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_CBPF_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
53 select MODULES_USE_ELF_REL if MODULES
54 select MODULES_USE_ELF_RELA if MODULES && 64BIT
55 select CLONE_BACKWARDS
56 select HAVE_DEBUG_STACKOVERFLOW
57 select HAVE_CC_STACKPROTECTOR
58 select CPU_PM if CPU_IDLE
59 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
60 select ARCH_BINFMT_ELF_STATE
61 select SYSCTL_EXCEPTION_TRACE
62 select HAVE_VIRT_CPU_ACCOUNTING_GEN
63 select HAVE_IRQ_TIME_ACCOUNTING
64 select GENERIC_TIME_VSYSCALL
65 select ARCH_CLOCKSOURCE_DATA
66 select HANDLE_DOMAIN_IRQ
68 menu "Machine selection"
75 bool "Alchemy processor based machines"
76 select ARCH_PHYS_ADDR_T_64BIT
80 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
81 select SYS_HAS_CPU_MIPS32_R1
82 select SYS_SUPPORTS_32BIT_KERNEL
83 select SYS_SUPPORTS_APM_EMULATION
85 select SYS_SUPPORTS_ZBOOT
89 bool "Texas Instruments AR7"
91 select DMA_NONCOHERENT
97 select SYS_HAS_CPU_MIPS32_R1
98 select SYS_HAS_EARLY_PRINTK
99 select SYS_SUPPORTS_32BIT_KERNEL
100 select SYS_SUPPORTS_LITTLE_ENDIAN
101 select SYS_SUPPORTS_MIPS16
102 select SYS_SUPPORTS_ZBOOT_UART16550
107 Support for the Texas Instruments AR7 System-on-a-Chip
108 family: TNETD7100, 7200 and 7300.
111 bool "Atheros AR231x/AR531x SoC support"
114 select DMA_NONCOHERENT
117 select SYS_HAS_CPU_MIPS32_R1
118 select SYS_SUPPORTS_BIG_ENDIAN
119 select SYS_SUPPORTS_32BIT_KERNEL
120 select SYS_HAS_EARLY_PRINTK
122 Support for Atheros AR231x and Atheros AR531x based boards
125 bool "Atheros AR71XX/AR724X/AR913X based boards"
126 select ARCH_HAS_RESET_CONTROLLER
130 select DMA_NONCOHERENT
137 select SYS_HAS_CPU_MIPS32_R2
138 select SYS_HAS_EARLY_PRINTK
139 select SYS_SUPPORTS_32BIT_KERNEL
140 select SYS_SUPPORTS_BIG_ENDIAN
141 select SYS_SUPPORTS_MIPS16
142 select SYS_SUPPORTS_ZBOOT_UART_PROM
145 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
148 bool "Broadcom Generic BMIPS kernel"
150 select NO_EXCEPT_FILL
156 select BCM6345_L1_IRQ
157 select BCM7038_L1_IRQ
158 select BCM7120_L2_IRQ
159 select BRCMSTB_L2_IRQ
161 select DMA_NONCOHERENT
162 select SYS_SUPPORTS_32BIT_KERNEL
163 select SYS_SUPPORTS_LITTLE_ENDIAN
164 select SYS_SUPPORTS_BIG_ENDIAN
165 select SYS_SUPPORTS_HIGHMEM
166 select SYS_HAS_CPU_BMIPS32_3300
167 select SYS_HAS_CPU_BMIPS4350
168 select SYS_HAS_CPU_BMIPS4380
169 select SYS_HAS_CPU_BMIPS5000
171 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
172 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
173 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
174 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
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"
186 select DMA_NONCOHERENT
189 select SYS_HAS_CPU_MIPS32_R1
190 select NO_EXCEPT_FILL
191 select SYS_SUPPORTS_32BIT_KERNEL
192 select SYS_SUPPORTS_LITTLE_ENDIAN
193 select SYS_SUPPORTS_MIPS16
194 select SYS_HAS_EARLY_PRINTK
195 select USE_GENERIC_EARLY_PRINTK_8250
197 select LEDS_GPIO_REGISTER
201 Support for BCM47XX based boards
204 bool "Broadcom BCM63XX based boards"
209 select DMA_NONCOHERENT
211 select SYS_SUPPORTS_32BIT_KERNEL
212 select SYS_SUPPORTS_BIG_ENDIAN
213 select SYS_HAS_EARLY_PRINTK
217 select MIPS_L1_CACHE_SHIFT_4
219 Support for BCM63XX based boards
226 select DMA_NONCOHERENT
232 select PCI_GT64XXX_PCI0
234 select SYS_HAS_CPU_NEVADA
235 select SYS_HAS_EARLY_PRINTK
236 select SYS_SUPPORTS_32BIT_KERNEL
237 select SYS_SUPPORTS_64BIT_KERNEL
238 select SYS_SUPPORTS_LITTLE_ENDIAN
239 select USE_GENERIC_EARLY_PRINTK_8250
241 config MACH_DECSTATION
245 select CEVT_R4K if CPU_R4X00
247 select CSRC_R4K if CPU_R4X00
248 select CPU_DADDI_WORKAROUNDS if 64BIT
249 select CPU_R4000_WORKAROUNDS if 64BIT
250 select CPU_R4400_WORKAROUNDS if 64BIT
251 select DMA_NONCOHERENT
254 select SYS_HAS_CPU_R3000
255 select SYS_HAS_CPU_R4X00
256 select SYS_SUPPORTS_32BIT_KERNEL
257 select SYS_SUPPORTS_64BIT_KERNEL
258 select SYS_SUPPORTS_LITTLE_ENDIAN
259 select SYS_SUPPORTS_128HZ
260 select SYS_SUPPORTS_256HZ
261 select SYS_SUPPORTS_1024HZ
262 select MIPS_L1_CACHE_SHIFT_4
264 This enables support for DEC's MIPS based workstations. For details
265 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
266 DECstation porting pages on <http://decstation.unix-ag.org/>.
268 If you have one of the following DECstation Models you definitely
269 want to choose R4xx0 for the CPU Type:
276 otherwise choose R3000.
279 bool "Jazz family of machines"
282 select ARCH_MAY_HAVE_PC_FDC
285 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
286 select GENERIC_ISA_DMA
287 select HAVE_PCSPKR_PLATFORM
292 select SYS_HAS_CPU_R4X00
293 select SYS_SUPPORTS_32BIT_KERNEL
294 select SYS_SUPPORTS_64BIT_KERNEL
295 select SYS_SUPPORTS_100HZ
297 This a family of machines based on the MIPS R4030 chipset which was
298 used by several vendors to build RISC/os and Windows NT workstations.
299 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
300 Olivetti M700-10 workstations.
303 bool "Ingenic SoC based machines"
304 select SYS_SUPPORTS_32BIT_KERNEL
305 select SYS_SUPPORTS_LITTLE_ENDIAN
306 select SYS_SUPPORTS_ZBOOT_UART16550
307 select DMA_NONCOHERENT
311 select GENERIC_IRQ_CHIP
317 bool "Lantiq based platforms"
318 select DMA_NONCOHERENT
322 select SYS_HAS_CPU_MIPS32_R1
323 select SYS_HAS_CPU_MIPS32_R2
324 select SYS_SUPPORTS_BIG_ENDIAN
325 select SYS_SUPPORTS_32BIT_KERNEL
326 select SYS_SUPPORTS_MIPS16
327 select SYS_SUPPORTS_MULTITHREADING
328 select SYS_HAS_EARLY_PRINTK
335 select PINCTRL_LANTIQ
336 select ARCH_HAS_RESET_CONTROLLER
337 select RESET_CONTROLLER
340 bool "LASAT Networks platforms"
344 select DMA_NONCOHERENT
345 select SYS_HAS_EARLY_PRINTK
348 select PCI_GT64XXX_PCI0
350 select R5000_CPU_SCACHE
351 select SYS_HAS_CPU_R5000
352 select SYS_SUPPORTS_32BIT_KERNEL
353 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
354 select SYS_SUPPORTS_LITTLE_ENDIAN
356 config MACH_LOONGSON32
357 bool "Loongson-1 family of machines"
358 select SYS_SUPPORTS_ZBOOT
360 This enables support for the Loongson-1 family of machines.
362 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
363 the Institute of Computing Technology (ICT), Chinese Academy of
366 config MACH_LOONGSON64
367 bool "Loongson-2/3 family of machines"
368 select SYS_SUPPORTS_ZBOOT
370 This enables the support of Loongson-2/3 family of machines.
372 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
373 family of multi-core CPUs. They are both 64-bit general-purpose
374 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
375 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
376 in the People's Republic of China. The chief architect is Professor
379 config MACH_PISTACHIO
380 bool "IMG Pistachio SoC based boards"
