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 CPU_LOONGSON2E
1365 depends on SYS_HAS_CPU_LOONGSON2E
1366 select CPU_LOONGSON2
1368 The Loongson 2E processor implements the MIPS III instruction set
1369 with many extensions.
1371 It has an internal FPGA northbridge, which is compatible to
1374 config CPU_LOONGSON2F
1376 depends on SYS_HAS_CPU_LOONGSON2F
1377 select CPU_LOONGSON2
1378 select ARCH_REQUIRE_GPIOLIB
1380 The Loongson 2F processor implements the MIPS III instruction set
1381 with many extensions.
1383 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1384 have a similar programming interface with FPGA northbridge used in
1387 config CPU_LOONGSON1B
1389 depends on SYS_HAS_CPU_LOONGSON1B
1390 select CPU_LOONGSON1
1391 select ARCH_WANT_OPTIONAL_GPIOLIB
1392 select LEDS_GPIO_REGISTER
1394 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1395 release 2 instruction set.
1397 config CPU_MIPS32_R1
1398 bool "MIPS32 Release 1"
1399 depends on SYS_HAS_CPU_MIPS32_R1
1400 select CPU_HAS_PREFETCH
1401 select CPU_SUPPORTS_32BIT_KERNEL
1402 select CPU_SUPPORTS_HIGHMEM
1404 Choose this option to build a kernel for release 1 or later of the
1405 MIPS32 architecture. Most modern embedded systems with a 32-bit
1406 MIPS processor are based on a MIPS32 processor. If you know the
1407 specific type of processor in your system, choose those that one
1408 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1409 Release 2 of the MIPS32 architecture is available since several
1410 years so chances are you even have a MIPS32 Release 2 processor
1411 in which case you should choose CPU_MIPS32_R2 instead for better
1414 config CPU_MIPS32_R2
1415 bool "MIPS32 Release 2"
1416 depends on SYS_HAS_CPU_MIPS32_R2
1417 select CPU_HAS_PREFETCH
1418 select CPU_SUPPORTS_32BIT_KERNEL
1419 select CPU_SUPPORTS_HIGHMEM
1420 select CPU_SUPPORTS_MSA
1423 Choose this option to build a kernel for release 2 or later of the
1424 MIPS32 architecture. Most modern embedded systems with a 32-bit
1425 MIPS processor are based on a MIPS32 processor. If you know the
1426 specific type of processor in your system, choose those that one
1427 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1429 config CPU_MIPS32_R6
1430 bool "MIPS32 Release 6"
1431 depends on SYS_HAS_CPU_MIPS32_R6
1432 select CPU_HAS_PREFETCH
1433 select CPU_SUPPORTS_32BIT_KERNEL
1434 select CPU_SUPPORTS_HIGHMEM
1435 select CPU_SUPPORTS_MSA
1438 select MIPS_O32_FP64_SUPPORT
1440 Choose this option to build a kernel for release 6 or later of the
1441 MIPS32 architecture. New MIPS processors, starting with the Warrior
1442 family, are based on a MIPS32r6 processor. If you own an older
1443 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1445 config CPU_MIPS64_R1
1446 bool "MIPS64 Release 1"
1447 depends on SYS_HAS_CPU_MIPS64_R1
1448 select CPU_HAS_PREFETCH
1449 select CPU_SUPPORTS_32BIT_KERNEL
1450 select CPU_SUPPORTS_64BIT_KERNEL
1451 select CPU_SUPPORTS_HIGHMEM
1452 select CPU_SUPPORTS_HUGEPAGES
1454 Choose this option to build a kernel for release 1 or later of the
1455 MIPS64 architecture. Many modern embedded systems with a 64-bit
1456 MIPS processor are based on a MIPS64 processor. If you know the
1457 specific type of processor in your system, choose those that one
1458 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1459 Release 2 of the MIPS64 architecture is available since several
1460 years so chances are you even have a MIPS64 Release 2 processor
1461 in which case you should choose CPU_MIPS64_R2 instead for better
1464 config CPU_MIPS64_R2
1465 bool "MIPS64 Release 2"
1466 depends on SYS_HAS_CPU_MIPS64_R2
1467 select CPU_HAS_PREFETCH
1468 select CPU_SUPPORTS_32BIT_KERNEL
1469 select CPU_SUPPORTS_64BIT_KERNEL
1470 select CPU_SUPPORTS_HIGHMEM
1471 select CPU_SUPPORTS_HUGEPAGES
1472 select CPU_SUPPORTS_MSA
1474 Choose this option to build a kernel for release 2 or later of the
1475 MIPS64 architecture. Many modern embedded systems with a 64-bit
1476 MIPS processor are based on a MIPS64 processor. If you know the
1477 specific type of processor in your system, choose those that one
1478 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1480 config CPU_MIPS64_R6
1481 bool "MIPS64 Release 6"
1482 depends on SYS_HAS_CPU_MIPS64_R6
1483 select CPU_HAS_PREFETCH
1484 select CPU_SUPPORTS_32BIT_KERNEL
1485 select CPU_SUPPORTS_64BIT_KERNEL
1486 select CPU_SUPPORTS_HIGHMEM
1487 select CPU_SUPPORTS_MSA
1489 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1491 Choose this option to build a kernel for release 6 or later of the
1492 MIPS64 architecture. New MIPS processors, starting with the Warrior
1493 family, are based on a MIPS64r6 processor. If you own an older
1494 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1498 depends on SYS_HAS_CPU_R3000
1500 select CPU_SUPPORTS_32BIT_KERNEL
1501 select CPU_SUPPORTS_HIGHMEM
1503 Please make sure to pick the right CPU type. Linux/MIPS is not
1504 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1505 *not* work on R4000 machines and vice versa. However, since most
1506 of the supported machines have an R4000 (or similar) CPU, R4x00
1507 might be a safe bet. If the resulting kernel does not work,
1508 try to recompile with R3000.
