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
1710 Netlogic Microsystems XLP processors.
1713 config CPU_MIPS32_3_5_FEATURES
1714 bool "MIPS32 Release 3.5 Features"
1715 depends on SYS_HAS_CPU_MIPS32_R3_5
1716 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1718 Choose this option to build a kernel for release 2 or later of the
1719 MIPS32 architecture including features from the 3.5 release such as
1720 support for Enhanced Virtual Addressing (EVA).
1722 config CPU_MIPS32_3_5_EVA
1723 bool "Enhanced Virtual Addressing (EVA)"
1724 depends on CPU_MIPS32_3_5_FEATURES
1728 Choose this option if you want to enable the Enhanced Virtual
1729 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1730 One of its primary benefits is an increase in the maximum size
1731 of lowmem (up to 3GB). If unsure, say 'N' here.
1733 config CPU_MIPS32_R5_FEATURES
1734 bool "MIPS32 Release 5 Features"
1735 depends on SYS_HAS_CPU_MIPS32_R5
1736 depends on CPU_MIPS32_R2
1738 Choose this option to build a kernel for release 2 or later of the
1739 MIPS32 architecture including features from release 5 such as
1740 support for Extended Physical Addressing (XPA).
1742 config CPU_MIPS32_R5_XPA
1743 bool "Extended Physical Addressing (XPA)"
1744 depends on CPU_MIPS32_R5_FEATURES
1746 depends on !PAGE_SIZE_4KB
1747 depends on SYS_SUPPORTS_HIGHMEM
1750 select ARCH_PHYS_ADDR_T_64BIT
1753 Choose this option if you want to enable the Extended Physical
1754 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1755 benefit is to increase physical addressing equal to or greater
1756 than 40 bits. Note that this has the side effect of turning on
1757 64-bit addressing which in turn makes the PTEs 64-bit in size.
1758 If unsure, say 'N' here.
1761 config CPU_NOP_WORKAROUNDS
1764 config CPU_JUMP_WORKAROUNDS
1767 config CPU_LOONGSON2F_WORKAROUNDS
1768 bool "Loongson 2F Workarounds"
1770 select CPU_NOP_WORKAROUNDS
1771 select CPU_JUMP_WORKAROUNDS
1773 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1774 require workarounds. Without workarounds the system may hang
1775 unexpectedly. For more information please refer to the gas
1776 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1778 Loongson 2F03 and later have fixed these issues and no workarounds
1779 are needed. The workarounds have no significant side effect on them
1780 but may decrease the performance of the system so this option should
1781 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1784 If unsure, please say Y.
1785 endif # CPU_LOONGSON2F
1787 config SYS_SUPPORTS_ZBOOT
1789 select HAVE_KERNEL_GZIP
1790 select HAVE_KERNEL_BZIP2
1791 select HAVE_KERNEL_LZ4
1792 select HAVE_KERNEL_LZMA
1793 select HAVE_KERNEL_LZO
1794 select HAVE_KERNEL_XZ
1796 config SYS_SUPPORTS_ZBOOT_UART16550
1798 select SYS_SUPPORTS_ZBOOT
1800 config SYS_SUPPORTS_ZBOOT_UART_PROM
1802 select SYS_SUPPORTS_ZBOOT
1804 config CPU_LOONGSON2
1806 select CPU_SUPPORTS_32BIT_KERNEL
1807 select CPU_SUPPORTS_64BIT_KERNEL
1808 select CPU_SUPPORTS_HIGHMEM
1809 select CPU_SUPPORTS_HUGEPAGES
1811 config CPU_LOONGSON1
1815 select CPU_HAS_PREFETCH
1816 select CPU_SUPPORTS_32BIT_KERNEL
1817 select CPU_SUPPORTS_HIGHMEM
1818 select CPU_SUPPORTS_CPUFREQ
1820 config CPU_BMIPS32_3300
1821 select SMP_UP if SMP
1824 config CPU_BMIPS4350
1826 select SYS_SUPPORTS_SMP
1827 select SYS_SUPPORTS_HOTPLUG_CPU
1829 config CPU_BMIPS4380
1831 select MIPS_L1_CACHE_SHIFT_6
1832 select SYS_SUPPORTS_SMP
1833 select SYS_SUPPORTS_HOTPLUG_CPU
1835 config CPU_BMIPS5000
1837 select MIPS_CPU_SCACHE