384 select CLKSRC_MIPS_GIC
387 select DMA_MAYBE_COHERENT
392 select MIPS_CPU_SCACHE
396 select SYS_HAS_CPU_MIPS32_R2
397 select SYS_SUPPORTS_32BIT_KERNEL
398 select SYS_SUPPORTS_LITTLE_ENDIAN
399 select SYS_SUPPORTS_MIPS_CPS
400 select SYS_SUPPORTS_MULTITHREADING
401 select SYS_SUPPORTS_ZBOOT
402 select SYS_HAS_EARLY_PRINTK
403 select USE_GENERIC_EARLY_PRINTK_8250
406 This enables support for the IMG Pistachio SoC platform.
409 bool "MIPSfpga Xilinx based boards"
419 select MIPS_CPU_SCACHE
420 select SYS_HAS_EARLY_PRINTK
421 select SYS_HAS_CPU_MIPS32_R2
422 select SYS_SUPPORTS_32BIT_KERNEL
423 select SYS_SUPPORTS_LITTLE_ENDIAN
424 select SYS_SUPPORTS_ZBOOT_UART16550
426 select USE_GENERIC_EARLY_PRINTK_8250
428 This enables support for the IMG University Program MIPSfpga platform.
431 bool "MIPS Malta board"
432 select ARCH_MAY_HAVE_PC_FDC
438 select CLKSRC_MIPS_GIC
440 select DMA_MAYBE_COHERENT
441 select GENERIC_ISA_DMA
442 select HAVE_PCSPKR_PLATFORM
449 select MIPS_CPU_SCACHE
450 select MIPS_L1_CACHE_SHIFT_6
451 select PCI_GT64XXX_PCI0
455 select SYS_HAS_CPU_MIPS32_R1
456 select SYS_HAS_CPU_MIPS32_R2
457 select SYS_HAS_CPU_MIPS32_R3_5
458 select SYS_HAS_CPU_MIPS32_R5
459 select SYS_HAS_CPU_MIPS32_R6
460 select SYS_HAS_CPU_MIPS64_R1
461 select SYS_HAS_CPU_MIPS64_R2
462 select SYS_HAS_CPU_MIPS64_R6
463 select SYS_HAS_CPU_NEVADA
464 select SYS_HAS_CPU_RM7000
465 select SYS_SUPPORTS_32BIT_KERNEL
466 select SYS_SUPPORTS_64BIT_KERNEL
467 select SYS_SUPPORTS_BIG_ENDIAN
468 select SYS_SUPPORTS_HIGHMEM
469 select SYS_SUPPORTS_LITTLE_ENDIAN
470 select SYS_SUPPORTS_MICROMIPS
471 select SYS_SUPPORTS_MIPS_CMP
472 select SYS_SUPPORTS_MIPS_CPS
473 select SYS_SUPPORTS_MIPS16
474 select SYS_SUPPORTS_MULTITHREADING
475 select SYS_SUPPORTS_SMARTMIPS
476 select SYS_SUPPORTS_ZBOOT
477 select SYS_SUPPORTS_RELOCATABLE
479 select ZONE_DMA32 if 64BIT
483 This enables support for the MIPS Technologies Malta evaluation
487 bool "Microchip PIC32 Family"
489 This enables support for the Microchip PIC32 family of platforms.
491 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
495 bool "MIPS SEAD3 board"
501 select CLKSRC_MIPS_GIC
503 select CPU_MIPSR2_IRQ_VI
504 select CPU_MIPSR2_IRQ_EI
505 select DMA_NONCOHERENT
510 select SYS_HAS_CPU_MIPS32_R1
511 select SYS_HAS_CPU_MIPS32_R2
512 select SYS_HAS_CPU_MIPS32_R6
513 select SYS_HAS_CPU_MIPS64_R1
514 select SYS_HAS_EARLY_PRINTK
515 select SYS_SUPPORTS_32BIT_KERNEL
516 select SYS_SUPPORTS_64BIT_KERNEL
517 select SYS_SUPPORTS_BIG_ENDIAN
518 select SYS_SUPPORTS_LITTLE_ENDIAN
519 select SYS_SUPPORTS_SMARTMIPS
520 select SYS_SUPPORTS_MICROMIPS
521 select SYS_SUPPORTS_MIPS16
522 select SYS_SUPPORTS_RELOCATABLE
523 select USB_EHCI_BIG_ENDIAN_DESC
524 select USB_EHCI_BIG_ENDIAN_MMIO
527 This enables support for the MIPS Technologies SEAD3 evaluation
531 bool "NEC EMMA2RH Mark-eins board"
535 This enables support for the NEC Electronics Mark-eins boards.
538 bool "NEC VR4100 series based machines"
541 select SYS_HAS_CPU_VR41XX
542 select SYS_SUPPORTS_MIPS16
546 bool "NXP STB220 board"
549 Support for NXP Semiconductors STB220 Development Board.
556 Support for NXP Semiconductors STB225 Development Board.
559 bool "PMC-Sierra MSP chipsets"
562 select DMA_NONCOHERENT
564 select NO_EXCEPT_FILL
566 select SYS_HAS_CPU_MIPS32_R1
567 select SYS_HAS_CPU_MIPS32_R2
568 select SYS_SUPPORTS_32BIT_KERNEL
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_MIPS16
573 select SERIAL_8250_CONSOLE
574 select USB_EHCI_BIG_ENDIAN_MMIO
575 select USB_EHCI_BIG_ENDIAN_DESC
577 This adds support for the PMC-Sierra family of Multi-Service
578 Processor System-On-A-Chips. These parts include a number
579 of integrated peripherals, interfaces and DSPs in addition to
580 a variety of MIPS cores.
583 bool "Ralink based machines"
587 select DMA_NONCOHERENT
590 select SYS_HAS_CPU_MIPS32_R1
591 select SYS_HAS_CPU_MIPS32_R2
592 select SYS_SUPPORTS_32BIT_KERNEL
593 select SYS_SUPPORTS_LITTLE_ENDIAN
594 select SYS_SUPPORTS_MIPS16
595 select SYS_HAS_EARLY_PRINTK
597 select ARCH_HAS_RESET_CONTROLLER
598 select RESET_CONTROLLER
601 bool "SGI IP22 (Indy/Indigo2)"
607 select DEFAULT_SGI_PARTITION
608 select DMA_NONCOHERENT
612 select IP22_CPU_SCACHE
614 select GENERIC_ISA_DMA_SUPPORT_BROKEN
616 select SGI_HAS_INDYDOG
622 select SYS_HAS_CPU_R4X00
623 select SYS_HAS_CPU_R5000
625 # Disable EARLY_PRINTK for now since it leads to overwritten prom
626 # memory during early boot on some machines.
628 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
629 # for a more details discussion
631 # select SYS_HAS_EARLY_PRINTK
632 select SYS_SUPPORTS_32BIT_KERNEL
633 select SYS_SUPPORTS_64BIT_KERNEL
634 select SYS_SUPPORTS_BIG_ENDIAN
635 select MIPS_L1_CACHE_SHIFT_7
637 This are the SGI Indy, Challenge S and Indigo2, as well as certain
638 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
639 that runs on these, say Y here.
642 bool "SGI IP27 (Origin200/2000)"
646 select DEFAULT_SGI_PARTITION
648 select SYS_HAS_EARLY_PRINTK
650 select NR_CPUS_DEFAULT_64
651 select SYS_HAS_CPU_R10000
652 select SYS_SUPPORTS_64BIT_KERNEL
653 select SYS_SUPPORTS_BIG_ENDIAN
654 select SYS_SUPPORTS_NUMA
655 select SYS_SUPPORTS_SMP
656 select MIPS_L1_CACHE_SHIFT_7
658 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
659 workstations. To compile a Linux kernel that runs on these, say Y
663 bool "SGI IP28 (Indigo2 R10k)"
669 select DEFAULT_SGI_PARTITION
670 select DMA_NONCOHERENT
671 select GENERIC_ISA_DMA_SUPPORT_BROKEN
677 select SGI_HAS_INDYDOG
683 select SYS_HAS_CPU_R10000
685 # Disable EARLY_PRINTK for now since it leads to overwritten prom
686 # memory during early boot on some machines.
688 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
689 # for a more details discussion
691 # select SYS_HAS_EARLY_PRINTK
692 select SYS_SUPPORTS_64BIT_KERNEL
693 select SYS_SUPPORTS_BIG_ENDIAN
694 select MIPS_L1_CACHE_SHIFT_7
696 This is the SGI Indigo2 with R10000 processor. To compile a Linux
697 kernel that runs on these, say Y here.