1512 depends on SYS_HAS_CPU_TX39XX
1513 select CPU_SUPPORTS_32BIT_KERNEL
1517 depends on SYS_HAS_CPU_VR41XX
1518 select CPU_SUPPORTS_32BIT_KERNEL
1519 select CPU_SUPPORTS_64BIT_KERNEL
1521 The options selects support for the NEC VR4100 series of processors.
1522 Only choose this option if you have one of these processors as a
1523 kernel built with this option will not run on any other type of
1524 processor or vice versa.
1528 depends on SYS_HAS_CPU_R4300
1529 select CPU_SUPPORTS_32BIT_KERNEL
1530 select CPU_SUPPORTS_64BIT_KERNEL
1532 MIPS Technologies R4300-series processors.
1536 depends on SYS_HAS_CPU_R4X00
1537 select CPU_SUPPORTS_32BIT_KERNEL
1538 select CPU_SUPPORTS_64BIT_KERNEL
1539 select CPU_SUPPORTS_HUGEPAGES
1541 MIPS Technologies R4000-series processors other than 4300, including
1542 the R4000, R4400, R4600, and 4700.
1546 depends on SYS_HAS_CPU_TX49XX
1547 select CPU_HAS_PREFETCH
1548 select CPU_SUPPORTS_32BIT_KERNEL
1549 select CPU_SUPPORTS_64BIT_KERNEL
1550 select CPU_SUPPORTS_HUGEPAGES
1554 depends on SYS_HAS_CPU_R5000
1555 select CPU_SUPPORTS_32BIT_KERNEL
1556 select CPU_SUPPORTS_64BIT_KERNEL
1557 select CPU_SUPPORTS_HUGEPAGES
1559 MIPS Technologies R5000-series processors other than the Nevada.
1563 depends on SYS_HAS_CPU_R5432
1564 select CPU_SUPPORTS_32BIT_KERNEL
1565 select CPU_SUPPORTS_64BIT_KERNEL
1566 select CPU_SUPPORTS_HUGEPAGES
1570 depends on SYS_HAS_CPU_R5500
1571 select CPU_SUPPORTS_32BIT_KERNEL
1572 select CPU_SUPPORTS_64BIT_KERNEL
1573 select CPU_SUPPORTS_HUGEPAGES
1575 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1580 depends on SYS_HAS_CPU_R6000
1581 select CPU_SUPPORTS_32BIT_KERNEL
1583 MIPS Technologies R6000 and R6000A series processors. Note these
1584 processors are extremely rare and the support for them is incomplete.
1588 depends on SYS_HAS_CPU_NEVADA
1589 select CPU_SUPPORTS_32BIT_KERNEL
1590 select CPU_SUPPORTS_64BIT_KERNEL
1591 select CPU_SUPPORTS_HUGEPAGES
1593 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1597 depends on SYS_HAS_CPU_R8000
1598 select CPU_HAS_PREFETCH
1599 select CPU_SUPPORTS_64BIT_KERNEL
1601 MIPS Technologies R8000 processors. Note these processors are
1602 uncommon and the support for them is incomplete.
1606 depends on SYS_HAS_CPU_R10000
1607 select CPU_HAS_PREFETCH
1608 select CPU_SUPPORTS_32BIT_KERNEL
1609 select CPU_SUPPORTS_64BIT_KERNEL
1610 select CPU_SUPPORTS_HIGHMEM
1611 select CPU_SUPPORTS_HUGEPAGES
1613 MIPS Technologies R10000-series processors.
1617 depends on SYS_HAS_CPU_RM7000
1618 select CPU_HAS_PREFETCH
1619 select CPU_SUPPORTS_32BIT_KERNEL
1620 select CPU_SUPPORTS_64BIT_KERNEL
1621 select CPU_SUPPORTS_HIGHMEM
1622 select CPU_SUPPORTS_HUGEPAGES
1626 depends on SYS_HAS_CPU_SB1
1627 select CPU_SUPPORTS_32BIT_KERNEL
1628 select CPU_SUPPORTS_64BIT_KERNEL
1629 select CPU_SUPPORTS_HIGHMEM
1630 select CPU_SUPPORTS_HUGEPAGES
1631 select WEAK_ORDERING
1633 config CPU_CAVIUM_OCTEON
1634 bool "Cavium Octeon processor"
1635 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1636 select CPU_HAS_PREFETCH
1637 select CPU_SUPPORTS_64BIT_KERNEL
1638 select WEAK_ORDERING
1639 select CPU_SUPPORTS_HIGHMEM
1640 select CPU_SUPPORTS_HUGEPAGES
1641 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1642 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1643 select MIPS_L1_CACHE_SHIFT_7
1645 The Cavium Octeon processor is a highly integrated chip containing
1646 many ethernet hardware widgets for networking tasks. The processor
1647 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1648 Full details can be found at http://www.caviumnetworks.com.
1651 bool "Broadcom BMIPS"
1652 depends on SYS_HAS_CPU_BMIPS
1654 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1655 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1656 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1657 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1658 select CPU_SUPPORTS_32BIT_KERNEL
1659 select DMA_NONCOHERENT
1661 select SWAP_IO_SPACE
1662 select WEAK_ORDERING
1663 select CPU_SUPPORTS_HIGHMEM
1664 select CPU_HAS_PREFETCH
1666 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1669 bool "Netlogic XLR SoC"
