4 select ARCH_SUPPORTS_UPROBES
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
8 select ARCH_USE_BUILTIN_BSWAP
9 select HAVE_CONTEXT_TRACKING
10 select HAVE_GENERIC_DMA_COHERENT
13 select HAVE_PERF_EVENTS
14 select PERF_USE_VMALLOC
16 select HAVE_ARCH_SECCOMP_FILTER
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_CBPF_JIT if !CPU_MICROMIPS
19 select HAVE_FUNCTION_TRACER
20 select HAVE_DYNAMIC_FTRACE
21 select HAVE_FTRACE_MCOUNT_RECORD
22 select HAVE_C_RECORDMCOUNT
23 select HAVE_FUNCTION_GRAPH_TRACER
25 select HAVE_KRETPROBES
26 select HAVE_SYSCALL_TRACEPOINTS
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_SYSCALL_TRACEPOINTS
29 select ARCH_HAS_ELF_RANDOMIZE
30 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
31 select RTC_LIB if !MACH_LOONGSON64
32 select GENERIC_ATOMIC64 if !64BIT
33 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
34 select HAVE_DMA_CONTIGUOUS
35 select HAVE_DMA_API_DEBUG
36 select GENERIC_IRQ_PROBE
37 select GENERIC_IRQ_SHOW
38 select GENERIC_PCI_IOMAP
39 select HAVE_ARCH_JUMP_LABEL
40 select ARCH_WANT_IPC_PARSE_VERSION
41 select IRQ_FORCED_THREADING
43 select HAVE_MEMBLOCK_NODE_MAP
44 select ARCH_DISCARD_MEMBLOCK
45 select GENERIC_SMP_IDLE_THREAD
46 select BUILDTIME_EXTABLE_SORT
47 select GENERIC_CLOCKEVENTS
48 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
49 select GENERIC_CMOS_UPDATE
50 select HAVE_MOD_ARCH_SPECIFIC
53 select MODULES_USE_ELF_REL if MODULES
54 select MODULES_USE_ELF_RELA if MODULES && 64BIT
55 select CLONE_BACKWARDS
56 select HAVE_DEBUG_STACKOVERFLOW
57 select HAVE_CC_STACKPROTECTOR
58 select CPU_PM if CPU_IDLE
59 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
60 select ARCH_BINFMT_ELF_STATE
61 select SYSCTL_EXCEPTION_TRACE
62 select HAVE_VIRT_CPU_ACCOUNTING_GEN
63 select HAVE_IRQ_TIME_ACCOUNTING
64 select GENERIC_TIME_VSYSCALL
65 select ARCH_CLOCKSOURCE_DATA
66 select HANDLE_DOMAIN_IRQ
68 menu "Machine selection"
75 bool "Alchemy processor based machines"
76 select ARCH_PHYS_ADDR_T_64BIT
80 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
81 select SYS_HAS_CPU_MIPS32_R1
82 select SYS_SUPPORTS_32BIT_KERNEL
83 select SYS_SUPPORTS_APM_EMULATION
85 select SYS_SUPPORTS_ZBOOT
89 bool "Texas Instruments AR7"
91 select DMA_NONCOHERENT
97 select SYS_HAS_CPU_MIPS32_R1
98 select SYS_HAS_EARLY_PRINTK
99 select SYS_SUPPORTS_32BIT_KERNEL
100 select SYS_SUPPORTS_LITTLE_ENDIAN
101 select SYS_SUPPORTS_MIPS16
102 select SYS_SUPPORTS_ZBOOT_UART16550
107 Support for the Texas Instruments AR7 System-on-a-Chip
108 family: TNETD7100, 7200 and 7300.
111 bool "Atheros AR231x/AR531x SoC support"
114 select DMA_NONCOHERENT
117 select SYS_HAS_CPU_MIPS32_R1
118 select SYS_SUPPORTS_BIG_ENDIAN
119 select SYS_SUPPORTS_32BIT_KERNEL
120 select SYS_HAS_EARLY_PRINTK
122 Support for Atheros AR231x and Atheros AR531x based boards
125 bool "Atheros AR71XX/AR724X/AR913X based boards"
126 select ARCH_HAS_RESET_CONTROLLER
130 select DMA_NONCOHERENT
137 select SYS_HAS_CPU_MIPS32_R2
138 select SYS_HAS_EARLY_PRINTK
139 select SYS_SUPPORTS_32BIT_KERNEL
140 select SYS_SUPPORTS_BIG_ENDIAN
141 select SYS_SUPPORTS_MIPS16
142 select SYS_SUPPORTS_ZBOOT_UART_PROM
145 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
148 bool "Broadcom Generic BMIPS kernel"
150 select NO_EXCEPT_FILL
156 select BCM6345_L1_IRQ
157 select BCM7038_L1_IRQ
158 select BCM7120_L2_IRQ
159 select BRCMSTB_L2_IRQ
161 select DMA_NONCOHERENT
162 select SYS_SUPPORTS_32BIT_KERNEL
163 select SYS_SUPPORTS_LITTLE_ENDIAN
164 select SYS_SUPPORTS_BIG_ENDIAN
165 select SYS_SUPPORTS_HIGHMEM
166 select SYS_HAS_CPU_BMIPS32_3300
167 select SYS_HAS_CPU_BMIPS4350
168 select SYS_HAS_CPU_BMIPS4380
169 select SYS_HAS_CPU_BMIPS5000
171 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
172 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
173 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
174 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
176 Build a generic DT-based kernel image that boots on select
177 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
178 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
179 must be set appropriately for your board.
182 bool "Broadcom BCM47XX based boards"
186 select DMA_NONCOHERENT
189 select SYS_HAS_CPU_MIPS32_R1
190 select NO_EXCEPT_FILL
191 select SYS_SUPPORTS_32BIT_KERNEL
192 select SYS_SUPPORTS_LITTLE_ENDIAN
193 select SYS_SUPPORTS_MIPS16
194 select SYS_HAS_EARLY_PRINTK
195 select USE_GENERIC_EARLY_PRINTK_8250
197 select LEDS_GPIO_REGISTER
201 Support for BCM47XX based boards
204 bool "Broadcom BCM63XX based boards"
209 select DMA_NONCOHERENT
211 select SYS_SUPPORTS_32BIT_KERNEL
212 select SYS_SUPPORTS_BIG_ENDIAN
213 select SYS_HAS_EARLY_PRINTK
217 select MIPS_L1_CACHE_SHIFT_4
219 Support for BCM63XX based boards
226 select DMA_NONCOHERENT
232 select PCI_GT64XXX_PCI0
234 select SYS_HAS_CPU_NEVADA
235 select SYS_HAS_EARLY_PRINTK
236 select SYS_SUPPORTS_32BIT_KERNEL
237 select SYS_SUPPORTS_64BIT_KERNEL
238 select SYS_SUPPORTS_LITTLE_ENDIAN
239 select USE_GENERIC_EARLY_PRINTK_8250
241 config MACH_DECSTATION
245 select CEVT_R4K if CPU_R4X00
247 select CSRC_R4K if CPU_R4X00
248 select CPU_DADDI_WORKAROUNDS if 64BIT
249 select CPU_R4000_WORKAROUNDS if 64BIT
250 select CPU_R4400_WORKAROUNDS if 64BIT
251 select DMA_NONCOHERENT
254 select SYS_HAS_CPU_R3000
255 select SYS_HAS_CPU_R4X00
256 select SYS_SUPPORTS_32BIT_KERNEL
257 select SYS_SUPPORTS_64BIT_KERNEL
258 select SYS_SUPPORTS_LITTLE_ENDIAN
259 select SYS_SUPPORTS_128HZ
260 select SYS_SUPPORTS_256HZ
261 select SYS_SUPPORTS_1024HZ
262 select MIPS_L1_CACHE_SHIFT_4
264 This enables support for DEC's MIPS based workstations. For details
265 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
266 DECstation porting pages on <http://decstation.unix-ag.org/>.
268 If you have one of the following DECstation Models you definitely
269 want to choose R4xx0 for the CPU Type:
276 otherwise choose R3000.
