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_RELOCATABLE
403 select SYS_SUPPORTS_ZBOOT
404 select SYS_HAS_EARLY_PRINTK
405 select USE_GENERIC_EARLY_PRINTK_8250
408 This enables support for the IMG Pistachio SoC platform.
411 bool "MIPSfpga Xilinx based boards"
412 select ARCH_REQUIRE_GPIOLIB
421 select MIPS_CPU_SCACHE
422 select SYS_HAS_EARLY_PRINTK
423 select SYS_HAS_CPU_MIPS32_R2
424 select SYS_SUPPORTS_32BIT_KERNEL
425 select SYS_SUPPORTS_LITTLE_ENDIAN
426 select SYS_SUPPORTS_ZBOOT_UART16550
428 select USE_GENERIC_EARLY_PRINTK_8250
430 This enables support for the IMG University Program MIPSfpga platform.
433 bool "MIPS Malta board"
434 select ARCH_MAY_HAVE_PC_FDC
440 select CLKSRC_MIPS_GIC
442 select DMA_MAYBE_COHERENT
443 select GENERIC_ISA_DMA
444 select HAVE_PCSPKR_PLATFORM
451 select MIPS_CPU_SCACHE
452 select MIPS_L1_CACHE_SHIFT_6
453 select PCI_GT64XXX_PCI0
457 select SYS_HAS_CPU_MIPS32_R1
458 select SYS_HAS_CPU_MIPS32_R2
459 select SYS_HAS_CPU_MIPS32_R3_5
460 select SYS_HAS_CPU_MIPS32_R5
461 select SYS_HAS_CPU_MIPS32_R6
462 select SYS_HAS_CPU_MIPS64_R1
463 select SYS_HAS_CPU_MIPS64_R2
464 select SYS_HAS_CPU_MIPS64_R6
465 select SYS_HAS_CPU_NEVADA
466 select SYS_HAS_CPU_RM7000
467 select SYS_SUPPORTS_32BIT_KERNEL
468 select SYS_SUPPORTS_64BIT_KERNEL
469 select SYS_SUPPORTS_BIG_ENDIAN
470 select SYS_SUPPORTS_HIGHMEM
471 select SYS_SUPPORTS_LITTLE_ENDIAN
472 select SYS_SUPPORTS_MICROMIPS
473 select SYS_SUPPORTS_MIPS_CMP
474 select SYS_SUPPORTS_MIPS_CPS
475 select SYS_SUPPORTS_MIPS16
476 select SYS_SUPPORTS_MULTITHREADING
477 select SYS_SUPPORTS_SMARTMIPS
478 select SYS_SUPPORTS_ZBOOT
479 select SYS_SUPPORTS_RELOCATABLE
481 select ZONE_DMA32 if 64BIT
485 This enables support for the MIPS Technologies Malta evaluation
489 bool "Microchip PIC32 Family"
491 This enables support for the Microchip PIC32 family of platforms.
493 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
497 bool "MIPS SEAD3 board"
503 select CLKSRC_MIPS_GIC
505 select CPU_MIPSR2_IRQ_VI
506 select CPU_MIPSR2_IRQ_EI
507 select DMA_NONCOHERENT
512 select SYS_HAS_CPU_MIPS32_R1
513 select SYS_HAS_CPU_MIPS32_R2
514 select SYS_HAS_CPU_MIPS32_R6
515 select SYS_HAS_CPU_MIPS64_R1
516 select SYS_HAS_EARLY_PRINTK
517 select SYS_SUPPORTS_32BIT_KERNEL
518 select SYS_SUPPORTS_64BIT_KERNEL
519 select SYS_SUPPORTS_BIG_ENDIAN
520 select SYS_SUPPORTS_LITTLE_ENDIAN
521 select SYS_SUPPORTS_SMARTMIPS
522 select SYS_SUPPORTS_MICROMIPS
523 select SYS_SUPPORTS_MIPS16
524 select SYS_SUPPORTS_RELOCATABLE
525 select USB_EHCI_BIG_ENDIAN_DESC
526 select USB_EHCI_BIG_ENDIAN_MMIO
529 This enables support for the MIPS Technologies SEAD3 evaluation
533 bool "NEC EMMA2RH Mark-eins board"
537 This enables support for the NEC Electronics Mark-eins boards.
540 bool "NEC VR4100 series based machines"
543 select SYS_HAS_CPU_VR41XX
544 select SYS_SUPPORTS_MIPS16
545 select ARCH_REQUIRE_GPIOLIB
548 bool "NXP STB220 board"
551 Support for NXP Semiconductors STB220 Development Board.
558 Support for NXP Semiconductors STB225 Development Board.
561 bool "PMC-Sierra MSP chipsets"
564 select DMA_NONCOHERENT
566 select NO_EXCEPT_FILL
568 select SYS_HAS_CPU_MIPS32_R1
569 select SYS_HAS_CPU_MIPS32_R2
570 select SYS_SUPPORTS_32BIT_KERNEL
571 select SYS_SUPPORTS_BIG_ENDIAN
572 select SYS_SUPPORTS_MIPS16
575 select SERIAL_8250_CONSOLE
576 select USB_EHCI_BIG_ENDIAN_MMIO
577 select USB_EHCI_BIG_ENDIAN_DESC
579 This adds support for the PMC-Sierra family of Multi-Service
580 Processor System-On-A-Chips. These parts include a number
581 of integrated peripherals, interfaces and DSPs in addition to
582 a variety of MIPS cores.
585 bool "Ralink based machines"
589 select DMA_NONCOHERENT
592 select SYS_HAS_CPU_MIPS32_R1
593 select SYS_HAS_CPU_MIPS32_R2
594 select SYS_SUPPORTS_32BIT_KERNEL
595 select SYS_SUPPORTS_LITTLE_ENDIAN
596 select SYS_SUPPORTS_MIPS16
597 select SYS_HAS_EARLY_PRINTK
599 select ARCH_HAS_RESET_CONTROLLER
600 select RESET_CONTROLLER
603 bool "SGI IP22 (Indy/Indigo2)"
609 select DEFAULT_SGI_PARTITION
610 select DMA_NONCOHERENT
614 select IP22_CPU_SCACHE
616 select GENERIC_ISA_DMA_SUPPORT_BROKEN
618 select SGI_HAS_INDYDOG
624 select SYS_HAS_CPU_R4X00
625 select SYS_HAS_CPU_R5000
627 # Disable EARLY_PRINTK for now since it leads to overwritten prom
628 # memory during early boot on some machines.
630 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
631 # for a more details discussion
633 # select SYS_HAS_EARLY_PRINTK
634 select SYS_SUPPORTS_32BIT_KERNEL
635 select SYS_SUPPORTS_64BIT_KERNEL
636 select SYS_SUPPORTS_BIG_ENDIAN
637 select MIPS_L1_CACHE_SHIFT_7
639 This are the SGI Indy, Challenge S and Indigo2, as well as certain
640 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
641 that runs on these, say Y here.
644 bool "SGI IP27 (Origin200/2000)"
648 select DEFAULT_SGI_PARTITION
650 select SYS_HAS_EARLY_PRINTK
652 select NR_CPUS_DEFAULT_64
653 select SYS_HAS_CPU_R10000
654 select SYS_SUPPORTS_64BIT_KERNEL
655 select SYS_SUPPORTS_BIG_ENDIAN
656 select SYS_SUPPORTS_NUMA
657 select SYS_SUPPORTS_SMP
658 select MIPS_L1_CACHE_SHIFT_7
660 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
661 workstations. To compile a Linux kernel that runs on these, say Y
665 bool "SGI IP28 (Indigo2 R10k)"
671 select DEFAULT_SGI_PARTITION
672 select DMA_NONCOHERENT
673 select GENERIC_ISA_DMA_SUPPORT_BROKEN
679 select SGI_HAS_INDYDOG
685 select SYS_HAS_CPU_R10000
687 # Disable EARLY_PRINTK for now since it leads to overwritten prom
688 # memory during early boot on some machines.
690 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
691 # for a more details discussion
693 # select SYS_HAS_EARLY_PRINTK
694 select SYS_SUPPORTS_64BIT_KERNEL
695 select SYS_SUPPORTS_BIG_ENDIAN
696 select MIPS_L1_CACHE_SHIFT_7
698 This is the SGI Indigo2 with R10000 processor. To compile a Linux
699 kernel that runs on these, say Y here.