706 select DMA_NONCOHERENT
709 select R5000_CPU_SCACHE
710 select RM7000_CPU_SCACHE
711 select SYS_HAS_CPU_R5000
712 select SYS_HAS_CPU_R10000 if BROKEN
713 select SYS_HAS_CPU_RM7000
714 select SYS_HAS_CPU_NEVADA
715 select SYS_SUPPORTS_64BIT_KERNEL
716 select SYS_SUPPORTS_BIG_ENDIAN
718 If you want this kernel to run on SGI O2 workstation, say Y here.
721 bool "Sibyte BCM91120C-CRhine"
724 select SIBYTE_BCM1120
726 select SYS_HAS_CPU_SB1
727 select SYS_SUPPORTS_BIG_ENDIAN
728 select SYS_SUPPORTS_LITTLE_ENDIAN
731 bool "Sibyte BCM91120x-Carmel"
734 select SIBYTE_BCM1120
736 select SYS_HAS_CPU_SB1
737 select SYS_SUPPORTS_BIG_ENDIAN
738 select SYS_SUPPORTS_LITTLE_ENDIAN
741 bool "Sibyte BCM91125C-CRhone"
744 select SIBYTE_BCM1125
746 select SYS_HAS_CPU_SB1
747 select SYS_SUPPORTS_BIG_ENDIAN
748 select SYS_SUPPORTS_HIGHMEM
749 select SYS_SUPPORTS_LITTLE_ENDIAN
752 bool "Sibyte BCM91125E-Rhone"
755 select SIBYTE_BCM1125H
757 select SYS_HAS_CPU_SB1
758 select SYS_SUPPORTS_BIG_ENDIAN
759 select SYS_SUPPORTS_LITTLE_ENDIAN
762 bool "Sibyte BCM91250A-SWARM"
765 select HAVE_PATA_PLATFORM
768 select SYS_HAS_CPU_SB1
769 select SYS_SUPPORTS_BIG_ENDIAN
770 select SYS_SUPPORTS_HIGHMEM
771 select SYS_SUPPORTS_LITTLE_ENDIAN
772 select ZONE_DMA32 if 64BIT
774 config SIBYTE_LITTLESUR
775 bool "Sibyte BCM91250C2-LittleSur"
778 select HAVE_PATA_PLATFORM
781 select SYS_HAS_CPU_SB1
782 select SYS_SUPPORTS_BIG_ENDIAN
783 select SYS_SUPPORTS_HIGHMEM
784 select SYS_SUPPORTS_LITTLE_ENDIAN
786 config SIBYTE_SENTOSA
787 bool "Sibyte BCM91250E-Sentosa"
792 select SYS_HAS_CPU_SB1
793 select SYS_SUPPORTS_BIG_ENDIAN
794 select SYS_SUPPORTS_LITTLE_ENDIAN
797 bool "Sibyte BCM91480B-BigSur"
800 select NR_CPUS_DEFAULT_4
801 select SIBYTE_BCM1x80
803 select SYS_HAS_CPU_SB1
804 select SYS_SUPPORTS_BIG_ENDIAN
805 select SYS_SUPPORTS_HIGHMEM
806 select SYS_SUPPORTS_LITTLE_ENDIAN
807 select ZONE_DMA32 if 64BIT
810 bool "SNI RM200/300/400"
811 select FW_ARC if CPU_LITTLE_ENDIAN
812 select FW_ARC32 if CPU_LITTLE_ENDIAN
813 select FW_SNIPROM if CPU_BIG_ENDIAN
814 select ARCH_MAY_HAVE_PC_FDC
818 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
819 select DMA_NONCOHERENT
820 select GENERIC_ISA_DMA
821 select HAVE_PCSPKR_PLATFORM
828 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
829 select SYS_HAS_CPU_R4X00
830 select SYS_HAS_CPU_R5000
831 select SYS_HAS_CPU_R10000
832 select R5000_CPU_SCACHE
833 select SYS_HAS_EARLY_PRINTK
834 select SYS_SUPPORTS_32BIT_KERNEL
835 select SYS_SUPPORTS_64BIT_KERNEL
836 select SYS_SUPPORTS_BIG_ENDIAN
837 select SYS_SUPPORTS_HIGHMEM
838 select SYS_SUPPORTS_LITTLE_ENDIAN
840 The SNI RM200/300/400 are MIPS-based machines manufactured by
841 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
842 Technology and now in turn merged with Fujitsu. Say Y here to
843 support this machine type.
846 bool "Toshiba TX39 series based machines"
849 bool "Toshiba TX49 series based machines"
851 config MIKROTIK_RB532
852 bool "Mikrotik RB532 boards"
855 select DMA_NONCOHERENT
858 select SYS_HAS_CPU_MIPS32_R1
859 select SYS_SUPPORTS_32BIT_KERNEL
860 select SYS_SUPPORTS_LITTLE_ENDIAN
864 select MIPS_L1_CACHE_SHIFT_4
866 Support the Mikrotik(tm) RouterBoard 532 series,
867 based on the IDT RC32434 SoC.
869 config CAVIUM_OCTEON_SOC
870 bool "Cavium Networks Octeon SoC based boards"
872 select ARCH_PHYS_ADDR_T_64BIT
874 select SYS_SUPPORTS_64BIT_KERNEL
875 select SYS_SUPPORTS_BIG_ENDIAN
877 select EDAC_ATOMIC_SCRUB
878 select SYS_SUPPORTS_LITTLE_ENDIAN
879 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
880 select SYS_HAS_EARLY_PRINTK
881 select SYS_HAS_CPU_CAVIUM_OCTEON
889 select ARCH_SPARSEMEM_ENABLE
890 select SYS_SUPPORTS_SMP
891 select NR_CPUS_DEFAULT_16
893 select MTD_COMPLEX_MAPPINGS
895 This option supports all of the Octeon reference boards from Cavium
896 Networks. It builds a kernel that dynamically determines the Octeon
897 CPU type and supports all known board reference implementations.
898 Some of the supported boards are:
905 Say Y here for most Octeon reference boards.
908 bool "Netlogic XLR/XLS based systems"
911 select SYS_HAS_CPU_XLR
912 select SYS_SUPPORTS_SMP
915 select SYS_SUPPORTS_32BIT_KERNEL
916 select SYS_SUPPORTS_64BIT_KERNEL
917 select ARCH_PHYS_ADDR_T_64BIT
918 select SYS_SUPPORTS_BIG_ENDIAN
919 select SYS_SUPPORTS_HIGHMEM
921 select NR_CPUS_DEFAULT_32
925 select ZONE_DMA32 if 64BIT
927 select SYS_HAS_EARLY_PRINTK
928 select SYS_SUPPORTS_ZBOOT
929 select SYS_SUPPORTS_ZBOOT_UART16550
931 Support for systems based on Netlogic XLR and XLS processors.
932 Say Y here if you have a XLR or XLS based board.
935 bool "Netlogic XLP based systems"
938 select SYS_HAS_CPU_XLP
939 select SYS_SUPPORTS_SMP
941 select SYS_SUPPORTS_32BIT_KERNEL
942 select SYS_SUPPORTS_64BIT_KERNEL
943 select ARCH_PHYS_ADDR_T_64BIT
945 select SYS_SUPPORTS_BIG_ENDIAN
946 select SYS_SUPPORTS_LITTLE_ENDIAN
947 select SYS_SUPPORTS_HIGHMEM
949 select NR_CPUS_DEFAULT_32
953 select ZONE_DMA32 if 64BIT
955 select SYS_HAS_EARLY_PRINTK
957 select SYS_SUPPORTS_ZBOOT
958 select SYS_SUPPORTS_ZBOOT_UART16550
960 This board is based on Netlogic XLP Processor.
961 Say Y here if you have a XLP based board.
964 bool "Para-Virtualized guest system"
968 select SYS_SUPPORTS_64BIT_KERNEL
969 select SYS_SUPPORTS_32BIT_KERNEL
970 select SYS_SUPPORTS_BIG_ENDIAN
971 select SYS_SUPPORTS_SMP
972 select NR_CPUS_DEFAULT_4
973 select SYS_HAS_EARLY_PRINTK
974 select SYS_HAS_CPU_MIPS32_R2
975 select SYS_HAS_CPU_MIPS64_R2
976 select SYS_HAS_CPU_CAVIUM_OCTEON
980 This option supports guest running under ????
984 source "arch/mips/alchemy/Kconfig"
985 source "arch/mips/ath25/Kconfig"
986 source "arch/mips/ath79/Kconfig"
987 source "arch/mips/bcm47xx/Kconfig"
988 source "arch/mips/bcm63xx/Kconfig"
989 source "arch/mips/bmips/Kconfig"
990 source "arch/mips/jazz/Kconfig"
991 source "arch/mips/jz4740/Kconfig"
992 source "arch/mips/lantiq/Kconfig"
993 source "arch/mips/lasat/Kconfig"
994 source "arch/mips/pic32/Kconfig"
995 source "arch/mips/pistachio/Kconfig"
996 source "arch/mips/pmcs-msp71xx/Kconfig"
997 source "arch/mips/ralink/Kconfig"
998 source "arch/mips/sgi-ip27/Kconfig"
999 source "arch/mips/sibyte/Kconfig"
1000 source "arch/mips/txx9/Kconfig"
1001 source "arch/mips/vr41xx/Kconfig"
1002 source "arch/mips/cavium-octeon/Kconfig"
1003 source "arch/mips/loongson32/Kconfig"
1004 source "arch/mips/loongson64/Kconfig"
1005 source "arch/mips/netlogic/Kconfig"
1006 source "arch/mips/paravirt/Kconfig"
1007 source "arch/mips/xilfpga/Kconfig"
1011 config RWSEM_GENERIC_SPINLOCK
1015 config RWSEM_XCHGADD_ALGORITHM
1018 config ARCH_HAS_ILOG2_U32
1022 config ARCH_HAS_ILOG2_U64
1026 config GENERIC_HWEIGHT
1030 config GENERIC_CALIBRATE_DELAY
1034 config SCHED_OMIT_FRAME_POINTER
1039 # Select some configuration options automatically based on user selections.
1044 config ARCH_MAY_HAVE_PC_FDC
1080 config MIPS_CLOCK_VSYSCALL
1081 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1090 config ARCH_DMA_ADDR_T_64BIT
1091 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1093 config ARCH_SUPPORTS_UPROBES
1096 config DMA_MAYBE_COHERENT
1097 select DMA_NONCOHERENT
1103 config DMA_NONCOHERENT
1105 select NEED_DMA_MAP_STATE
1107 config NEED_DMA_MAP_STATE
1110 config SYS_HAS_EARLY_PRINTK
1114 bool "Support for hot-pluggable CPUs"
1115 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1117 Say Y here to allow turning CPUs off and on. CPUs can be
1118 controlled through /sys/devices/system/cpu.