279 bool "Jazz family of machines"
282 select ARCH_MAY_HAVE_PC_FDC
285 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
286 select GENERIC_ISA_DMA
287 select HAVE_PCSPKR_PLATFORM
292 select SYS_HAS_CPU_R4X00
293 select SYS_SUPPORTS_32BIT_KERNEL
294 select SYS_SUPPORTS_64BIT_KERNEL
295 select SYS_SUPPORTS_100HZ
297 This a family of machines based on the MIPS R4030 chipset which was
298 used by several vendors to build RISC/os and Windows NT workstations.
299 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
300 Olivetti M700-10 workstations.
303 bool "Ingenic SoC based machines"
304 select SYS_SUPPORTS_32BIT_KERNEL
305 select SYS_SUPPORTS_LITTLE_ENDIAN
306 select SYS_SUPPORTS_ZBOOT_UART16550
307 select DMA_NONCOHERENT
311 select GENERIC_IRQ_CHIP
317 bool "Lantiq based platforms"
318 select DMA_NONCOHERENT
322 select SYS_HAS_CPU_MIPS32_R1
323 select SYS_HAS_CPU_MIPS32_R2
324 select SYS_SUPPORTS_BIG_ENDIAN
325 select SYS_SUPPORTS_32BIT_KERNEL
326 select SYS_SUPPORTS_MIPS16
327 select SYS_SUPPORTS_MULTITHREADING
328 select SYS_HAS_EARLY_PRINTK
335 select PINCTRL_LANTIQ
336 select ARCH_HAS_RESET_CONTROLLER
337 select RESET_CONTROLLER
340 bool "LASAT Networks platforms"
344 select DMA_NONCOHERENT
345 select SYS_HAS_EARLY_PRINTK
348 select PCI_GT64XXX_PCI0
350 select R5000_CPU_SCACHE
351 select SYS_HAS_CPU_R5000
352 select SYS_SUPPORTS_32BIT_KERNEL
353 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
354 select SYS_SUPPORTS_LITTLE_ENDIAN
356 config MACH_LOONGSON32
357 bool "Loongson-1 family of machines"
358 select SYS_SUPPORTS_ZBOOT
360 This enables support for the Loongson-1 family of machines.
362 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
363 the Institute of Computing Technology (ICT), Chinese Academy of
366 config MACH_LOONGSON64
367 bool "Loongson-2/3 family of machines"
368 select SYS_SUPPORTS_ZBOOT
370 This enables the support of Loongson-2/3 family of machines.
372 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
373 family of multi-core CPUs. They are both 64-bit general-purpose
374 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
375 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
376 in the People's Republic of China. The chief architect is Professor
379 config MACH_PISTACHIO
380 bool "IMG Pistachio SoC based boards"
384 select CLKSRC_MIPS_GIC
387 select DMA_MAYBE_COHERENT
392 select MIPS_CPU_SCACHE
396 select SYS_HAS_CPU_MIPS32_R2
397 select SYS_SUPPORTS_32BIT_KERNEL
398 select SYS_SUPPORTS_LITTLE_ENDIAN
399 select SYS_SUPPORTS_MIPS_CPS
400 select SYS_SUPPORTS_MULTITHREADING
401 select SYS_SUPPORTS_RELOCATABLE
402 select SYS_SUPPORTS_ZBOOT
403 select SYS_HAS_EARLY_PRINTK
404 select USE_GENERIC_EARLY_PRINTK_8250
407 This enables support for the IMG Pistachio SoC platform.
410 bool "MIPSfpga Xilinx based boards"
420 select MIPS_CPU_SCACHE
421 select SYS_HAS_EARLY_PRINTK
422 select SYS_HAS_CPU_MIPS32_R2
423 select SYS_SUPPORTS_32BIT_KERNEL
424 select SYS_SUPPORTS_LITTLE_ENDIAN
425 select SYS_SUPPORTS_ZBOOT_UART16550
427 select USE_GENERIC_EARLY_PRINTK_8250
429 This enables support for the IMG University Program MIPSfpga platform.
432 bool "MIPS Malta board"
433 select ARCH_MAY_HAVE_PC_FDC
439 select CLKSRC_MIPS_GIC
441 select DMA_MAYBE_COHERENT
442 select GENERIC_ISA_DMA
443 select HAVE_PCSPKR_PLATFORM
450 select MIPS_CPU_SCACHE
451 select MIPS_L1_CACHE_SHIFT_6
452 select PCI_GT64XXX_PCI0
456 select SYS_HAS_CPU_MIPS32_R1
457 select SYS_HAS_CPU_MIPS32_R2
458 select SYS_HAS_CPU_MIPS32_R3_5
459 select SYS_HAS_CPU_MIPS32_R5
460 select SYS_HAS_CPU_MIPS32_R6
461 select SYS_HAS_CPU_MIPS64_R1
462 select SYS_HAS_CPU_MIPS64_R2
463 select SYS_HAS_CPU_MIPS64_R6
464 select SYS_HAS_CPU_NEVADA
465 select SYS_HAS_CPU_RM7000
466 select SYS_SUPPORTS_32BIT_KERNEL
467 select SYS_SUPPORTS_64BIT_KERNEL
468 select SYS_SUPPORTS_BIG_ENDIAN
469 select SYS_SUPPORTS_HIGHMEM
470 select SYS_SUPPORTS_LITTLE_ENDIAN
471 select SYS_SUPPORTS_MICROMIPS
472 select SYS_SUPPORTS_MIPS_CMP
473 select SYS_SUPPORTS_MIPS_CPS
474 select SYS_SUPPORTS_MIPS16
475 select SYS_SUPPORTS_MULTITHREADING
476 select SYS_SUPPORTS_SMARTMIPS
477 select SYS_SUPPORTS_ZBOOT
478 select SYS_SUPPORTS_RELOCATABLE
480 select ZONE_DMA32 if 64BIT
484 This enables support for the MIPS Technologies Malta evaluation
488 bool "Microchip PIC32 Family"
490 This enables support for the Microchip PIC32 family of platforms.
492 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
496 bool "MIPS SEAD3 board"
502 select CLKSRC_MIPS_GIC
504 select CPU_MIPSR2_IRQ_VI
505 select CPU_MIPSR2_IRQ_EI
506 select DMA_NONCOHERENT
511 select SYS_HAS_CPU_MIPS32_R1
512 select SYS_HAS_CPU_MIPS32_R2
513 select SYS_HAS_CPU_MIPS32_R6
514 select SYS_HAS_CPU_MIPS64_R1
515 select SYS_HAS_EARLY_PRINTK
516 select SYS_SUPPORTS_32BIT_KERNEL
517 select SYS_SUPPORTS_64BIT_KERNEL
518 select SYS_SUPPORTS_BIG_ENDIAN
519 select SYS_SUPPORTS_LITTLE_ENDIAN
520 select SYS_SUPPORTS_SMARTMIPS
521 select SYS_SUPPORTS_MICROMIPS
522 select SYS_SUPPORTS_MIPS16
523 select SYS_SUPPORTS_RELOCATABLE
524 select USB_EHCI_BIG_ENDIAN_DESC
525 select USB_EHCI_BIG_ENDIAN_MMIO
528 This enables support for the MIPS Technologies SEAD3 evaluation
532 bool "NEC EMMA2RH Mark-eins board"
536 This enables support for the NEC Electronics Mark-eins boards.
539 bool "NEC VR4100 series based machines"
542 select SYS_HAS_CPU_VR41XX
543 select SYS_SUPPORTS_MIPS16
547 bool "NXP STB220 board"
550 Support for NXP Semiconductors STB220 Development Board.
557 Support for NXP Semiconductors STB225 Development Board.
560 bool "PMC-Sierra MSP chipsets"
563 select DMA_NONCOHERENT
565 select NO_EXCEPT_FILL
567 select SYS_HAS_CPU_MIPS32_R1
568 select SYS_HAS_CPU_MIPS32_R2
569 select SYS_SUPPORTS_32BIT_KERNEL
570 select SYS_SUPPORTS_BIG_ENDIAN
571 select SYS_SUPPORTS_MIPS16
574 select SERIAL_8250_CONSOLE
575 select USB_EHCI_BIG_ENDIAN_MMIO
576 select USB_EHCI_BIG_ENDIAN_DESC
578 This adds support for the PMC-Sierra family of Multi-Service
579 Processor System-On-A-Chips. These parts include a number
580 of integrated peripherals, interfaces and DSPs in addition to
581 a variety of MIPS cores.