1670 depends on SYS_HAS_CPU_XLR
1671 select CPU_SUPPORTS_32BIT_KERNEL
1672 select CPU_SUPPORTS_64BIT_KERNEL
1673 select CPU_SUPPORTS_HIGHMEM
1674 select CPU_SUPPORTS_HUGEPAGES
1675 select WEAK_ORDERING
1676 select WEAK_REORDERING_BEYOND_LLSC
1678 Netlogic Microsystems XLR/XLS processors.
1681 bool "Netlogic XLP SoC"
1682 depends on SYS_HAS_CPU_XLP
1683 select CPU_SUPPORTS_32BIT_KERNEL
1684 select CPU_SUPPORTS_64BIT_KERNEL
1685 select CPU_SUPPORTS_HIGHMEM
1686 select WEAK_ORDERING
1687 select WEAK_REORDERING_BEYOND_LLSC
1688 select CPU_HAS_PREFETCH
1690 select CPU_SUPPORTS_HUGEPAGES
1692 Netlogic Microsystems XLP processors.
1695 config CPU_MIPS32_3_5_FEATURES
1696 bool "MIPS32 Release 3.5 Features"
1697 depends on SYS_HAS_CPU_MIPS32_R3_5
1698 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1700 Choose this option to build a kernel for release 2 or later of the
1701 MIPS32 architecture including features from the 3.5 release such as
1702 support for Enhanced Virtual Addressing (EVA).
1704 config CPU_MIPS32_3_5_EVA
1705 bool "Enhanced Virtual Addressing (EVA)"
1706 depends on CPU_MIPS32_3_5_FEATURES
1710 Choose this option if you want to enable the Enhanced Virtual
1711 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1712 One of its primary benefits is an increase in the maximum size
1713 of lowmem (up to 3GB). If unsure, say 'N' here.
1715 config CPU_MIPS32_R5_FEATURES
1716 bool "MIPS32 Release 5 Features"
1717 depends on SYS_HAS_CPU_MIPS32_R5
1718 depends on CPU_MIPS32_R2
1720 Choose this option to build a kernel for release 2 or later of the
1721 MIPS32 architecture including features from release 5 such as
1722 support for Extended Physical Addressing (XPA).
1724 config CPU_MIPS32_R5_XPA
1725 bool "Extended Physical Addressing (XPA)"
1726 depends on CPU_MIPS32_R5_FEATURES
1728 depends on !PAGE_SIZE_4KB
1729 depends on SYS_SUPPORTS_HIGHMEM
1732 select ARCH_PHYS_ADDR_T_64BIT
1735 Choose this option if you want to enable the Extended Physical
1736 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1737 benefit is to increase physical addressing equal to or greater
1738 than 40 bits. Note that this has the side effect of turning on
1739 64-bit addressing which in turn makes the PTEs 64-bit in size.
1740 If unsure, say 'N' here.
1743 config CPU_NOP_WORKAROUNDS
1746 config CPU_JUMP_WORKAROUNDS
1749 config CPU_LOONGSON2F_WORKAROUNDS
1750 bool "Loongson 2F Workarounds"
1752 select CPU_NOP_WORKAROUNDS
1753 select CPU_JUMP_WORKAROUNDS
1755 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1756 require workarounds. Without workarounds the system may hang
1757 unexpectedly. For more information please refer to the gas
1758 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1760 Loongson 2F03 and later have fixed these issues and no workarounds
1761 are needed. The workarounds have no significant side effect on them
1762 but may decrease the performance of the system so this option should
1763 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1766 If unsure, please say Y.
1767 endif # CPU_LOONGSON2F
1769 config SYS_SUPPORTS_ZBOOT
1771 select HAVE_KERNEL_GZIP
1772 select HAVE_KERNEL_BZIP2
1773 select HAVE_KERNEL_LZ4
1774 select HAVE_KERNEL_LZMA
1775 select HAVE_KERNEL_LZO
1776 select HAVE_KERNEL_XZ
1778 config SYS_SUPPORTS_ZBOOT_UART16550
1780 select SYS_SUPPORTS_ZBOOT
1782 config SYS_SUPPORTS_ZBOOT_UART_PROM
1784 select SYS_SUPPORTS_ZBOOT
1786 config CPU_LOONGSON2
1788 select CPU_SUPPORTS_32BIT_KERNEL
1789 select CPU_SUPPORTS_64BIT_KERNEL
1790 select CPU_SUPPORTS_HIGHMEM
1791 select CPU_SUPPORTS_HUGEPAGES
1793 config CPU_LOONGSON1
1797 select CPU_HAS_PREFETCH
1798 select CPU_SUPPORTS_32BIT_KERNEL
1799 select CPU_SUPPORTS_HIGHMEM
1800 select CPU_SUPPORTS_CPUFREQ
1802 config CPU_BMIPS32_3300
1803 select SMP_UP if SMP
1806 config CPU_BMIPS4350
1808 select SYS_SUPPORTS_SMP
1809 select SYS_SUPPORTS_HOTPLUG_CPU
1811 config CPU_BMIPS4380
1813 select MIPS_L1_CACHE_SHIFT_6
1814 select SYS_SUPPORTS_SMP
1815 select SYS_SUPPORTS_HOTPLUG_CPU
1817 config CPU_BMIPS5000
1819 select MIPS_CPU_SCACHE
1820 select MIPS_L1_CACHE_SHIFT_7
1821 select SYS_SUPPORTS_SMP
1822 select SYS_SUPPORTS_HOTPLUG_CPU
1824 config SYS_HAS_CPU_LOONGSON3
1826 select CPU_SUPPORTS_CPUFREQ
1829 config SYS_HAS_CPU_LOONGSON2E
1832 config SYS_HAS_CPU_LOONGSON2F
1834 select CPU_SUPPORTS_CPUFREQ
1835 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1836 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1838 config SYS_HAS_CPU_LOONGSON1B
1841 config SYS_HAS_CPU_MIPS32_R1
1844 config SYS_HAS_CPU_MIPS32_R2
1847 config SYS_HAS_CPU_MIPS32_R3_5
1850 config SYS_HAS_CPU_MIPS32_R5
1853 config SYS_HAS_CPU_MIPS32_R6
1856 config SYS_HAS_CPU_MIPS64_R1
1859 config SYS_HAS_CPU_MIPS64_R2
1862 config SYS_HAS_CPU_MIPS64_R6
1865 config SYS_HAS_CPU_R3000
1868 config SYS_HAS_CPU_TX39XX
1871 config SYS_HAS_CPU_VR41XX
1874 config SYS_HAS_CPU_R4300
1877 config SYS_HAS_CPU_R4X00
1880 config SYS_HAS_CPU_TX49XX
1883 config SYS_HAS_CPU_R5000
1886 config SYS_HAS_CPU_R5432
1889 config SYS_HAS_CPU_R5500
1892 config SYS_HAS_CPU_R6000
1895 config SYS_HAS_CPU_NEVADA
1898 config SYS_HAS_CPU_R8000
1901 config SYS_HAS_CPU_R10000
1904 config SYS_HAS_CPU_RM7000
1907 config SYS_HAS_CPU_SB1
1910 config SYS_HAS_CPU_CAVIUM_OCTEON
1913 config SYS_HAS_CPU_BMIPS
1916 config SYS_HAS_CPU_BMIPS32_3300
1918 select SYS_HAS_CPU_BMIPS