1119 (Note: power management support will enable this option
1120 automatically on SMP systems. )
1121 Say N if you want to disable CPU hotplug.
1123 config SYS_SUPPORTS_HOTPLUG_CPU
1126 config MIPS_BONITO64
1141 config NO_IOPORT_MAP
1147 config GENERIC_ISA_DMA
1149 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1152 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1154 select GENERIC_ISA_DMA
1159 config HOLES_IN_ZONE
1162 config SYS_SUPPORTS_RELOCATABLE
1165 Selected if the platform supports relocating the kernel.
1166 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1167 to allow access to command line and entropy sources.
1170 # Endianness selection. Sufficiently obscure so many users don't know what to
1171 # answer,so we try hard to limit the available choices. Also the use of a
1172 # choice statement should be more obvious to the user.
1175 prompt "Endianness selection"
1177 Some MIPS machines can be configured for either little or big endian
1178 byte order. These modes require different kernels and a different
1179 Linux distribution. In general there is one preferred byteorder for a
1180 particular system but some systems are just as commonly used in the
1181 one or the other endianness.
1183 config CPU_BIG_ENDIAN
1185 depends on SYS_SUPPORTS_BIG_ENDIAN
1187 config CPU_LITTLE_ENDIAN
1188 bool "Little endian"
1189 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1196 config SYS_SUPPORTS_APM_EMULATION
1199 config SYS_SUPPORTS_BIG_ENDIAN
1202 config SYS_SUPPORTS_LITTLE_ENDIAN
1205 config SYS_SUPPORTS_HUGETLBFS
1207 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1210 config MIPS_HUGE_TLB_SUPPORT
1211 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1228 config PCI_GT64XXX_PCI0
1231 config NO_EXCEPT_FILL
1238 select DMA_NONCOHERENT
1240 select SWAP_IO_SPACE
1241 select SYS_HAS_CPU_R5500
1242 select SYS_SUPPORTS_32BIT_KERNEL
1243 select SYS_SUPPORTS_64BIT_KERNEL
1244 select SYS_SUPPORTS_BIG_ENDIAN
1251 select DMA_NONCOHERENT
1252 select SYS_HAS_CPU_MIPS32_R2
1253 select SYS_SUPPORTS_32BIT_KERNEL
1254 select SYS_SUPPORTS_LITTLE_ENDIAN
1255 select SYS_SUPPORTS_BIG_ENDIAN
1256 select SYS_SUPPORTS_MIPS16
1257 select CPU_MIPSR2_IRQ_VI
1266 config SWAP_IO_SPACE
1269 config SGI_HAS_INDYDOG
1281 config SGI_HAS_ZILOG
1284 config SGI_HAS_I8042
1287 config DEFAULT_SGI_PARTITION
1299 config MIPS_L1_CACHE_SHIFT_4
1302 config MIPS_L1_CACHE_SHIFT_5
1305 config MIPS_L1_CACHE_SHIFT_6
1308 config MIPS_L1_CACHE_SHIFT_7
1311 config MIPS_L1_CACHE_SHIFT
1313 default "7" if MIPS_L1_CACHE_SHIFT_7
1314 default "6" if MIPS_L1_CACHE_SHIFT_6
1315 default "5" if MIPS_L1_CACHE_SHIFT_5
1316 default "4" if MIPS_L1_CACHE_SHIFT_4
1319 config HAVE_STD_PC_SERIAL_PORT
1323 bool "ARC console support"
1324 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1328 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1333 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1342 menu "CPU selection"
1348 config CPU_LOONGSON3
1349 bool "Loongson 3 CPU"
1350 depends on SYS_HAS_CPU_LOONGSON3
1351 select CPU_SUPPORTS_64BIT_KERNEL
1352 select CPU_SUPPORTS_HIGHMEM
1353 select CPU_SUPPORTS_HUGEPAGES
1354 select WEAK_ORDERING
1355 select WEAK_REORDERING_BEYOND_LLSC
1356 select MIPS_PGD_C0_CONTEXT
1359 The Loongson 3 processor implements the MIPS64R2 instruction
1360 set with many extensions.
1362 config LOONGSON3_ENHANCEMENT
1363 bool "New Loongson 3 CPU Enhancements"
1366 select CPU_HAS_PREFETCH
1367 depends on CPU_LOONGSON3
1369 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1370 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1371 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1372 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1373 Fast TLB refill support, etc.
1375 This option enable those enhancements which are not probed at run
1376 time. If you want a generic kernel to run on all Loongson 3 machines,
1377 please say 'N' here. If you want a high-performance kernel to run on
1378 new Loongson 3 machines only, please say 'Y' here.
1380 config CPU_LOONGSON2E
1382 depends on SYS_HAS_CPU_LOONGSON2E
1383 select CPU_LOONGSON2
1385 The Loongson 2E processor implements the MIPS III instruction set
1386 with many extensions.
1388 It has an internal FPGA northbridge, which is compatible to
1391 config CPU_LOONGSON2F
1393 depends on SYS_HAS_CPU_LOONGSON2F
1394 select CPU_LOONGSON2
1397 The Loongson 2F processor implements the MIPS III instruction set
1398 with many extensions.
1400 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1401 have a similar programming interface with FPGA northbridge used in
1404 config CPU_LOONGSON1B
1406 depends on SYS_HAS_CPU_LOONGSON1B
1407 select CPU_LOONGSON1
1408 select ARCH_WANT_OPTIONAL_GPIOLIB
1409 select LEDS_GPIO_REGISTER
1411 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1412 release 2 instruction set.
1414 config CPU_MIPS32_R1
1415 bool "MIPS32 Release 1"
1416 depends on SYS_HAS_CPU_MIPS32_R1
1417 select CPU_HAS_PREFETCH
1418 select CPU_SUPPORTS_32BIT_KERNEL
1419 select CPU_SUPPORTS_HIGHMEM
1421 Choose this option to build a kernel for release 1 or later of the
1422 MIPS32 architecture. Most modern embedded systems with a 32-bit
1423 MIPS processor are based on a MIPS32 processor. If you know the
1424 specific type of processor in your system, choose those that one
1425 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1426 Release 2 of the MIPS32 architecture is available since several
1427 years so chances are you even have a MIPS32 Release 2 processor
1428 in which case you should choose CPU_MIPS32_R2 instead for better
1431 config CPU_MIPS32_R2
1432 bool "MIPS32 Release 2"
1433 depends on SYS_HAS_CPU_MIPS32_R2
1434 select CPU_HAS_PREFETCH
1435 select CPU_SUPPORTS_32BIT_KERNEL
1436 select CPU_SUPPORTS_HIGHMEM
1437 select CPU_SUPPORTS_MSA
1440 Choose this option to build a kernel for release 2 or later of the
1441 MIPS32 architecture. Most modern embedded systems with a 32-bit
1442 MIPS processor are based on a MIPS32 processor. If you know the
1443 specific type of processor in your system, choose those that one
1444 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1446 config CPU_MIPS32_R6
1447 bool "MIPS32 Release 6"
1448 depends on SYS_HAS_CPU_MIPS32_R6
1449 select CPU_HAS_PREFETCH
1450 select CPU_SUPPORTS_32BIT_KERNEL
1451 select CPU_SUPPORTS_HIGHMEM
1452 select CPU_SUPPORTS_MSA
1455 select MIPS_O32_FP64_SUPPORT
1457 Choose this option to build a kernel for release 6 or later of the
1458 MIPS32 architecture. New MIPS processors, starting with the Warrior
1459 family, are based on a MIPS32r6 processor. If you own an older
1460 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1462 config CPU_MIPS64_R1
1463 bool "MIPS64 Release 1"
1464 depends on SYS_HAS_CPU_MIPS64_R1
1465 select CPU_HAS_PREFETCH
1466 select CPU_SUPPORTS_32BIT_KERNEL
1467 select CPU_SUPPORTS_64BIT_KERNEL
1468 select CPU_SUPPORTS_HIGHMEM
1469 select CPU_SUPPORTS_HUGEPAGES
1471 Choose this option to build a kernel for release 1 or later of the
1472 MIPS64 architecture. Many modern embedded systems with a 64-bit
1473 MIPS processor are based on a MIPS64 processor. If you know the
1474 specific type of processor in your system, choose those that one
1475 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1476 Release 2 of the MIPS64 architecture is available since several
1477 years so chances are you even have a MIPS64 Release 2 processor
1478 in which case you should choose CPU_MIPS64_R2 instead for better
1481 config CPU_MIPS64_R2
1482 bool "MIPS64 Release 2"
1483 depends on SYS_HAS_CPU_MIPS64_R2
1484 select CPU_HAS_PREFETCH
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_64BIT_KERNEL
1487 select CPU_SUPPORTS_HIGHMEM
1488 select CPU_SUPPORTS_HUGEPAGES
1489 select CPU_SUPPORTS_MSA
1491 Choose this option to build a kernel for release 2 or later of the
1492 MIPS64 architecture. Many modern embedded systems with a 64-bit
1493 MIPS processor are based on a MIPS64 processor. If you know the
1494 specific type of processor in your system, choose those that one
1495 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1497 config CPU_MIPS64_R6
1498 bool "MIPS64 Release 6"
1499 depends on SYS_HAS_CPU_MIPS64_R6
1500 select CPU_HAS_PREFETCH
1501 select CPU_SUPPORTS_32BIT_KERNEL
1502 select CPU_SUPPORTS_64BIT_KERNEL
1503 select CPU_SUPPORTS_HIGHMEM
1504 select CPU_SUPPORTS_MSA
1506 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1508 Choose this option to build a kernel for release 6 or later of the
1509 MIPS64 architecture. New MIPS processors, starting with the Warrior
1510 family, are based on a MIPS64r6 processor. If you own an older
1511 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1515 depends on SYS_HAS_CPU_R3000
1517 select CPU_SUPPORTS_32BIT_KERNEL
1518 select CPU_SUPPORTS_HIGHMEM
1520 Please make sure to pick the right CPU type. Linux/MIPS is not
1521 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1522 *not* work on R4000 machines and vice versa. However, since most
1523 of the supported machines have an R4000 (or similar) CPU, R4x00
1524 might be a safe bet. If the resulting kernel does not work,
1525 try to recompile with R3000.