708 select DMA_NONCOHERENT
711 select R5000_CPU_SCACHE
712 select RM7000_CPU_SCACHE
713 select SYS_HAS_CPU_R5000
714 select SYS_HAS_CPU_R10000 if BROKEN
715 select SYS_HAS_CPU_RM7000
716 select SYS_HAS_CPU_NEVADA
717 select SYS_SUPPORTS_64BIT_KERNEL
718 select SYS_SUPPORTS_BIG_ENDIAN
720 If you want this kernel to run on SGI O2 workstation, say Y here.
723 bool "Sibyte BCM91120C-CRhine"
726 select SIBYTE_BCM1120
728 select SYS_HAS_CPU_SB1
729 select SYS_SUPPORTS_BIG_ENDIAN
730 select SYS_SUPPORTS_LITTLE_ENDIAN
733 bool "Sibyte BCM91120x-Carmel"
736 select SIBYTE_BCM1120
738 select SYS_HAS_CPU_SB1
739 select SYS_SUPPORTS_BIG_ENDIAN
740 select SYS_SUPPORTS_LITTLE_ENDIAN
743 bool "Sibyte BCM91125C-CRhone"
746 select SIBYTE_BCM1125
748 select SYS_HAS_CPU_SB1
749 select SYS_SUPPORTS_BIG_ENDIAN
750 select SYS_SUPPORTS_HIGHMEM
751 select SYS_SUPPORTS_LITTLE_ENDIAN
754 bool "Sibyte BCM91125E-Rhone"
757 select SIBYTE_BCM1125H
759 select SYS_HAS_CPU_SB1
760 select SYS_SUPPORTS_BIG_ENDIAN
761 select SYS_SUPPORTS_LITTLE_ENDIAN
764 bool "Sibyte BCM91250A-SWARM"
767 select HAVE_PATA_PLATFORM
770 select SYS_HAS_CPU_SB1
771 select SYS_SUPPORTS_BIG_ENDIAN
772 select SYS_SUPPORTS_HIGHMEM
773 select SYS_SUPPORTS_LITTLE_ENDIAN
774 select ZONE_DMA32 if 64BIT
776 config SIBYTE_LITTLESUR
777 bool "Sibyte BCM91250C2-LittleSur"
780 select HAVE_PATA_PLATFORM
783 select SYS_HAS_CPU_SB1
784 select SYS_SUPPORTS_BIG_ENDIAN
785 select SYS_SUPPORTS_HIGHMEM
786 select SYS_SUPPORTS_LITTLE_ENDIAN
788 config SIBYTE_SENTOSA
789 bool "Sibyte BCM91250E-Sentosa"
794 select SYS_HAS_CPU_SB1
795 select SYS_SUPPORTS_BIG_ENDIAN
796 select SYS_SUPPORTS_LITTLE_ENDIAN
799 bool "Sibyte BCM91480B-BigSur"
802 select NR_CPUS_DEFAULT_4
803 select SIBYTE_BCM1x80
805 select SYS_HAS_CPU_SB1
806 select SYS_SUPPORTS_BIG_ENDIAN
807 select SYS_SUPPORTS_HIGHMEM
808 select SYS_SUPPORTS_LITTLE_ENDIAN
809 select ZONE_DMA32 if 64BIT
812 bool "SNI RM200/300/400"
813 select FW_ARC if CPU_LITTLE_ENDIAN
814 select FW_ARC32 if CPU_LITTLE_ENDIAN
815 select FW_SNIPROM if CPU_BIG_ENDIAN
816 select ARCH_MAY_HAVE_PC_FDC
820 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
821 select DMA_NONCOHERENT
822 select GENERIC_ISA_DMA
823 select HAVE_PCSPKR_PLATFORM
830 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
831 select SYS_HAS_CPU_R4X00
832 select SYS_HAS_CPU_R5000
833 select SYS_HAS_CPU_R10000
834 select R5000_CPU_SCACHE
835 select SYS_HAS_EARLY_PRINTK
836 select SYS_SUPPORTS_32BIT_KERNEL
837 select SYS_SUPPORTS_64BIT_KERNEL
838 select SYS_SUPPORTS_BIG_ENDIAN
839 select SYS_SUPPORTS_HIGHMEM
840 select SYS_SUPPORTS_LITTLE_ENDIAN
842 The SNI RM200/300/400 are MIPS-based machines manufactured by
843 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
844 Technology and now in turn merged with Fujitsu. Say Y here to
845 support this machine type.
848 bool "Toshiba TX39 series based machines"
851 bool "Toshiba TX49 series based machines"
853 config MIKROTIK_RB532
854 bool "Mikrotik RB532 boards"
857 select DMA_NONCOHERENT
860 select SYS_HAS_CPU_MIPS32_R1
861 select SYS_SUPPORTS_32BIT_KERNEL
862 select SYS_SUPPORTS_LITTLE_ENDIAN
865 select ARCH_REQUIRE_GPIOLIB
866 select MIPS_L1_CACHE_SHIFT_4
868 Support the Mikrotik(tm) RouterBoard 532 series,
869 based on the IDT RC32434 SoC.
871 config CAVIUM_OCTEON_SOC
872 bool "Cavium Networks Octeon SoC based boards"
874 select ARCH_PHYS_ADDR_T_64BIT
876 select SYS_SUPPORTS_64BIT_KERNEL
877 select SYS_SUPPORTS_BIG_ENDIAN
879 select EDAC_ATOMIC_SCRUB
880 select SYS_SUPPORTS_LITTLE_ENDIAN
881 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
882 select SYS_HAS_EARLY_PRINTK
883 select SYS_HAS_CPU_CAVIUM_OCTEON
888 select ARCH_REQUIRE_GPIOLIB
891 select ARCH_SPARSEMEM_ENABLE
892 select SYS_SUPPORTS_SMP
893 select NR_CPUS_DEFAULT_16
895 select MTD_COMPLEX_MAPPINGS
897 This option supports all of the Octeon reference boards from Cavium
898 Networks. It builds a kernel that dynamically determines the Octeon
899 CPU type and supports all known board reference implementations.
900 Some of the supported boards are:
907 Say Y here for most Octeon reference boards.
910 bool "Netlogic XLR/XLS based systems"
913 select SYS_HAS_CPU_XLR
914 select SYS_SUPPORTS_SMP
917 select SYS_SUPPORTS_32BIT_KERNEL
918 select SYS_SUPPORTS_64BIT_KERNEL
919 select ARCH_PHYS_ADDR_T_64BIT
920 select SYS_SUPPORTS_BIG_ENDIAN
921 select SYS_SUPPORTS_HIGHMEM
923 select NR_CPUS_DEFAULT_32
927 select ZONE_DMA32 if 64BIT
929 select SYS_HAS_EARLY_PRINTK
930 select SYS_SUPPORTS_ZBOOT
931 select SYS_SUPPORTS_ZBOOT_UART16550
933 Support for systems based on Netlogic XLR and XLS processors.
934 Say Y here if you have a XLR or XLS based board.
937 bool "Netlogic XLP based systems"
940 select SYS_HAS_CPU_XLP
941 select SYS_SUPPORTS_SMP
943 select SYS_SUPPORTS_32BIT_KERNEL
944 select SYS_SUPPORTS_64BIT_KERNEL
945 select ARCH_PHYS_ADDR_T_64BIT
946 select ARCH_REQUIRE_GPIOLIB
947 select SYS_SUPPORTS_BIG_ENDIAN
948 select SYS_SUPPORTS_LITTLE_ENDIAN
949 select SYS_SUPPORTS_HIGHMEM
951 select NR_CPUS_DEFAULT_32
955 select ZONE_DMA32 if 64BIT
957 select SYS_HAS_EARLY_PRINTK
959 select SYS_SUPPORTS_ZBOOT
960 select SYS_SUPPORTS_ZBOOT_UART16550
962 This board is based on Netlogic XLP Processor.
963 Say Y here if you have a XLP based board.
966 bool "Para-Virtualized guest system"
970 select SYS_SUPPORTS_64BIT_KERNEL
971 select SYS_SUPPORTS_32BIT_KERNEL
972 select SYS_SUPPORTS_BIG_ENDIAN
973 select SYS_SUPPORTS_SMP
974 select NR_CPUS_DEFAULT_4
975 select SYS_HAS_EARLY_PRINTK
976 select SYS_HAS_CPU_MIPS32_R2
977 select SYS_HAS_CPU_MIPS64_R2
978 select SYS_HAS_CPU_CAVIUM_OCTEON
982 This option supports guest running under ????
986 source "arch/mips/alchemy/Kconfig"
987 source "arch/mips/ath25/Kconfig"
988 source "arch/mips/ath79/Kconfig"
989 source "arch/mips/bcm47xx/Kconfig"
990 source "arch/mips/bcm63xx/Kconfig"
991 source "arch/mips/bmips/Kconfig"
992 source "arch/mips/jazz/Kconfig"
993 source "arch/mips/jz4740/Kconfig"
994 source "arch/mips/lantiq/Kconfig"
995 source "arch/mips/lasat/Kconfig"
996 source "arch/mips/pic32/Kconfig"
997 source "arch/mips/pistachio/Kconfig"
998 source "arch/mips/pmcs-msp71xx/Kconfig"
999 source "arch/mips/ralink/Kconfig"
1000 source "arch/mips/sgi-ip27/Kconfig"
1001 source "arch/mips/sibyte/Kconfig"
1002 source "arch/mips/txx9/Kconfig"
1003 source "arch/mips/vr41xx/Kconfig"
1004 source "arch/mips/cavium-octeon/Kconfig"
1005 source "arch/mips/loongson32/Kconfig"
1006 source "arch/mips/loongson64/Kconfig"
1007 source "arch/mips/netlogic/Kconfig"
1008 source "arch/mips/paravirt/Kconfig"
1009 source "arch/mips/xilfpga/Kconfig"
1013 config RWSEM_GENERIC_SPINLOCK
1017 config RWSEM_XCHGADD_ALGORITHM
1020 config ARCH_HAS_ILOG2_U32
1024 config ARCH_HAS_ILOG2_U64
1028 config GENERIC_HWEIGHT
1032 config GENERIC_CALIBRATE_DELAY
1036 config SCHED_OMIT_FRAME_POINTER
1041 # Select some configuration options automatically based on user selections.
