4 select ARCH_SUPPORTS_UPROBES
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
8 select ARCH_USE_BUILTIN_BSWAP
9 select HAVE_CONTEXT_TRACKING
10 select HAVE_GENERIC_DMA_COHERENT
13 select HAVE_PERF_EVENTS
14 select PERF_USE_VMALLOC
16 select HAVE_ARCH_SECCOMP_FILTER
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_CBPF_JIT if !CPU_MICROMIPS
19 select HAVE_FUNCTION_TRACER
20 select HAVE_DYNAMIC_FTRACE
21 select HAVE_FTRACE_MCOUNT_RECORD
22 select HAVE_C_RECORDMCOUNT
23 select HAVE_FUNCTION_GRAPH_TRACER
25 select HAVE_KRETPROBES
26 select HAVE_SYSCALL_TRACEPOINTS
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_SYSCALL_TRACEPOINTS
29 select ARCH_HAS_ELF_RANDOMIZE
30 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
31 select RTC_LIB if !MACH_LOONGSON64
32 select GENERIC_ATOMIC64 if !64BIT
33 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
34 select HAVE_DMA_CONTIGUOUS
35 select HAVE_DMA_API_DEBUG
36 select GENERIC_IRQ_PROBE
37 select GENERIC_IRQ_SHOW
38 select GENERIC_PCI_IOMAP
39 select HAVE_ARCH_JUMP_LABEL
40 select ARCH_WANT_IPC_PARSE_VERSION
41 select IRQ_FORCED_THREADING
43 select HAVE_MEMBLOCK_NODE_MAP
44 select ARCH_DISCARD_MEMBLOCK
45 select GENERIC_SMP_IDLE_THREAD
46 select BUILDTIME_EXTABLE_SORT
47 select GENERIC_CLOCKEVENTS
48 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
49 select GENERIC_CMOS_UPDATE
50 select HAVE_MOD_ARCH_SPECIFIC
53 select MODULES_USE_ELF_REL if MODULES
54 select MODULES_USE_ELF_RELA if MODULES && 64BIT
55 select CLONE_BACKWARDS
56 select HAVE_DEBUG_STACKOVERFLOW
57 select HAVE_CC_STACKPROTECTOR
58 select CPU_PM if CPU_IDLE
59 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
60 select ARCH_BINFMT_ELF_STATE
61 select SYSCTL_EXCEPTION_TRACE
62 select HAVE_VIRT_CPU_ACCOUNTING_GEN
63 select HAVE_IRQ_TIME_ACCOUNTING
64 select GENERIC_TIME_VSYSCALL
65 select ARCH_CLOCKSOURCE_DATA
66 select HANDLE_DOMAIN_IRQ
67 select HAVE_EXIT_THREAD
69 menu "Machine selection"
76 bool "Alchemy processor based machines"
77 select ARCH_PHYS_ADDR_T_64BIT
81 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
82 select SYS_HAS_CPU_MIPS32_R1
83 select SYS_SUPPORTS_32BIT_KERNEL
84 select SYS_SUPPORTS_APM_EMULATION
86 select SYS_SUPPORTS_ZBOOT
90 bool "Texas Instruments AR7"
92 select DMA_NONCOHERENT
98 select SYS_HAS_CPU_MIPS32_R1
99 select SYS_HAS_EARLY_PRINTK
100 select SYS_SUPPORTS_32BIT_KERNEL
101 select SYS_SUPPORTS_LITTLE_ENDIAN
102 select SYS_SUPPORTS_MIPS16
103 select SYS_SUPPORTS_ZBOOT_UART16550
108 Support for the Texas Instruments AR7 System-on-a-Chip
109 family: TNETD7100, 7200 and 7300.
112 bool "Atheros AR231x/AR531x SoC support"
115 select DMA_NONCOHERENT
118 select SYS_HAS_CPU_MIPS32_R1
119 select SYS_SUPPORTS_BIG_ENDIAN
120 select SYS_SUPPORTS_32BIT_KERNEL
121 select SYS_HAS_EARLY_PRINTK
123 Support for Atheros AR231x and Atheros AR531x based boards
126 bool "Atheros AR71XX/AR724X/AR913X based boards"
127 select ARCH_HAS_RESET_CONTROLLER
131 select DMA_NONCOHERENT
138 select SYS_HAS_CPU_MIPS32_R2
139 select SYS_HAS_EARLY_PRINTK
140 select SYS_SUPPORTS_32BIT_KERNEL
141 select SYS_SUPPORTS_BIG_ENDIAN
142 select SYS_SUPPORTS_MIPS16
143 select SYS_SUPPORTS_ZBOOT_UART_PROM
146 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
149 bool "Broadcom Generic BMIPS kernel"
151 select NO_EXCEPT_FILL
157 select BCM6345_L1_IRQ
158 select BCM7038_L1_IRQ
159 select BCM7120_L2_IRQ
160 select BRCMSTB_L2_IRQ
162 select DMA_NONCOHERENT
163 select SYS_SUPPORTS_32BIT_KERNEL
164 select SYS_SUPPORTS_LITTLE_ENDIAN
165 select SYS_SUPPORTS_BIG_ENDIAN
166 select SYS_SUPPORTS_HIGHMEM
167 select SYS_HAS_CPU_BMIPS32_3300
168 select SYS_HAS_CPU_BMIPS4350
169 select SYS_HAS_CPU_BMIPS4380
170 select SYS_HAS_CPU_BMIPS5000
172 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
173 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
174 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
175 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
177 Build a generic DT-based kernel image that boots on select
178 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
179 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
180 must be set appropriately for your board.
183 bool "Broadcom BCM47XX based boards"
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
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
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
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"
385 select CLKSRC_MIPS_GIC
388 select DMA_NONCOHERENT
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"
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
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
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
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
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
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
1114 config SYS_SUPPORTS_HOTPLUG_CPU
1117 config MIPS_BONITO64
1132 config NO_IOPORT_MAP
1138 config GENERIC_ISA_DMA
1140 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1143 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1145 select GENERIC_ISA_DMA
1150 config HOLES_IN_ZONE
1153 config SYS_SUPPORTS_RELOCATABLE
1156 Selected if the platform supports relocating the kernel.
1157 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1158 to allow access to command line and entropy sources.
1161 # Endianness selection. Sufficiently obscure so many users don't know what to
1162 # answer,so we try hard to limit the available choices. Also the use of a
1163 # choice statement should be more obvious to the user.
1166 prompt "Endianness selection"
1168 Some MIPS machines can be configured for either little or big endian
1169 byte order. These modes require different kernels and a different
1170 Linux distribution. In general there is one preferred byteorder for a
1171 particular system but some systems are just as commonly used in the
1172 one or the other endianness.