1529 depends on SYS_HAS_CPU_TX39XX
1530 select CPU_SUPPORTS_32BIT_KERNEL
1534 depends on SYS_HAS_CPU_VR41XX
1535 select CPU_SUPPORTS_32BIT_KERNEL
1536 select CPU_SUPPORTS_64BIT_KERNEL
1538 The options selects support for the NEC VR4100 series of processors.
1539 Only choose this option if you have one of these processors as a
1540 kernel built with this option will not run on any other type of
1541 processor or vice versa.
1545 depends on SYS_HAS_CPU_R4300
1546 select CPU_SUPPORTS_32BIT_KERNEL
1547 select CPU_SUPPORTS_64BIT_KERNEL
1549 MIPS Technologies R4300-series processors.
1553 depends on SYS_HAS_CPU_R4X00
1554 select CPU_SUPPORTS_32BIT_KERNEL
1555 select CPU_SUPPORTS_64BIT_KERNEL
1556 select CPU_SUPPORTS_HUGEPAGES
1558 MIPS Technologies R4000-series processors other than 4300, including
1559 the R4000, R4400, R4600, and 4700.
1563 depends on SYS_HAS_CPU_TX49XX
1564 select CPU_HAS_PREFETCH
1565 select CPU_SUPPORTS_32BIT_KERNEL
1566 select CPU_SUPPORTS_64BIT_KERNEL
1567 select CPU_SUPPORTS_HUGEPAGES
1571 depends on SYS_HAS_CPU_R5000
1572 select CPU_SUPPORTS_32BIT_KERNEL
1573 select CPU_SUPPORTS_64BIT_KERNEL
1574 select CPU_SUPPORTS_HUGEPAGES
1576 MIPS Technologies R5000-series processors other than the Nevada.
1580 depends on SYS_HAS_CPU_R5432
1581 select CPU_SUPPORTS_32BIT_KERNEL
1582 select CPU_SUPPORTS_64BIT_KERNEL
1583 select CPU_SUPPORTS_HUGEPAGES
1587 depends on SYS_HAS_CPU_R5500
1588 select CPU_SUPPORTS_32BIT_KERNEL
1589 select CPU_SUPPORTS_64BIT_KERNEL
1590 select CPU_SUPPORTS_HUGEPAGES
1592 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1597 depends on SYS_HAS_CPU_R6000
1598 select CPU_SUPPORTS_32BIT_KERNEL
1600 MIPS Technologies R6000 and R6000A series processors. Note these
1601 processors are extremely rare and the support for them is incomplete.
1605 depends on SYS_HAS_CPU_NEVADA
1606 select CPU_SUPPORTS_32BIT_KERNEL
1607 select CPU_SUPPORTS_64BIT_KERNEL
1608 select CPU_SUPPORTS_HUGEPAGES
1610 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1614 depends on SYS_HAS_CPU_R8000
1615 select CPU_HAS_PREFETCH
1616 select CPU_SUPPORTS_64BIT_KERNEL
1618 MIPS Technologies R8000 processors. Note these processors are
1619 uncommon and the support for them is incomplete.
1623 depends on SYS_HAS_CPU_R10000
1624 select CPU_HAS_PREFETCH
1625 select CPU_SUPPORTS_32BIT_KERNEL
1626 select CPU_SUPPORTS_64BIT_KERNEL
1627 select CPU_SUPPORTS_HIGHMEM
1628 select CPU_SUPPORTS_HUGEPAGES
1630 MIPS Technologies R10000-series processors.
1634 depends on SYS_HAS_CPU_RM7000
1635 select CPU_HAS_PREFETCH
1636 select CPU_SUPPORTS_32BIT_KERNEL
1637 select CPU_SUPPORTS_64BIT_KERNEL
1638 select CPU_SUPPORTS_HIGHMEM
1639 select CPU_SUPPORTS_HUGEPAGES
1643 depends on SYS_HAS_CPU_SB1
1644 select CPU_SUPPORTS_32BIT_KERNEL
1645 select CPU_SUPPORTS_64BIT_KERNEL
1646 select CPU_SUPPORTS_HIGHMEM
1647 select CPU_SUPPORTS_HUGEPAGES
1648 select WEAK_ORDERING
1650 config CPU_CAVIUM_OCTEON
1651 bool "Cavium Octeon processor"
1652 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1653 select CPU_HAS_PREFETCH
1654 select CPU_SUPPORTS_64BIT_KERNEL
1655 select WEAK_ORDERING
1656 select CPU_SUPPORTS_HIGHMEM
1657 select CPU_SUPPORTS_HUGEPAGES
1658 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1659 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1660 select MIPS_L1_CACHE_SHIFT_7
1662 The Cavium Octeon processor is a highly integrated chip containing
1663 many ethernet hardware widgets for networking tasks. The processor
1664 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1665 Full details can be found at http://www.caviumnetworks.com.
1668 bool "Broadcom BMIPS"
1669 depends on SYS_HAS_CPU_BMIPS
1671 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1672 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1673 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1674 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1675 select CPU_SUPPORTS_32BIT_KERNEL
1676 select DMA_NONCOHERENT
1678 select SWAP_IO_SPACE
1679 select WEAK_ORDERING
1680 select CPU_SUPPORTS_HIGHMEM
1681 select CPU_HAS_PREFETCH
1683 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1686 bool "Netlogic XLR SoC"
1687 depends on SYS_HAS_CPU_XLR
1688 select CPU_SUPPORTS_32BIT_KERNEL
1689 select CPU_SUPPORTS_64BIT_KERNEL
1690 select CPU_SUPPORTS_HIGHMEM
1691 select CPU_SUPPORTS_HUGEPAGES
1692 select WEAK_ORDERING
1693 select WEAK_REORDERING_BEYOND_LLSC
1695 Netlogic Microsystems XLR/XLS processors.
1698 bool "Netlogic XLP SoC"
1699 depends on SYS_HAS_CPU_XLP
1700 select CPU_SUPPORTS_32BIT_KERNEL
1701 select CPU_SUPPORTS_64BIT_KERNEL
1702 select CPU_SUPPORTS_HIGHMEM
1703 select WEAK_ORDERING
1704 select WEAK_REORDERING_BEYOND_LLSC
1705 select CPU_HAS_PREFETCH
1707 select CPU_SUPPORTS_HUGEPAGES
1708 select MIPS_ASID_BITS_VARIABLE
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
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
1844 config SYS_HAS_CPU_LOONGSON3
1846 select CPU_SUPPORTS_CPUFREQ
1849 config SYS_HAS_CPU_LOONGSON2E
1852 config SYS_HAS_CPU_LOONGSON2F
1854 select CPU_SUPPORTS_CPUFREQ
1855 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1856 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1858 config SYS_HAS_CPU_LOONGSON1B
1861 config SYS_HAS_CPU_MIPS32_R1
1864 config SYS_HAS_CPU_MIPS32_R2
1867 config SYS_HAS_CPU_MIPS32_R3_5
1870 config SYS_HAS_CPU_MIPS32_R5
1873 config SYS_HAS_CPU_MIPS32_R6
1876 config SYS_HAS_CPU_MIPS64_R1
1879 config SYS_HAS_CPU_MIPS64_R2
1882 config SYS_HAS_CPU_MIPS64_R6
1885 config SYS_HAS_CPU_R3000
1888 config SYS_HAS_CPU_TX39XX
1891 config SYS_HAS_CPU_VR41XX
1894 config SYS_HAS_CPU_R4300
1897 config SYS_HAS_CPU_R4X00
1900 config SYS_HAS_CPU_TX49XX
1903 config SYS_HAS_CPU_R5000
1906 config SYS_HAS_CPU_R5432
1909 config SYS_HAS_CPU_R5500
1912 config SYS_HAS_CPU_R6000
1915 config SYS_HAS_CPU_NEVADA
1918 config SYS_HAS_CPU_R8000
1921 config SYS_HAS_CPU_R10000
1924 config SYS_HAS_CPU_RM7000
1927 config SYS_HAS_CPU_SB1
1930 config SYS_HAS_CPU_CAVIUM_OCTEON
1933 config SYS_HAS_CPU_BMIPS
1936 config SYS_HAS_CPU_BMIPS32_3300
1938 select SYS_HAS_CPU_BMIPS
1940 config SYS_HAS_CPU_BMIPS4350
1942 select SYS_HAS_CPU_BMIPS
1944 config SYS_HAS_CPU_BMIPS4380
1946 select SYS_HAS_CPU_BMIPS
1948 config SYS_HAS_CPU_BMIPS5000
1950 select SYS_HAS_CPU_BMIPS
1952 config SYS_HAS_CPU_XLR
1955 config SYS_HAS_CPU_XLP
1958 config MIPS_MALTA_PM
1959 depends on MIPS_MALTA
1965 # CPU may reorder R->R, R->W, W->R, W->W
1966 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1968 config WEAK_ORDERING
1972 # CPU may reorder reads and writes beyond LL/SC
1973 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1975 config WEAK_REORDERING_BEYOND_LLSC
1980 # These two indicate any level of the MIPS32 and MIPS64 architecture
1984 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1988 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1991 # These two indicate the revision of the architecture, either Release 1 or Release 2
1995 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1999 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2005 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2007 select HAVE_ARCH_BITREVERSE
2008 select MIPS_ASID_BITS_VARIABLE
2017 config SYS_SUPPORTS_32BIT_KERNEL
2019 config SYS_SUPPORTS_64BIT_KERNEL
2021 config CPU_SUPPORTS_32BIT_KERNEL
2023 config CPU_SUPPORTS_64BIT_KERNEL
2025 config CPU_SUPPORTS_CPUFREQ
2027 config CPU_SUPPORTS_ADDRWINCFG
2029 config CPU_SUPPORTS_HUGEPAGES
2031 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2033 config MIPS_PGD_C0_CONTEXT
2035 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2038 # Set to y for ptrace access to watch registers.
