers/pci/Kconfig"
3002 # ISA support is now enabled via select. Too many systems still have the one
3003 # or other ISA chip on the board that users don't know about so don't expect
3004 # users to choose the right thing ...
3011 depends on HW_HAS_EISA
3013 select GENERIC_ISA_DMA
3015 The Extended Industry Standard Architecture (EISA) bus was
3016 developed as an open alternative to the IBM MicroChannel bus.
3018 The EISA bus provided some of the features of the IBM MicroChannel
3019 bus while maintaining backward compatibility with cards made for
3020 the older ISA bus. The EISA bus saw limited use between 1988 and
3021 1995 when it was made obsolete by the PCI bus.
3023 Say Y here if you are building a kernel for an EISA-based machine.
3027 source "drivers/eisa/Kconfig"
3030 bool "TURBOchannel support"
3031 depends on MACH_DECSTATION
3033 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3034 processors. TURBOchannel programming specifications are available
3036 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3038 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3039 Linux driver support status is documented at:
3040 <http://www.linux-mips.org/wiki/DECstation>
3050 select MIPS_EXTERNAL_TIMER
3058 source "drivers/pcmcia/Kconfig"
3061 tristate "RapidIO support"
3065 If you say Y here, the kernel will include drivers and
3066 infrastructure code to support RapidIO interconnect devices.
3068 source "drivers/rapidio/Kconfig"
3072 menu "Executable file formats"
3074 source "fs/Kconfig.binfmt"
3079 config MIPS32_COMPAT
3085 config SYSVIPC_COMPAT
3089 bool "Kernel support for o32 binaries"
3091 select ARCH_WANT_OLD_COMPAT_IPC
3093 select MIPS32_COMPAT
3094 select SYSVIPC_COMPAT if SYSVIPC
3096 Select this option if you want to run o32 binaries. These are pure
3097 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3098 existing binaries are in this format.
3103 bool "Kernel support for n32 binaries"
3106 select MIPS32_COMPAT
3107 select SYSVIPC_COMPAT if SYSVIPC
3109 Select this option if you want to run n32 binaries. These are
3110 64-bit binaries using 32-bit quantities for addressing and certain
3111 data that would normally be 64-bit. They are used in special
3118 default y if MIPS32_O32 || MIPS32_N32
3122 menu "Power management options"
3124 config ARCH_HIBERNATION_POSSIBLE
3126 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3128 config ARCH_SUSPEND_POSSIBLE
3130 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3132 source "kernel/power/Kconfig"
3136 config MIPS_EXTERNAL_TIMER
3139 menu "CPU Power Management"
3141 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3142 source "drivers/cpufreq/Kconfig"
3145 source "drivers/cpuidle/Kconfig"
3149 source "net/Kconfig"
3151 source "drivers/Kconfig"
3153 source "drivers/firmware/Kconfig"
3157 source "arch/mips/Kconfig.debug"
3159 source "security/Kconfig"
3161 source "crypto/Kconfig"
3163 source "lib/Kconfig"
3165 source "arch/mips/kvm/Kconfig"