1174 config CPU_BIG_ENDIAN
1176 depends on SYS_SUPPORTS_BIG_ENDIAN
1178 config CPU_LITTLE_ENDIAN
1179 bool "Little endian"
1180 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1187 config SYS_SUPPORTS_APM_EMULATION
1190 config SYS_SUPPORTS_BIG_ENDIAN
1193 config SYS_SUPPORTS_LITTLE_ENDIAN
1196 config SYS_SUPPORTS_HUGETLBFS
1198 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1201 config MIPS_HUGE_TLB_SUPPORT
1202 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1219 config PCI_GT64XXX_PCI0
1222 config NO_EXCEPT_FILL
1229 select DMA_NONCOHERENT
1231 select SWAP_IO_SPACE
1232 select SYS_HAS_CPU_R5500
1233 select SYS_SUPPORTS_32BIT_KERNEL
1234 select SYS_SUPPORTS_64BIT_KERNEL
1235 select SYS_SUPPORTS_BIG_ENDIAN
1242 select DMA_NONCOHERENT
1243 select SYS_HAS_CPU_MIPS32_R2
1244 select SYS_SUPPORTS_32BIT_KERNEL
1245 select SYS_SUPPORTS_LITTLE_ENDIAN
1246 select SYS_SUPPORTS_BIG_ENDIAN
1247 select SYS_SUPPORTS_MIPS16
1248 select CPU_MIPSR2_IRQ_VI
1257 config SWAP_IO_SPACE
1260 config SGI_HAS_INDYDOG
1272 config SGI_HAS_ZILOG
1275 config SGI_HAS_I8042
1278 config DEFAULT_SGI_PARTITION
1290 config MIPS_L1_CACHE_SHIFT_4
1293 config MIPS_L1_CACHE_SHIFT_5
1296 config MIPS_L1_CACHE_SHIFT_6
1299 config MIPS_L1_CACHE_SHIFT_7
1302 config MIPS_L1_CACHE_SHIFT
1304 default "7" if MIPS_L1_CACHE_SHIFT_7
1305 default "6" if MIPS_L1_CACHE_SHIFT_6
1306 default "5" if MIPS_L1_CACHE_SHIFT_5
1307 default "4" if MIPS_L1_CACHE_SHIFT_4
1310 config HAVE_STD_PC_SERIAL_PORT
1314 bool "ARC console support"
1315 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1319 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1324 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1333 menu "CPU selection"
1339 config CPU_LOONGSON3
1340 bool "Loongson 3 CPU"
1341 depends on SYS_HAS_CPU_LOONGSON3
1342 select CPU_SUPPORTS_64BIT_KERNEL
1343 select CPU_SUPPORTS_HIGHMEM
1344 select CPU_SUPPORTS_HUGEPAGES
1345 select WEAK_ORDERING
1346 select WEAK_REORDERING_BEYOND_LLSC
1347 select MIPS_PGD_C0_CONTEXT
1350 The Loongson 3 processor implements the MIPS64R2 instruction
1351 set with many extensions.
1353 config LOONGSON3_ENHANCEMENT
1354 bool "New Loongson 3 CPU Enhancements"
1357 select CPU_HAS_PREFETCH
1358 depends on CPU_LOONGSON3
1360 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1361 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1362 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1363 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1364 Fast TLB refill support, etc.
1366 This option enable those enhancements which are not probed at run
1367 time. If you want a generic kernel to run on all Loongson 3 machines,
1368 please say 'N' here. If you want a high-performance kernel to run on
1369 new Loongson 3 machines only, please say 'Y' here.
1371 config CPU_LOONGSON2E
1373 depends on SYS_HAS_CPU_LOONGSON2E
1374 select CPU_LOONGSON2
1376 The Loongson 2E processor implements the MIPS III instruction set
1377 with many extensions.
1379 It has an internal FPGA northbridge, which is compatible to
1382 config CPU_LOONGSON2F
1384 depends on SYS_HAS_CPU_LOONGSON2F
1385 select CPU_LOONGSON2
1388 The Loongson 2F processor implements the MIPS III instruction set
1389 with many extensions.
1391 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1392 have a similar programming interface with FPGA northbridge used in
1395 config CPU_LOONGSON1B
1397 depends on SYS_HAS_CPU_LOONGSON1B
1398 select CPU_LOONGSON1
1399 select LEDS_GPIO_REGISTER
1401 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1402 release 2 instruction set.
1404 config CPU_MIPS32_R1
1405 bool "MIPS32 Release 1"
1406 depends on SYS_HAS_CPU_MIPS32_R1
1407 select CPU_HAS_PREFETCH
1408 select CPU_SUPPORTS_32BIT_KERNEL
1409 select CPU_SUPPORTS_HIGHMEM
1411 Choose this option to build a kernel for release 1 or later of the
1412 MIPS32 architecture. Most modern embedded systems with a 32-bit
1413 MIPS processor are based on a MIPS32 processor. If you know the
1414 specific type of processor in your system, choose those that one
1415 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1416 Release 2 of the MIPS32 architecture is available since several
1417 years so chances are you even have a MIPS32 Release 2 processor
1418 in which case you should choose CPU_MIPS32_R2 instead for better
1421 config CPU_MIPS32_R2
1422 bool "MIPS32 Release 2"
1423 depends on SYS_HAS_CPU_MIPS32_R2
1424 select CPU_HAS_PREFETCH
1425 select CPU_SUPPORTS_32BIT_KERNEL
1426 select CPU_SUPPORTS_HIGHMEM
1427 select CPU_SUPPORTS_MSA
1430 Choose this option to build a kernel for release 2 or later of the
1431 MIPS32 architecture. Most modern embedded systems with a 32-bit
1432 MIPS processor are based on a MIPS32 processor. If you know the
1433 specific type of processor in your system, choose those that one
1434 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1436 config CPU_MIPS32_R6
1437 bool "MIPS32 Release 6"
1438 depends on SYS_HAS_CPU_MIPS32_R6
1439 select CPU_HAS_PREFETCH
1440 select CPU_SUPPORTS_32BIT_KERNEL
1441 select CPU_SUPPORTS_HIGHMEM
1442 select CPU_SUPPORTS_MSA
1445 select MIPS_O32_FP64_SUPPORT
1447 Choose this option to build a kernel for release 6 or later of the
1448 MIPS32 architecture. New MIPS processors, starting with the Warrior
1449 family, are based on a MIPS32r6 processor. If you own an older
1450 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1452 config CPU_MIPS64_R1
1453 bool "MIPS64 Release 1"
1454 depends on SYS_HAS_CPU_MIPS64_R1
1455 select CPU_HAS_PREFETCH
1456 select CPU_SUPPORTS_32BIT_KERNEL
1457 select CPU_SUPPORTS_64BIT_KERNEL
1458 select CPU_SUPPORTS_HIGHMEM
1459 select CPU_SUPPORTS_HUGEPAGES
1461 Choose this option to build a kernel for release 1 or later of the
1462 MIPS64 architecture. Many modern embedded systems with a 64-bit
1463 MIPS processor are based on a MIPS64 processor. If you know the
1464 specific type of processor in your system, choose those that one
1465 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1466 Release 2 of the MIPS64 architecture is available since several
1467 years so chances are you even have a MIPS64 Release 2 processor
1468 in which case you should choose CPU_MIPS64_R2 instead for better
1471 config CPU_MIPS64_R2
1472 bool "MIPS64 Release 2"
1473 depends on SYS_HAS_CPU_MIPS64_R2
1474 select CPU_HAS_PREFETCH
1475 select CPU_SUPPORTS_32BIT_KERNEL
1476 select CPU_SUPPORTS_64BIT_KERNEL
1477 select CPU_SUPPORTS_HIGHMEM
1478 select CPU_SUPPORTS_HUGEPAGES
1479 select CPU_SUPPORTS_MSA
1481 Choose this option to build a kernel for release 2 or later of the
1482 MIPS64 architecture. Many modern embedded systems with a 64-bit
1483 MIPS processor are based on a MIPS64 processor. If you know the
1484 specific type of processor in your system, choose those that one
1485 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1487 config CPU_MIPS64_R6
1488 bool "MIPS64 Release 6"
1489 depends on SYS_HAS_CPU_MIPS64_R6
1490 select CPU_HAS_PREFETCH
1491 select CPU_SUPPORTS_32BIT_KERNEL
1492 select CPU_SUPPORTS_64BIT_KERNEL
1493 select CPU_SUPPORTS_HIGHMEM
1494 select CPU_SUPPORTS_MSA
1496 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1498 Choose this option to build a kernel for release 6 or later of the
1499 MIPS64 architecture. New MIPS processors, starting with the Warrior
1500 family, are based on a MIPS64r6 processor. If you own an older
1501 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1505 depends on SYS_HAS_CPU_R3000
1507 select CPU_SUPPORTS_32BIT_KERNEL
1508 select CPU_SUPPORTS_HIGHMEM
1510 Please make sure to pick the right CPU type. Linux/MIPS is not
1511 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1512 *not* work on R4000 machines and vice versa. However, since most
1513 of the supported machines have an R4000 (or similar) CPU, R4x00
1514 might be a safe bet. If the resulting kernel does not work,
1515 try to recompile with R3000.