584 bool "Ralink based machines"
588 select DMA_NONCOHERENT
591 select SYS_HAS_CPU_MIPS32_R1
592 select SYS_HAS_CPU_MIPS32_R2
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_LITTLE_ENDIAN
595 select SYS_SUPPORTS_MIPS16
596 select SYS_HAS_EARLY_PRINTK
598 select ARCH_HAS_RESET_CONTROLLER
599 select RESET_CONTROLLER
602 bool "SGI IP22 (Indy/Indigo2)"
608 select DEFAULT_SGI_PARTITION
609 select DMA_NONCOHERENT
613 select IP22_CPU_SCACHE
615 select GENERIC_ISA_DMA_SUPPORT_BROKEN
617 select SGI_HAS_INDYDOG
623 select SYS_HAS_CPU_R4X00
624 select SYS_HAS_CPU_R5000
626 # Disable EARLY_PRINTK for now since it leads to overwritten prom
627 # memory during early boot on some machines.
629 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
630 # for a more details discussion
632 # select SYS_HAS_EARLY_PRINTK
633 select SYS_SUPPORTS_32BIT_KERNEL
634 select SYS_SUPPORTS_64BIT_KERNEL
635 select SYS_SUPPORTS_BIG_ENDIAN
636 select MIPS_L1_CACHE_SHIFT_7
638 This are the SGI Indy, Challenge S and Indigo2, as well as certain
639 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
640 that runs on these, say Y here.
643 bool "SGI IP27 (Origin200/2000)"
647 select DEFAULT_SGI_PARTITION
649 select SYS_HAS_EARLY_PRINTK
651 select NR_CPUS_DEFAULT_64
652 select SYS_HAS_CPU_R10000
653 select SYS_SUPPORTS_64BIT_KERNEL
654 select SYS_SUPPORTS_BIG_ENDIAN
655 select SYS_SUPPORTS_NUMA
656 select SYS_SUPPORTS_SMP
657 select MIPS_L1_CACHE_SHIFT_7
659 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
660 workstations. To compile a Linux kernel that runs on these, say Y
664 bool "SGI IP28 (Indigo2 R10k)"
670 select DEFAULT_SGI_PARTITION
671 select DMA_NONCOHERENT
672 select GENERIC_ISA_DMA_SUPPORT_BROKEN
678 select SGI_HAS_INDYDOG
684 select SYS_HAS_CPU_R10000
686 # Disable EARLY_PRINTK for now since it leads to overwritten prom
687 # memory during early boot on some machines.
689 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
690 # for a more details discussion
692 # select SYS_HAS_EARLY_PRINTK
693 select SYS_SUPPORTS_64BIT_KERNEL
694 select SYS_SUPPORTS_BIG_ENDIAN
695 select MIPS_L1_CACHE_SHIFT_7
697 This is the SGI Indigo2 with R10000 processor. To compile a Linux
698 kernel that runs on these, say Y here.
707 select DMA_NONCOHERENT
710 select R5000_CPU_SCACHE
711 select RM7000_CPU_SCACHE
712 select SYS_HAS_CPU_R5000
713 select SYS_HAS_CPU_R10000 if BROKEN
714 select SYS_HAS_CPU_RM7000
715 select SYS_HAS_CPU_NEVADA
716 select SYS_SUPPORTS_64BIT_KERNEL
717 select SYS_SUPPORTS_BIG_ENDIAN
719 If you want this kernel to run on SGI O2 workstation, say Y here.
722 bool "Sibyte BCM91120C-CRhine"
725 select SIBYTE_BCM1120
727 select SYS_HAS_CPU_SB1
728 select SYS_SUPPORTS_BIG_ENDIAN
729 select SYS_SUPPORTS_LITTLE_ENDIAN
732 bool "Sibyte BCM91120x-Carmel"
735 select SIBYTE_BCM1120
737 select SYS_HAS_CPU_SB1
738 select SYS_SUPPORTS_BIG_ENDIAN
739 select SYS_SUPPORTS_LITTLE_ENDIAN
742 bool "Sibyte BCM91125C-CRhone"
745 select SIBYTE_BCM1125
747 select SYS_HAS_CPU_SB1
748 select SYS_SUPPORTS_BIG_ENDIAN
749 select SYS_SUPPORTS_HIGHMEM
750 select SYS_SUPPORTS_LITTLE_ENDIAN
753 bool "Sibyte BCM91125E-Rhone"
756 select SIBYTE_BCM1125H
758 select SYS_HAS_CPU_SB1
759 select SYS_SUPPORTS_BIG_ENDIAN
760 select SYS_SUPPORTS_LITTLE_ENDIAN
763 bool "Sibyte BCM91250A-SWARM"
766 select HAVE_PATA_PLATFORM
769 select SYS_HAS_CPU_SB1
770 select SYS_SUPPORTS_BIG_ENDIAN
771 select SYS_SUPPORTS_HIGHMEM
772 select SYS_SUPPORTS_LITTLE_ENDIAN
773 select ZONE_DMA32 if 64BIT
775 config SIBYTE_LITTLESUR
776 bool "Sibyte BCM91250C2-LittleSur"
779 select HAVE_PATA_PLATFORM
782 select SYS_HAS_CPU_SB1
783 select SYS_SUPPORTS_BIG_ENDIAN
784 select SYS_SUPPORTS_HIGHMEM
785 select SYS_SUPPORTS_LITTLE_ENDIAN
787 config SIBYTE_SENTOSA
788 bool "Sibyte BCM91250E-Sentosa"
793 select SYS_HAS_CPU_SB1
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_LITTLE_ENDIAN
798 bool "Sibyte BCM91480B-BigSur"
801 select NR_CPUS_DEFAULT_4
802 select SIBYTE_BCM1x80
804 select SYS_HAS_CPU_SB1
805 select SYS_SUPPORTS_BIG_ENDIAN
806 select SYS_SUPPORTS_HIGHMEM
807 select SYS_SUPPORTS_LITTLE_ENDIAN
808 select ZONE_DMA32 if 64BIT
811 bool "SNI RM200/300/400"
812 select FW_ARC if CPU_LITTLE_ENDIAN
813 select FW_ARC32 if CPU_LITTLE_ENDIAN
814 select FW_SNIPROM if CPU_BIG_ENDIAN
815 select ARCH_MAY_HAVE_PC_FDC
819 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
820 select DMA_NONCOHERENT
821 select GENERIC_ISA_DMA
822 select HAVE_PCSPKR_PLATFORM
829 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
830 select SYS_HAS_CPU_R4X00
831 select SYS_HAS_CPU_R5000
832 select SYS_HAS_CPU_R10000
833 select R5000_CPU_SCACHE
834 select SYS_HAS_EARLY_PRINTK
835 select SYS_SUPPORTS_32BIT_KERNEL
836 select SYS_SUPPORTS_64BIT_KERNEL
837 select SYS_SUPPORTS_BIG_ENDIAN
838 select SYS_SUPPORTS_HIGHMEM
839 select SYS_SUPPORTS_LITTLE_ENDIAN
841 The SNI RM200/300/400 are MIPS-based machines manufactured by
842 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
843 Technology and now in turn merged with Fujitsu. Say Y here to
844 support this machine type.
847 bool "Toshiba TX39 series based machines"
850 bool "Toshiba TX49 series based machines"
852 config MIKROTIK_RB532
853 bool "Mikrotik RB532 boards"
856 select DMA_NONCOHERENT
859 select SYS_HAS_CPU_MIPS32_R1
860 select SYS_SUPPORTS_32BIT_KERNEL
861 select SYS_SUPPORTS_LITTLE_ENDIAN
865 select MIPS_L1_CACHE_SHIFT_4
867 Support the Mikrotik(tm) RouterBoard 532 series,
868 based on the IDT RC32434 SoC.