1920 config SYS_HAS_CPU_BMIPS4350
1922 select SYS_HAS_CPU_BMIPS
1924 config SYS_HAS_CPU_BMIPS4380
1926 select SYS_HAS_CPU_BMIPS
1928 config SYS_HAS_CPU_BMIPS5000
1930 select SYS_HAS_CPU_BMIPS
1932 config SYS_HAS_CPU_XLR
1935 config SYS_HAS_CPU_XLP
1938 config MIPS_MALTA_PM
1939 depends on MIPS_MALTA
1945 # CPU may reorder R->R, R->W, W->R, W->W
1946 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1948 config WEAK_ORDERING
1952 # CPU may reorder reads and writes beyond LL/SC
1953 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1955 config WEAK_REORDERING_BEYOND_LLSC
1960 # These two indicate any level of the MIPS32 and MIPS64 architecture
1964 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1968 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1971 # These two indicate the revision of the architecture, either Release 1 or Release 2
1975 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1979 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1984 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1993 config SYS_SUPPORTS_32BIT_KERNEL
1995 config SYS_SUPPORTS_64BIT_KERNEL
1997 config CPU_SUPPORTS_32BIT_KERNEL
1999 config CPU_SUPPORTS_64BIT_KERNEL
2001 config CPU_SUPPORTS_CPUFREQ
2003 config CPU_SUPPORTS_ADDRWINCFG
2005 config CPU_SUPPORTS_HUGEPAGES
2007 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2009 config MIPS_PGD_C0_CONTEXT
2011 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2014 # Set to y for ptrace access to watch registers.
2016 config HARDWARE_WATCHPOINTS
2018 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2023 prompt "Kernel code model"
2025 You should only select this option if you have a workload that
2026 actually benefits from 64-bit processing or if your machine has
2027 large memory. You will only be presented a single option in this
2028 menu if your system does not support both 32-bit and 64-bit kernels.
2031 bool "32-bit kernel"
2032 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2035 Select this option if you want to build a 32-bit kernel.
2038 bool "64-bit kernel"
2039 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2041 Select this option if you want to build a 64-bit kernel.
2046 bool "KVM Guest Kernel"
2047 depends on BROKEN_ON_SMP
2049 Select this option if building a guest kernel for KVM (Trap & Emulate)
2052 config KVM_GUEST_TIMER_FREQ
2053 int "Count/Compare Timer Frequency (MHz)"
2054 depends on KVM_GUEST
2057 Set this to non-zero if building a guest kernel for KVM to skip RTC
2058 emulation when determining guest CPU Frequency. Instead, the guest's
2059 timer frequency is specified directly.
2062 prompt "Kernel page size"
2063 default PAGE_SIZE_4KB
2065 config PAGE_SIZE_4KB
2067 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2069 This option select the standard 4kB Linux page size. On some
2070 R3000-family processors this is the only available page size. Using
2071 4kB page size will minimize memory consumption and is therefore
2072 recommended for low memory systems.
2074 config PAGE_SIZE_8KB
2076 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2078 Using 8kB page size will result in higher performance kernel at
2079 the price of higher memory consumption. This option is available
2080 only on R8000 and cnMIPS processors. Note that you will need a
2081 suitable Linux distribution to support this.
2083 config PAGE_SIZE_16KB
2085 depends on !CPU_R3000 && !CPU_TX39XX
2087 Using 16kB page size will result in higher performance kernel at
2088 the price of higher memory consumption. This option is available on
2089 all non-R3000 family processors. Note that you will need a suitable
2090 Linux distribution to support this.
2092 config PAGE_SIZE_32KB
2094 depends on CPU_CAVIUM_OCTEON
2096 Using 32kB page size will result in higher performance kernel at
2097 the price of higher memory consumption. This option is available
2098 only on cnMIPS cores. Note that you will need a suitable Linux
2099 distribution to support this.
2101 config PAGE_SIZE_64KB
2103 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2105 Using 64kB page size will result in higher performance kernel at
2106 the price of higher memory consumption. This option is available on
2107 all non-R3000 family processor. Not that at the time of this
2108 writing this option is still high experimental.
2112 config FORCE_MAX_ZONEORDER
2113 int "Maximum zone order"
2114 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2115 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2116 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2117 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2118 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2119 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2123 The kernel memory allocator divides physically contiguous memory
2124 blocks into "zones", where each zone is a power of two number of
2125 pages. This option selects the largest power of two that the kernel
2126 keeps in the memory allocator. If you need to allocate very large
2127 blocks of physically contiguous memory, then you may need to
2128 increase this value.
2130 This config option is actually maximum order plus one. For example,
2131 a value of 11 means that the largest free memory block is 2^10 pages.
2133 The page size is not necessarily 4KB. Keep this in mind
2134 when choosing a value for this option.