1519 depends on SYS_HAS_CPU_TX39XX
1520 select CPU_SUPPORTS_32BIT_KERNEL
1524 depends on SYS_HAS_CPU_VR41XX
1525 select CPU_SUPPORTS_32BIT_KERNEL
1526 select CPU_SUPPORTS_64BIT_KERNEL
1528 The options selects support for the NEC VR4100 series of processors.
1529 Only choose this option if you have one of these processors as a
1530 kernel built with this option will not run on any other type of
1531 processor or vice versa.
1535 depends on SYS_HAS_CPU_R4300
1536 select CPU_SUPPORTS_32BIT_KERNEL
1537 select CPU_SUPPORTS_64BIT_KERNEL
1539 MIPS Technologies R4300-series processors.
1543 depends on SYS_HAS_CPU_R4X00
1544 select CPU_SUPPORTS_32BIT_KERNEL
1545 select CPU_SUPPORTS_64BIT_KERNEL
1546 select CPU_SUPPORTS_HUGEPAGES
1548 MIPS Technologies R4000-series processors other than 4300, including
1549 the R4000, R4400, R4600, and 4700.
1553 depends on SYS_HAS_CPU_TX49XX
1554 select CPU_HAS_PREFETCH
1555 select CPU_SUPPORTS_32BIT_KERNEL
1556 select CPU_SUPPORTS_64BIT_KERNEL
1557 select CPU_SUPPORTS_HUGEPAGES
1561 depends on SYS_HAS_CPU_R5000
1562 select CPU_SUPPORTS_32BIT_KERNEL
1563 select CPU_SUPPORTS_64BIT_KERNEL
1564 select CPU_SUPPORTS_HUGEPAGES
1566 MIPS Technologies R5000-series processors other than the Nevada.
1570 depends on SYS_HAS_CPU_R5432
1571 select CPU_SUPPORTS_32BIT_KERNEL
1572 select CPU_SUPPORTS_64BIT_KERNEL
1573 select CPU_SUPPORTS_HUGEPAGES
1577 depends on SYS_HAS_CPU_R5500
1578 select CPU_SUPPORTS_32BIT_KERNEL
1579 select CPU_SUPPORTS_64BIT_KERNEL
1580 select CPU_SUPPORTS_HUGEPAGES
1582 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1587 depends on SYS_HAS_CPU_R6000
1588 select CPU_SUPPORTS_32BIT_KERNEL
1590 MIPS Technologies R6000 and R6000A series processors. Note these
1591 processors are extremely rare and the support for them is incomplete.
1595 depends on SYS_HAS_CPU_NEVADA
1596 select CPU_SUPPORTS_32BIT_KERNEL
1597 select CPU_SUPPORTS_64BIT_KERNEL
1598 select CPU_SUPPORTS_HUGEPAGES
1600 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1604 depends on SYS_HAS_CPU_R8000
1605 select CPU_HAS_PREFETCH
1606 select CPU_SUPPORTS_64BIT_KERNEL
1608 MIPS Technologies R8000 processors. Note these processors are
1609 uncommon and the support for them is incomplete.
1613 depends on SYS_HAS_CPU_R10000
1614 select CPU_HAS_PREFETCH
1615 select CPU_SUPPORTS_32BIT_KERNEL
1616 select CPU_SUPPORTS_64BIT_KERNEL
1617 select CPU_SUPPORTS_HIGHMEM
1618 select CPU_SUPPORTS_HUGEPAGES
1620 MIPS Technologies R10000-series processors.
1624 depends on SYS_HAS_CPU_RM7000
1625 select CPU_HAS_PREFETCH
1626 select CPU_SUPPORTS_32BIT_KERNEL
1627 select CPU_SUPPORTS_64BIT_KERNEL
1628 select CPU_SUPPORTS_HIGHMEM
1629 select CPU_SUPPORTS_HUGEPAGES
1633 depends on SYS_HAS_CPU_SB1
1634 select CPU_SUPPORTS_32BIT_KERNEL
1635 select CPU_SUPPORTS_64BIT_KERNEL
1636 select CPU_SUPPORTS_HIGHMEM
1637 select CPU_SUPPORTS_HUGEPAGES
1638 select WEAK_ORDERING
1640 config CPU_CAVIUM_OCTEON
1641 bool "Cavium Octeon processor"
1642 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1643 select CPU_HAS_PREFETCH
1644 select CPU_SUPPORTS_64BIT_KERNEL
1645 select WEAK_ORDERING
1646 select CPU_SUPPORTS_HIGHMEM
1647 select CPU_SUPPORTS_HUGEPAGES
1648 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1649 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1650 select MIPS_L1_CACHE_SHIFT_7
1652 The Cavium Octeon processor is a highly integrated chip containing
1653 many ethernet hardware widgets for networking tasks. The processor
1654 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1655 Full details can be found at http://www.caviumnetworks.com.
1658 bool "Broadcom BMIPS"
1659 depends on SYS_HAS_CPU_BMIPS
1661 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1662 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1663 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1664 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1665 select CPU_SUPPORTS_32BIT_KERNEL
1666 select DMA_NONCOHERENT
1668 select SWAP_IO_SPACE
1669 select WEAK_ORDERING
1670 select CPU_SUPPORTS_HIGHMEM
1671 select CPU_HAS_PREFETCH
1673 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1676 bool "Netlogic XLR SoC"
1677 depends on SYS_HAS_CPU_XLR
1678 select CPU_SUPPORTS_32BIT_KERNEL
1679 select CPU_SUPPORTS_64BIT_KERNEL
1680 select CPU_SUPPORTS_HIGHMEM
1681 select CPU_SUPPORTS_HUGEPAGES
1682 select WEAK_ORDERING
1683 select WEAK_REORDERING_BEYOND_LLSC
1685 Netlogic Microsystems XLR/XLS processors.
1688 bool "Netlogic XLP SoC"
1689 depends on SYS_HAS_CPU_XLP
1690 select CPU_SUPPORTS_32BIT_KERNEL
1691 select CPU_SUPPORTS_64BIT_KERNEL
1692 select CPU_SUPPORTS_HIGHMEM
1693 select WEAK_ORDERING
1694 select WEAK_REORDERING_BEYOND_LLSC
1695 select CPU_HAS_PREFETCH
1697 select CPU_SUPPORTS_HUGEPAGES
1698 select MIPS_ASID_BITS_VARIABLE
1700 Netlogic Microsystems XLP processors.
1703 config CPU_MIPS32_3_5_FEATURES
1704 bool "MIPS32 Release 3.5 Features"
1705 depends on SYS_HAS_CPU_MIPS32_R3_5
1706 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1708 Choose this option to build a kernel for release 2 or later of the
1709 MIPS32 architecture including features from the 3.5 release such as
1710 support for Enhanced Virtual Addressing (EVA).