870 config CAVIUM_OCTEON_SOC
871 bool "Cavium Networks Octeon SoC based boards"
873 select ARCH_PHYS_ADDR_T_64BIT
875 select SYS_SUPPORTS_64BIT_KERNEL
876 select SYS_SUPPORTS_BIG_ENDIAN
878 select EDAC_ATOMIC_SCRUB
879 select SYS_SUPPORTS_LITTLE_ENDIAN
880 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
881 select SYS_HAS_EARLY_PRINTK
882 select SYS_HAS_CPU_CAVIUM_OCTEON
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
1115 bool "Support for hot-pluggable CPUs"
1116 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1118 Say Y here to allow turning CPUs off and on. CPUs can be
1119 controlled through /sys/devices/system/cpu.
1120 (Note: power management support will enable this option
1121 automatically on SMP systems. )
1122 Say N if you want to disable CPU hotplug.
1124 config SYS_SUPPORTS_HOTPLUG_CPU
1127 config MIPS_BONITO64
1142 config NO_IOPORT_MAP
1148 config GENERIC_ISA_DMA
1150 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1153 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1155 select GENERIC_ISA_DMA
1160 config HOLES_IN_ZONE
1163 config SYS_SUPPORTS_RELOCATABLE
1166 Selected if the platform supports relocating the kernel.
1167 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1168 to allow access to command line and entropy sources.
1171 # Endianness selection. Sufficiently obscure so many users don't know what to
1172 # answer,so we try hard to limit the available choices. Also the use of a
1173 # choice statement should be more obvious to the user.
1176 prompt "Endianness selection"
1178 Some MIPS machines can be configured for either little or big endian
1179 byte order. These modes require different kernels and a different
1180 Linux distribution. In general there is one preferred byteorder for a
1181 particular system but some systems are just as commonly used in the
1182 one or the other endianness.
1184 config CPU_BIG_ENDIAN
1186 depends on SYS_SUPPORTS_BIG_ENDIAN
1188 config CPU_LITTLE_ENDIAN
1189 bool "Little endian"
1190 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1197 config SYS_SUPPORTS_APM_EMULATION
1200 config SYS_SUPPORTS_BIG_ENDIAN
1203 config SYS_SUPPORTS_LITTLE_ENDIAN
1206 config SYS_SUPPORTS_HUGETLBFS
1208 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1211 config MIPS_HUGE_TLB_SUPPORT
1212 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1229 config PCI_GT64XXX_PCI0
1232 config NO_EXCEPT_FILL
1239 select DMA_NONCOHERENT
1241 select SWAP_IO_SPACE
1242 select SYS_HAS_CPU_R5500
1243 select SYS_SUPPORTS_32BIT_KERNEL
1244 select SYS_SUPPORTS_64BIT_KERNEL
1245 select SYS_SUPPORTS_BIG_ENDIAN
1252 select DMA_NONCOHERENT
1253 select SYS_HAS_CPU_MIPS32_R2
1254 select SYS_SUPPORTS_32BIT_KERNEL
1255 select SYS_SUPPORTS_LITTLE_ENDIAN
1256 select SYS_SUPPORTS_BIG_ENDIAN
1257 select SYS_SUPPORTS_MIPS16
1258 select CPU_MIPSR2_IRQ_VI
1267 config SWAP_IO_SPACE
1270 config SGI_HAS_INDYDOG
1282 config SGI_HAS_ZILOG
1285 config SGI_HAS_I8042
1288 config DEFAULT_SGI_PARTITION
1300 config MIPS_L1_CACHE_SHIFT_4
1303 config MIPS_L1_CACHE_SHIFT_5
1306 config MIPS_L1_CACHE_SHIFT_6
1309 config MIPS_L1_CACHE_SHIFT_7
1312 config MIPS_L1_CACHE_SHIFT
1314 default "7" if MIPS_L1_CACHE_SHIFT_7
1315 default "6" if MIPS_L1_CACHE_SHIFT_6
1316 default "5" if MIPS_L1_CACHE_SHIFT_5
1317 default "4" if MIPS_L1_CACHE_SHIFT_4
1320 config HAVE_STD_PC_SERIAL_PORT
1324 bool "ARC console support"
1325 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1329 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1334 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1343 menu "CPU selection"
1349 config CPU_LOONGSON3
1350 bool "Loongson 3 CPU"
1351 depends on SYS_HAS_CPU_LOONGSON3
1352 select CPU_SUPPORTS_64BIT_KERNEL
1353 select CPU_SUPPORTS_HIGHMEM
1354 select CPU_SUPPORTS_HUGEPAGES
1355 select WEAK_ORDERING
1356 select WEAK_REORDERING_BEYOND_LLSC
1357 select MIPS_PGD_C0_CONTEXT
1360 The Loongson 3 processor implements the MIPS64R2 instruction
1361 set with many extensions.
1363 config LOONGSON3_ENHANCEMENT
1364 bool "New Loongson 3 CPU Enhancements"
1367 select CPU_HAS_PREFETCH
1368 depends on CPU_LOONGSON3
1370 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1371 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1372 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1373 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1374 Fast TLB refill support, etc.
1376 This option enable those enhancements which are not probed at run
1377 time. If you want a generic kernel to run on all Loongson 3 machines,
1378 please say 'N' here. If you want a high-performance kernel to run on
1379 new Loongson 3 machines only, please say 'Y' here.
1381 config CPU_LOONGSON2E
1383 depends on SYS_HAS_CPU_LOONGSON2E
1384 select CPU_LOONGSON2
1386 The Loongson 2E processor implements the MIPS III instruction set
1387 with many extensions.
1389 It has an internal FPGA northbridge, which is compatible to
1392 config CPU_LOONGSON2F
1394 depends on SYS_HAS_CPU_LOONGSON2F
1395 select CPU_LOONGSON2
1398 The Loongson 2F processor implements the MIPS III instruction set
1399 with many extensions.
1401 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1402 have a similar programming interface with FPGA northbridge used in
1405 config CPU_LOONGSON1B
1407 depends on SYS_HAS_CPU_LOONGSON1B
1408 select CPU_LOONGSON1
1409 select ARCH_WANT_OPTIONAL_GPIOLIB
1410 select LEDS_GPIO_REGISTER
1412 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1413 release 2 instruction set.