1046 config ARCH_MAY_HAVE_PC_FDC
1082 config MIPS_CLOCK_VSYSCALL
1083 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1086 select ARCH_REQUIRE_GPIOLIB
1092 config ARCH_DMA_ADDR_T_64BIT
1093 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1095 config ARCH_SUPPORTS_UPROBES
1098 config DMA_MAYBE_COHERENT
1099 select DMA_NONCOHERENT
1105 config DMA_NONCOHERENT
1107 select NEED_DMA_MAP_STATE
1109 config NEED_DMA_MAP_STATE
1112 config SYS_HAS_EARLY_PRINTK
1116 bool "Support for hot-pluggable CPUs"
1117 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1119 Say Y here to allow turning CPUs off and on. CPUs can be
1120 controlled through /sys/devices/system/cpu.
1121 (Note: power management support will enable this option
1122 automatically on SMP systems. )
1123 Say N if you want to disable CPU hotplug.
1125 config SYS_SUPPORTS_HOTPLUG_CPU
1128 config MIPS_BONITO64
1143 config NO_IOPORT_MAP
1149 config GENERIC_ISA_DMA
1151 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1154 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1156 select GENERIC_ISA_DMA
1161 config HOLES_IN_ZONE
1164 config SYS_SUPPORTS_RELOCATABLE
1167 Selected if the platform supports relocating the kernel.
1168 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1169 to allow access to command line and entropy sources.
1172 # Endianness selection. Sufficiently obscure so many users don't know what to
1173 # answer,so we try hard to limit the available choices. Also the use of a
1174 # choice statement should be more obvious to the user.
1177 prompt "Endianness selection"
1179 Some MIPS machines can be configured for either little or big endian
1180 byte order. These modes require different kernels and a different
1181 Linux distribution. In general there is one preferred byteorder for a
1182 particular system but some systems are just as commonly used in the
1183 one or the other endianness.
1185 config CPU_BIG_ENDIAN
1187 depends on SYS_SUPPORTS_BIG_ENDIAN
1189 config CPU_LITTLE_ENDIAN
1190 bool "Little endian"
1191 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1198 config SYS_SUPPORTS_APM_EMULATION
1201 config SYS_SUPPORTS_BIG_ENDIAN
1204 config SYS_SUPPORTS_LITTLE_ENDIAN
1207 config SYS_SUPPORTS_HUGETLBFS
1209 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1212 config MIPS_HUGE_TLB_SUPPORT
1213 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1230 config PCI_GT64XXX_PCI0
1233 config NO_EXCEPT_FILL
1240 select DMA_NONCOHERENT
1242 select SWAP_IO_SPACE
1243 select SYS_HAS_CPU_R5500
1244 select SYS_SUPPORTS_32BIT_KERNEL
1245 select SYS_SUPPORTS_64BIT_KERNEL
1246 select SYS_SUPPORTS_BIG_ENDIAN
1253 select DMA_NONCOHERENT
1254 select SYS_HAS_CPU_MIPS32_R2
1255 select SYS_SUPPORTS_32BIT_KERNEL
1256 select SYS_SUPPORTS_LITTLE_ENDIAN
1257 select SYS_SUPPORTS_BIG_ENDIAN
1258 select SYS_SUPPORTS_MIPS16
1259 select CPU_MIPSR2_IRQ_VI
1268 config SWAP_IO_SPACE
1271 config SGI_HAS_INDYDOG
1283 config SGI_HAS_ZILOG
1286 config SGI_HAS_I8042
1289 config DEFAULT_SGI_PARTITION
1301 config MIPS_L1_CACHE_SHIFT_4
1304 config MIPS_L1_CACHE_SHIFT_5
1307 config MIPS_L1_CACHE_SHIFT_6
1310 config MIPS_L1_CACHE_SHIFT_7
1313 config MIPS_L1_CACHE_SHIFT
1315 default "7" if MIPS_L1_CACHE_SHIFT_7
1316 default "6" if MIPS_L1_CACHE_SHIFT_6
1317 default "5" if MIPS_L1_CACHE_SHIFT_5
1318 default "4" if MIPS_L1_CACHE_SHIFT_4
1321 config HAVE_STD_PC_SERIAL_PORT
1325 bool "ARC console support"
1326 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1330 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1335 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1344 menu "CPU selection"
1350 config CPU_LOONGSON3
1351 bool "Loongson 3 CPU"
1352 depends on SYS_HAS_CPU_LOONGSON3
1353 select CPU_SUPPORTS_64BIT_KERNEL
1354 select CPU_SUPPORTS_HIGHMEM
1355 select CPU_SUPPORTS_HUGEPAGES
1356 select WEAK_ORDERING
1357 select WEAK_REORDERING_BEYOND_LLSC
1358 select MIPS_PGD_C0_CONTEXT
1359 select ARCH_REQUIRE_GPIOLIB
1361 The Loongson 3 processor implements the MIPS64R2 instruction
1362 set with many extensions.
1364 config LOONGSON3_ENHANCEMENT
1365 bool "New Loongson 3 CPU Enhancements"
1368 select CPU_HAS_PREFETCH
1369 depends on CPU_LOONGSON3
1371 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1372 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1373 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1374 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1375 Fast TLB refill support, etc.
1377 This option enable those enhancements which are not probed at run
1378 time. If you want a generic kernel to run on all Loongson 3 machines,
1379 please say 'N' here. If you want a high-performance kernel to run on
1380 new Loongson 3 machines only, please say 'Y' here.
1382 config CPU_LOONGSON2E
1384 depends on SYS_HAS_CPU_LOONGSON2E
1385 select CPU_LOONGSON2
1387 The Loongson 2E processor implements the MIPS III instruction set
1388 with many extensions.
1390 It has an internal FPGA northbridge, which is compatible to
1393 config CPU_LOONGSON2F
1395 depends on SYS_HAS_CPU_LOONGSON2F
1396 select CPU_LOONGSON2
1397 select ARCH_REQUIRE_GPIOLIB
1399 The Loongson 2F processor implements the MIPS III instruction set
1400 with many extensions.
1402 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1403 have a similar programming interface with FPGA northbridge used in
1406 config CPU_LOONGSON1B
1408 depends on SYS_HAS_CPU_LOONGSON1B
1409 select CPU_LOONGSON1
1410 select ARCH_WANT_OPTIONAL_GPIOLIB
1411 select LEDS_GPIO_REGISTER
1413 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1414 release 2 instruction set.
1416 config CPU_MIPS32_R1
1417 bool "MIPS32 Release 1"