1712 config CPU_MIPS32_3_5_EVA
1713 bool "Enhanced Virtual Addressing (EVA)"
1714 depends on CPU_MIPS32_3_5_FEATURES
1718 Choose this option if you want to enable the Enhanced Virtual
1719 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1720 One of its primary benefits is an increase in the maximum size
1721 of lowmem (up to 3GB). If unsure, say 'N' here.
1723 config CPU_MIPS32_R5_FEATURES
1724 bool "MIPS32 Release 5 Features"
1725 depends on SYS_HAS_CPU_MIPS32_R5
1726 depends on CPU_MIPS32_R2
1728 Choose this option to build a kernel for release 2 or later of the
1729 MIPS32 architecture including features from release 5 such as
1730 support for Extended Physical Addressing (XPA).
1732 config CPU_MIPS32_R5_XPA
1733 bool "Extended Physical Addressing (XPA)"
1734 depends on CPU_MIPS32_R5_FEATURES
1736 depends on !PAGE_SIZE_4KB
1737 depends on SYS_SUPPORTS_HIGHMEM
1740 select ARCH_PHYS_ADDR_T_64BIT
1743 Choose this option if you want to enable the Extended Physical
1744 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1745 benefit is to increase physical addressing equal to or greater
1746 than 40 bits. Note that this has the side effect of turning on
1747 64-bit addressing which in turn makes the PTEs 64-bit in size.
1748 If unsure, say 'N' here.
1751 config CPU_NOP_WORKAROUNDS
1754 config CPU_JUMP_WORKAROUNDS
1757 config CPU_LOONGSON2F_WORKAROUNDS
1758 bool "Loongson 2F Workarounds"
1760 select CPU_NOP_WORKAROUNDS
1761 select CPU_JUMP_WORKAROUNDS
1763 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1764 require workarounds. Without workarounds the system may hang
1765 unexpectedly. For more information please refer to the gas
1766 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1768 Loongson 2F03 and later have fixed these issues and no workarounds
1769 are needed. The workarounds have no significant side effect on them
1770 but may decrease the performance of the system so this option should
1771 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1774 If unsure, please say Y.
1775 endif # CPU_LOONGSON2F
1777 config SYS_SUPPORTS_ZBOOT
1779 select HAVE_KERNEL_GZIP
1780 select HAVE_KERNEL_BZIP2
1781 select HAVE_KERNEL_LZ4
1782 select HAVE_KERNEL_LZMA
1783 select HAVE_KERNEL_LZO
1784 select HAVE_KERNEL_XZ
1786 config SYS_SUPPORTS_ZBOOT_UART16550
1788 select SYS_SUPPORTS_ZBOOT
1790 config SYS_SUPPORTS_ZBOOT_UART_PROM
1792 select SYS_SUPPORTS_ZBOOT
1794 config CPU_LOONGSON2
1796 select CPU_SUPPORTS_32BIT_KERNEL
1797 select CPU_SUPPORTS_64BIT_KERNEL
1798 select CPU_SUPPORTS_HIGHMEM
1799 select CPU_SUPPORTS_HUGEPAGES
1801 config CPU_LOONGSON1
1805 select CPU_HAS_PREFETCH
1806 select CPU_SUPPORTS_32BIT_KERNEL
1807 select CPU_SUPPORTS_HIGHMEM
1808 select CPU_SUPPORTS_CPUFREQ
1810 config CPU_BMIPS32_3300
1811 select SMP_UP if SMP
1814 config CPU_BMIPS4350
1816 select SYS_SUPPORTS_SMP
1817 select SYS_SUPPORTS_HOTPLUG_CPU
1819 config CPU_BMIPS4380
1821 select MIPS_L1_CACHE_SHIFT_6
1822 select SYS_SUPPORTS_SMP
1823 select SYS_SUPPORTS_HOTPLUG_CPU
1826 config CPU_BMIPS5000
1828 select MIPS_CPU_SCACHE
1829 select MIPS_L1_CACHE_SHIFT_7
1830 select SYS_SUPPORTS_SMP
1831 select SYS_SUPPORTS_HOTPLUG_CPU
1834 config SYS_HAS_CPU_LOONGSON3
1836 select CPU_SUPPORTS_CPUFREQ
1839 config SYS_HAS_CPU_LOONGSON2E
1842 config SYS_HAS_CPU_LOONGSON2F
1844 select CPU_SUPPORTS_CPUFREQ
1845 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1846 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1848 config SYS_HAS_CPU_LOONGSON1B
1851 config SYS_HAS_CPU_MIPS32_R1
1854 config SYS_HAS_CPU_MIPS32_R2
1857 config SYS_HAS_CPU_MIPS32_R3_5
1860 config SYS_HAS_CPU_MIPS32_R5
1863 config SYS_HAS_CPU_MIPS32_R6
1866 config SYS_HAS_CPU_MIPS64_R1
1869 config SYS_HAS_CPU_MIPS64_R2
1872 config SYS_HAS_CPU_MIPS64_R6
1875 config SYS_HAS_CPU_R3000
1878 config SYS_HAS_CPU_TX39XX
1881 config SYS_HAS_CPU_VR41XX
1884 config SYS_HAS_CPU_R4300
1887 config SYS_HAS_CPU_R4X00
1890 config SYS_HAS_CPU_TX49XX
1893 config SYS_HAS_CPU_R5000
1896 config SYS_HAS_CPU_R5432
1899 config SYS_HAS_CPU_R5500
1902 config SYS_HAS_CPU_R6000
1905 config SYS_HAS_CPU_NEVADA
1908 config SYS_HAS_CPU_R8000
1911 config SYS_HAS_CPU_R10000
1914 config SYS_HAS_CPU_RM7000
1917 config SYS_HAS_CPU_SB1
1920 config SYS_HAS_CPU_CAVIUM_OCTEON
1923 config SYS_HAS_CPU_BMIPS
1926 config SYS_HAS_CPU_BMIPS32_3300
1928 select SYS_HAS_CPU_BMIPS
1930 config SYS_HAS_CPU_BMIPS4350
1932 select SYS_HAS_CPU_BMIPS
1934 config SYS_HAS_CPU_BMIPS4380
1936 select SYS_HAS_CPU_BMIPS
1938 config SYS_HAS_CPU_BMIPS5000
1940 select SYS_HAS_CPU_BMIPS
1942 config SYS_HAS_CPU_XLR
1945 config SYS_HAS_CPU_XLP
1948 config MIPS_MALTA_PM
1949 depends on MIPS_MALTA
1955 # CPU may reorder R->R, R->W, W->R, W->W
1956 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1958 config WEAK_ORDERING
1962 # CPU may reorder reads and writes beyond LL/SC
1963 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1965 config WEAK_REORDERING_BEYOND_LLSC
1970 # These two indicate any level of the MIPS32 and MIPS64 architecture
1974 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1978 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1981 # These two indicate the revision of the architecture, either Release 1 or Release 2
1985 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1989 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1995 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1997 select HAVE_ARCH_BITREVERSE
1998 select MIPS_ASID_BITS_VARIABLE
2007 config SYS_SUPPORTS_32BIT_KERNEL
2009 config SYS_SUPPORTS_64BIT_KERNEL
2011 config CPU_SUPPORTS_32BIT_KERNEL
2013 config CPU_SUPPORTS_64BIT_KERNEL
2015 config CPU_SUPPORTS_CPUFREQ
2017 config CPU_SUPPORTS_ADDRWINCFG
2019 config CPU_SUPPORTS_HUGEPAGES
2021 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2023 config MIPS_PGD_C0_CONTEXT
2025 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2028 # Set to y for ptrace access to watch registers.