1415 config CPU_MIPS32_R1
1416 bool "MIPS32 Release 1"
1417 depends on SYS_HAS_CPU_MIPS32_R1
1418 select CPU_HAS_PREFETCH
1419 select CPU_SUPPORTS_32BIT_KERNEL
1420 select CPU_SUPPORTS_HIGHMEM
1422 Choose this option to build a kernel for release 1 or later of the
1423 MIPS32 architecture. Most modern embedded systems with a 32-bit
1424 MIPS processor are based on a MIPS32 processor. If you know the
1425 specific type of processor in your system, choose those that one
1426 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1427 Release 2 of the MIPS32 architecture is available since several
1428 years so chances are you even have a MIPS32 Release 2 processor
1429 in which case you should choose CPU_MIPS32_R2 instead for better
1432 config CPU_MIPS32_R2
1433 bool "MIPS32 Release 2"
1434 depends on SYS_HAS_CPU_MIPS32_R2
1435 select CPU_HAS_PREFETCH
1436 select CPU_SUPPORTS_32BIT_KERNEL
1437 select CPU_SUPPORTS_HIGHMEM
1438 select CPU_SUPPORTS_MSA
1441 Choose this option to build a kernel for release 2 or later of the
1442 MIPS32 architecture. Most modern embedded systems with a 32-bit
1443 MIPS processor are based on a MIPS32 processor. If you know the
1444 specific type of processor in your system, choose those that one
1445 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1447 config CPU_MIPS32_R6
1448 bool "MIPS32 Release 6"
1449 depends on SYS_HAS_CPU_MIPS32_R6
1450 select CPU_HAS_PREFETCH
1451 select CPU_SUPPORTS_32BIT_KERNEL
1452 select CPU_SUPPORTS_HIGHMEM
1453 select CPU_SUPPORTS_MSA
1456 select MIPS_O32_FP64_SUPPORT
1458 Choose this option to build a kernel for release 6 or later of the
1459 MIPS32 architecture. New MIPS processors, starting with the Warrior
1460 family, are based on a MIPS32r6 processor. If you own an older
1461 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1463 config CPU_MIPS64_R1
1464 bool "MIPS64 Release 1"
1465 depends on SYS_HAS_CPU_MIPS64_R1
1466 select CPU_HAS_PREFETCH
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_64BIT_KERNEL
1469 select CPU_SUPPORTS_HIGHMEM
1470 select CPU_SUPPORTS_HUGEPAGES
1472 Choose this option to build a kernel for release 1 or later of the
1473 MIPS64 architecture. Many modern embedded systems with a 64-bit
1474 MIPS processor are based on a MIPS64 processor. If you know the
1475 specific type of processor in your system, choose those that one
1476 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1477 Release 2 of the MIPS64 architecture is available since several
1478 years so chances are you even have a MIPS64 Release 2 processor
1479 in which case you should choose CPU_MIPS64_R2 instead for better
1482 config CPU_MIPS64_R2
1483 bool "MIPS64 Release 2"
1484 depends on SYS_HAS_CPU_MIPS64_R2
1485 select CPU_HAS_PREFETCH
1486 select CPU_SUPPORTS_32BIT_KERNEL
1487 select CPU_SUPPORTS_64BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1489 select CPU_SUPPORTS_HUGEPAGES
1490 select CPU_SUPPORTS_MSA
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
1511 Choose this option to build a kernel for release 6 or later of the
1512 MIPS64 architecture. New MIPS processors, starting with the Warrior
1513 family, are based on a MIPS64r6 processor. If you own an older
1514 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1518 depends on SYS_HAS_CPU_R3000
1520 select CPU_SUPPORTS_32BIT_KERNEL
1521 select CPU_SUPPORTS_HIGHMEM
1523 Please make sure to pick the right CPU type. Linux/MIPS is not
1524 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1525 *not* work on R4000 machines and vice versa. However, since most
1526 of the supported machines have an R4000 (or similar) CPU, R4x00
1527 might be a safe bet. If the resulting kernel does not work,
1528 try to recompile with R3000.
1532 depends on SYS_HAS_CPU_TX39XX
1533 select CPU_SUPPORTS_32BIT_KERNEL
1537 depends on SYS_HAS_CPU_VR41XX
1538 select CPU_SUPPORTS_32BIT_KERNEL
1539 select CPU_SUPPORTS_64BIT_KERNEL
1541 The options selects support for the NEC VR4100 series of processors.
1542 Only choose this option if you have one of these processors as a
1543 kernel built with this option will not run on any other type of
1544 processor or vice versa.
1548 depends on SYS_HAS_CPU_R4300
1549 select CPU_SUPPORTS_32BIT_KERNEL
1550 select CPU_SUPPORTS_64BIT_KERNEL
1552 MIPS Technologies R4300-series processors.
1556 depends on SYS_HAS_CPU_R4X00
1557 select CPU_SUPPORTS_32BIT_KERNEL
1558 select CPU_SUPPORTS_64BIT_KERNEL
1559 select CPU_SUPPORTS_HUGEPAGES
1561 MIPS Technologies R4000-series processors other than 4300, including
1562 the R4000, R4400, R4600, and 4700.
1566 depends on SYS_HAS_CPU_TX49XX
1567 select CPU_HAS_PREFETCH
1568 select CPU_SUPPORTS_32BIT_KERNEL
1569 select CPU_SUPPORTS_64BIT_KERNEL
1570 select CPU_SUPPORTS_HUGEPAGES
1574 depends on SYS_HAS_CPU_R5000
1575 select CPU_SUPPORTS_32BIT_KERNEL
1576 select CPU_SUPPORTS_64BIT_KERNEL
1577 select CPU_SUPPORTS_HUGEPAGES
1579 MIPS Technologies R5000-series processors other than the Nevada.
1583 depends on SYS_HAS_CPU_R5432
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select CPU_SUPPORTS_64BIT_KERNEL
1586 select CPU_SUPPORTS_HUGEPAGES
1590 depends on SYS_HAS_CPU_R5500
1591 select CPU_SUPPORTS_32BIT_KERNEL
1592 select CPU_SUPPORTS_64BIT_KERNEL
1593 select CPU_SUPPORTS_HUGEPAGES
1595 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1600 depends on SYS_HAS_CPU_R6000
1601 select CPU_SUPPORTS_32BIT_KERNEL
1603 MIPS Technologies R6000 and R6000A series processors. Note these
1604 processors are extremely rare and the support for them is incomplete.
1608 depends on SYS_HAS_CPU_NEVADA
1609 select CPU_SUPPORTS_32BIT_KERNEL
1610 select CPU_SUPPORTS_64BIT_KERNEL
1611 select CPU_SUPPORTS_HUGEPAGES
1613 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1617 depends on SYS_HAS_CPU_R8000
1618 select CPU_HAS_PREFETCH
1619 select CPU_SUPPORTS_64BIT_KERNEL
1621 MIPS Technologies R8000 processors. Note these processors are
1622 uncommon and the support for them is incomplete.
1626 depends on SYS_HAS_CPU_R10000
1627 select CPU_HAS_PREFETCH
1628 select CPU_SUPPORTS_32BIT_KERNEL
1629 select CPU_SUPPORTS_64BIT_KERNEL
1630 select CPU_SUPPORTS_HIGHMEM
1631 select CPU_SUPPORTS_HUGEPAGES
1633 MIPS Technologies R10000-series processors.
1637 depends on SYS_HAS_CPU_RM7000
1638 select CPU_HAS_PREFETCH
1639 select CPU_SUPPORTS_32BIT_KERNEL
1640 select CPU_SUPPORTS_64BIT_KERNEL
1641 select CPU_SUPPORTS_HIGHMEM
1642 select CPU_SUPPORTS_HUGEPAGES
1646 depends on SYS_HAS_CPU_SB1
1647 select CPU_SUPPORTS_32BIT_KERNEL
1648 select CPU_SUPPORTS_64BIT_KERNEL
1649 select CPU_SUPPORTS_HIGHMEM
1650 select CPU_SUPPORTS_HUGEPAGES
1651 select WEAK_ORDERING
1653 config CPU_CAVIUM_OCTEON
1654 bool "Cavium Octeon processor"
1655 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1656 select CPU_HAS_PREFETCH
1657 select CPU_SUPPORTS_64BIT_KERNEL
1658 select WEAK_ORDERING
1659 select CPU_SUPPORTS_HIGHMEM
1660 select CPU_SUPPORTS_HUGEPAGES
1661 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1662 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1663 select MIPS_L1_CACHE_SHIFT_7
1665 The Cavium Octeon processor is a highly integrated chip containing
1666 many ethernet hardware widgets for networking tasks. The processor
1667 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1668 Full details can be found at http://www.caviumnetworks.com.
1671 bool "Broadcom BMIPS"
1672 depends on SYS_HAS_CPU_BMIPS
1674 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1675 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1676 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1677 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1678 select CPU_SUPPORTS_32BIT_KERNEL
1679 select DMA_NONCOHERENT
1681 select SWAP_IO_SPACE
1682 select WEAK_ORDERING
1683 select CPU_SUPPORTS_HIGHMEM
1684 select CPU_HAS_PREFETCH
1686 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1689 bool "Netlogic XLR SoC"
1690 depends on SYS_HAS_CPU_XLR
1691 select CPU_SUPPORTS_32BIT_KERNEL
1692 select CPU_SUPPORTS_64BIT_KERNEL
1693 select CPU_SUPPORTS_HIGHMEM
1694 select CPU_SUPPORTS_HUGEPAGES
1695 select WEAK_ORDERING
1696 select WEAK_REORDERING_BEYOND_LLSC
1698 Netlogic Microsystems XLR/XLS processors.
1701 bool "Netlogic XLP SoC"
1702 depends on SYS_HAS_CPU_XLP
1703 select CPU_SUPPORTS_32BIT_KERNEL
1704 select CPU_SUPPORTS_64BIT_KERNEL
1705 select CPU_SUPPORTS_HIGHMEM
1706 select WEAK_ORDERING
1707 select WEAK_REORDERING_BEYOND_LLSC
1708 select CPU_HAS_PREFETCH
1710 select CPU_SUPPORTS_HUGEPAGES
1711 select MIPS_ASID_BITS_VARIABLE
1713 Netlogic Microsystems XLP processors.
1716 config CPU_MIPS32_3_5_FEATURES
1717 bool "MIPS32 Release 3.5 Features"
1718 depends on SYS_HAS_CPU_MIPS32_R3_5
1719 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1721 Choose this option to build a kernel for release 2 or later of the
1722 MIPS32 architecture including features from the 3.5 release such as
1723 support for Enhanced Virtual Addressing (EVA).