1418 depends on SYS_HAS_CPU_MIPS32_R1
1419 select CPU_HAS_PREFETCH
1420 select CPU_SUPPORTS_32BIT_KERNEL
1421 select CPU_SUPPORTS_HIGHMEM
1423 Choose this option to build a kernel for release 1 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.
1428 Release 2 of the MIPS32 architecture is available since several
1429 years so chances are you even have a MIPS32 Release 2 processor
1430 in which case you should choose CPU_MIPS32_R2 instead for better
1433 config CPU_MIPS32_R2
1434 bool "MIPS32 Release 2"
1435 depends on SYS_HAS_CPU_MIPS32_R2
1436 select CPU_HAS_PREFETCH
1437 select CPU_SUPPORTS_32BIT_KERNEL
1438 select CPU_SUPPORTS_HIGHMEM
1439 select CPU_SUPPORTS_MSA
1442 Choose this option to build a kernel for release 2 or later of the
1443 MIPS32 architecture. Most modern embedded systems with a 32-bit
1444 MIPS processor are based on a MIPS32 processor. If you know the
1445 specific type of processor in your system, choose those that one
1446 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1448 config CPU_MIPS32_R6
1449 bool "MIPS32 Release 6"
1450 depends on SYS_HAS_CPU_MIPS32_R6
1451 select CPU_HAS_PREFETCH
1452 select CPU_SUPPORTS_32BIT_KERNEL
1453 select CPU_SUPPORTS_HIGHMEM
1454 select CPU_SUPPORTS_MSA
1457 select MIPS_O32_FP64_SUPPORT
1459 Choose this option to build a kernel for release 6 or later of the
1460 MIPS32 architecture. New MIPS processors, starting with the Warrior
1461 family, are based on a MIPS32r6 processor. If you own an older
1462 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1464 config CPU_MIPS64_R1
1465 bool "MIPS64 Release 1"
1466 depends on SYS_HAS_CPU_MIPS64_R1
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
1473 Choose this option to build a kernel for release 1 or later of the
1474 MIPS64 architecture. Many modern embedded systems with a 64-bit
1475 MIPS processor are based on a MIPS64 processor. If you know the
1476 specific type of processor in your system, choose those that one
1477 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1478 Release 2 of the MIPS64 architecture is available since several
1479 years so chances are you even have a MIPS64 Release 2 processor
1480 in which case you should choose CPU_MIPS64_R2 instead for better
1483 config CPU_MIPS64_R2
1484 bool "MIPS64 Release 2"
1485 depends on SYS_HAS_CPU_MIPS64_R2
1486 select CPU_HAS_PREFETCH
1487 select CPU_SUPPORTS_32BIT_KERNEL
1488 select CPU_SUPPORTS_64BIT_KERNEL
1489 select CPU_SUPPORTS_HIGHMEM
1490 select CPU_SUPPORTS_HUGEPAGES
1491 select CPU_SUPPORTS_MSA
1493 Choose this option to build a kernel for release 2 or later of the
1494 MIPS64 architecture. Many modern embedded systems with a 64-bit
1495 MIPS processor are based on a MIPS64 processor. If you know the
1496 specific type of processor in your system, choose those that one
1497 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1499 config CPU_MIPS64_R6
1500 bool "MIPS64 Release 6"
1501 depends on SYS_HAS_CPU_MIPS64_R6
1502 select CPU_HAS_PREFETCH
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_64BIT_KERNEL
1505 select CPU_SUPPORTS_HIGHMEM
1506 select CPU_SUPPORTS_MSA
1508 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1510 Choose this option to build a kernel for release 6 or later of the
1511 MIPS64 architecture. New MIPS processors, starting with the Warrior
1512 family, are based on a MIPS64r6 processor. If you own an older
1513 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1517 depends on SYS_HAS_CPU_R3000
1519 select CPU_SUPPORTS_32BIT_KERNEL
1520 select CPU_SUPPORTS_HIGHMEM
1522 Please make sure to pick the right CPU type. Linux/MIPS is not
1523 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1524 *not* work on R4000 machines and vice versa. However, since most
1525 of the supported machines have an R4000 (or similar) CPU, R4x00
1526 might be a safe bet. If the resulting kernel does not work,
1527 try to recompile with R3000.
1531 depends on SYS_HAS_CPU_TX39XX
1532 select CPU_SUPPORTS_32BIT_KERNEL
1536 depends on SYS_HAS_CPU_VR41XX
1537 select CPU_SUPPORTS_32BIT_KERNEL
1538 select CPU_SUPPORTS_64BIT_KERNEL
1540 The options selects support for the NEC VR4100 series of processors.
1541 Only choose this option if you have one of these processors as a
1542 kernel built with this option will not run on any other type of
1543 processor or vice versa.
1547 depends on SYS_HAS_CPU_R4300
1548 select CPU_SUPPORTS_32BIT_KERNEL
1549 select CPU_SUPPORTS_64BIT_KERNEL
1551 MIPS Technologies R4300-series processors.
1555 depends on SYS_HAS_CPU_R4X00
1556 select CPU_SUPPORTS_32BIT_KERNEL
1557 select CPU_SUPPORTS_64BIT_KERNEL
1558 select CPU_SUPPORTS_HUGEPAGES
1560 MIPS Technologies R4000-series processors other than 4300, including
1561 the R4000, R4400, R4600, and 4700.
1565 depends on SYS_HAS_CPU_TX49XX
1566 select CPU_HAS_PREFETCH
1567 select CPU_SUPPORTS_32BIT_KERNEL
1568 select CPU_SUPPORTS_64BIT_KERNEL
1569 select CPU_SUPPORTS_HUGEPAGES
1573 depends on SYS_HAS_CPU_R5000
1574 select CPU_SUPPORTS_32BIT_KERNEL
1575 select CPU_SUPPORTS_64BIT_KERNEL
1576 select CPU_SUPPORTS_HUGEPAGES
1578 MIPS Technologies R5000-series processors other than the Nevada.
1582 depends on SYS_HAS_CPU_R5432
1583 select CPU_SUPPORTS_32BIT_KERNEL
1584 select CPU_SUPPORTS_64BIT_KERNEL
1585 select CPU_SUPPORTS_HUGEPAGES
1589 depends on SYS_HAS_CPU_R5500
1590 select CPU_SUPPORTS_32BIT_KERNEL
1591 select CPU_SUPPORTS_64BIT_KERNEL
1592 select CPU_SUPPORTS_HUGEPAGES
1594 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1599 depends on SYS_HAS_CPU_R6000
1600 select CPU_SUPPORTS_32BIT_KERNEL
1602 MIPS Technologies R6000 and R6000A series processors. Note these
1603 processors are extremely rare and the support for them is incomplete.
1607 depends on SYS_HAS_CPU_NEVADA
1608 select CPU_SUPPORTS_32BIT_KERNEL
1609 select CPU_SUPPORTS_64BIT_KERNEL
1610 select CPU_SUPPORTS_HUGEPAGES
1612 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1616 depends on SYS_HAS_CPU_R8000
1617 select CPU_HAS_PREFETCH
1618 select CPU_SUPPORTS_64BIT_KERNEL
1620 MIPS Technologies R8000 processors. Note these processors are
1621 uncommon and the support for them is incomplete.
1625 depends on SYS_HAS_CPU_R10000
1626 select CPU_HAS_PREFETCH
1627 select CPU_SUPPORTS_32BIT_KERNEL
1628 select CPU_SUPPORTS_64BIT_KERNEL
1629 select CPU_SUPPORTS_HIGHMEM
1630 select CPU_SUPPORTS_HUGEPAGES
1632 MIPS Technologies R10000-series processors.
1636 depends on SYS_HAS_CPU_RM7000
1637 select CPU_HAS_PREFETCH
1638 select CPU_SUPPORTS_32BIT_KERNEL
1639 select CPU_SUPPORTS_64BIT_KERNEL
1640 select CPU_SUPPORTS_HIGHMEM
1641 select CPU_SUPPORTS_HUGEPAGES
1645 depends on SYS_HAS_CPU_SB1
1646 select CPU_SUPPORTS_32BIT_KERNEL
1647 select CPU_SUPPORTS_64BIT_KERNEL
1648 select CPU_SUPPORTS_HIGHMEM
1649 select CPU_SUPPORTS_HUGEPAGES
1650 select WEAK_ORDERING
1652 config CPU_CAVIUM_OCTEON
1653 bool "Cavium Octeon processor"
1654 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1655 select CPU_HAS_PREFETCH
1656 select CPU_SUPPORTS_64BIT_KERNEL
1657 select WEAK_ORDERING
1658 select CPU_SUPPORTS_HIGHMEM
1659 select CPU_SUPPORTS_HUGEPAGES
1660 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1661 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1662 select MIPS_L1_CACHE_SHIFT_7
1664 The Cavium Octeon processor is a highly integrated chip containing
1665 many ethernet hardware widgets for networking tasks. The processor
1666 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1667 Full details can be found at http://www.caviumnetworks.com.
1670 bool "Broadcom BMIPS"
1671 depends on SYS_HAS_CPU_BMIPS
1673 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1674 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1675 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1676 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1677 select CPU_SUPPORTS_32BIT_KERNEL
1678 select DMA_NONCOHERENT
1680 select SWAP_IO_SPACE
1681 select WEAK_ORDERING
1682 select CPU_SUPPORTS_HIGHMEM
1683 select CPU_HAS_PREFETCH
1685 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1688 bool "Netlogic XLR SoC"
1689 depends on SYS_HAS_CPU_XLR
1690 select CPU_SUPPORTS_32BIT_KERNEL
1691 select CPU_SUPPORTS_64BIT_KERNEL
1692 select CPU_SUPPORTS_HIGHMEM
1693 select CPU_SUPPORTS_HUGEPAGES
1694 select WEAK_ORDERING
1695 select WEAK_REORDERING_BEYOND_LLSC
1697 Netlogic Microsystems XLR/XLS processors.
1700 bool "Netlogic XLP SoC"
1701 depends on SYS_HAS_CPU_XLP
1702 select CPU_SUPPORTS_32BIT_KERNEL
1703 select CPU_SUPPORTS_64BIT_KERNEL
1704 select CPU_SUPPORTS_HIGHMEM
1705 select WEAK_ORDERING
1706 select WEAK_REORDERING_BEYOND_LLSC
1707 select CPU_HAS_PREFETCH
1709 select CPU_SUPPORTS_HUGEPAGES
1710 select MIPS_ASID_BITS_VARIABLE
1712 Netlogic Microsystems XLP processors.
1715 config CPU_MIPS32_3_5_FEATURES
1716 bool "MIPS32 Release 3.5 Features"
1717 depends on SYS_HAS_CPU_MIPS32_R3_5
1718 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1720 Choose this option to build a kernel for release 2 or later of the
1721 MIPS32 architecture including features from the 3.5 release such as
1722 support for Enhanced Virtual Addressing (EVA).