2139 config IP22_CPU_SCACHE
2144 # Support for a MIPS32 / MIPS64 style S-caches
2146 config MIPS_CPU_SCACHE
2150 config R5000_CPU_SCACHE
2154 config RM7000_CPU_SCACHE
2158 config SIBYTE_DMA_PAGEOPS
2159 bool "Use DMA to clear/copy pages"
2162 Instead of using the CPU to zero and copy pages, use a Data Mover
2163 channel. These DMA channels are otherwise unused by the standard
2164 SiByte Linux port. Seems to give a small performance benefit.
2166 config CPU_HAS_PREFETCH
2169 config CPU_GENERIC_DUMP_TLB
2171 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2175 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2177 config CPU_R4K_CACHE_TLB
2179 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2182 bool "MIPS MT SMP support (1 TC on each available VPE)"
2183 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2184 select CPU_MIPSR2_IRQ_VI
2185 select CPU_MIPSR2_IRQ_EI
2190 select SYS_SUPPORTS_SMP
2191 select SYS_SUPPORTS_SCHED_SMT
2192 select MIPS_PERF_SHARED_TC_COUNTERS
2194 This is a kernel model which is known as SMVP. This is supported
2195 on cores with the MT ASE and uses the available VPEs to implement
2196 virtual processors which supports SMP. This is equivalent to the
2197 Intel Hyperthreading feature. For further information go to
2198 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2204 bool "SMT (multithreading) scheduler support"
2205 depends on SYS_SUPPORTS_SCHED_SMT
2208 SMT scheduler support improves the CPU scheduler's decision making
2209 when dealing with MIPS MT enabled cores at a cost of slightly
2210 increased overhead in some places. If unsure say N here.
2212 config SYS_SUPPORTS_SCHED_SMT
2215 config SYS_SUPPORTS_MULTITHREADING
2218 config MIPS_MT_FPAFF
2219 bool "Dynamic FPU affinity for FP-intensive threads"
2221 depends on MIPS_MT_SMP
2223 config MIPSR2_TO_R6_EMULATOR
2224 bool "MIPS R2-to-R6 emulator"
2225 depends on CPU_MIPSR6 && !SMP
2228 Choose this option if you want to run non-R6 MIPS userland code.
2229 Even if you say 'Y' here, the emulator will still be disabled by
2230 default. You can enable it using the 'mipsr2emu' kernel option.
2231 The only reason this is a build-time option is to save ~14K from the
2233 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2234 depends on SMP && CPU_MIPSR6
2236 config MIPS_VPE_LOADER
2237 bool "VPE loader support."
2238 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2239 select CPU_MIPSR2_IRQ_VI
2240 select CPU_MIPSR2_IRQ_EI
2243 Includes a loader for loading an elf relocatable object
2244 onto another VPE and running it.
2246 config MIPS_VPE_LOADER_CMP
2249 depends on MIPS_VPE_LOADER && MIPS_CMP
2251 config MIPS_VPE_LOADER_MT
2254 depends on MIPS_VPE_LOADER && !MIPS_CMP
2256 config MIPS_VPE_LOADER_TOM
2257 bool "Load VPE program into memory hidden from linux"
2258 depends on MIPS_VPE_LOADER
2261 The loader can use memory that is present but has been hidden from
2262 Linux using the kernel command line option "mem=xxMB". It's up to
2263 you to ensure the amount you put in the option and the space your
2264 program requires is less or equal to the amount physically present.
2266 config MIPS_VPE_APSP_API
2267 bool "Enable support for AP/SP API (RTLX)"
2268 depends on MIPS_VPE_LOADER
2271 config MIPS_VPE_APSP_API_CMP
2274 depends on MIPS_VPE_APSP_API && MIPS_CMP
2276 config MIPS_VPE_APSP_API_MT
2279 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2282 bool "MIPS CMP framework support (DEPRECATED)"
2283 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2286 select SYS_SUPPORTS_SMP
2287 select WEAK_ORDERING
2290 Select this if you are using a bootloader which implements the "CMP
2291 framework" protocol (ie. YAMON) and want your kernel to make use of
2292 its ability to start secondary CPUs.
2294 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2298 bool "MIPS Coherent Processing System support"
2299 depends on SYS_SUPPORTS_MIPS_CPS
2302 select MIPS_CPS_PM if HOTPLUG_CPU
2304 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2305 select SYS_SUPPORTS_HOTPLUG_CPU
2306 select SYS_SUPPORTS_SMP
2307 select WEAK_ORDERING
2309 Select this if you wish to run an SMP kernel across multiple cores
2310 within a MIPS Coherent Processing System. When this option is
2311 enabled the kernel will probe for other cores and boot them with
2312 no external assistance. It is safe to enable this when hardware
2313 support is unavailable.
2326 config SB1_PASS_2_WORKAROUNDS
2328 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2331 config SB1_PASS_2_1_WORKAROUNDS
2333 depends on CPU_SB1 && CPU_SB1_PASS_2
2337 config ARCH_PHYS_ADDR_T_64BIT
2341 prompt "SmartMIPS or microMIPS ASE support"
2343 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2346 Select this if you want neither microMIPS nor SmartMIPS support
2348 config CPU_HAS_SMARTMIPS
2349 depends on SYS_SUPPORTS_SMARTMIPS
2352 SmartMIPS is a extension of the MIPS32 architecture aimed at
2353 increased security at both hardware and software level for
2354 smartcards. Enabling this option will allow proper use of the
2355 SmartMIPS instructions by Linux applications. However a kernel with
2356 this option will not work on a MIPS core without SmartMIPS core. If
2357 you don't know you probably don't have SmartMIPS and should say N
2360 config CPU_MICROMIPS
2361 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2364 When this option is enabled the kernel will be built using the
2370 bool "Support for the MIPS SIMD Architecture"
2371 depends on CPU_SUPPORTS_MSA
2372 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2374 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2375 and a set of SIMD instructions to operate on them. When this option
2376 is enabled the kernel will support allocating & switching MSA
2377 vector register contexts. If you know that your kernel will only be
2378 running on CPUs which do not support MSA or that your userland will
2379 not be making use of it then you may wish to say N here to reduce
2380 the size & complexity of your kernel.