1725 config CPU_MIPS32_3_5_EVA
1726 bool "Enhanced Virtual Addressing (EVA)"
1727 depends on CPU_MIPS32_3_5_FEATURES
1731 Choose this option if you want to enable the Enhanced Virtual
1732 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1733 One of its primary benefits is an increase in the maximum size
1734 of lowmem (up to 3GB). If unsure, say 'N' here.
1736 config CPU_MIPS32_R5_FEATURES
1737 bool "MIPS32 Release 5 Features"
1738 depends on SYS_HAS_CPU_MIPS32_R5
1739 depends on CPU_MIPS32_R2
1741 Choose this option to build a kernel for release 2 or later of the
1742 MIPS32 architecture including features from release 5 such as
1743 support for Extended Physical Addressing (XPA).
1745 config CPU_MIPS32_R5_XPA
1746 bool "Extended Physical Addressing (XPA)"
1747 depends on CPU_MIPS32_R5_FEATURES
1749 depends on !PAGE_SIZE_4KB
1750 depends on SYS_SUPPORTS_HIGHMEM
1753 select ARCH_PHYS_ADDR_T_64BIT
1756 Choose this option if you want to enable the Extended Physical
1757 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1758 benefit is to increase physical addressing equal to or greater
1759 than 40 bits. Note that this has the side effect of turning on
1760 64-bit addressing which in turn makes the PTEs 64-bit in size.
1761 If unsure, say 'N' here.
1764 config CPU_NOP_WORKAROUNDS
1767 config CPU_JUMP_WORKAROUNDS
1770 config CPU_LOONGSON2F_WORKAROUNDS
1771 bool "Loongson 2F Workarounds"
1773 select CPU_NOP_WORKAROUNDS
1774 select CPU_JUMP_WORKAROUNDS
1776 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1777 require workarounds. Without workarounds the system may hang
1778 unexpectedly. For more information please refer to the gas
1779 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1781 Loongson 2F03 and later have fixed these issues and no workarounds
1782 are needed. The workarounds have no significant side effect on them
1783 but may decrease the performance of the system so this option should
1784 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1787 If unsure, please say Y.
1788 endif # CPU_LOONGSON2F
1790 config SYS_SUPPORTS_ZBOOT
1792 select HAVE_KERNEL_GZIP
1793 select HAVE_KERNEL_BZIP2
1794 select HAVE_KERNEL_LZ4
1795 select HAVE_KERNEL_LZMA
1796 select HAVE_KERNEL_LZO
1797 select HAVE_KERNEL_XZ
1799 config SYS_SUPPORTS_ZBOOT_UART16550
1801 select SYS_SUPPORTS_ZBOOT
1803 config SYS_SUPPORTS_ZBOOT_UART_PROM
1805 select SYS_SUPPORTS_ZBOOT
1807 config CPU_LOONGSON2
1809 select CPU_SUPPORTS_32BIT_KERNEL
1810 select CPU_SUPPORTS_64BIT_KERNEL
1811 select CPU_SUPPORTS_HIGHMEM
1812 select CPU_SUPPORTS_HUGEPAGES
1814 config CPU_LOONGSON1
1818 select CPU_HAS_PREFETCH
1819 select CPU_SUPPORTS_32BIT_KERNEL
1820 select CPU_SUPPORTS_HIGHMEM
1821 select CPU_SUPPORTS_CPUFREQ
1823 config CPU_BMIPS32_3300
1824 select SMP_UP if SMP
1827 config CPU_BMIPS4350
1829 select SYS_SUPPORTS_SMP
1830 select SYS_SUPPORTS_HOTPLUG_CPU
1832 config CPU_BMIPS4380
1834 select MIPS_L1_CACHE_SHIFT_6
1835 select SYS_SUPPORTS_SMP
1836 select SYS_SUPPORTS_HOTPLUG_CPU
1839 config CPU_BMIPS5000
1841 select MIPS_CPU_SCACHE
1842 select MIPS_L1_CACHE_SHIFT_7
1843 select SYS_SUPPORTS_SMP
1844 select SYS_SUPPORTS_HOTPLUG_CPU
1847 config SYS_HAS_CPU_LOONGSON3
1849 select CPU_SUPPORTS_CPUFREQ
1852 config SYS_HAS_CPU_LOONGSON2E
1855 config SYS_HAS_CPU_LOONGSON2F
1857 select CPU_SUPPORTS_CPUFREQ
1858 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1859 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1861 config SYS_HAS_CPU_LOONGSON1B
1864 config SYS_HAS_CPU_MIPS32_R1
1867 config SYS_HAS_CPU_MIPS32_R2
1870 config SYS_HAS_CPU_MIPS32_R3_5
1873 config SYS_HAS_CPU_MIPS32_R5
1876 config SYS_HAS_CPU_MIPS32_R6
1879 config SYS_HAS_CPU_MIPS64_R1
1882 config SYS_HAS_CPU_MIPS64_R2
1885 config SYS_HAS_CPU_MIPS64_R6
1888 config SYS_HAS_CPU_R3000
1891 config SYS_HAS_CPU_TX39XX
1894 config SYS_HAS_CPU_VR41XX
1897 config SYS_HAS_CPU_R4300
1900 config SYS_HAS_CPU_R4X00
1903 config SYS_HAS_CPU_TX49XX
1906 config SYS_HAS_CPU_R5000
1909 config SYS_HAS_CPU_R5432
1912 config SYS_HAS_CPU_R5500
1915 config SYS_HAS_CPU_R6000
1918 config SYS_HAS_CPU_NEVADA
1921 config SYS_HAS_CPU_R8000
1924 config SYS_HAS_CPU_R10000
1927 config SYS_HAS_CPU_RM7000
1930 config SYS_HAS_CPU_SB1
1933 config SYS_HAS_CPU_CAVIUM_OCTEON
1936 config SYS_HAS_CPU_BMIPS
1939 config SYS_HAS_CPU_BMIPS32_3300
1941 select SYS_HAS_CPU_BMIPS
1943 config SYS_HAS_CPU_BMIPS4350
1945 select SYS_HAS_CPU_BMIPS
1947 config SYS_HAS_CPU_BMIPS4380
1949 select SYS_HAS_CPU_BMIPS
1951 config SYS_HAS_CPU_BMIPS5000
1953 select SYS_HAS_CPU_BMIPS
1955 config SYS_HAS_CPU_XLR
1958 config SYS_HAS_CPU_XLP
1961 config MIPS_MALTA_PM
1962 depends on MIPS_MALTA
1968 # CPU may reorder R->R, R->W, W->R, W->W
1969 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1971 config WEAK_ORDERING
1975 # CPU may reorder reads and writes beyond LL/SC
1976 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1978 config WEAK_REORDERING_BEYOND_LLSC
1983 # These two indicate any level of the MIPS32 and MIPS64 architecture
1987 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1991 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1994 # These two indicate the revision of the architecture, either Release 1 or Release 2
1998 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2002 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2008 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2010 select HAVE_ARCH_BITREVERSE
2011 select MIPS_ASID_BITS_VARIABLE
2020 config SYS_SUPPORTS_32BIT_KERNEL
2022 config SYS_SUPPORTS_64BIT_KERNEL
2024 config CPU_SUPPORTS_32BIT_KERNEL
2026 config CPU_SUPPORTS_64BIT_KERNEL
2028 config CPU_SUPPORTS_CPUFREQ
2030 config CPU_SUPPORTS_ADDRWINCFG
2032 config CPU_SUPPORTS_HUGEPAGES
2034 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2036 config MIPS_PGD_C0_CONTEXT
2038 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2041 # Set to y for ptrace access to watch registers.