2040 config HARDWARE_WATCHPOINTS
2042 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2047 prompt "Kernel code model"
2049 You should only select this option if you have a workload that
2050 actually benefits from 64-bit processing or if your machine has
2051 large memory. You will only be presented a single option in this
2052 menu if your system does not support both 32-bit and 64-bit kernels.
2055 bool "32-bit kernel"
2056 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2059 Select this option if you want to build a 32-bit kernel.
2062 bool "64-bit kernel"
2063 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2065 Select this option if you want to build a 64-bit kernel.
2070 bool "KVM Guest Kernel"
2071 depends on BROKEN_ON_SMP
2073 Select this option if building a guest kernel for KVM (Trap & Emulate)
2076 config KVM_GUEST_TIMER_FREQ
2077 int "Count/Compare Timer Frequency (MHz)"
2078 depends on KVM_GUEST
2081 Set this to non-zero if building a guest kernel for KVM to skip RTC
2082 emulation when determining guest CPU Frequency. Instead, the guest's
2083 timer frequency is specified directly.
2085 config MIPS_VA_BITS_48
2086 bool "48 bits virtual memory"
2089 Support a maximum at least 48 bits of application virtual memory.
2090 Default is 40 bits or less, depending on the CPU.
2091 This option result in a small memory overhead for page tables.
2092 This option is only supported with 16k and 64k page sizes.
2096 prompt "Kernel page size"
2097 default PAGE_SIZE_4KB
2099 config PAGE_SIZE_4KB
2101 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2102 depends on !MIPS_VA_BITS_48
2104 This option select the standard 4kB Linux page size. On some
2105 R3000-family processors this is the only available page size. Using
2106 4kB page size will minimize memory consumption and is therefore
2107 recommended for low memory systems.
2109 config PAGE_SIZE_8KB
2111 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2112 depends on !MIPS_VA_BITS_48
2114 Using 8kB page size will result in higher performance kernel at
2115 the price of higher memory consumption. This option is available
2116 only on R8000 and cnMIPS processors. Note that you will need a
2117 suitable Linux distribution to support this.
2119 config PAGE_SIZE_16KB
2121 depends on !CPU_R3000 && !CPU_TX39XX
2123 Using 16kB page size will result in higher performance kernel at
2124 the price of higher memory consumption. This option is available on
2125 all non-R3000 family processors. Note that you will need a suitable
2126 Linux distribution to support this.
2128 config PAGE_SIZE_32KB
2130 depends on CPU_CAVIUM_OCTEON
2131 depends on !MIPS_VA_BITS_48
2133 Using 32kB page size will result in higher performance kernel at
2134 the price of higher memory consumption. This option is available
2135 only on cnMIPS cores. Note that you will need a suitable Linux
2136 distribution to support this.
2138 config PAGE_SIZE_64KB
2140 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2142 Using 64kB page size will result in higher performance kernel at
2143 the price of higher memory consumption. This option is available on
2144 all non-R3000 family processor. Not that at the time of this
2145 writing this option is still high experimental.
2149 config FORCE_MAX_ZONEORDER
2150 int "Maximum zone order"
2151 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2152 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2153 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2154 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2155 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2156 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2160 The kernel memory allocator divides physically contiguous memory
2161 blocks into "zones", where each zone is a power of two number of
2162 pages. This option selects the largest power of two that the kernel
2163 keeps in the memory allocator. If you need to allocate very large
2164 blocks of physically contiguous memory, then you may need to
2165 increase this value.
2167 This config option is actually maximum order plus one. For example,
2168 a value of 11 means that the largest free memory block is 2^10 pages.
2170 The page size is not necessarily 4KB. Keep this in mind
2171 when choosing a value for this option.
2176 config IP22_CPU_SCACHE
2181 # Support for a MIPS32 / MIPS64 style S-caches
2183 config MIPS_CPU_SCACHE
2187 config R5000_CPU_SCACHE
2191 config RM7000_CPU_SCACHE
2195 config SIBYTE_DMA_PAGEOPS
2196 bool "Use DMA to clear/copy pages"
2199 Instead of using the CPU to zero and copy pages, use a Data Mover
2200 channel. These DMA channels are otherwise unused by the standard
2201 SiByte Linux port. Seems to give a small performance benefit.
2203 config CPU_HAS_PREFETCH
2206 config CPU_GENERIC_DUMP_TLB
2208 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2212 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2214 config CPU_R4K_CACHE_TLB
2216 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2219 bool "MIPS MT SMP support (1 TC on each available VPE)"
2220 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2221 select CPU_MIPSR2_IRQ_VI
2222 select CPU_MIPSR2_IRQ_EI
2227 select SYS_SUPPORTS_SMP
2228 select SYS_SUPPORTS_SCHED_SMT
2229 select MIPS_PERF_SHARED_TC_COUNTERS
2231 This is a kernel model which is known as SMVP. This is supported
2232 on cores with the MT ASE and uses the available VPEs to implement
2233 virtual processors which supports SMP. This is equivalent to the
2234 Intel Hyperthreading feature. For further information go to
2235 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2241 bool "SMT (multithreading) scheduler support"
2242 depends on SYS_SUPPORTS_SCHED_SMT
2245 SMT scheduler support improves the CPU scheduler's decision making
2246 when dealing with MIPS MT enabled cores at a cost of slightly
2247 increased overhead in some places. If unsure say N here.
2249 config SYS_SUPPORTS_SCHED_SMT
2252 config SYS_SUPPORTS_MULTITHREADING
2255 config MIPS_MT_FPAFF
2256 bool "Dynamic FPU affinity for FP-intensive threads"
2258 depends on MIPS_MT_SMP
2260 config MIPSR2_TO_R6_EMULATOR
2261 bool "MIPS R2-to-R6 emulator"
2262 depends on CPU_MIPSR6 && !SMP
2265 Choose this option if you want to run non-R6 MIPS userland code.
2266 Even if you say 'Y' here, the emulator will still be disabled by
2267 default. You can enable it using the 'mipsr2emu' kernel option.
2268 The only reason this is a build-time option is to save ~14K from the
2270 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2271 depends on SMP && CPU_MIPSR6
2273 config MIPS_VPE_LOADER
2274 bool "VPE loader support."
2275 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2276 select CPU_MIPSR2_IRQ_VI
2277 select CPU_MIPSR2_IRQ_EI
2280 Includes a loader for loading an elf relocatable object
2281 onto another VPE and running it.
2283 config MIPS_VPE_LOADER_CMP
2286 depends on MIPS_VPE_LOADER && MIPS_CMP
2288 config MIPS_VPE_LOADER_MT
2291 depends on MIPS_VPE_LOADER && !MIPS_CMP
2293 config MIPS_VPE_LOADER_TOM
2294 bool "Load VPE program into memory hidden from linux"
2295 depends on MIPS_VPE_LOADER
2298 The loader can use memory that is present but has been hidden from
2299 Linux using the kernel command line option "mem=xxMB". It's up to
2300 you to ensure the amount you put in the option and the space your
2301 program requires is less or equal to the amount physically present.
2303 config MIPS_VPE_APSP_API
2304 bool "Enable support for AP/SP API (RTLX)"
2305 depends on MIPS_VPE_LOADER
2308 config MIPS_VPE_APSP_API_CMP
2311 depends on MIPS_VPE_APSP_API && MIPS_CMP
2313 config MIPS_VPE_APSP_API_MT
2316 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2319 bool "MIPS CMP framework support (DEPRECATED)"
2320 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2323 select SYS_SUPPORTS_SMP
2324 select WEAK_ORDERING
2327 Select this if you are using a bootloader which implements the "CMP
2328 framework" protocol (ie. YAMON) and want your kernel to make use of
2329 its ability to start secondary CPUs.
2331 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2335 bool "MIPS Coherent Processing System support"
2336 depends on SYS_SUPPORTS_MIPS_CPS
2339 select MIPS_CPS_PM if HOTPLUG_CPU
2341 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2342 select SYS_SUPPORTS_HOTPLUG_CPU
2343 select SYS_SUPPORTS_SMP
2344 select WEAK_ORDERING
2346 Select this if you wish to run an SMP kernel across multiple cores
2347 within a MIPS Coherent Processing System. When this option is
2348 enabled the kernel will probe for other cores and boot them with
2349 no external assistance. It is safe to enable this when hardware
2350 support is unavailable.