2030 config HARDWARE_WATCHPOINTS
2032 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2037 prompt "Kernel code model"
2039 You should only select this option if you have a workload that
2040 actually benefits from 64-bit processing or if your machine has
2041 large memory. You will only be presented a single option in this
2042 menu if your system does not support both 32-bit and 64-bit kernels.
2045 bool "32-bit kernel"
2046 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2049 Select this option if you want to build a 32-bit kernel.
2052 bool "64-bit kernel"
2053 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2055 Select this option if you want to build a 64-bit kernel.
2060 bool "KVM Guest Kernel"
2061 depends on BROKEN_ON_SMP
2063 Select this option if building a guest kernel for KVM (Trap & Emulate)
2066 config KVM_GUEST_TIMER_FREQ
2067 int "Count/Compare Timer Frequency (MHz)"
2068 depends on KVM_GUEST
2071 Set this to non-zero if building a guest kernel for KVM to skip RTC
2072 emulation when determining guest CPU Frequency. Instead, the guest's
2073 timer frequency is specified directly.
2075 config MIPS_VA_BITS_48
2076 bool "48 bits virtual memory"
2079 Support a maximum at least 48 bits of application virtual memory.
2080 Default is 40 bits or less, depending on the CPU.
2081 This option result in a small memory overhead for page tables.
2082 This option is only supported with 16k and 64k page sizes.
2086 prompt "Kernel page size"
2087 default PAGE_SIZE_4KB
2089 config PAGE_SIZE_4KB
2091 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2092 depends on !MIPS_VA_BITS_48
2094 This option select the standard 4kB Linux page size. On some
2095 R3000-family processors this is the only available page size. Using
2096 4kB page size will minimize memory consumption and is therefore
2097 recommended for low memory systems.
2099 config PAGE_SIZE_8KB
2101 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2102 depends on !MIPS_VA_BITS_48
2104 Using 8kB page size will result in higher performance kernel at
2105 the price of higher memory consumption. This option is available
2106 only on R8000 and cnMIPS processors. Note that you will need a
2107 suitable Linux distribution to support this.
2109 config PAGE_SIZE_16KB
2111 depends on !CPU_R3000 && !CPU_TX39XX
2113 Using 16kB page size will result in higher performance kernel at
2114 the price of higher memory consumption. This option is available on
2115 all non-R3000 family processors. Note that you will need a suitable
2116 Linux distribution to support this.
2118 config PAGE_SIZE_32KB
2120 depends on CPU_CAVIUM_OCTEON
2121 depends on !MIPS_VA_BITS_48
2123 Using 32kB page size will result in higher performance kernel at
2124 the price of higher memory consumption. This option is available
2125 only on cnMIPS cores. Note that you will need a suitable Linux
2126 distribution to support this.
2128 config PAGE_SIZE_64KB
2130 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2132 Using 64kB page size will result in higher performance kernel at
2133 the price of higher memory consumption. This option is available on
2134 all non-R3000 family processor. Not that at the time of this
2135 writing this option is still high experimental.
2139 config FORCE_MAX_ZONEORDER
2140 int "Maximum zone order"
2141 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2142 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2143 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2144 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2145 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2146 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2150 The kernel memory allocator divides physically contiguous memory
2151 blocks into "zones", where each zone is a power of two number of
2152 pages. This option selects the largest power of two that the kernel
2153 keeps in the memory allocator. If you need to allocate very large
2154 blocks of physically contiguous memory, then you may need to
2155 increase this value.
2157 This config option is actually maximum order plus one. For example,
2158 a value of 11 means that the largest free memory block is 2^10 pages.
2160 The page size is not necessarily 4KB. Keep this in mind
2161 when choosing a value for this option.
2166 config IP22_CPU_SCACHE
2171 # Support for a MIPS32 / MIPS64 style S-caches
2173 config MIPS_CPU_SCACHE
2177 config R5000_CPU_SCACHE
2181 config RM7000_CPU_SCACHE
2185 config SIBYTE_DMA_PAGEOPS
2186 bool "Use DMA to clear/copy pages"
2189 Instead of using the CPU to zero and copy pages, use a Data Mover
2190 channel. These DMA channels are otherwise unused by the standard
2191 SiByte Linux port. Seems to give a small performance benefit.
2193 config CPU_HAS_PREFETCH
2196 config CPU_GENERIC_DUMP_TLB
2198 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2202 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2204 config CPU_R4K_CACHE_TLB
2206 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2209 bool "MIPS MT SMP support (1 TC on each available VPE)"
2210 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2211 select CPU_MIPSR2_IRQ_VI
2212 select CPU_MIPSR2_IRQ_EI
2217 select SYS_SUPPORTS_SMP
2218 select SYS_SUPPORTS_SCHED_SMT
2219 select MIPS_PERF_SHARED_TC_COUNTERS
2221 This is a kernel model which is known as SMVP. This is supported
2222 on cores with the MT ASE and uses the available VPEs to implement
2223 virtual processors which supports SMP. This is equivalent to the
2224 Intel Hyperthreading feature. For further information go to
2225 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2231 bool "SMT (multithreading) scheduler support"
2232 depends on SYS_SUPPORTS_SCHED_SMT
2235 SMT scheduler support improves the CPU scheduler's decision making
2236 when dealing with MIPS MT enabled cores at a cost of slightly
2237 increased overhead in some places. If unsure say N here.
2239 config SYS_SUPPORTS_SCHED_SMT
2242 config SYS_SUPPORTS_MULTITHREADING
2245 config MIPS_MT_FPAFF
2246 bool "Dynamic FPU affinity for FP-intensive threads"
2248 depends on MIPS_MT_SMP
2250 config MIPSR2_TO_R6_EMULATOR
2251 bool "MIPS R2-to-R6 emulator"
2252 depends on CPU_MIPSR6 && !SMP
2255 Choose this option if you want to run non-R6 MIPS userland code.
2256 Even if you say 'Y' here, the emulator will still be disabled by
2257 default. You can enable it using the 'mipsr2emu' kernel option.