1838 select MIPS_L1_CACHE_SHIFT_7
1839 select SYS_SUPPORTS_SMP
1840 select SYS_SUPPORTS_HOTPLUG_CPU
1842 config SYS_HAS_CPU_LOONGSON3
1844 select CPU_SUPPORTS_CPUFREQ
1847 config SYS_HAS_CPU_LOONGSON2E
1850 config SYS_HAS_CPU_LOONGSON2F
1852 select CPU_SUPPORTS_CPUFREQ
1853 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1854 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1856 config SYS_HAS_CPU_LOONGSON1B
1859 config SYS_HAS_CPU_MIPS32_R1
1862 config SYS_HAS_CPU_MIPS32_R2
1865 config SYS_HAS_CPU_MIPS32_R3_5
1868 config SYS_HAS_CPU_MIPS32_R5
1871 config SYS_HAS_CPU_MIPS32_R6
1874 config SYS_HAS_CPU_MIPS64_R1
1877 config SYS_HAS_CPU_MIPS64_R2
1880 config SYS_HAS_CPU_MIPS64_R6
1883 config SYS_HAS_CPU_R3000
1886 config SYS_HAS_CPU_TX39XX
1889 config SYS_HAS_CPU_VR41XX
1892 config SYS_HAS_CPU_R4300
1895 config SYS_HAS_CPU_R4X00
1898 config SYS_HAS_CPU_TX49XX
1901 config SYS_HAS_CPU_R5000
1904 config SYS_HAS_CPU_R5432
1907 config SYS_HAS_CPU_R5500
1910 config SYS_HAS_CPU_R6000
1913 config SYS_HAS_CPU_NEVADA
1916 config SYS_HAS_CPU_R8000
1919 config SYS_HAS_CPU_R10000
1922 config SYS_HAS_CPU_RM7000
1925 config SYS_HAS_CPU_SB1
1928 config SYS_HAS_CPU_CAVIUM_OCTEON
1931 config SYS_HAS_CPU_BMIPS
1934 config SYS_HAS_CPU_BMIPS32_3300
1936 select SYS_HAS_CPU_BMIPS
1938 config SYS_HAS_CPU_BMIPS4350
1940 select SYS_HAS_CPU_BMIPS
1942 config SYS_HAS_CPU_BMIPS4380
1944 select SYS_HAS_CPU_BMIPS
1946 config SYS_HAS_CPU_BMIPS5000
1948 select SYS_HAS_CPU_BMIPS
1950 config SYS_HAS_CPU_XLR
1953 config SYS_HAS_CPU_XLP
1956 config MIPS_MALTA_PM
1957 depends on MIPS_MALTA
1963 # CPU may reorder R->R, R->W, W->R, W->W
1964 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1966 config WEAK_ORDERING
1970 # CPU may reorder reads and writes beyond LL/SC
1971 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1973 config WEAK_REORDERING_BEYOND_LLSC
1978 # These two indicate any level of the MIPS32 and MIPS64 architecture
1982 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1986 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1989 # These two indicate the revision of the architecture, either Release 1 or Release 2
1993 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1997 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2002 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2003 select HAVE_ARCH_BITREVERSE
2012 config SYS_SUPPORTS_32BIT_KERNEL
2014 config SYS_SUPPORTS_64BIT_KERNEL
2016 config CPU_SUPPORTS_32BIT_KERNEL
2018 config CPU_SUPPORTS_64BIT_KERNEL
2020 config CPU_SUPPORTS_CPUFREQ
2022 config CPU_SUPPORTS_ADDRWINCFG
2024 config CPU_SUPPORTS_HUGEPAGES
2026 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2028 config MIPS_PGD_C0_CONTEXT
2030 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2033 # Set to y for ptrace access to watch registers.
2035 config HARDWARE_WATCHPOINTS
2037 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2042 prompt "Kernel code model"
2044 You should only select this option if you have a workload that
2045 actually benefits from 64-bit processing or if your machine has
2046 large memory. You will only be presented a single option in this
2047 menu if your system does not support both 32-bit and 64-bit kernels.
2050 bool "32-bit kernel"
2051 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2054 Select this option if you want to build a 32-bit kernel.
2057 bool "64-bit kernel"
2058 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2060 Select this option if you want to build a 64-bit kernel.