2391 # Vectored interrupt mode is an R2 feature
2393 config CPU_MIPSR2_IRQ_VI
2397 # Extended interrupt mode is an R2 feature
2399 config CPU_MIPSR2_IRQ_EI
2404 depends on !CPU_R3000
2410 config CPU_DADDI_WORKAROUNDS
2413 config CPU_R4000_WORKAROUNDS
2415 select CPU_R4400_WORKAROUNDS
2417 config CPU_R4400_WORKAROUNDS
2421 # - Highmem only makes sense for the 32-bit kernel.
2422 # - The current highmem code will only work properly on physically indexed
2423 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2424 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2425 # moment we protect the user and offer the highmem option only on machines
2426 # where it's known to be safe. This will not offer highmem on a few systems
2427 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2428 # indexed CPUs but we're playing safe.
2429 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2430 # know they might have memory configurations that could make use of highmem
2434 bool "High Memory Support"
2435 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2437 config CPU_SUPPORTS_HIGHMEM
2440 config SYS_SUPPORTS_HIGHMEM
2443 config SYS_SUPPORTS_SMARTMIPS
2446 config SYS_SUPPORTS_MICROMIPS
2449 config SYS_SUPPORTS_MIPS16
2452 This option must be set if a kernel might be executed on a MIPS16-
2453 enabled CPU even if MIPS16 is not actually being used. In other
2454 words, it makes the kernel MIPS16-tolerant.
2456 config CPU_SUPPORTS_MSA
2459 config ARCH_FLATMEM_ENABLE
2461 depends on !NUMA && !CPU_LOONGSON2
2463 config ARCH_DISCONTIGMEM_ENABLE
2465 default y if SGI_IP27
2467 Say Y to support efficient handling of discontiguous physical memory,
2468 for architectures which are either NUMA (Non-Uniform Memory Access)
2469 or have huge holes in the physical address space for other reasons.
2470 See <file:Documentation/vm/numa> for more.
2472 config ARCH_SPARSEMEM_ENABLE
2474 select SPARSEMEM_STATIC
2478 depends on SYS_SUPPORTS_NUMA
2480 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2481 Access). This option improves performance on systems with more
2482 than two nodes; on two node systems it is generally better to
2483 leave it disabled; on single node systems disable this option
2486 config SYS_SUPPORTS_NUMA
2490 bool "Relocatable kernel"
2491 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2493 This builds a kernel image that retains relocation information
2494 so it can be loaded someplace besides the default 1MB.
2495 The relocations make the kernel binary about 15% larger,
2496 but are discarded at runtime
2498 config RELOCATION_TABLE_SIZE
2499 hex "Relocation table size"
2500 depends on RELOCATABLE
2501 range 0x0 0x01000000
2502 default "0x00100000"
2504 A table of relocation data will be appended to the kernel binary
2505 and parsed at boot to fix up the relocated kernel.
2507 This option allows the amount of space reserved for the table to be
2508 adjusted, although the default of 1Mb should be ok in most cases.
2510 The build will fail and a valid size suggested if this is too small.
2512 If unsure, leave at the default value.
2514 config RANDOMIZE_BASE
2515 bool "Randomize the address of the kernel image"
2516 depends on RELOCATABLE
2518 Randomizes the physical and virtual address at which the
2519 kernel image is loaded, as a security feature that
2520 deters exploit attempts relying on knowledge of the location
2521 of kernel internals.
2523 Entropy is generated using any coprocessor 0 registers available.
2525 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2529 config RANDOMIZE_BASE_MAX_OFFSET
2530 hex "Maximum kASLR offset" if EXPERT
2531 depends on RANDOMIZE_BASE
2532 range 0x0 0x40000000 if EVA || 64BIT
2533 range 0x0 0x08000000
2534 default "0x01000000"
2536 When kASLR is active, this provides the maximum offset that will
2537 be applied to the kernel image. It should be set according to the
2538 amount of physical RAM available in the target system minus
2539 PHYSICAL_START and must be a power of 2.
2541 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2542 EVA or 64-bit. The default is 16Mb.
2547 depends on NEED_MULTIPLE_NODES
2549 config HW_PERF_EVENTS
2550 bool "Enable hardware performance counter support for perf events"
2551 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2554 Enable hardware performance counter support for perf events. If
2555 disabled, perf events will use software events only.
2560 bool "Multi-Processing support"
2561 depends on SYS_SUPPORTS_SMP
2563 This enables support for systems with more than one CPU. If you have
2564 a system with only one CPU, say N. If you have a system with more
2565 than one CPU, say Y.
2567 If you say N here, the kernel will run on uni- and multiprocessor
2568 machines, but will use only one CPU of a multiprocessor machine. If
2569 you say Y here, the kernel will run on many, but not all,
2570 uniprocessor machines. On a uniprocessor machine, the kernel
2571 will run faster if you say N here.
2573 People using multiprocessor machines who say Y here should also say
2574 Y to "Enhanced Real Time Clock Support", below.
2576 See also the SMP-HOWTO available at
2577 <http://www.tldp.org/docs.html#howto>.