2363 config SB1_PASS_2_WORKAROUNDS
2365 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2368 config SB1_PASS_2_1_WORKAROUNDS
2370 depends on CPU_SB1 && CPU_SB1_PASS_2
2374 config ARCH_PHYS_ADDR_T_64BIT
2378 prompt "SmartMIPS or microMIPS ASE support"
2380 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2383 Select this if you want neither microMIPS nor SmartMIPS support
2385 config CPU_HAS_SMARTMIPS
2386 depends on SYS_SUPPORTS_SMARTMIPS
2389 SmartMIPS is a extension of the MIPS32 architecture aimed at
2390 increased security at both hardware and software level for
2391 smartcards. Enabling this option will allow proper use of the
2392 SmartMIPS instructions by Linux applications. However a kernel with
2393 this option will not work on a MIPS core without SmartMIPS core. If
2394 you don't know you probably don't have SmartMIPS and should say N
2397 config CPU_MICROMIPS
2398 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2401 When this option is enabled the kernel will be built using the
2407 bool "Support for the MIPS SIMD Architecture"
2408 depends on CPU_SUPPORTS_MSA
2409 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2411 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2412 and a set of SIMD instructions to operate on them. When this option
2413 is enabled the kernel will support allocating & switching MSA
2414 vector register contexts. If you know that your kernel will only be
2415 running on CPUs which do not support MSA or that your userland will
2416 not be making use of it then you may wish to say N here to reduce
2417 the size & complexity of your kernel.
2431 # Vectored interrupt mode is an R2 feature
2433 config CPU_MIPSR2_IRQ_VI
2437 # Extended interrupt mode is an R2 feature
2439 config CPU_MIPSR2_IRQ_EI
2444 depends on !CPU_R3000
2450 config CPU_DADDI_WORKAROUNDS
2453 config CPU_R4000_WORKAROUNDS
2455 select CPU_R4400_WORKAROUNDS
2457 config CPU_R4400_WORKAROUNDS
2460 config MIPS_ASID_SHIFT
2462 default 6 if CPU_R3000 || CPU_TX39XX
2463 default 4 if CPU_R8000
2466 config MIPS_ASID_BITS
2468 default 0 if MIPS_ASID_BITS_VARIABLE
2469 default 6 if CPU_R3000 || CPU_TX39XX
2472 config MIPS_ASID_BITS_VARIABLE
2476 # - Highmem only makes sense for the 32-bit kernel.
2477 # - The current highmem code will only work properly on physically indexed
2478 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2479 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2480 # moment we protect the user and offer the highmem option only on machines
2481 # where it's known to be safe. This will not offer highmem on a few systems
2482 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2483 # indexed CPUs but we're playing safe.
2484 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2485 # know they might have memory configurations that could make use of highmem
2489 bool "High Memory Support"
2490 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2492 config CPU_SUPPORTS_HIGHMEM
2495 config SYS_SUPPORTS_HIGHMEM
2498 config SYS_SUPPORTS_SMARTMIPS
2501 config SYS_SUPPORTS_MICROMIPS
2504 config SYS_SUPPORTS_MIPS16
2507 This option must be set if a kernel might be executed on a MIPS16-
2508 enabled CPU even if MIPS16 is not actually being used. In other
2509 words, it makes the kernel MIPS16-tolerant.
2511 config CPU_SUPPORTS_MSA
2514 config ARCH_FLATMEM_ENABLE
2516 depends on !NUMA && !CPU_LOONGSON2
2518 config ARCH_DISCONTIGMEM_ENABLE
2520 default y if SGI_IP27
2522 Say Y to support efficient handling of discontiguous physical memory,
2523 for architectures which are either NUMA (Non-Uniform Memory Access)
2524 or have huge holes in the physical address space for other reasons.
2525 See <file:Documentation/vm/numa> for more.
2527 config ARCH_SPARSEMEM_ENABLE
2529 select SPARSEMEM_STATIC
2533 depends on SYS_SUPPORTS_NUMA
2535 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2536 Access). This option improves performance on systems with more
2537 than two nodes; on two node systems it is generally better to
2538 leave it disabled; on single node systems disable this option
2541 config SYS_SUPPORTS_NUMA
2545 bool "Relocatable kernel"
2546 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2548 This builds a kernel image that retains relocation information
2549 so it can be loaded someplace besides the default 1MB.
2550 The relocations make the kernel binary about 15% larger,
2551 but are discarded at runtime
2553 config RELOCATION_TABLE_SIZE
2554 hex "Relocation table size"
2555 depends on RELOCATABLE
2556 range 0x0 0x01000000
2557 default "0x00100000"
2559 A table of relocation data will be appended to the kernel binary
2560 and parsed at boot to fix up the relocated kernel.
2562 This option allows the amount of space reserved for the table to be
2563 adjusted, although the default of 1Mb should be ok in most cases.
2565 The build will fail and a valid size suggested if this is too small.
2567 If unsure, leave at the default value.
2569 config RANDOMIZE_BASE
2570 bool "Randomize the address of the kernel image"
2571 depends on RELOCATABLE
2573 Randomizes the physical and virtual address at which the
2574 kernel image is loaded, as a security feature that
2575 deters exploit attempts relying on knowledge of the location
2576 of kernel internals.
2578 Entropy is generated using any coprocessor 0 registers available.
2580 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2584 config RANDOMIZE_BASE_MAX_OFFSET
2585 hex "Maximum kASLR offset" if EXPERT
2586 depends on RANDOMIZE_BASE
2587 range 0x0 0x40000000 if EVA || 64BIT
2588 range 0x0 0x08000000
2589 default "0x01000000"
2591 When kASLR is active, this provides the maximum offset that will
2592 be applied to the kernel image. It should be set according to the
2593 amount of physical RAM available in the target system minus
2594 PHYSICAL_START and must be a power of 2.
2596 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2597 EVA or 64-bit. The default is 16Mb.
2602 depends on NEED_MULTIPLE_NODES
2604 config HW_PERF_EVENTS
2605 bool "Enable hardware performance counter support for perf events"
2606 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2609 Enable hardware performance counter support for perf events. If
2610 disabled, perf events will use software events only.
2615 bool "Multi-Processing support"
2616 depends on SYS_SUPPORTS_SMP
2618 This enables support for systems with more than one CPU. If you have
2619 a system with only one CPU, say N. If you have a system with more
2620 than one CPU, say Y.
2622 If you say N here, the kernel will run on uni- and multiprocessor
2623 machines, but will use only one CPU of a multiprocessor machine. If
2624 you say Y here, the kernel will run on many, but not all,
2625 uniprocessor machines. On a uniprocessor machine, the kernel
2626 will run faster if you say N here.
2628 People using multiprocessor machines who say Y here should also say
2629 Y to "Enhanced Real Time Clock Support", below.
2631 See also the SMP-HOWTO available at
2632 <http://www.tldp.org/docs.html#howto>.
2634 If you don't know what to do here, say N.
2639 config SYS_SUPPORTS_MIPS_CMP
2642 config SYS_SUPPORTS_MIPS_CPS
2645 config SYS_SUPPORTS_SMP
2648 config NR_CPUS_DEFAULT_4
2651 config NR_CPUS_DEFAULT_8
2654 config NR_CPUS_DEFAULT_16
2657 config NR_CPUS_DEFAULT_32
2660 config NR_CPUS_DEFAULT_64
2664 int "Maximum number of CPUs (2-256)"
2667 default "4" if NR_CPUS_DEFAULT_4
2668 default "8" if NR_CPUS_DEFAULT_8
2669 default "16" if NR_CPUS_DEFAULT_16
2670 default "32" if NR_CPUS_DEFAULT_32
2671 default "64" if NR_CPUS_DEFAULT_64
2673 This allows you to specify the maximum number of CPUs which this
2674 kernel will support. The maximum supported value is 32 for 32-bit
2675 kernel and 64 for 64-bit kernels; the minimum value which makes
2676 sense is 1 for Qemu (useful only for kernel debugging purposes)
2677 and 2 for all others.
2679 This is purely to save memory - each supported CPU adds
2680 approximately eight kilobytes to the kernel image. For best
2681 performance should round up your number of processors to the next
2684 config MIPS_PERF_SHARED_TC_COUNTERS
2688 # Timer Interrupt Frequency Configuration
2692 prompt "Timer frequency"
2695 Allows the configuration of the timer frequency.
2698 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2701 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2704 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2707 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2710 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2713 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2716 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2719 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2723 config SYS_SUPPORTS_24HZ
2726 config SYS_SUPPORTS_48HZ
2729 config SYS_SUPPORTS_100HZ
2732 config SYS_SUPPORTS_128HZ
2735 config SYS_SUPPORTS_250HZ
2738 config SYS_SUPPORTS_256HZ
2741 config SYS_SUPPORTS_1000HZ
2744 config SYS_SUPPORTS_1024HZ
2747 config SYS_SUPPORTS_ARBIT_HZ
2749 default y if !SYS_SUPPORTS_24HZ && \
2750 !SYS_SUPPORTS_48HZ && \
2751 !SYS_SUPPORTS_100HZ && \
2752 !SYS_SUPPORTS_128HZ && \
2753 !SYS_SUPPORTS_250HZ && \
2754 !SYS_SUPPORTS_256HZ && \
2755 !SYS_SUPPORTS_1000HZ && \
2756 !SYS_SUPPORTS_1024HZ
2762 default 100 if HZ_100
2763 default 128 if HZ_128
2764 default 250 if HZ_250
2765 default 256 if HZ_256
2766 default 1000 if HZ_1000
2767 default 1024 if HZ_1024
2770 def_bool HIGH_RES_TIMERS
2772 source "kernel/Kconfig.preempt"
2775 bool "Kexec system call"
2778 kexec is a system call that implements the ability to shutdown your
2779 current kernel, and to start another kernel. It is like a reboot
2780 but it is independent of the system firmware. And like a reboot
2781 you can start any kernel with it, not just Linux.