1724 config CPU_MIPS32_3_5_EVA
1725 bool "Enhanced Virtual Addressing (EVA)"
1726 depends on CPU_MIPS32_3_5_FEATURES
1730 Choose this option if you want to enable the Enhanced Virtual
1731 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1732 One of its primary benefits is an increase in the maximum size
1733 of lowmem (up to 3GB). If unsure, say 'N' here.
1735 config CPU_MIPS32_R5_FEATURES
1736 bool "MIPS32 Release 5 Features"
1737 depends on SYS_HAS_CPU_MIPS32_R5
1738 depends on CPU_MIPS32_R2
1740 Choose this option to build a kernel for release 2 or later of the
1741 MIPS32 architecture including features from release 5 such as
1742 support for Extended Physical Addressing (XPA).
1744 config CPU_MIPS32_R5_XPA
1745 bool "Extended Physical Addressing (XPA)"
1746 depends on CPU_MIPS32_R5_FEATURES
1748 depends on !PAGE_SIZE_4KB
1749 depends on SYS_SUPPORTS_HIGHMEM
1752 select ARCH_PHYS_ADDR_T_64BIT
1755 Choose this option if you want to enable the Extended Physical
1756 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1757 benefit is to increase physical addressing equal to or greater
1758 than 40 bits. Note that this has the side effect of turning on
1759 64-bit addressing which in turn makes the PTEs 64-bit in size.
1760 If unsure, say 'N' here.
1763 config CPU_NOP_WORKAROUNDS
1766 config CPU_JUMP_WORKAROUNDS
1769 config CPU_LOONGSON2F_WORKAROUNDS
1770 bool "Loongson 2F Workarounds"
1772 select CPU_NOP_WORKAROUNDS
1773 select CPU_JUMP_WORKAROUNDS
1775 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1776 require workarounds. Without workarounds the system may hang
1777 unexpectedly. For more information please refer to the gas
1778 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1780 Loongson 2F03 and later have fixed these issues and no workarounds
1781 are needed. The workarounds have no significant side effect on them
1782 but may decrease the performance of the system so this option should
1783 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1786 If unsure, please say Y.
1787 endif # CPU_LOONGSON2F
1789 config SYS_SUPPORTS_ZBOOT
1791 select HAVE_KERNEL_GZIP
1792 select HAVE_KERNEL_BZIP2
1793 select HAVE_KERNEL_LZ4
1794 select HAVE_KERNEL_LZMA
1795 select HAVE_KERNEL_LZO
1796 select HAVE_KERNEL_XZ
1798 config SYS_SUPPORTS_ZBOOT_UART16550
1800 select SYS_SUPPORTS_ZBOOT
1802 config SYS_SUPPORTS_ZBOOT_UART_PROM
1804 select SYS_SUPPORTS_ZBOOT
1806 config CPU_LOONGSON2
1808 select CPU_SUPPORTS_32BIT_KERNEL
1809 select CPU_SUPPORTS_64BIT_KERNEL
1810 select CPU_SUPPORTS_HIGHMEM
1811 select CPU_SUPPORTS_HUGEPAGES
1813 config CPU_LOONGSON1
1817 select CPU_HAS_PREFETCH
1818 select CPU_SUPPORTS_32BIT_KERNEL
1819 select CPU_SUPPORTS_HIGHMEM
1820 select CPU_SUPPORTS_CPUFREQ
1822 config CPU_BMIPS32_3300
1823 select SMP_UP if SMP
1826 config CPU_BMIPS4350
1828 select SYS_SUPPORTS_SMP
1829 select SYS_SUPPORTS_HOTPLUG_CPU
1831 config CPU_BMIPS4380
1833 select MIPS_L1_CACHE_SHIFT_6
1834 select SYS_SUPPORTS_SMP
1835 select SYS_SUPPORTS_HOTPLUG_CPU
1838 config CPU_BMIPS5000
1840 select MIPS_CPU_SCACHE
1841 select MIPS_L1_CACHE_SHIFT_7
1842 select SYS_SUPPORTS_SMP
1843 select SYS_SUPPORTS_HOTPLUG_CPU
1846 config SYS_HAS_CPU_LOONGSON3
1848 select CPU_SUPPORTS_CPUFREQ
1851 config SYS_HAS_CPU_LOONGSON2E
1854 config SYS_HAS_CPU_LOONGSON2F
1856 select CPU_SUPPORTS_CPUFREQ
1857 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1858 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1860 config SYS_HAS_CPU_LOONGSON1B
1863 config SYS_HAS_CPU_MIPS32_R1
1866 config SYS_HAS_CPU_MIPS32_R2
1869 config SYS_HAS_CPU_MIPS32_R3_5
1872 config SYS_HAS_CPU_MIPS32_R5
1875 config SYS_HAS_CPU_MIPS32_R6
1878 config SYS_HAS_CPU_MIPS64_R1
1881 config SYS_HAS_CPU_MIPS64_R2
1884 config SYS_HAS_CPU_MIPS64_R6
1887 config SYS_HAS_CPU_R3000
1890 config SYS_HAS_CPU_TX39XX
1893 config SYS_HAS_CPU_VR41XX
1896 config SYS_HAS_CPU_R4300
1899 config SYS_HAS_CPU_R4X00
1902 config SYS_HAS_CPU_TX49XX
1905 config SYS_HAS_CPU_R5000
1908 config SYS_HAS_CPU_R5432
1911 config SYS_HAS_CPU_R5500
1914 config SYS_HAS_CPU_R6000
1917 config SYS_HAS_CPU_NEVADA
1920 config SYS_HAS_CPU_R8000
1923 config SYS_HAS_CPU_R10000
1926 config SYS_HAS_CPU_RM7000
1929 config SYS_HAS_CPU_SB1
1932 config SYS_HAS_CPU_CAVIUM_OCTEON
1935 config SYS_HAS_CPU_BMIPS
1938 config SYS_HAS_CPU_BMIPS32_3300
1940 select SYS_HAS_CPU_BMIPS
1942 config SYS_HAS_CPU_BMIPS4350
1944 select SYS_HAS_CPU_BMIPS
1946 config SYS_HAS_CPU_BMIPS4380
1948 select SYS_HAS_CPU_BMIPS
1950 config SYS_HAS_CPU_BMIPS5000
1952 select SYS_HAS_CPU_BMIPS
1954 config SYS_HAS_CPU_XLR
1957 config SYS_HAS_CPU_XLP
1960 config MIPS_MALTA_PM
1961 depends on MIPS_MALTA
1967 # CPU may reorder R->R, R->W, W->R, W->W
1968 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1970 config WEAK_ORDERING
1974 # CPU may reorder reads and writes beyond LL/SC
1975 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1977 config WEAK_REORDERING_BEYOND_LLSC
1982 # These two indicate any level of the MIPS32 and MIPS64 architecture
1986 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1990 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1993 # These two indicate the revision of the architecture, either Release 1 or Release 2
1997 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2001 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2007 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2009 select HAVE_ARCH_BITREVERSE
2010 select MIPS_ASID_BITS_VARIABLE
2019 config SYS_SUPPORTS_32BIT_KERNEL
2021 config SYS_SUPPORTS_64BIT_KERNEL
2023 config CPU_SUPPORTS_32BIT_KERNEL
2025 config CPU_SUPPORTS_64BIT_KERNEL
2027 config CPU_SUPPORTS_CPUFREQ
2029 config CPU_SUPPORTS_ADDRWINCFG
2031 config CPU_SUPPORTS_HUGEPAGES
2033 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2035 config MIPS_PGD_C0_CONTEXT
2037 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2040 # Set to y for ptrace access to watch registers.
2042 config HARDWARE_WATCHPOINTS
2044 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2049 prompt "Kernel code model"
2051 You should only select this option if you have a workload that
2052 actually benefits from 64-bit processing or if your machine has
2053 large memory. You will only be presented a single option in this
2054 menu if your system does not support both 32-bit and 64-bit kernels.
2057 bool "32-bit kernel"
2058 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2061 Select this option if you want to build a 32-bit kernel.
2064 bool "64-bit kernel"
2065 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2067 Select this option if you want to build a 64-bit kernel.
2072 bool "KVM Guest Kernel"
2073 depends on BROKEN_ON_SMP
2075 Select this option if building a guest kernel for KVM (Trap & Emulate)
2078 config KVM_GUEST_TIMER_FREQ
2079 int "Count/Compare Timer Frequency (MHz)"
2080 depends on KVM_GUEST
2083 Set this to non-zero if building a guest kernel for KVM to skip RTC
2084 emulation when determining guest CPU Frequency. Instead, the guest's
2085 timer frequency is specified directly.