2579 If you don't know what to do here, say N.
2584 config SYS_SUPPORTS_MIPS_CMP
2587 config SYS_SUPPORTS_MIPS_CPS
2590 config SYS_SUPPORTS_SMP
2593 config NR_CPUS_DEFAULT_4
2596 config NR_CPUS_DEFAULT_8
2599 config NR_CPUS_DEFAULT_16
2602 config NR_CPUS_DEFAULT_32
2605 config NR_CPUS_DEFAULT_64
2609 int "Maximum number of CPUs (2-256)"
2612 default "4" if NR_CPUS_DEFAULT_4
2613 default "8" if NR_CPUS_DEFAULT_8
2614 default "16" if NR_CPUS_DEFAULT_16
2615 default "32" if NR_CPUS_DEFAULT_32
2616 default "64" if NR_CPUS_DEFAULT_64
2618 This allows you to specify the maximum number of CPUs which this
2619 kernel will support. The maximum supported value is 32 for 32-bit
2620 kernel and 64 for 64-bit kernels; the minimum value which makes
2621 sense is 1 for Qemu (useful only for kernel debugging purposes)
2622 and 2 for all others.
2624 This is purely to save memory - each supported CPU adds
2625 approximately eight kilobytes to the kernel image. For best
2626 performance should round up your number of processors to the next
2629 config MIPS_PERF_SHARED_TC_COUNTERS
2633 # Timer Interrupt Frequency Configuration
2637 prompt "Timer frequency"
2640 Allows the configuration of the timer frequency.
2643 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2646 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2649 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2652 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2655 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2658 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2661 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2664 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2668 config SYS_SUPPORTS_24HZ
2671 config SYS_SUPPORTS_48HZ
2674 config SYS_SUPPORTS_100HZ
2677 config SYS_SUPPORTS_128HZ
2680 config SYS_SUPPORTS_250HZ
2683 config SYS_SUPPORTS_256HZ
2686 config SYS_SUPPORTS_1000HZ
2689 config SYS_SUPPORTS_1024HZ
2692 config SYS_SUPPORTS_ARBIT_HZ
2694 default y if !SYS_SUPPORTS_24HZ && \
2695 !SYS_SUPPORTS_48HZ && \
2696 !SYS_SUPPORTS_100HZ && \
2697 !SYS_SUPPORTS_128HZ && \
2698 !SYS_SUPPORTS_250HZ && \
2699 !SYS_SUPPORTS_256HZ && \
2700 !SYS_SUPPORTS_1000HZ && \
2701 !SYS_SUPPORTS_1024HZ
2707 default 100 if HZ_100
2708 default 128 if HZ_128
2709 default 250 if HZ_250
2710 default 256 if HZ_256
2711 default 1000 if HZ_1000
2712 default 1024 if HZ_1024
2715 def_bool HIGH_RES_TIMERS
2717 source "kernel/Kconfig.preempt"
2720 bool "Kexec system call"
2723 kexec is a system call that implements the ability to shutdown your
2724 current kernel, and to start another kernel. It is like a reboot
2725 but it is independent of the system firmware. And like a reboot
2726 you can start any kernel with it, not just Linux.
2728 The name comes from the similarity to the exec system call.
2730 It is an ongoing process to be certain the hardware in a machine
2731 is properly shutdown, so do not be surprised if this code does not
2732 initially work for you. As of this writing the exact hardware
2733 interface is strongly in flux, so no good recommendation can be
2737 bool "Kernel crash dumps"
2739 Generate crash dump after being started by kexec.
2740 This should be normally only set in special crash dump kernels
2741 which are loaded in the main kernel with kexec-tools into
2742 a specially reserved region and then later executed after
2743 a crash by kdump/kexec. The crash dump kernel must be compiled
2744 to a memory address not used by the main kernel or firmware using
2747 config PHYSICAL_START
2748 hex "Physical address where the kernel is loaded"
2749 default "0xffffffff84000000" if 64BIT
2750 default "0x84000000" if 32BIT
2751 depends on CRASH_DUMP
2753 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2754 If you plan to use kernel for capturing the crash dump change
2755 this value to start of the reserved region (the "X" value as
2756 specified in the "crashkernel=YM@XM" command line boot parameter
2757 passed to the panic-ed kernel).
2760 bool "Enable seccomp to safely compute untrusted bytecode"
2764 This kernel feature is useful for number crunching applications
2765 that may need to compute untrusted bytecode during their
2766 execution. By using pipes or other transports made available to
2767 the process as file descriptors supporting the read/write
2768 syscalls, it's possible to isolate those applications in
2769 their own address space using seccomp. Once seccomp is
2770 enabled via /proc/<pid>/seccomp, it cannot be disabled
2771 and the task is only allowed to execute a few safe syscalls
2772 defined by each seccomp mode.
2774 If unsure, say Y. Only embedded should say N here.
2776 config MIPS_O32_FP64_SUPPORT
2777 bool "Support for O32 binaries using 64-bit FP"
2778 depends on 32BIT || MIPS32_O32
2780 When this is enabled, the kernel will support use of 64-bit floating
2781 point registers with binaries using the O32 ABI along with the
2782 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2783 32-bit MIPS systems this support is at the cost of increasing the
2784 size and complexity of the compiled FPU emulator. Thus if you are
2785 running a MIPS32 system and know that none of your userland binaries
2786 will require 64-bit floating point, you may wish to reduce the size
2787 of your kernel & potentially improve FP emulation performance by
2790 Although binutils currently supports use of this flag the details
2791 concerning its effect upon the O32 ABI in userland are still being
2792 worked on. In order to avoid userland becoming dependant upon current
2793 behaviour before the details have been finalised, this option should
2794 be considered experimental and only enabled by those working upon
2802 select OF_EARLY_FLATTREE
2809 prompt "Kernel appended dtb support" if USE_OF
2810 default MIPS_NO_APPENDED_DTB
2812 config MIPS_NO_APPENDED_DTB
2815 Do not enable appended dtb support.
2817 config MIPS_ELF_APPENDED_DTB
2820 With this option, the boot code will look for a device tree binary
2821 DTB) included in the vmlinux ELF section .appended_dtb. By default
2822 it is empty and the DTB can be appended using binutils command
2825 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2827 This is meant as a backward compatiblity convenience for those
2828 systems with a bootloader that can't be upgraded to accommodate
2829 the documented boot protocol using a device tree.