2783 The name comes from the similarity to the exec system call.
2785 It is an ongoing process to be certain the hardware in a machine
2786 is properly shutdown, so do not be surprised if this code does not
2787 initially work for you. As of this writing the exact hardware
2788 interface is strongly in flux, so no good recommendation can be
2792 bool "Kernel crash dumps"
2794 Generate crash dump after being started by kexec.
2795 This should be normally only set in special crash dump kernels
2796 which are loaded in the main kernel with kexec-tools into
2797 a specially reserved region and then later executed after
2798 a crash by kdump/kexec. The crash dump kernel must be compiled
2799 to a memory address not used by the main kernel or firmware using
2802 config PHYSICAL_START
2803 hex "Physical address where the kernel is loaded"
2804 default "0xffffffff84000000" if 64BIT
2805 default "0x84000000" if 32BIT
2806 depends on CRASH_DUMP
2808 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2809 If you plan to use kernel for capturing the crash dump change
2810 this value to start of the reserved region (the "X" value as
2811 specified in the "crashkernel=YM@XM" command line boot parameter
2812 passed to the panic-ed kernel).
2815 bool "Enable seccomp to safely compute untrusted bytecode"
2819 This kernel feature is useful for number crunching applications
2820 that may need to compute untrusted bytecode during their
2821 execution. By using pipes or other transports made available to
2822 the process as file descriptors supporting the read/write
2823 syscalls, it's possible to isolate those applications in
2824 their own address space using seccomp. Once seccomp is
2825 enabled via /proc/<pid>/seccomp, it cannot be disabled
2826 and the task is only allowed to execute a few safe syscalls
2827 defined by each seccomp mode.
2829 If unsure, say Y. Only embedded should say N here.
2831 config MIPS_O32_FP64_SUPPORT
2832 bool "Support for O32 binaries using 64-bit FP"
2833 depends on 32BIT || MIPS32_O32
2835 When this is enabled, the kernel will support use of 64-bit floating
2836 point registers with binaries using the O32 ABI along with the
2837 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2838 32-bit MIPS systems this support is at the cost of increasing the
2839 size and complexity of the compiled FPU emulator. Thus if you are
2840 running a MIPS32 system and know that none of your userland binaries
2841 will require 64-bit floating point, you may wish to reduce the size
2842 of your kernel & potentially improve FP emulation performance by
2845 Although binutils currently supports use of this flag the details
2846 concerning its effect upon the O32 ABI in userland are still being
2847 worked on. In order to avoid userland becoming dependant upon current
2848 behaviour before the details have been finalised, this option should
2849 be considered experimental and only enabled by those working upon
2857 select OF_EARLY_FLATTREE
2864 prompt "Kernel appended dtb support" if USE_OF
2865 default MIPS_NO_APPENDED_DTB
2867 config MIPS_NO_APPENDED_DTB
2870 Do not enable appended dtb support.
2872 config MIPS_ELF_APPENDED_DTB
2875 With this option, the boot code will look for a device tree binary
2876 DTB) included in the vmlinux ELF section .appended_dtb. By default
2877 it is empty and the DTB can be appended using binutils command
2880 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2882 This is meant as a backward compatiblity convenience for those
2883 systems with a bootloader that can't be upgraded to accommodate
2884 the documented boot protocol using a device tree.
2886 config MIPS_RAW_APPENDED_DTB
2889 With this option, the boot code will look for a device tree binary
2890 DTB) appended to raw vmlinux.bin (without decompressor).
2891 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2893 This is meant as a backward compatibility convenience for those
2894 systems with a bootloader that can't be upgraded to accommodate
2895 the documented boot protocol using a device tree.
2897 Beware that there is very little in terms of protection against
2898 this option being confused by leftover garbage in memory that might
2899 look like a DTB header after a reboot if no actual DTB is appended
2900 to vmlinux.bin. Do not leave this option active in a production kernel
2901 if you don't intend to always append a DTB.
2903 config MIPS_ZBOOT_APPENDED_DTB
2905 depends on SYS_SUPPORTS_ZBOOT
2907 With this option, the boot code will look for a device tree binary
2908 DTB) appended to raw vmlinuz.bin (with decompressor).
2909 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2911 This is meant as a backward compatibility convenience for those
2912 systems with a bootloader that can't be upgraded to accommodate
2913 the documented boot protocol using a device tree.
2915 Beware that there is very little in terms of protection against
2916 this option being confused by leftover garbage in memory that might
2917 look like a DTB header after a reboot if no actual DTB is appended
2918 to vmlinuz.bin. Do not leave this option active in a production kernel
2919 if you don't intend to always append a DTB.
2923 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2924 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2925 !MIPS_MALTA && !MIPS_SEAD3 && \
2927 default MIPS_CMDLINE_FROM_BOOTLOADER
2929 config MIPS_CMDLINE_FROM_DTB
2931 bool "Dtb kernel arguments if available"
2933 config MIPS_CMDLINE_DTB_EXTEND
2935 bool "Extend dtb kernel arguments with bootloader arguments"
2937 config MIPS_CMDLINE_FROM_BOOTLOADER
2938 bool "Bootloader kernel arguments if available"
2940 config MIPS_CMDLINE_BUILTIN_EXTEND
2941 depends on CMDLINE_BOOL
2942 bool "Extend builtin kernel arguments with bootloader arguments"
2947 config LOCKDEP_SUPPORT
2951 config STACKTRACE_SUPPORT
2955 config HAVE_LATENCYTOP_SUPPORT
2959 config PGTABLE_LEVELS
2961 default 3 if 64BIT && !PAGE_SIZE_64KB
2964 source "init/Kconfig"
2966 source "kernel/Kconfig.freezer"
2968 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2976 bool "Support for PCI controller"
2977 depends on HW_HAS_PCI
2979 select NO_GENERIC_PCI_IOPORT_MAP
2981 Find out whether you have a PCI motherboard. PCI is the name of a
2982 bus system, i.e. the way the CPU talks to the other stuff inside
2983 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2987 bool "Support for HT-linked PCI"
2989 depends on CPU_LOONGSON3
2993 Loongson family machines use Hyper-Transport bus for inter-core
2994 connection and device connection. The PCI bus is a subordinate
2995 linked at HT. Choose Y for Loongson-3 based machines.
3000 source "drivers/pci/Kconfig"
3003 # ISA support is now enabled via select. Too many systems still have the one
3004 # or other ISA chip on the board that users don't know about so don't expect
3005 # users to choose the right thing ...
3012 depends on HW_HAS_EISA
3014 select GENERIC_ISA_DMA
3016 The Extended Industry Standard Architecture (EISA) bus was
3017 developed as an open alternative to the IBM MicroChannel bus.
3019 The EISA bus provided some of the features of the IBM MicroChannel
3020 bus while maintaining backward compatibility with cards made for
3021 the older ISA bus. The EISA bus saw limited use between 1988 and
3022 1995 when it was made obsolete by the PCI bus.
3024 Say Y here if you are building a kernel for an EISA-based machine.
3028 source "drivers/eisa/Kconfig"
3031 bool "TURBOchannel support"
3032 depends on MACH_DECSTATION
3034 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3035 processors. TURBOchannel programming specifications are available
3037 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3039 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3040 Linux driver support status is documented at:
3041 <http://www.linux-mips.org/wiki/DECstation>
3051 select MIPS_EXTERNAL_TIMER
3059 source "drivers/pcmcia/Kconfig"
3062 tristate "RapidIO support"
3066 If you say Y here, the kernel will include drivers and
3067 infrastructure code to support RapidIO interconnect devices.
3069 source "drivers/rapidio/Kconfig"
3073 menu "Executable file formats"
3075 source "fs/Kconfig.binfmt"
3080 config MIPS32_COMPAT
3086 config SYSVIPC_COMPAT
3090 bool "Kernel support for o32 binaries"
3092 select ARCH_WANT_OLD_COMPAT_IPC
3094 select MIPS32_COMPAT
3095 select SYSVIPC_COMPAT if SYSVIPC
3097 Select this option if you want to run o32 binaries. These are pure
3098 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3099 existing binaries are in this format.
3104 bool "Kernel support for n32 binaries"
3107 select MIPS32_COMPAT
3108 select SYSVIPC_COMPAT if SYSVIPC
3110 Select this option if you want to run n32 binaries. These are
3111 64-bit binaries using 32-bit quantities for addressing and certain
3112 data that would normally be 64-bit. They are used in special
3119 default y if MIPS32_O32 || MIPS32_N32
3124 menu "Power management options"
3126 config ARCH_HIBERNATION_POSSIBLE
3128 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3130 config ARCH_SUSPEND_POSSIBLE
3132 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3134 source "kernel/power/Kconfig"
3138 config MIPS_EXTERNAL_TIMER
3141 menu "CPU Power Management"
3143 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3144 source "drivers/cpufreq/Kconfig"
3147 source "drivers/cpuidle/Kconfig"
3151 source "net/Kconfig"
3153 source "drivers/Kconfig"
3155 source "drivers/firmware/Kconfig"
3159 source "arch/mips/Kconfig.debug"
3161 source "security/Kconfig"
3163 source "crypto/Kconfig"
3165 source "lib/Kconfig"
3167 source "arch/mips/kvm/Kconfig"