2087 config MIPS_VA_BITS_48
2088 bool "48 bits virtual memory"
2091 Support a maximum at least 48 bits of application virtual memory.
2092 Default is 40 bits or less, depending on the CPU.
2093 This option result in a small memory overhead for page tables.
2094 This option is only supported with 16k and 64k page sizes.
2098 prompt "Kernel page size"
2099 default PAGE_SIZE_4KB
2101 config PAGE_SIZE_4KB
2103 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2104 depends on !MIPS_VA_BITS_48
2106 This option select the standard 4kB Linux page size. On some
2107 R3000-family processors this is the only available page size. Using
2108 4kB page size will minimize memory consumption and is therefore
2109 recommended for low memory systems.
2111 config PAGE_SIZE_8KB
2113 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2114 depends on !MIPS_VA_BITS_48
2116 Using 8kB page size will result in higher performance kernel at
2117 the price of higher memory consumption. This option is available
2118 only on R8000 and cnMIPS processors. Note that you will need a
2119 suitable Linux distribution to support this.
2121 config PAGE_SIZE_16KB
2123 depends on !CPU_R3000 && !CPU_TX39XX
2125 Using 16kB page size will result in higher performance kernel at
2126 the price of higher memory consumption. This option is available on
2127 all non-R3000 family processors. Note that you will need a suitable
2128 Linux distribution to support this.
2130 config PAGE_SIZE_32KB
2132 depends on CPU_CAVIUM_OCTEON
2133 depends on !MIPS_VA_BITS_48
2135 Using 32kB page size will result in higher performance kernel at
2136 the price of higher memory consumption. This option is available
2137 only on cnMIPS cores. Note that you will need a suitable Linux
2138 distribution to support this.
2140 config PAGE_SIZE_64KB
2142 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2144 Using 64kB page size will result in higher performance kernel at
2145 the price of higher memory consumption. This option is available on
2146 all non-R3000 family processor. Not that at the time of this
2147 writing this option is still high experimental.
2151 config FORCE_MAX_ZONEORDER
2152 int "Maximum zone order"
2153 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2154 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2155 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2156 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2157 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2158 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2162 The kernel memory allocator divides physically contiguous memory
2163 blocks into "zones", where each zone is a power of two number of
2164 pages. This option selects the largest power of two that the kernel
2165 keeps in the memory allocator. If you need to allocate very large
2166 blocks of physically contiguous memory, then you may need to
2167 increase this value.
2169 This config option is actually maximum order plus one. For example,
2170 a value of 11 means that the largest free memory block is 2^10 pages.
2172 The page size is not necessarily 4KB. Keep this in mind
2173 when choosing a value for this option.
2178 config IP22_CPU_SCACHE
2183 # Support for a MIPS32 / MIPS64 style S-caches
2185 config MIPS_CPU_SCACHE
2189 config R5000_CPU_SCACHE
2193 config RM7000_CPU_SCACHE
2197 config SIBYTE_DMA_PAGEOPS
2198 bool "Use DMA to clear/copy pages"
2201 Instead of using the CPU to zero and copy pages, use a Data Mover
2202 channel. These DMA channels are otherwise unused by the standard
2203 SiByte Linux port. Seems to give a small performance benefit.
2205 config CPU_HAS_PREFETCH
2208 config CPU_GENERIC_DUMP_TLB
2210 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2214 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2216 config CPU_R4K_CACHE_TLB
2218 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2221 bool "MIPS MT SMP support (1 TC on each available VPE)"
2222 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2223 select CPU_MIPSR2_IRQ_VI
2224 select CPU_MIPSR2_IRQ_EI
2229 select SYS_SUPPORTS_SMP
2230 select SYS_SUPPORTS_SCHED_SMT
2231 select MIPS_PERF_SHARED_TC_COUNTERS
2233 This is a kernel model which is known as SMVP. This is supported
2234 on cores with the MT ASE and uses the available VPEs to implement
2235 virtual processors which supports SMP. This is equivalent to the
2236 Intel Hyperthreading feature. For further information go to
2237 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2243 bool "SMT (multithreading) scheduler support"
2244 depends on SYS_SUPPORTS_SCHED_SMT
2247 SMT scheduler support improves the CPU scheduler's decision making
2248 when dealing with MIPS MT enabled cores at a cost of slightly
2249 increased overhead in some places. If unsure say N here.
2251 config SYS_SUPPORTS_SCHED_SMT
2254 config SYS_SUPPORTS_MULTITHREADING
2257 config MIPS_MT_FPAFF
2258 bool "Dynamic FPU affinity for FP-intensive threads"
2260 depends on MIPS_MT_SMP
2262 config MIPSR2_TO_R6_EMULATOR
2263 bool "MIPS R2-to-R6 emulator"
2264 depends on CPU_MIPSR6 && !SMP
2267 Choose this option if you want to run non-R6 MIPS userland code.
2268 Even if you say 'Y' here, the emulator will still be disabled by
2269 default. You can enable it using the 'mipsr2emu' kernel option.
2270 The only reason this is a build-time option is to save ~14K from the
2272 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2273 depends on SMP && CPU_MIPSR6
2275 config MIPS_VPE_LOADER
2276 bool "VPE loader support."
2277 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2278 select CPU_MIPSR2_IRQ_VI
2279 select CPU_MIPSR2_IRQ_EI
2282 Includes a loader for loading an elf relocatable object
2283 onto another VPE and running it.
2285 config MIPS_VPE_LOADER_CMP
2288 depends on MIPS_VPE_LOADER && MIPS_CMP
2290 config MIPS_VPE_LOADER_MT
2293 depends on MIPS_VPE_LOADER && !MIPS_CMP
2295 config MIPS_VPE_LOADER_TOM
2296 bool "Load VPE program into memory hidden from linux"
2297 depends on MIPS_VPE_LOADER
2300 The loader can use memory that is present but has been hidden from
2301 Linux using the kernel command line option "mem=xxMB". It's up to
2302 you to ensure the amount you put in the option and the space your
2303 program requires is less or equal to the amount physically present.
2305 config MIPS_VPE_APSP_API
2306 bool "Enable support for AP/SP API (RTLX)"
2307 depends on MIPS_VPE_LOADER
2310 config MIPS_VPE_APSP_API_CMP
2313 depends on MIPS_VPE_APSP_API && MIPS_CMP
2315 config MIPS_VPE_APSP_API_MT
2318 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2321 bool "MIPS CMP framework support (DEPRECATED)"
2322 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2325 select SYS_SUPPORTS_SMP
2326 select WEAK_ORDERING
2329 Select this if you are using a bootloader which implements the "CMP
2330 framework" protocol (ie. YAMON) and want your kernel to make use of
2331 its ability to start secondary CPUs.
2333 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2337 bool "MIPS Coherent Processing System support"
2338 depends on SYS_SUPPORTS_MIPS_CPS
2341 select MIPS_CPS_PM if HOTPLUG_CPU
2343 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2344 select SYS_SUPPORTS_HOTPLUG_CPU
2345 select SYS_SUPPORTS_SMP
2346 select WEAK_ORDERING
2348 Select this if you wish to run an SMP kernel across multiple cores
2349 within a MIPS Coherent Processing System. When this option is
2350 enabled the kernel will probe for other cores and boot them with
2351 no external assistance. It is safe to enable this when hardware
2352 support is unavailable.
2365 config SB1_PASS_2_WORKAROUNDS
2367 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2370 config SB1_PASS_2_1_WORKAROUNDS
2372 depends on CPU_SB1 && CPU_SB1_PASS_2
2376 config ARCH_PHYS_ADDR_T_64BIT
2380 prompt "SmartMIPS or microMIPS ASE support"
2382 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2385 Select this if you want neither microMIPS nor SmartMIPS support
2387 config CPU_HAS_SMARTMIPS
2388 depends on SYS_SUPPORTS_SMARTMIPS
2391 SmartMIPS is a extension of the MIPS32 architecture aimed at
2392 increased security at both hardware and software level for
2393 smartcards. Enabling this option will allow proper use of the
2394 SmartMIPS instructions by Linux applications. However a kernel with
2395 this option will not work on a MIPS core without SmartMIPS core. If
2396 you don't know you probably don't have SmartMIPS and should say N
2399 config CPU_MICROMIPS
2400 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2403 When this option is enabled the kernel will be built using the
2409 bool "Support for the MIPS SIMD Architecture"
2410 depends on CPU_SUPPORTS_MSA
2411 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2413 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2414 and a set of SIMD instructions to operate on them. When this option
2415 is enabled the kernel will support allocating & switching MSA
2416 vector register contexts. If you know that your kernel will only be
2417 running on CPUs which do not support MSA or that your userland will
2418 not be making use of it then you may wish to say N here to reduce
2419 the size & complexity of your kernel.