2065 bool "KVM Guest Kernel"
2066 depends on BROKEN_ON_SMP
2068 Select this option if building a guest kernel for KVM (Trap & Emulate)
2071 config KVM_GUEST_TIMER_FREQ
2072 int "Count/Compare Timer Frequency (MHz)"
2073 depends on KVM_GUEST
2076 Set this to non-zero if building a guest kernel for KVM to skip RTC
2077 emulation when determining guest CPU Frequency. Instead, the guest's
2078 timer frequency is specified directly.
2080 config MIPS_VA_BITS_48
2081 bool "48 bits virtual memory"
2084 Support a maximum at least 48 bits of application virtual memory.
2085 Default is 40 bits or less, depending on the CPU.
2086 This option result in a small memory overhead for page tables.
2087 This option is only supported with 16k and 64k page sizes.
2091 prompt "Kernel page size"
2092 default PAGE_SIZE_4KB
2094 config PAGE_SIZE_4KB
2096 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2097 depends on !MIPS_VA_BITS_48
2099 This option select the standard 4kB Linux page size. On some
2100 R3000-family processors this is the only available page size. Using
2101 4kB page size will minimize memory consumption and is therefore
2102 recommended for low memory systems.
2104 config PAGE_SIZE_8KB
2106 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2107 depends on !MIPS_VA_BITS_48
2109 Using 8kB page size will result in higher performance kernel at
2110 the price of higher memory consumption. This option is available
2111 only on R8000 and cnMIPS processors. Note that you will need a
2112 suitable Linux distribution to support this.
2114 config PAGE_SIZE_16KB
2116 depends on !CPU_R3000 && !CPU_TX39XX
2118 Using 16kB page size will result in higher performance kernel at
2119 the price of higher memory consumption. This option is available on
2120 all non-R3000 family processors. Note that you will need a suitable
2121 Linux distribution to support this.
2123 config PAGE_SIZE_32KB
2125 depends on CPU_CAVIUM_OCTEON
2126 depends on !MIPS_VA_BITS_48
2128 Using 32kB page size will result in higher performance kernel at
2129 the price of higher memory consumption. This option is available
2130 only on cnMIPS cores. Note that you will need a suitable Linux
2131 distribution to support this.
2133 config PAGE_SIZE_64KB
2135 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2137 Using 64kB page size will result in higher performance kernel at
2138 the price of higher memory consumption. This option is available on
2139 all non-R3000 family processor. Not that at the time of this
2140 writing this option is still high experimental.
2144 config FORCE_MAX_ZONEORDER
2145 int "Maximum zone order"
2146 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2147 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2148 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2149 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2150 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2151 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2155 The kernel memory allocator divides physically contiguous memory
2156 blocks into "zones", where each zone is a power of two number of
2157 pages. This option selects the largest power of two that the kernel
2158 keeps in the memory allocator. If you need to allocate very large
2159 blocks of physically contiguous memory, then you may need to
2160 increase this value.
2162 This config option is actually maximum order plus one. For example,
2163 a value of 11 means that the largest free memory block is 2^10 pages.
2165 The page size is not necessarily 4KB. Keep this in mind
2166 when choosing a value for this option.
2171 config IP22_CPU_SCACHE
2176 # Support for a MIPS32 / MIPS64 style S-caches
2178 config MIPS_CPU_SCACHE
2182 config R5000_CPU_SCACHE
2186 config RM7000_CPU_SCACHE
2190 config SIBYTE_DMA_PAGEOPS
2191 bool "Use DMA to clear/copy pages"
2194 Instead of using the CPU to zero and copy pages, use a Data Mover
2195 channel. These DMA channels are otherwise unused by the standard
2196 SiByte Linux port. Seems to give a small performance benefit.
2198 config CPU_HAS_PREFETCH
2201 config CPU_GENERIC_DUMP_TLB
2203 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2207 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2209 config CPU_R4K_CACHE_TLB
2211 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2214 bool "MIPS MT SMP support (1 TC on each available VPE)"
2215 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2216 select CPU_MIPSR2_IRQ_VI
2217 select CPU_MIPSR2_IRQ_EI
2222 select SYS_SUPPORTS_SMP
2223 select SYS_SUPPORTS_SCHED_SMT
2224 select MIPS_PERF_SHARED_TC_COUNTERS
2226 This is a kernel model which is known as SMVP. This is supported
2227 on cores with the MT ASE and uses the available VPEs to implement
2228 virtual processors which supports SMP. This is equivalent to the
2229 Intel Hyperthreading feature. For further information go to
2230 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2236 bool "SMT (multithreading) scheduler support"
2237 depends on SYS_SUPPORTS_SCHED_SMT
2240 SMT scheduler support improves the CPU scheduler's decision making
2241 when dealing with MIPS MT enabled cores at a cost of slightly
2242 increased overhead in some places. If unsure say N here.