2258 The only reason this is a build-time option is to save ~14K from the
2260 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2261 depends on SMP && CPU_MIPSR6
2263 config MIPS_VPE_LOADER
2264 bool "VPE loader support."
2265 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2266 select CPU_MIPSR2_IRQ_VI
2267 select CPU_MIPSR2_IRQ_EI
2270 Includes a loader for loading an elf relocatable object
2271 onto another VPE and running it.
2273 config MIPS_VPE_LOADER_CMP
2276 depends on MIPS_VPE_LOADER && MIPS_CMP
2278 config MIPS_VPE_LOADER_MT
2281 depends on MIPS_VPE_LOADER && !MIPS_CMP
2283 config MIPS_VPE_LOADER_TOM
2284 bool "Load VPE program into memory hidden from linux"
2285 depends on MIPS_VPE_LOADER
2288 The loader can use memory that is present but has been hidden from
2289 Linux using the kernel command line option "mem=xxMB". It's up to
2290 you to ensure the amount you put in the option and the space your
2291 program requires is less or equal to the amount physically present.
2293 config MIPS_VPE_APSP_API
2294 bool "Enable support for AP/SP API (RTLX)"
2295 depends on MIPS_VPE_LOADER
2298 config MIPS_VPE_APSP_API_CMP
2301 depends on MIPS_VPE_APSP_API && MIPS_CMP
2303 config MIPS_VPE_APSP_API_MT
2306 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2309 bool "MIPS CMP framework support (DEPRECATED)"
2310 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2313 select SYS_SUPPORTS_SMP
2314 select WEAK_ORDERING
2317 Select this if you are using a bootloader which implements the "CMP
2318 framework" protocol (ie. YAMON) and want your kernel to make use of
2319 its ability to start secondary CPUs.
2321 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2325 bool "MIPS Coherent Processing System support"
2326 depends on SYS_SUPPORTS_MIPS_CPS
2329 select MIPS_CPS_PM if HOTPLUG_CPU
2331 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2332 select SYS_SUPPORTS_HOTPLUG_CPU
2333 select SYS_SUPPORTS_SMP
2334 select WEAK_ORDERING
2336 Select this if you wish to run an SMP kernel across multiple cores
2337 within a MIPS Coherent Processing System. When this option is
2338 enabled the kernel will probe for other cores and boot them with
2339 no external assistance. It is safe to enable this when hardware
2340 support is unavailable.
2353 config SB1_PASS_2_WORKAROUNDS
2355 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2358 config SB1_PASS_2_1_WORKAROUNDS
2360 depends on CPU_SB1 && CPU_SB1_PASS_2
2364 config ARCH_PHYS_ADDR_T_64BIT
2368 prompt "SmartMIPS or microMIPS ASE support"
2370 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2373 Select this if you want neither microMIPS nor SmartMIPS support
2375 config CPU_HAS_SMARTMIPS
2376 depends on SYS_SUPPORTS_SMARTMIPS
2379 SmartMIPS is a extension of the MIPS32 architecture aimed at
2380 increased security at both hardware and software level for
2381 smartcards. Enabling this option will allow proper use of the
2382 SmartMIPS instructions by Linux applications. However a kernel with
2383 this option will not work on a MIPS core without SmartMIPS core. If
2384 you don't know you probably don't have SmartMIPS and should say N
2387 config CPU_MICROMIPS
2388 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2391 When this option is enabled the kernel will be built using the
2397 bool "Support for the MIPS SIMD Architecture"
2398 depends on CPU_SUPPORTS_MSA
2399 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2401 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2402 and a set of SIMD instructions to operate on them. When this option
2403 is enabled the kernel will support allocating & switching MSA
2404 vector register contexts. If you know that your kernel will only be
2405 running on CPUs which do not support MSA or that your userland will
2406 not be making use of it then you may wish to say N here to reduce
2407 the size & complexity of your kernel.
2421 # Vectored interrupt mode is an R2 feature
2423 config CPU_MIPSR2_IRQ_VI
2427 # Extended interrupt mode is an R2 feature
2429 config CPU_MIPSR2_IRQ_EI
2434 depends on !CPU_R3000
2440 config CPU_DADDI_WORKAROUNDS
2443 config CPU_R4000_WORKAROUNDS
2445 select CPU_R4400_WORKAROUNDS
2447 config CPU_R4400_WORKAROUNDS
2450 config MIPS_ASID_SHIFT
2452 default 6 if CPU_R3000 || CPU_TX39XX
2453 default 4 if CPU_R8000
2456 config MIPS_ASID_BITS
2458 default 0 if MIPS_ASID_BITS_VARIABLE
2459 default 6 if CPU_R3000 || CPU_TX39XX
2462 config MIPS_ASID_BITS_VARIABLE
2466 # - Highmem only makes sense for the 32-bit kernel.
2467 # - The current highmem code will only work properly on physically indexed
2468 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2469 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2470 # moment we protect the user and offer the highmem option only on machines
2471 # where it's known to be safe. This will not offer highmem on a few systems
2472 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2473 # indexed CPUs but we're playing safe.
2474 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2475 # know they might have memory configurations that could make use of highmem
2479 bool "High Memory Support"
2480 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2482 config CPU_SUPPORTS_HIGHMEM
2485 config SYS_SUPPORTS_HIGHMEM
2488 config SYS_SUPPORTS_SMARTMIPS
2491 config SYS_SUPPORTS_MICROMIPS
2494 config SYS_SUPPORTS_MIPS16
2497 This option must be set if a kernel might be executed on a MIPS16-
2498 enabled CPU even if MIPS16 is not actually being used. In other
2499 words, it makes the kernel MIPS16-tolerant.
2501 config CPU_SUPPORTS_MSA
2504 config ARCH_FLATMEM_ENABLE
2506 depends on !NUMA && !CPU_LOONGSON2
2508 config ARCH_DISCONTIGMEM_ENABLE
2510 default y if SGI_IP27
2512 Say Y to support efficient handling of discontiguous physical memory,
2513 for architectures which are either NUMA (Non-Uniform Memory Access)
2514 or have huge holes in the physical address space for other reasons.
2515 See <file:Documentation/vm/numa> for more.
2517 config ARCH_SPARSEMEM_ENABLE
2519 select SPARSEMEM_STATIC
2523 depends on SYS_SUPPORTS_NUMA
2525 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2526 Access). This option improves performance on systems with more
2527 than two nodes; on two node systems it is generally better to
2528 leave it disabled; on single node systems disable this option
2531 config SYS_SUPPORTS_NUMA
2535 bool "Relocatable kernel"
2536 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2538 This builds a kernel image that retains relocation information
2539 so it can be loaded someplace besides the default 1MB.
2540 The relocations make the kernel binary about 15% larger,
2541 but are discarded at runtime
2543 config RELOCATION_TABLE_SIZE
2544 hex "Relocation table size"
2545 depends on RELOCATABLE
2546 range 0x0 0x01000000
2547 default "0x00100000"
2549 A table of relocation data will be appended to the kernel binary
2550 and parsed at boot to fix up the relocated kernel.
2552 This option allows the amount of space reserved for the table to be
2553 adjusted, although the default of 1Mb should be ok in most cases.