2043 config HARDWARE_WATCHPOINTS
2045 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2050 prompt "Kernel code model"
2052 You should only select this option if you have a workload that
2053 actually benefits from 64-bit processing or if your machine has
2054 large memory. You will only be presented a single option in this
2055 menu if your system does not support both 32-bit and 64-bit kernels.
2058 bool "32-bit kernel"
2059 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2062 Select this option if you want to build a 32-bit kernel.
2065 bool "64-bit kernel"
2066 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2068 Select this option if you want to build a 64-bit kernel.
2073 bool "KVM Guest Kernel"
2074 depends on BROKEN_ON_SMP
2076 Select this option if building a guest kernel for KVM (Trap & Emulate)
2079 config KVM_GUEST_TIMER_FREQ
2080 int "Count/Compare Timer Frequency (MHz)"
2081 depends on KVM_GUEST
2084 Set this to non-zero if building a guest kernel for KVM to skip RTC
2085 emulation when determining guest CPU Frequency. Instead, the guest's
2086 timer frequency is specified directly.
2088 config MIPS_VA_BITS_48
2089 bool "48 bits virtual memory"
2092 Support a maximum at least 48 bits of application virtual memory.
2093 Default is 40 bits or less, depending on the CPU.
2094 This option result in a small memory overhead for page tables.
2095 This option is only supported with 16k and 64k page sizes.
2099 prompt "Kernel page size"
2100 default PAGE_SIZE_4KB
2102 config PAGE_SIZE_4KB
2104 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2105 depends on !MIPS_VA_BITS_48
2107 This option select the standard 4kB Linux page size. On some
2108 R3000-family processors this is the only available page size. Using
2109 4kB page size will minimize memory consumption and is therefore
2110 recommended for low memory systems.
2112 config PAGE_SIZE_8KB
2114 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2115 depends on !MIPS_VA_BITS_48
2117 Using 8kB page size will result in higher performance kernel at
2118 the price of higher memory consumption. This option is available
2119 only on R8000 and cnMIPS processors. Note that you will need a
2120 suitable Linux distribution to support this.
2122 config PAGE_SIZE_16KB
2124 depends on !CPU_R3000 && !CPU_TX39XX
2126 Using 16kB page size will result in higher performance kernel at
2127 the price of higher memory consumption. This option is available on
2128 all non-R3000 family processors. Note that you will need a suitable
2129 Linux distribution to support this.
2131 config PAGE_SIZE_32KB
2133 depends on CPU_CAVIUM_OCTEON
2134 depends on !MIPS_VA_BITS_48
2136 Using 32kB page size will result in higher performance kernel at
2137 the price of higher memory consumption. This option is available
2138 only on cnMIPS cores. Note that you will need a suitable Linux
2139 distribution to support this.
2141 config PAGE_SIZE_64KB
2143 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2145 Using 64kB page size will result in higher performance kernel at
2146 the price of higher memory consumption. This option is available on
2147 all non-R3000 family processor. Not that at the time of this
2148 writing this option is still high experimental.
2152 config FORCE_MAX_ZONEORDER
2153 int "Maximum zone order"
2154 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2155 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2156 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2157 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2158 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2159 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2163 The kernel memory allocator divides physically contiguous memory
2164 blocks into "zones", where each zone is a power of two number of
2165 pages. This option selects the largest power of two that the kernel
2166 keeps in the memory allocator. If you need to allocate very large
2167 blocks of physically contiguous memory, then you may need to
2168 increase this value.
2170 This config option is actually maximum order plus one. For example,
2171 a value of 11 means that the largest free memory block is 2^10 pages.
2173 The page size is not necessarily 4KB. Keep this in mind
2174 when choosing a value for this option.
2179 config IP22_CPU_SCACHE
2184 # Support for a MIPS32 / MIPS64 style S-caches
2186 config MIPS_CPU_SCACHE
2190 config R5000_CPU_SCACHE
2194 config RM7000_CPU_SCACHE
2198 config SIBYTE_DMA_PAGEOPS
2199 bool "Use DMA to clear/copy pages"
2202 Instead of using the CPU to zero and copy pages, use a Data Mover
2203 channel. These DMA channels are otherwise unused by the standard
2204 SiByte Linux port. Seems to give a small performance benefit.
2206 config CPU_HAS_PREFETCH
2209 config CPU_GENERIC_DUMP_TLB
2211 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2215 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2217 config CPU_R4K_CACHE_TLB
2219 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2222 bool "MIPS MT SMP support (1 TC on each available VPE)"
2223 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2224 select CPU_MIPSR2_IRQ_VI
2225 select CPU_MIPSR2_IRQ_EI
2230 select SYS_SUPPORTS_SMP
2231 select SYS_SUPPORTS_SCHED_SMT
2232 select MIPS_PERF_SHARED_TC_COUNTERS
2234 This is a kernel model which is known as SMVP. This is supported
2235 on cores with the MT ASE and uses the available VPEs to implement
2236 virtual processors which supports SMP. This is equivalent to the
2237 Intel Hyperthreading feature. For further information go to
2238 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2244 bool "SMT (multithreading) scheduler support"
2245 depends on SYS_SUPPORTS_SCHED_SMT
2248 SMT scheduler support improves the CPU scheduler's decision making
2249 when dealing with MIPS MT enabled cores at a cost of slightly
2250 increased overhead in some places. If unsure say N here.
2252 config SYS_SUPPORTS_SCHED_SMT
2255 config SYS_SUPPORTS_MULTITHREADING
2258 config MIPS_MT_FPAFF
2259 bool "Dynamic FPU affinity for FP-intensive threads"
2261 depends on MIPS_MT_SMP
2263 config MIPSR2_TO_R6_EMULATOR
2264 bool "MIPS R2-to-R6 emulator"
2265 depends on CPU_MIPSR6 && !SMP
2268 Choose this option if you want to run non-R6 MIPS userland code.
2269 Even if you say 'Y' here, the emulator will still be disabled by
2270 default. You can enable it using the 'mipsr2emu' kernel option.
2271 The only reason this is a build-time option is to save ~14K from the
2273 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2274 depends on SMP && CPU_MIPSR6
2276 config MIPS_VPE_LOADER
2277 bool "VPE loader support."
2278 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2279 select CPU_MIPSR2_IRQ_VI
2280 select CPU_MIPSR2_IRQ_EI
2283 Includes a loader for loading an elf relocatable object
2284 onto another VPE and running it.
2286 config MIPS_VPE_LOADER_CMP
2289 depends on MIPS_VPE_LOADER && MIPS_CMP
2291 config MIPS_VPE_LOADER_MT
2294 depends on MIPS_VPE_LOADER && !MIPS_CMP
2296 config MIPS_VPE_LOADER_TOM
2297 bool "Load VPE program into memory hidden from linux"
2298 depends on MIPS_VPE_LOADER
2301 The loader can use memory that is present but has been hidden from
2302 Linux using the kernel command line option "mem=xxMB". It's up to
2303 you to ensure the amount you put in the option and the space your
2304 program requires is less or equal to the amount physically present.
2306 config MIPS_VPE_APSP_API
2307 bool "Enable support for AP/SP API (RTLX)"
2308 depends on MIPS_VPE_LOADER
2311 config MIPS_VPE_APSP_API_CMP
2314 depends on MIPS_VPE_APSP_API && MIPS_CMP
2316 config MIPS_VPE_APSP_API_MT
2319 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2322 bool "MIPS CMP framework support (DEPRECATED)"
2323 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2326 select SYS_SUPPORTS_SMP
2327 select WEAK_ORDERING
2330 Select this if you are using a bootloader which implements the "CMP
2331 framework" protocol (ie. YAMON) and want your kernel to make use of
2332 its ability to start secondary CPUs.