2244 config SYS_SUPPORTS_SCHED_SMT
2247 config SYS_SUPPORTS_MULTITHREADING
2250 config MIPS_MT_FPAFF
2251 bool "Dynamic FPU affinity for FP-intensive threads"
2253 depends on MIPS_MT_SMP
2255 config MIPSR2_TO_R6_EMULATOR
2256 bool "MIPS R2-to-R6 emulator"
2257 depends on CPU_MIPSR6 && !SMP
2260 Choose this option if you want to run non-R6 MIPS userland code.
2261 Even if you say 'Y' here, the emulator will still be disabled by
2262 default. You can enable it using the 'mipsr2emu' kernel option.
2263 The only reason this is a build-time option is to save ~14K from the
2265 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2266 depends on SMP && CPU_MIPSR6
2268 config MIPS_VPE_LOADER
2269 bool "VPE loader support."
2270 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2271 select CPU_MIPSR2_IRQ_VI
2272 select CPU_MIPSR2_IRQ_EI
2275 Includes a loader for loading an elf relocatable object
2276 onto another VPE and running it.
2278 config MIPS_VPE_LOADER_CMP
2281 depends on MIPS_VPE_LOADER && MIPS_CMP
2283 config MIPS_VPE_LOADER_MT
2286 depends on MIPS_VPE_LOADER && !MIPS_CMP
2288 config MIPS_VPE_LOADER_TOM
2289 bool "Load VPE program into memory hidden from linux"
2290 depends on MIPS_VPE_LOADER
2293 The loader can use memory that is present but has been hidden from
2294 Linux using the kernel command line option "mem=xxMB". It's up to
2295 you to ensure the amount you put in the option and the space your
2296 program requires is less or equal to the amount physically present.
2298 config MIPS_VPE_APSP_API
2299 bool "Enable support for AP/SP API (RTLX)"
2300 depends on MIPS_VPE_LOADER
2303 config MIPS_VPE_APSP_API_CMP
2306 depends on MIPS_VPE_APSP_API && MIPS_CMP
2308 config MIPS_VPE_APSP_API_MT
2311 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2314 bool "MIPS CMP framework support (DEPRECATED)"
2315 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2318 select SYS_SUPPORTS_SMP
2319 select WEAK_ORDERING
2322 Select this if you are using a bootloader which implements the "CMP
2323 framework" protocol (ie. YAMON) and want your kernel to make use of
2324 its ability to start secondary CPUs.
2326 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2330 bool "MIPS Coherent Processing System support"
2331 depends on SYS_SUPPORTS_MIPS_CPS
2334 select MIPS_CPS_PM if HOTPLUG_CPU
2336 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2337 select SYS_SUPPORTS_HOTPLUG_CPU
2338 select SYS_SUPPORTS_SMP
2339 select WEAK_ORDERING
2341 Select this if you wish to run an SMP kernel across multiple cores
2342 within a MIPS Coherent Processing System. When this option is
2343 enabled the kernel will probe for other cores and boot them with
2344 no external assistance. It is safe to enable this when hardware
2345 support is unavailable.
2358 config SB1_PASS_2_WORKAROUNDS
2360 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2363 config SB1_PASS_2_1_WORKAROUNDS
2365 depends on CPU_SB1 && CPU_SB1_PASS_2
2369 config ARCH_PHYS_ADDR_T_64BIT
2373 prompt "SmartMIPS or microMIPS ASE support"
2375 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2378 Select this if you want neither microMIPS nor SmartMIPS support
2380 config CPU_HAS_SMARTMIPS
2381 depends on SYS_SUPPORTS_SMARTMIPS
2384 SmartMIPS is a extension of the MIPS32 architecture aimed at
2385 increased security at both hardware and software level for
2386 smartcards. Enabling this option will allow proper use of the
2387 SmartMIPS instructions by Linux applications. However a kernel with
2388 this option will not work on a MIPS core without SmartMIPS core. If
2389 you don't know you probably don't have SmartMIPS and should say N
2392 config CPU_MICROMIPS
2393 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2396 When this option is enabled the kernel will be built using the
2402 bool "Support for the MIPS SIMD Architecture"
2403 depends on CPU_SUPPORTS_MSA
2404 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2406 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2407 and a set of SIMD instructions to operate on them. When this option
2408 is enabled the kernel will support allocating & switching MSA
2409 vector register contexts. If you know that your kernel will only be
2410 running on CPUs which do not support MSA or that your userland will
2411 not be making use of it then you may wish to say N here to reduce
2412 the size & complexity of your kernel.