2555 The build will fail and a valid size suggested if this is too small.
2557 If unsure, leave at the default value.
2559 config RANDOMIZE_BASE
2560 bool "Randomize the address of the kernel image"
2561 depends on RELOCATABLE
2563 Randomizes the physical and virtual address at which the
2564 kernel image is loaded, as a security feature that
2565 deters exploit attempts relying on knowledge of the location
2566 of kernel internals.
2568 Entropy is generated using any coprocessor 0 registers available.
2570 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2574 config RANDOMIZE_BASE_MAX_OFFSET
2575 hex "Maximum kASLR offset" if EXPERT
2576 depends on RANDOMIZE_BASE
2577 range 0x0 0x40000000 if EVA || 64BIT
2578 range 0x0 0x08000000
2579 default "0x01000000"
2581 When kASLR is active, this provides the maximum offset that will
2582 be applied to the kernel image. It should be set according to the
2583 amount of physical RAM available in the target system minus
2584 PHYSICAL_START and must be a power of 2.
2586 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2587 EVA or 64-bit. The default is 16Mb.
2592 depends on NEED_MULTIPLE_NODES
2594 config HW_PERF_EVENTS
2595 bool "Enable hardware performance counter support for perf events"
2596 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2599 Enable hardware performance counter support for perf events. If
2600 disabled, perf events will use software events only.
2605 bool "Multi-Processing support"
2606 depends on SYS_SUPPORTS_SMP
2608 This enables support for systems with more than one CPU. If you have
2609 a system with only one CPU, say N. If you have a system with more
2610 than one CPU, say Y.
2612 If you say N here, the kernel will run on uni- and multiprocessor
2613 machines, but will use only one CPU of a multiprocessor machine. If
2614 you say Y here, the kernel will run on many, but not all,
2615 uniprocessor machines. On a uniprocessor machine, the kernel
2616 will run faster if you say N here.
2618 People using multiprocessor machines who say Y here should also say
2619 Y to "Enhanced Real Time Clock Support", below.
2621 See also the SMP-HOWTO available at
2622 <http://www.tldp.org/docs.html#howto>.
2624 If you don't know what to do here, say N.
2627 bool "Support for hot-pluggable CPUs"
2628 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2630 Say Y here to allow turning CPUs off and on. CPUs can be
2631 controlled through /sys/devices/system/cpu.
2632 (Note: power management support will enable this option
2633 automatically on SMP systems. )
2634 Say N if you want to disable CPU hotplug.
2639 config SYS_SUPPORTS_MIPS_CMP
2642 config SYS_SUPPORTS_MIPS_CPS
2645 config SYS_SUPPORTS_SMP
2648 config NR_CPUS_DEFAULT_4
2651 config NR_CPUS_DEFAULT_8
2654 config NR_CPUS_DEFAULT_16
2657 config NR_CPUS_DEFAULT_32
2660 config NR_CPUS_DEFAULT_64
2664 int "Maximum number of CPUs (2-256)"
2667 default "4" if NR_CPUS_DEFAULT_4
2668 default "8" if NR_CPUS_DEFAULT_8
2669 default "16" if NR_CPUS_DEFAULT_16
2670 default "32" if NR_CPUS_DEFAULT_32
2671 default "64" if NR_CPUS_DEFAULT_64
2673 This allows you to specify the maximum number of CPUs which this
2674 kernel will support. The maximum supported value is 32 for 32-bit
2675 kernel and 64 for 64-bit kernels; the minimum value which makes
2676 sense is 1 for Qemu (useful only for kernel debugging purposes)
2677 and 2 for all others.
2679 This is purely to save memory - each supported CPU adds
2680 approximately eight kilobytes to the kernel image. For best
2681 performance should round up your number of processors to the next
2684 config MIPS_PERF_SHARED_TC_COUNTERS
2688 # Timer Interrupt Frequency Configuration
2692 prompt "Timer frequency"
2695 Allows the configuration of the timer frequency.
2698 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2701 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2704 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2707 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2710 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2713 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2716 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2719 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2723 config SYS_SUPPORTS_24HZ
2726 config SYS_SUPPORTS_48HZ
2729 config SYS_SUPPORTS_100HZ
2732 config SYS_SUPPORTS_128HZ
2735 config SYS_SUPPORTS_250HZ
2738 config SYS_SUPPORTS_256HZ
2741 config SYS_SUPPORTS_1000HZ
2744 config SYS_SUPPORTS_1024HZ
2747 config SYS_SUPPORTS_ARBIT_HZ
2749 default y if !SYS_SUPPORTS_24HZ && \
2750 !SYS_SUPPORTS_48HZ && \
2751 !SYS_SUPPORTS_100HZ && \
2752 !SYS_SUPPORTS_128HZ && \
2753 !SYS_SUPPORTS_250HZ && \
2754 !SYS_SUPPORTS_256HZ && \
2755 !SYS_SUPPORTS_1000HZ && \
2756 !SYS_SUPPORTS_1024HZ
2762 default 100 if HZ_100
2763 default 128 if HZ_128
2764 default 250 if HZ_250
2765 default 256 if HZ_256
2766 default 1000 if HZ_1000
2767 default 1024 if HZ_1024
2770 def_bool HIGH_RES_TIMERS
2772 source "kernel/Kconfig.preempt"
2775 bool "Kexec system call"
2778 kexec is a system call that implements the ability to shutdown your
2779 current kernel, and to start another kernel. It is like a reboot
2780 but it is independent of the system firmware. And like a reboot
2781 you can start any kernel with it, not just Linux.
2783 The name comes from the similarity to the exec system call.
2785 It is an ongoing process to be certain the hardware in a machine
2786 is properly shutdown, so do not be surprised if this code does not
2787 initially work for you. As of this writing the exact hardware
2788 interface is strongly in flux, so no good recommendation can be
2792 bool "Kernel crash dumps"
2794 Generate crash dump after being started by kexec.
2795 This should be normally only set in special crash dump kernels
2796 which are loaded in the main kernel with kexec-tools into
2797 a specially reserved region and then later executed after
2798 a crash by kdump/kexec. The crash dump kernel must be compiled
2799 to a memory address not used by the main kernel or firmware using
2802 config PHYSICAL_START
2803 hex "Physical address where the kernel is loaded"
2804 default "0xffffffff84000000" if 64BIT
2805 default "0x84000000" if 32BIT
2806 depends on CRASH_DUMP
2808 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2809 If you plan to use kernel for capturing the crash dump change
2810 this value to start of the reserved region (the "X" value as
2811 specified in the "crashkernel=YM@XM" command line boot parameter
2812 passed to the panic-ed kernel).
2815 bool "Enable seccomp to safely compute untrusted bytecode"
2819 This kernel feature is useful for number crunching applications
2820 that may need to compute untrusted bytecode during their
2821 execution. By using pipes or other transports made available to
2822 the process as file descriptors supporting the read/write
2823 syscalls, it's possible to isolate those applications in
2824 their own address space using seccomp. Once seccomp is
2825 enabled via /proc/<pid>/seccomp, it cannot be disabled
2826 and the task is only allowed to execute a few safe syscalls
2827 defined by each seccomp mode.