2433 # Vectored interrupt mode is an R2 feature
2435 config CPU_MIPSR2_IRQ_VI
2439 # Extended interrupt mode is an R2 feature
2441 config CPU_MIPSR2_IRQ_EI
2446 depends on !CPU_R3000
2452 config CPU_DADDI_WORKAROUNDS
2455 config CPU_R4000_WORKAROUNDS
2457 select CPU_R4400_WORKAROUNDS
2459 config CPU_R4400_WORKAROUNDS
2462 config MIPS_ASID_SHIFT
2464 default 6 if CPU_R3000 || CPU_TX39XX
2465 default 4 if CPU_R8000
2468 config MIPS_ASID_BITS
2470 default 0 if MIPS_ASID_BITS_VARIABLE
2471 default 6 if CPU_R3000 || CPU_TX39XX
2474 config MIPS_ASID_BITS_VARIABLE
2478 # - Highmem only makes sense for the 32-bit kernel.
2479 # - The current highmem code will only work properly on physically indexed
2480 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2481 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2482 # moment we protect the user and offer the highmem option only on machines
2483 # where it's known to be safe. This will not offer highmem on a few systems
2484 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2485 # indexed CPUs but we're playing safe.
2486 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2487 # know they might have memory configurations that could make use of highmem
2491 bool "High Memory Support"
2492 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2494 config CPU_SUPPORTS_HIGHMEM
2497 config SYS_SUPPORTS_HIGHMEM
2500 config SYS_SUPPORTS_SMARTMIPS
2503 config SYS_SUPPORTS_MICROMIPS
2506 config SYS_SUPPORTS_MIPS16
2509 This option must be set if a kernel might be executed on a MIPS16-
2510 enabled CPU even if MIPS16 is not actually being used. In other
2511 words, it makes the kernel MIPS16-tolerant.
2513 config CPU_SUPPORTS_MSA
2516 config ARCH_FLATMEM_ENABLE
2518 depends on !NUMA && !CPU_LOONGSON2
2520 config ARCH_DISCONTIGMEM_ENABLE
2522 default y if SGI_IP27
2524 Say Y to support efficient handling of discontiguous physical memory,
2525 for architectures which are either NUMA (Non-Uniform Memory Access)
2526 or have huge holes in the physical address space for other reasons.
2527 See <file:Documentation/vm/numa> for more.
2529 config ARCH_SPARSEMEM_ENABLE
2531 select SPARSEMEM_STATIC
2535 depends on SYS_SUPPORTS_NUMA
2537 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2538 Access). This option improves performance on systems with more
2539 than two nodes; on two node systems it is generally better to
2540 leave it disabled; on single node systems disable this option
2543 config SYS_SUPPORTS_NUMA
2547 bool "Relocatable kernel"
2548 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2550 This builds a kernel image that retains relocation information
2551 so it can be loaded someplace besides the default 1MB.
2552 The relocations make the kernel binary about 15% larger,
2553 but are discarded at runtime
2555 config RELOCATION_TABLE_SIZE
2556 hex "Relocation table size"
2557 depends on RELOCATABLE
2558 range 0x0 0x01000000
2559 default "0x00100000"
2561 A table of relocation data will be appended to the kernel binary
2562 and parsed at boot to fix up the relocated kernel.
2564 This option allows the amount of space reserved for the table to be
2565 adjusted, although the default of 1Mb should be ok in most cases.
2567 The build will fail and a valid size suggested if this is too small.
2569 If unsure, leave at the default value.
2571 config RANDOMIZE_BASE
2572 bool "Randomize the address of the kernel image"
2573 depends on RELOCATABLE
2575 Randomizes the physical and virtual address at which the
2576 kernel image is loaded, as a security feature that
2577 deters exploit attempts relying on knowledge of the location
2578 of kernel internals.
2580 Entropy is generated using any coprocessor 0 registers available.
2582 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2586 config RANDOMIZE_BASE_MAX_OFFSET
2587 hex "Maximum kASLR offset" if EXPERT
2588 depends on RANDOMIZE_BASE
2589 range 0x0 0x40000000 if EVA || 64BIT
2590 range 0x0 0x08000000
2591 default "0x01000000"
2593 When kASLR is active, this provides the maximum offset that will
2594 be applied to the kernel image. It should be set according to the
2595 amount of physical RAM available in the target system minus
2596 PHYSICAL_START and must be a power of 2.
2598 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2599 EVA or 64-bit. The default is 16Mb.
2604 depends on NEED_MULTIPLE_NODES
2606 config HW_PERF_EVENTS
2607 bool "Enable hardware performance counter support for perf events"
2608 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2611 Enable hardware performance counter support for perf events. If
2612 disabled, perf events will use software events only.
2617 bool "Multi-Processing support"
2618 depends on SYS_SUPPORTS_SMP
2620 This enables support for systems with more than one CPU. If you have
2621 a system with only one CPU, say N. If you have a system with more
2622 than one CPU, say Y.
2624 If you say N here, the kernel will run on uni- and multiprocessor
2625 machines, but will use only one CPU of a multiprocessor machine. If
2626 you say Y here, the kernel will run on many, but not all,
2627 uniprocessor machines. On a uniprocessor machine, the kernel
2628 will run faster if you say N here.
2630 People using multiprocessor machines who say Y here should also say
2631 Y to "Enhanced Real Time Clock Support", below.
2633 See also the SMP-HOWTO available at
2634 <http://www.tldp.org/docs.html#howto>.
2636 If you don't know what to do here, say N.
2641 config SYS_SUPPORTS_MIPS_CMP
2644 config SYS_SUPPORTS_MIPS_CPS
2647 config SYS_SUPPORTS_SMP
2650 config NR_CPUS_DEFAULT_4
2653 config NR_CPUS_DEFAULT_8
2656 config NR_CPUS_DEFAULT_16
2659 config NR_CPUS_DEFAULT_32
2662 config NR_CPUS_DEFAULT_64
2666 int "Maximum number of CPUs (2-256)"
2669 default "4" if NR_CPUS_DEFAULT_4
2670 default "8" if NR_CPUS_DEFAULT_8
2671 default "16" if NR_CPUS_DEFAULT_16
2672 default "32" if NR_CPUS_DEFAULT_32
2673 default "64" if NR_CPUS_DEFAULT_64
2675 This allows you to specify the maximum number of CPUs which this
2676 kernel will support. The maximum supported value is 32 for 32-bit
2677 kernel and 64 for 64-bit kernels; the minimum value which makes
2678 sense is 1 for Qemu (useful only for kernel debugging purposes)
2679 and 2 for all others.
2681 This is purely to save memory - each supported CPU adds
2682 approximately eight kilobytes to the kernel image. For best
2683 performance should round up your number of processors to the next
2686 config MIPS_PERF_SHARED_TC_COUNTERS
2690 # Timer Interrupt Frequency Configuration
2694 prompt "Timer frequency"
2697 Allows the configuration of the timer frequency.
2700 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2703 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2706 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2709 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2712 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2715 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2718 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2721 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2725 config SYS_SUPPORTS_24HZ
2728 config SYS_SUPPORTS_48HZ
2731 config SYS_SUPPORTS_100HZ
2734 config SYS_SUPPORTS_128HZ
2737 config SYS_SUPPORTS_250HZ
2740 config SYS_SUPPORTS_256HZ
2743 config SYS_SUPPORTS_1000HZ
2746 config SYS_SUPPORTS_1024HZ
2749 config SYS_SUPPORTS_ARBIT_HZ
2751 default y if !SYS_SUPPORTS_24HZ && \
2752 !SYS_SUPPORTS_48HZ && \
2753 !SYS_SUPPORTS_100HZ && \
2754 !SYS_SUPPORTS_128HZ && \
2755 !SYS_SUPPORTS_250HZ && \
2756 !SYS_SUPPORTS_256HZ && \
2757 !SYS_SUPPORTS_1000HZ && \
2758 !SYS_SUPPORTS_1024HZ
2764 default 100 if HZ_100
2765 default 128 if HZ_128
2766 default 250 if HZ_250
2767 default 256 if HZ_256
2768 default 1000 if HZ_1000
2769 default 1024 if HZ_1024
2772 def_bool HIGH_RES_TIMERS
2774 source "kernel/Kconfig.preempt"
2777 bool "Kexec system call"
2780 kexec is a system call that implements the ability to shutdown your
2781 current kernel, and to start another kernel. It is like a reboot
2782 but it is independent of the system firmware. And like a reboot
2783 you can start any kernel with it, not just Linux.