2423 # Vectored interrupt mode is an R2 feature
2425 config CPU_MIPSR2_IRQ_VI
2429 # Extended interrupt mode is an R2 feature
2431 config CPU_MIPSR2_IRQ_EI
2436 depends on !CPU_R3000
2442 config CPU_DADDI_WORKAROUNDS
2445 config CPU_R4000_WORKAROUNDS
2447 select CPU_R4400_WORKAROUNDS
2449 config CPU_R4400_WORKAROUNDS
2453 # - Highmem only makes sense for the 32-bit kernel.
2454 # - The current highmem code will only work properly on physically indexed
2455 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2456 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2457 # moment we protect the user and offer the highmem option only on machines
2458 # where it's known to be safe. This will not offer highmem on a few systems
2459 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2460 # indexed CPUs but we're playing safe.
2461 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2462 # know they might have memory configurations that could make use of highmem
2466 bool "High Memory Support"
2467 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2469 config CPU_SUPPORTS_HIGHMEM
2472 config SYS_SUPPORTS_HIGHMEM
2475 config SYS_SUPPORTS_SMARTMIPS
2478 config SYS_SUPPORTS_MICROMIPS
2481 config SYS_SUPPORTS_MIPS16
2484 This option must be set if a kernel might be executed on a MIPS16-
2485 enabled CPU even if MIPS16 is not actually being used. In other
2486 words, it makes the kernel MIPS16-tolerant.
2488 config CPU_SUPPORTS_MSA
2491 config ARCH_FLATMEM_ENABLE
2493 depends on !NUMA && !CPU_LOONGSON2
2495 config ARCH_DISCONTIGMEM_ENABLE
2497 default y if SGI_IP27
2499 Say Y to support efficient handling of discontiguous physical memory,
2500 for architectures which are either NUMA (Non-Uniform Memory Access)
2501 or have huge holes in the physical address space for other reasons.
2502 See <file:Documentation/vm/numa> for more.
2504 config ARCH_SPARSEMEM_ENABLE
2506 select SPARSEMEM_STATIC
2510 depends on SYS_SUPPORTS_NUMA
2512 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2513 Access). This option improves performance on systems with more
2514 than two nodes; on two node systems it is generally better to
2515 leave it disabled; on single node systems disable this option
2518 config SYS_SUPPORTS_NUMA
2522 bool "Relocatable kernel"
2523 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2525 This builds a kernel image that retains relocation information
2526 so it can be loaded someplace besides the default 1MB.
2527 The relocations make the kernel binary about 15% larger,
2528 but are discarded at runtime
2530 config RELOCATION_TABLE_SIZE
2531 hex "Relocation table size"
2532 depends on RELOCATABLE
2533 range 0x0 0x01000000
2534 default "0x00100000"
2536 A table of relocation data will be appended to the kernel binary
2537 and parsed at boot to fix up the relocated kernel.
2539 This option allows the amount of space reserved for the table to be
2540 adjusted, although the default of 1Mb should be ok in most cases.
2542 The build will fail and a valid size suggested if this is too small.
2544 If unsure, leave at the default value.
2546 config RANDOMIZE_BASE
2547 bool "Randomize the address of the kernel image"
2548 depends on RELOCATABLE
2550 Randomizes the physical and virtual address at which the
2551 kernel image is loaded, as a security feature that
2552 deters exploit attempts relying on knowledge of the location
2553 of kernel internals.
2555 Entropy is generated using any coprocessor 0 registers available.
2557 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2561 config RANDOMIZE_BASE_MAX_OFFSET
2562 hex "Maximum kASLR offset" if EXPERT
2563 depends on RANDOMIZE_BASE
2564 range 0x0 0x40000000 if EVA || 64BIT
2565 range 0x0 0x08000000
2566 default "0x01000000"
2568 When kASLR is active, this provides the maximum offset that will
2569 be applied to the kernel image. It should be set according to the
2570 amount of physical RAM available in the target system minus
2571 PHYSICAL_START and must be a power of 2.
2573 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2574 EVA or 64-bit. The default is 16Mb.