2831 config MIPS_RAW_APPENDED_DTB
2834 With this option, the boot code will look for a device tree binary
2835 DTB) appended to raw vmlinux.bin (without decompressor).
2836 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2838 This is meant as a backward compatibility convenience for those
2839 systems with a bootloader that can't be upgraded to accommodate
2840 the documented boot protocol using a device tree.
2842 Beware that there is very little in terms of protection against
2843 this option being confused by leftover garbage in memory that might
2844 look like a DTB header after a reboot if no actual DTB is appended
2845 to vmlinux.bin. Do not leave this option active in a production kernel
2846 if you don't intend to always append a DTB.
2848 config MIPS_ZBOOT_APPENDED_DTB
2850 depends on SYS_SUPPORTS_ZBOOT
2852 With this option, the boot code will look for a device tree binary
2853 DTB) appended to raw vmlinuz.bin (with decompressor).
2854 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2856 This is meant as a backward compatibility convenience for those
2857 systems with a bootloader that can't be upgraded to accommodate
2858 the documented boot protocol using a device tree.
2860 Beware that there is very little in terms of protection against
2861 this option being confused by leftover garbage in memory that might
2862 look like a DTB header after a reboot if no actual DTB is appended
2863 to vmlinuz.bin. Do not leave this option active in a production kernel
2864 if you don't intend to always append a DTB.
2868 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2869 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2870 !MIPS_MALTA && !MIPS_SEAD3 && \
2872 default MIPS_CMDLINE_FROM_BOOTLOADER
2874 config MIPS_CMDLINE_FROM_DTB
2876 bool "Dtb kernel arguments if available"
2878 config MIPS_CMDLINE_DTB_EXTEND
2880 bool "Extend dtb kernel arguments with bootloader arguments"
2882 config MIPS_CMDLINE_FROM_BOOTLOADER
2883 bool "Bootloader kernel arguments if available"
2888 config LOCKDEP_SUPPORT
2892 config STACKTRACE_SUPPORT
2896 config HAVE_LATENCYTOP_SUPPORT
2900 config PGTABLE_LEVELS
2902 default 3 if 64BIT && !PAGE_SIZE_64KB
2905 source "init/Kconfig"
2907 source "kernel/Kconfig.freezer"
2909 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2917 bool "Support for PCI controller"
2918 depends on HW_HAS_PCI
2920 select NO_GENERIC_PCI_IOPORT_MAP
2922 Find out whether you have a PCI motherboard. PCI is the name of a
2923 bus system, i.e. the way the CPU talks to the other stuff inside
2924 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2928 bool "Support for HT-linked PCI"
2930 depends on CPU_LOONGSON3
2934 Loongson family machines use Hyper-Transport bus for inter-core
2935 connection and device connection. The PCI bus is a subordinate
2936 linked at HT. Choose Y for Loongson-3 based machines.
2941 source "drivers/pci/Kconfig"
2944 # ISA support is now enabled via select. Too many systems still have the one
2945 # or other ISA chip on the board that users don't know about so don't expect
2946 # users to choose the right thing ...
2953 depends on HW_HAS_EISA
2955 select GENERIC_ISA_DMA
2957 The Extended Industry Standard Architecture (EISA) bus was
2958 developed as an open alternative to the IBM MicroChannel bus.
2960 The EISA bus provided some of the features of the IBM MicroChannel
2961 bus while maintaining backward compatibility with cards made for
2962 the older ISA bus. The EISA bus saw limited use between 1988 and
2963 1995 when it was made obsolete by the PCI bus.
2965 Say Y here if you are building a kernel for an EISA-based machine.
2969 source "drivers/eisa/Kconfig"
2972 bool "TURBOchannel support"
2973 depends on MACH_DECSTATION
2975 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2976 processors. TURBOchannel programming specifications are available
2978 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2980 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2981 Linux driver support status is documented at:
2982 <http://www.linux-mips.org/wiki/DECstation>
2992 select MIPS_EXTERNAL_TIMER
3000 source "drivers/pcmcia/Kconfig"
3003 tristate "RapidIO support"
3007 If you say Y here, the kernel will include drivers and
3008 infrastructure code to support RapidIO interconnect devices.
3010 source "drivers/rapidio/Kconfig"
3014 menu "Executable file formats"
3016 source "fs/Kconfig.binfmt"
3021 config MIPS32_COMPAT
3027 config SYSVIPC_COMPAT
3031 bool "Kernel support for o32 binaries"
3033 select ARCH_WANT_OLD_COMPAT_IPC
3035 select MIPS32_COMPAT
3036 select SYSVIPC_COMPAT if SYSVIPC
3038 Select this option if you want to run o32 binaries. These are pure
3039 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3040 existing binaries are in this format.
3045 bool "Kernel support for n32 binaries"
3048 select MIPS32_COMPAT
3049 select SYSVIPC_COMPAT if SYSVIPC
3051 Select this option if you want to run n32 binaries. These are
3052 64-bit binaries using 32-bit quantities for addressing and certain
3053 data that would normally be 64-bit. They are used in special
3060 default y if MIPS32_O32 || MIPS32_N32
3064 menu "Power management options"
3066 config ARCH_HIBERNATION_POSSIBLE
3068 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3070 config ARCH_SUSPEND_POSSIBLE
3072 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3074 source "kernel/power/Kconfig"
3078 config MIPS_EXTERNAL_TIMER
3081 menu "CPU Power Management"
3083 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3084 source "drivers/cpufreq/Kconfig"
3087 source "drivers/cpuidle/Kconfig"
3091 source "net/Kconfig"
3093 source "drivers/Kconfig"
3095 source "drivers/firmware/Kconfig"
3099 source "arch/mips/Kconfig.debug"
3101 source "security/Kconfig"
3103 source "crypto/Kconfig"
3105 source "lib/Kconfig"
3107 source "arch/mips/kvm/Kconfig"