2785 The name comes from the similarity to the exec system call.
2787 It is an ongoing process to be certain the hardware in a machine
2788 is properly shutdown, so do not be surprised if this code does not
2789 initially work for you. As of this writing the exact hardware
2790 interface is strongly in flux, so no good recommendation can be
2794 bool "Kernel crash dumps"
2796 Generate crash dump after being started by kexec.
2797 This should be normally only set in special crash dump kernels
2798 which are loaded in the main kernel with kexec-tools into
2799 a specially reserved region and then later executed after
2800 a crash by kdump/kexec. The crash dump kernel must be compiled
2801 to a memory address not used by the main kernel or firmware using
2804 config PHYSICAL_START
2805 hex "Physical address where the kernel is loaded"
2806 default "0xffffffff84000000" if 64BIT
2807 default "0x84000000" if 32BIT
2808 depends on CRASH_DUMP
2810 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2811 If you plan to use kernel for capturing the crash dump change
2812 this value to start of the reserved region (the "X" value as
2813 specified in the "crashkernel=YM@XM" command line boot parameter
2814 passed to the panic-ed kernel).
2817 bool "Enable seccomp to safely compute untrusted bytecode"
2821 This kernel feature is useful for number crunching applications
2822 that may need to compute untrusted bytecode during their
2823 execution. By using pipes or other transports made available to
2824 the process as file descriptors supporting the read/write
2825 syscalls, it's possible to isolate those applications in
2826 their own address space using seccomp. Once seccomp is
2827 enabled via /proc/<pid>/seccomp, it cannot be disabled
2828 and the task is only allowed to execute a few safe syscalls
2829 defined by each seccomp mode.
2831 If unsure, say Y. Only embedded should say N here.
2833 config MIPS_O32_FP64_SUPPORT
2834 bool "Support for O32 binaries using 64-bit FP"
2835 depends on 32BIT || MIPS32_O32
2837 When this is enabled, the kernel will support use of 64-bit floating
2838 point registers with binaries using the O32 ABI along with the
2839 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2840 32-bit MIPS systems this support is at the cost of increasing the
2841 size and complexity of the compiled FPU emulator. Thus if you are
2842 running a MIPS32 system and know that none of your userland binaries
2843 will require 64-bit floating point, you may wish to reduce the size
2844 of your kernel & potentially improve FP emulation performance by
2847 Although binutils currently supports use of this flag the details
2848 concerning its effect upon the O32 ABI in userland are still being
2849 worked on. In order to avoid userland becoming dependant upon current
2850 behaviour before the details have been finalised, this option should
2851 be considered experimental and only enabled by those working upon
2859 select OF_EARLY_FLATTREE
2866 prompt "Kernel appended dtb support" if USE_OF
2867 default MIPS_NO_APPENDED_DTB
2869 config MIPS_NO_APPENDED_DTB
2872 Do not enable appended dtb support.
2874 config MIPS_ELF_APPENDED_DTB
2877 With this option, the boot code will look for a device tree binary
2878 DTB) included in the vmlinux ELF section .appended_dtb. By default
2879 it is empty and the DTB can be appended using binutils command
2882 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2884 This is meant as a backward compatiblity convenience for those
2885 systems with a bootloader that can't be upgraded to accommodate
2886 the documented boot protocol using a device tree.
2888 config MIPS_RAW_APPENDED_DTB
2891 With this option, the boot code will look for a device tree binary
2892 DTB) appended to raw vmlinux.bin (without decompressor).
2893 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2895 This is meant as a backward compatibility convenience for those
2896 systems with a bootloader that can't be upgraded to accommodate
2897 the documented boot protocol using a device tree.
2899 Beware that there is very little in terms of protection against
2900 this option being confused by leftover garbage in memory that might
2901 look like a DTB header after a reboot if no actual DTB is appended
2902 to vmlinux.bin. Do not leave this option active in a production kernel
2903 if you don't intend to always append a DTB.
2905 config MIPS_ZBOOT_APPENDED_DTB
2907 depends on SYS_SUPPORTS_ZBOOT
2909 With this option, the boot code will look for a device tree binary
2910 DTB) appended to raw vmlinuz.bin (with decompressor).
2911 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2913 This is meant as a backward compatibility convenience for those
2914 systems with a bootloader that can't be upgraded to accommodate
2915 the documented boot protocol using a device tree.
2917 Beware that there is very little in terms of protection against
2918 this option being confused by leftover garbage in memory that might
2919 look like a DTB header after a reboot if no actual DTB is appended
2920 to vmlinuz.bin. Do not leave this option active in a production kernel
2921 if you don't intend to always append a DTB.
2925 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2926 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2927 !MIPS_MALTA && !MIPS_SEAD3 && \
2929 default MIPS_CMDLINE_FROM_BOOTLOADER
2931 config MIPS_CMDLINE_FROM_DTB
2933 bool "Dtb kernel arguments if available"
2935 config MIPS_CMDLINE_DTB_EXTEND
2937 bool "Extend dtb kernel arguments with bootloader arguments"
2939 config MIPS_CMDLINE_FROM_BOOTLOADER
2940 bool "Bootloader kernel arguments if available"
2942 config MIPS_CMDLINE_BUILTIN_EXTEND
2943 depends on CMDLINE_BOOL
2944 bool "Extend builtin kernel arguments with bootloader arguments"
2949 config LOCKDEP_SUPPORT
2953 config STACKTRACE_SUPPORT
2957 config HAVE_LATENCYTOP_SUPPORT
2961 config PGTABLE_LEVELS
2963 default 3 if 64BIT && !PAGE_SIZE_64KB
2966 source "init/Kconfig"
2968 source "kernel/Kconfig.freezer"
2970 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2978 bool "Support for PCI controller"
2979 depends on HW_HAS_PCI
2981 select NO_GENERIC_PCI_IOPORT_MAP
2983 Find out whether you have a PCI motherboard. PCI is the name of a
2984 bus system, i.e. the way the CPU talks to the other stuff inside
2985 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2989 bool "Support for HT-linked PCI"
2991 depends on CPU_LOONGSON3
2995 Loongson family machines use Hyper-Transport bus for inter-core
2996 connection and device connection. The PCI bus is a subordinate
2997 linked at HT. Choose Y for Loongson-3 based machines.
3002 source "drivers/pci/Kconfig"
3005 # ISA support is now enabled via select. Too many systems still have the one
3006 # or other ISA chip on the board that users don't know about so don't expect
3007 # users to choose the right thing ...
3014 depends on HW_HAS_EISA
3016 select GENERIC_ISA_DMA
3018 The Extended Industry Standard Architecture (EISA) bus was
3019 developed as an open alternative to the IBM MicroChannel bus.
3021 The EISA bus provided some of the features of the IBM MicroChannel
3022 bus while maintaining backward compatibility with cards made for
3023 the older ISA bus. The EISA bus saw limited use between 1988 and
3024 1995 when it was made obsolete by the PCI bus.
3026 Say Y here if you are building a kernel for an EISA-based machine.
3030 source "drivers/eisa/Kconfig"
3033 bool "TURBOchannel support"
3034 depends on MACH_DECSTATION
3036 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3037 processors. TURBOchannel programming specifications are available
3039 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3041 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3042 Linux driver support status is documented at:
3043 <http://www.linux-mips.org/wiki/DECstation>
3053 select MIPS_EXTERNAL_TIMER
3061 source "drivers/pcmcia/Kconfig"
3064 tristate "RapidIO support"
3068 If you say Y here, the kernel will include drivers and
3069 infrastructure code to support RapidIO interconnect devices.
3071 source "drivers/rapidio/Kconfig"
3075 menu "Executable file formats"
3077 source "fs/Kconfig.binfmt"
3082 config MIPS32_COMPAT
3088 config SYSVIPC_COMPAT
3092 bool "Kernel support for o32 binaries"
3094 select ARCH_WANT_OLD_COMPAT_IPC
3096 select MIPS32_COMPAT
3097 select SYSVIPC_COMPAT if SYSVIPC
3099 Select this option if you want to run o32 binaries. These are pure
3100 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3101 existing binaries are in this format.
3106 bool "Kernel support for n32 binaries"
3109 select MIPS32_COMPAT
3110 select SYSVIPC_COMPAT if SYSVIPC
3112 Select this option if you want to run n32 binaries. These are
3113 64-bit binaries using 32-bit quantities for addressing and certain
3114 data that would normally be 64-bit. They are used in special
3121 default y if MIPS32_O32 || MIPS32_N32
3125 menu "Power management options"
3127 config ARCH_HIBERNATION_POSSIBLE
3129 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3131 config ARCH_SUSPEND_POSSIBLE
3133 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3135 source "kernel/power/Kconfig"
3139 config MIPS_EXTERNAL_TIMER
3142 menu "CPU Power Management"
3144 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3145 source "drivers/cpufreq/Kconfig"
3148 source "drivers/cpuidle/Kconfig"
3152 source "net/Kconfig"
3154 source "drivers/Kconfig"
3156 source "drivers/firmware/Kconfig"
3160 source "arch/mips/Kconfig.debug"
3162 source "security/Kconfig"
3164 source "crypto/Kconfig"
3166 source "lib/Kconfig"
3168 source "arch/mips/kvm/Kconfig"