2579 depends on NEED_MULTIPLE_NODES
2581 config HW_PERF_EVENTS
2582 bool "Enable hardware performance counter support for perf events"
2583 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2586 Enable hardware performance counter support for perf events. If
2587 disabled, perf events will use software events only.
2592 bool "Multi-Processing support"
2593 depends on SYS_SUPPORTS_SMP
2595 This enables support for systems with more than one CPU. If you have
2596 a system with only one CPU, say N. If you have a system with more
2597 than one CPU, say Y.
2599 If you say N here, the kernel will run on uni- and multiprocessor
2600 machines, but will use only one CPU of a multiprocessor machine. If
2601 you say Y here, the kernel will run on many, but not all,
2602 uniprocessor machines. On a uniprocessor machine, the kernel
2603 will run faster if you say N here.
2605 People using multiprocessor machines who say Y here should also say
2606 Y to "Enhanced Real Time Clock Support", below.
2608 See also the SMP-HOWTO available at
2609 <http://www.tldp.org/docs.html#howto>.
2611 If you don't know what to do here, say N.
2616 config SYS_SUPPORTS_MIPS_CMP
2619 config SYS_SUPPORTS_MIPS_CPS
2622 config SYS_SUPPORTS_SMP
2625 config NR_CPUS_DEFAULT_4
2628 config NR_CPUS_DEFAULT_8
2631 config NR_CPUS_DEFAULT_16
2634 config NR_CPUS_DEFAULT_32
2637 config NR_CPUS_DEFAULT_64
2641 int "Maximum number of CPUs (2-256)"
2644 default "4" if NR_CPUS_DEFAULT_4
2645 default "8" if NR_CPUS_DEFAULT_8
2646 default "16" if NR_CPUS_DEFAULT_16
2647 default "32" if NR_CPUS_DEFAULT_32
2648 default "64" if NR_CPUS_DEFAULT_64
2650 This allows you to specify the maximum number of CPUs which this
2651 kernel will support. The maximum supported value is 32 for 32-bit
2652 kernel and 64 for 64-bit kernels; the minimum value which makes
2653 sense is 1 for Qemu (useful only for kernel debugging purposes)
2654 and 2 for all others.
2656 This is purely to save memory - each supported CPU adds
2657 approximately eight kilobytes to the kernel image. For best
2658 performance should round up your number of processors to the next
2661 config MIPS_PERF_SHARED_TC_COUNTERS
2665 # Timer Interrupt Frequency Configuration
2669 prompt "Timer frequency"
2672 Allows the configuration of the timer frequency.
2675 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2678 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2681 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2684 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2687 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2690 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2693 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2696 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2700 config SYS_SUPPORTS_24HZ
2703 config SYS_SUPPORTS_48HZ
2706 config SYS_SUPPORTS_100HZ
2709 config SYS_SUPPORTS_128HZ
2712 config SYS_SUPPORTS_250HZ
2715 config SYS_SUPPORTS_256HZ
2718 config SYS_SUPPORTS_1000HZ
2721 config SYS_SUPPORTS_1024HZ
2724 config SYS_SUPPORTS_ARBIT_HZ
2726 default y if !SYS_SUPPORTS_24HZ && \
2727 !SYS_SUPPORTS_48HZ && \
2728 !SYS_SUPPORTS_100HZ && \
2729 !SYS_SUPPORTS_128HZ && \
2730 !SYS_SUPPORTS_250HZ && \
2731 !SYS_SUPPORTS_256HZ && \
2732 !SYS_SUPPORTS_1000HZ && \
2733 !SYS_SUPPORTS_1024HZ
2739 default 100 if HZ_100
2740 default 128 if HZ_128
2741 default 250 if HZ_250
2742 default 256 if HZ_256
2743 default 1000 if HZ_1000
2744 default 1024 if HZ_1024
2747 def_bool HIGH_RES_TIMERS
2749 source "kernel/Kconfig.preempt"
2752 bool "Kexec system call"
2755 kexec is a system call that implements the ability to shutdown your
2756 current kernel, and to start another kernel. It is like a reboot
2757 but it is independent of the system firmware. And like a reboot
2758 you can start any kernel with it, not just Linux.