2829 If unsure, say Y. Only embedded should say N here.
2831 config MIPS_O32_FP64_SUPPORT
2832 bool "Support for O32 binaries using 64-bit FP"
2833 depends on 32BIT || MIPS32_O32
2835 When this is enabled, the kernel will support use of 64-bit floating
2836 point registers with binaries using the O32 ABI along with the
2837 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2838 32-bit MIPS systems this support is at the cost of increasing the
2839 size and complexity of the compiled FPU emulator. Thus if you are
2840 running a MIPS32 system and know that none of your userland binaries
2841 will require 64-bit floating point, you may wish to reduce the size
2842 of your kernel & potentially improve FP emulation performance by
2845 Although binutils currently supports use of this flag the details
2846 concerning its effect upon the O32 ABI in userland are still being
2847 worked on. In order to avoid userland becoming dependant upon current
2848 behaviour before the details have been finalised, this option should
2849 be considered experimental and only enabled by those working upon
2857 select OF_EARLY_FLATTREE
2864 prompt "Kernel appended dtb support" if USE_OF
2865 default MIPS_NO_APPENDED_DTB
2867 config MIPS_NO_APPENDED_DTB
2870 Do not enable appended dtb support.
2872 config MIPS_ELF_APPENDED_DTB
2875 With this option, the boot code will look for a device tree binary
2876 DTB) included in the vmlinux ELF section .appended_dtb. By default
2877 it is empty and the DTB can be appended using binutils command
2880 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2882 This is meant as a backward compatiblity convenience for those
2883 systems with a bootloader that can't be upgraded to accommodate
2884 the documented boot protocol using a device tree.
2886 config MIPS_RAW_APPENDED_DTB
2889 With this option, the boot code will look for a device tree binary
2890 DTB) appended to raw vmlinux.bin (without decompressor).
2891 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2893 This is meant as a backward compatibility convenience for those
2894 systems with a bootloader that can't be upgraded to accommodate
2895 the documented boot protocol using a device tree.
2897 Beware that there is very little in terms of protection against
2898 this option being confused by leftover garbage in memory that might
2899 look like a DTB header after a reboot if no actual DTB is appended
2900 to vmlinux.bin. Do not leave this option active in a production kernel
2901 if you don't intend to always append a DTB.
2903 config MIPS_ZBOOT_APPENDED_DTB
2905 depends on SYS_SUPPORTS_ZBOOT
2907 With this option, the boot code will look for a device tree binary
2908 DTB) appended to raw vmlinuz.bin (with decompressor).
2909 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2911 This is meant as a backward compatibility convenience for those
2912 systems with a bootloader that can't be upgraded to accommodate
2913 the documented boot protocol using a device tree.
2915 Beware that there is very little in terms of protection against
2916 this option being confused by leftover garbage in memory that might
2917 look like a DTB header after a reboot if no actual DTB is appended
2918 to vmlinuz.bin. Do not leave this option active in a production kernel
2919 if you don't intend to always append a DTB.
2923 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2924 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2925 !MIPS_MALTA && !MIPS_SEAD3 && \
2927 default MIPS_CMDLINE_FROM_BOOTLOADER
2929 config MIPS_CMDLINE_FROM_DTB
2931 bool "Dtb kernel arguments if available"
2933 config MIPS_CMDLINE_DTB_EXTEND
2935 bool "Extend dtb kernel arguments with bootloader arguments"
2937 config MIPS_CMDLINE_FROM_BOOTLOADER
2938 bool "Bootloader kernel arguments if available"
2940 config MIPS_CMDLINE_BUILTIN_EXTEND
2941 depends on CMDLINE_BOOL
2942 bool "Extend builtin kernel arguments with bootloader arguments"
2947 config LOCKDEP_SUPPORT
2951 config STACKTRACE_SUPPORT
2955 config HAVE_LATENCYTOP_SUPPORT
2959 config PGTABLE_LEVELS
2961 default 3 if 64BIT && !PAGE_SIZE_64KB
2964 source "init/Kconfig"
2966 source "kernel/Kconfig.freezer"
2968 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2976 bool "Support for PCI controller"
2977 depends on HW_HAS_PCI
2979 select NO_GENERIC_PCI_IOPORT_MAP
2981 Find out whether you have a PCI motherboard. PCI is the name of a
2982 bus system, i.e. the way the CPU talks to the other stuff inside
2983 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2987 bool "Support for HT-linked PCI"
2989 depends on CPU_LOONGSON3
2993 Loongson family machines use Hyper-Transport bus for inter-core
2994 connection and device connection. The PCI bus is a subordinate
2995 linked at HT. Choose Y for Loongson-3 based machines.
3000 source "drivers/pci/Kconfig"
3003 # ISA support is now enabled via select. Too many systems still have the one
3004 # or other ISA chip on the board that users don't know about so don't expect
3005 # users to choose the right thing ...
3012 depends on HW_HAS_EISA
3014 select GENERIC_ISA_DMA
3016 The Extended Industry Standard Architecture (EISA) bus was
3017 developed as an open alternative to the IBM MicroChannel bus.
3019 The EISA bus provided some of the features of the IBM MicroChannel
3020 bus while maintaining backward compatibility with cards made for
3021 the older ISA bus. The EISA bus saw limited use between 1988 and
3022 1995 when it was made obsolete by the PCI bus.
3024 Say Y here if you are building a kernel for an EISA-based machine.
3028 source "drivers/eisa/Kconfig"
3031 bool "TURBOchannel support"
3032 depends on MACH_DECSTATION
3034 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3035 processors. TURBOchannel programming specifications are available
3037 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3039 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3040 Linux driver support status is documented at:
3041 <http://www.linux-mips.org/wiki/DECstation>
3051 select MIPS_EXTERNAL_TIMER
3059 source "drivers/pcmcia/Kconfig"
3062 tristate "RapidIO support"
3066 If you say Y here, the kernel will include drivers and
3067 infrastructure code to support RapidIO interconnect devices.
3069 source "drivers/rapidio/Kconfig"
3073 menu "Executable file formats"
3075 source "fs/Kconfig.binfmt"
3080 config MIPS32_COMPAT
3086 config SYSVIPC_COMPAT
3090 bool "Kernel support for o32 binaries"
3092 select ARCH_WANT_OLD_COMPAT_IPC
3094 select MIPS32_COMPAT
3095 select SYSVIPC_COMPAT if SYSVIPC
3097 Select this option if you want to run o32 binaries. These are pure
3098 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3099 existing binaries are in this format.
3104 bool "Kernel support for n32 binaries"
3107 select MIPS32_COMPAT
3108 select SYSVIPC_COMPAT if SYSVIPC
3110 Select this option if you want to run n32 binaries. These are
3111 64-bit binaries using 32-bit quantities for addressing and certain
3112 data that would normally be 64-bit. They are used in special
3119 default y if MIPS32_O32 || MIPS32_N32
3124 menu "Power management options"
3126 config ARCH_HIBERNATION_POSSIBLE
3128 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3130 config ARCH_SUSPEND_POSSIBLE
3132 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3134 source "kernel/power/Kconfig"
3138 config MIPS_EXTERNAL_TIMER
3141 menu "CPU Power Management"
3143 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3144 source "drivers/cpufreq/Kconfig"
3147 source "drivers/cpuidle/Kconfig"
3151 source "net/Kconfig"
3153 source "drivers/Kconfig"
3155 source "drivers/firmware/Kconfig"
3159 source "arch/mips/Kconfig.debug"
3161 source "security/Kconfig"
3163 source "crypto/Kconfig"
3165 source "lib/Kconfig"
3167 source "arch/mips/kvm/Kconfig"