2760 The name comes from the similarity to the exec system call.
2762 It is an ongoing process to be certain the hardware in a machine
2763 is properly shutdown, so do not be surprised if this code does not
2764 initially work for you. As of this writing the exact hardware
2765 interface is strongly in flux, so no good recommendation can be
2769 bool "Kernel crash dumps"
2771 Generate crash dump after being started by kexec.
2772 This should be normally only set in special crash dump kernels
2773 which are loaded in the main kernel with kexec-tools into
2774 a specially reserved region and then later executed after
2775 a crash by kdump/kexec. The crash dump kernel must be compiled
2776 to a memory address not used by the main kernel or firmware using
2779 config PHYSICAL_START
2780 hex "Physical address where the kernel is loaded"
2781 default "0xffffffff84000000" if 64BIT
2782 default "0x84000000" if 32BIT
2783 depends on CRASH_DUMP
2785 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2786 If you plan to use kernel for capturing the crash dump change
2787 this value to start of the reserved region (the "X" value as
2788 specified in the "crashkernel=YM@XM" command line boot parameter
2789 passed to the panic-ed kernel).
2792 bool "Enable seccomp to safely compute untrusted bytecode"
2796 This kernel feature is useful for number crunching applications
2797 that may need to compute untrusted bytecode during their
2798 execution. By using pipes or other transports made available to
2799 the process as file descriptors supporting the read/write
2800 syscalls, it's possible to isolate those applications in
2801 their own address space using seccomp. Once seccomp is
2802 enabled via /proc/<pid>/seccomp, it cannot be disabled
2803 and the task is only allowed to execute a few safe syscalls
2804 defined by each seccomp mode.
2806 If unsure, say Y. Only embedded should say N here.
2808 config MIPS_O32_FP64_SUPPORT
2809 bool "Support for O32 binaries using 64-bit FP"
2810 depends on 32BIT || MIPS32_O32
2812 When this is enabled, the kernel will support use of 64-bit floating
2813 point registers with binaries using the O32 ABI along with the
2814 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2815 32-bit MIPS systems this support is at the cost of increasing the
2816 size and complexity of the compiled FPU emulator. Thus if you are
2817 running a MIPS32 system and know that none of your userland binaries
2818 will require 64-bit floating point, you may wish to reduce the size
2819 of your kernel & potentially improve FP emulation performance by
2822 Although binutils currently supports use of this flag the details
2823 concerning its effect upon the O32 ABI in userland are still being
2824 worked on. In order to avoid userland becoming dependant upon current
2825 behaviour before the details have been finalised, this option should
2826 be considered experimental and only enabled by those working upon
2834 select OF_EARLY_FLATTREE
2841 prompt "Kernel appended dtb support" if USE_OF
2842 default MIPS_NO_APPENDED_DTB
2844 config MIPS_NO_APPENDED_DTB
2847 Do not enable appended dtb support.
2849 config MIPS_ELF_APPENDED_DTB
2852 With this option, the boot code will look for a device tree binary
2853 DTB) included in the vmlinux ELF section .appended_dtb. By default
2854 it is empty and the DTB can be appended using binutils command
2857 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2859 This is meant as a backward compatiblity convenience for those
2860 systems with a bootloader that can't be upgraded to accommodate
2861 the documented boot protocol using a device tree.
2863 config MIPS_RAW_APPENDED_DTB
2866 With this option, the boot code will look for a device tree binary
2867 DTB) appended to raw vmlinux.bin (without decompressor).
2868 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2870 This is meant as a backward compatibility convenience for those
2871 systems with a bootloader that can't be upgraded to accommodate
2872 the documented boot protocol using a device tree.
2874 Beware that there is very little in terms of protection against
2875 this option being confused by leftover garbage in memory that might
2876 look like a DTB header after a reboot if no actual DTB is appended
2877 to vmlinux.bin. Do not leave this option active in a production kernel
2878 if you don't intend to always append a DTB.
2880 config MIPS_ZBOOT_APPENDED_DTB
2882 depends on SYS_SUPPORTS_ZBOOT
2884 With this option, the boot code will look for a device tree binary
2885 DTB) appended to raw vmlinuz.bin (with decompressor).
2886 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2888 This is meant as a backward compatibility convenience for those
2889 systems with a bootloader that can't be upgraded to accommodate
2890 the documented boot protocol using a device tree.
2892 Beware that there is very little in terms of protection against
2893 this option being confused by leftover garbage in memory that might
2894 look like a DTB header after a reboot if no actual DTB is appended
2895 to vmlinuz.bin. Do not leave this option active in a production kernel
2896 if you don't intend to always append a DTB.
2900 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2901 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2902 !MIPS_MALTA && !MIPS_SEAD3 && \
2904 default MIPS_CMDLINE_FROM_BOOTLOADER
2906 config MIPS_CMDLINE_FROM_DTB
2908 bool "Dtb kernel arguments if available"
2910 config MIPS_CMDLINE_DTB_EXTEND
2912 bool "Extend dtb kernel arguments with bootloader arguments"
2914 config MIPS_CMDLINE_FROM_BOOTLOADER
2915 bool "Bootloader kernel arguments if available"
2920 config LOCKDEP_SUPPORT
2924 config STACKTRACE_SUPPORT
2928 config HAVE_LATENCYTOP_SUPPORT
2932 config PGTABLE_LEVELS
2934 default 3 if 64BIT && !PAGE_SIZE_64KB
2937 source "init/Kconfig"
2939 source "kernel/Kconfig.freezer"
2941 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2949 bool "Support for PCI controller"
2950 depends on HW_HAS_PCI
2952 select NO_GENERIC_PCI_IOPORT_MAP
2954 Find out whether you have a PCI motherboard. PCI is the name of a
2955 bus system, i.e. the way the CPU talks to the other stuff inside
2956 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2960 bool "Support for HT-linked PCI"
2962 depends on CPU_LOONGSON3
2966 Loongson family machines use Hyper-Transport bus for inter-core
2967 connection and device connection. The PCI bus is a subordinate
2968 linked at HT. Choose Y for Loongson-3 based machines.
2973 source "drivers/pci/Kconfig"
2976 # ISA support is now enabled via select. Too many systems still have the one
2977 # or other ISA chip on the board that users don't know about so don't expect
2978 # users to choose the right thing ...
2985 depends on HW_HAS_EISA
2987 select GENERIC_ISA_DMA
2989 The Extended Industry Standard Architecture (EISA) bus was
2990 developed as an open alternative to the IBM MicroChannel bus.
2992 The EISA bus provided some of the features of the IBM MicroChannel
2993 bus while maintaining backward compatibility with cards made for
2994 the older ISA bus. The EISA bus saw limited use between 1988 and
2995 1995 when it was made obsolete by the PCI bus.
2997 Say Y here if you are building a kernel for an EISA-based machine.
3001 source "drivers/eisa/Kconfig"
3004 bool "TURBOchannel support"
3005 depends on MACH_DECSTATION
3007 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3008 processors. TURBOchannel programming specifications are available
3010 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3012 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3013 Linux driver support status is documented at:
3014 <http://www.linux-mips.org/wiki/DECstation>
3024 select MIPS_EXTERNAL_TIMER
3032 source "drivers/pcmcia/Kconfig"
3035 tristate "RapidIO support"
3039 If you say Y here, the kernel will include drivers and
3040 infrastructure code to support RapidIO interconnect devices.
3042 source "drivers/rapidio/Kconfig"
3046 menu "Executable file formats"
3048 source "fs/Kconfig.binfmt"
3053 config MIPS32_COMPAT
3059 config SYSVIPC_COMPAT
3063 bool "Kernel support for o32 binaries"
3065 select ARCH_WANT_OLD_COMPAT_IPC
3067 select MIPS32_COMPAT
3068 select SYSVIPC_COMPAT if SYSVIPC
3070 Select this option if you want to run o32 binaries. These are pure
3071 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3072 existing binaries are in this format.
3077 bool "Kernel support for n32 binaries"
3080 select MIPS32_COMPAT
3081 select SYSVIPC_COMPAT if SYSVIPC
3083 Select this option if you want to run n32 binaries. These are
3084 64-bit binaries using 32-bit quantities for addressing and certain
3085 data that would normally be 64-bit. They are used in special
3092 default y if MIPS32_O32 || MIPS32_N32
3096 menu "Power management options"
3098 config ARCH_HIBERNATION_POSSIBLE
3100 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3102 config ARCH_SUSPEND_POSSIBLE
3104 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3106 source "kernel/power/Kconfig"
3110 config MIPS_EXTERNAL_TIMER
3113 menu "CPU Power Management"
3115 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3116 source "drivers/cpufreq/Kconfig"
3119 source "drivers/cpuidle/Kconfig"
3123 source "net/Kconfig"
3125 source "drivers/Kconfig"
3127 source "drivers/firmware/Kconfig"
3131 source "arch/mips/Kconfig.debug"
3133 source "security/Kconfig"
3135 source "crypto/Kconfig"
3137 source "lib/Kconfig"
3139 source "arch/mips/kvm/Kconfig"