2334 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2338 bool "MIPS Coherent Processing System support"
2339 depends on SYS_SUPPORTS_MIPS_CPS
2342 select MIPS_CPS_PM if HOTPLUG_CPU
2344 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2345 select SYS_SUPPORTS_HOTPLUG_CPU
2346 select SYS_SUPPORTS_SMP
2347 select WEAK_ORDERING
2349 Select this if you wish to run an SMP kernel across multiple cores
2350 within a MIPS Coherent Processing System. When this option is
2351 enabled the kernel will probe for other cores and boot them with
2352 no external assistance. It is safe to enable this when hardware
2353 support is unavailable.
2366 config SB1_PASS_2_WORKAROUNDS
2368 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2371 config SB1_PASS_2_1_WORKAROUNDS
2373 depends on CPU_SB1 && CPU_SB1_PASS_2
2377 config ARCH_PHYS_ADDR_T_64BIT
2381 prompt "SmartMIPS or microMIPS ASE support"
2383 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2386 Select this if you want neither microMIPS nor SmartMIPS support
2388 config CPU_HAS_SMARTMIPS
2389 depends on SYS_SUPPORTS_SMARTMIPS
2392 SmartMIPS is a extension of the MIPS32 architecture aimed at
2393 increased security at both hardware and software level for
2394 smartcards. Enabling this option will allow proper use of the
2395 SmartMIPS instructions by Linux applications. However a kernel with
2396 this option will not work on a MIPS core without SmartMIPS core. If
2397 you don't know you probably don't have SmartMIPS and should say N
2400 config CPU_MICROMIPS
2401 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2404 When this option is enabled the kernel will be built using the
2410 bool "Support for the MIPS SIMD Architecture"
2411 depends on CPU_SUPPORTS_MSA
2412 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2414 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2415 and a set of SIMD instructions to operate on them. When this option
2416 is enabled the kernel will support allocating & switching MSA
2417 vector register contexts. If you know that your kernel will only be
2418 running on CPUs which do not support MSA or that your userland will
2419 not be making use of it then you may wish to say N here to reduce
2420 the size & complexity of your kernel.
2434 # Vectored interrupt mode is an R2 feature
2436 config CPU_MIPSR2_IRQ_VI
2440 # Extended interrupt mode is an R2 feature
2442 config CPU_MIPSR2_IRQ_EI
2447 depends on !CPU_R3000
2453 config CPU_DADDI_WORKAROUNDS
2456 config CPU_R4000_WORKAROUNDS
2458 select CPU_R4400_WORKAROUNDS
2460 config CPU_R4400_WORKAROUNDS
2463 config MIPS_ASID_SHIFT
2465 default 6 if CPU_R3000 || CPU_TX39XX
2466 default 4 if CPU_R8000
2469 config MIPS_ASID_BITS
2471 default 0 if MIPS_ASID_BITS_VARIABLE
2472 default 6 if CPU_R3000 || CPU_TX39XX
2475 config MIPS_ASID_BITS_VARIABLE
2479 # - Highmem only makes sense for the 32-bit kernel.
2480 # - The current highmem code will only work properly on physically indexed
2481 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2482 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2483 # moment we protect the user and offer the highmem option only on machines
2484 # where it's known to be safe. This will not offer highmem on a few systems
2485 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2486 # indexed CPUs but we're playing safe.
2487 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2488 # know they might have memory configurations that could make use of highmem
2492 bool "High Memory Support"
2493 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2495 config CPU_SUPPORTS_HIGHMEM
2498 config SYS_SUPPORTS_HIGHMEM
2501 config SYS_SUPPORTS_SMARTMIPS
2504 config SYS_SUPPORTS_MICROMIPS
2507 config SYS_SUPPORTS_MIPS16
2510 This option must be set if a kernel might be executed on a MIPS16-
2511 enabled CPU even if MIPS16 is not actually being used. In other
2512 words, it makes the kernel MIPS16-tolerant.
2514 config CPU_SUPPORTS_MSA
2517 config ARCH_FLATMEM_ENABLE
2519 depends on !NUMA && !CPU_LOONGSON2
2521 config ARCH_DISCONTIGMEM_ENABLE
2523 default y if SGI_IP27
2525 Say Y to support efficient handling of discontiguous physical memory,
2526 for architectures which are either NUMA (Non-Uniform Memory Access)
2527 or have huge holes in the physical address space for other reasons.
2528 See <file:Documentation/vm/numa> for more.
2530 config ARCH_SPARSEMEM_ENABLE
2532 select SPARSEMEM_STATIC
2536 depends on SYS_SUPPORTS_NUMA
2538 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2539 Access). This option improves performance on systems with more
2540 than two nodes; on two node systems it is generally better to
2541 leave it disabled; on single node systems disable this option
2544 config SYS_SUPPORTS_NUMA
2548 bool "Relocatable kernel"
2549 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2551 This builds a kernel image that retains relocation information
2552 so it can be loaded someplace besides the default 1MB.
2553 The relocations make the kernel binary about 15% larger,
2554 but are discarded at runtime
2556 config RELOCATION_TABLE_SIZE
2557 hex "Relocation table size"
2558 depends on RELOCATABLE
2559 range 0x0 0x01000000
2560 default "0x00100000"
2562 A table of relocation data will be appended to the kernel binary
2563 and parsed at boot to fix up the relocated kernel.
2565 This option allows the amount of space reserved for the table to be
2566 adjusted, although the default of 1Mb should be ok in most cases.
2568 The build will fail and a valid size suggested if this is too small.
2570 If unsure, leave at the default value.
2572 config RANDOMIZE_BASE
2573 bool "Randomize the address of the kernel image"
2574 depends on RELOCATABLE
2576 Randomizes the physical and virtual address at which the
2577 kernel image is loaded, as a security feature that
2578 deters exploit attempts relying on knowledge of the location
2579 of kernel internals.
2581 Entropy is generated using any coprocessor 0 registers available.
2583 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2587 config RANDOMIZE_BASE_MAX_OFFSET
2588 hex "Maximum kASLR offset" if EXPERT
2589 depends on RANDOMIZE_BASE
2590 range 0x0 0x40000000 if EVA || 64BIT
2591 range 0x0 0x08000000
2592 default "0x01000000"
2594 When kASLR is active, this provides the maximum offset that will
2595 be applied to the kernel image. It should be set according to the
2596 amount of physical RAM available in the target system minus
2597 PHYSICAL_START and must be a power of 2.
2599 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2600 EVA or 64-bit. The default is 16Mb.
2605 depends on NEED_MULTIPLE_NODES
2607 config HW_PERF_EVENTS
2608 bool "Enable hardware performance counter support for perf events"
2609 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2612 Enable hardware performance counter support for perf events. If
2613 disabled, perf events will use software events only.
2618 bool "Multi-Processing support"
2619 depends on SYS_SUPPORTS_SMP
2621 This enables support for systems with more than one CPU. If you have
2622 a system with only one CPU, say N. If you have a system with more
2623 than one CPU, say Y.
2625 If you say N here, the kernel will run on uni- and multiprocessor
2626 machines, but will use only one CPU of a multiprocessor machine. If
2627 you say Y here, the kernel will run on many, but not all,
2628 uniprocessor machines. On a uniprocessor machine, the kernel
2629 will run faster if you say N here.
2631 People using multiprocessor machines who say Y here should also say
2632 Y to "Enhanced Real Time Clock Support", below.
2634 See also the SMP-HOWTO available at
2635 <http://www.tldp.org/docs.html#howto>.
2637 If you don't know what to do here, say N.
2642 config SYS_SUPPORTS_MIPS_CMP
2645 config SYS_SUPPORTS_MIPS_CPS
2648 config SYS_SUPPORTS_SMP
2651 config NR_CPUS_DEFAULT_4
2654 config NR_CPUS_DEFAULT_8
2657 config NR_CPUS_DEFAULT_16
2660 config NR_CPUS_DEFAULT_32
2663 config NR_CPUS_DEFAULT_64
2667 int "Maximum number of CPUs (2-256)"
2670 default "4" if NR_CPUS_DEFAULT_4
2671 default "8" if NR_CPUS_DEFAULT_8
2672 default "16" if NR_CPUS_DEFAULT_16
2673 default "32" if NR_CPUS_DEFAULT_32
2674 default "64" if NR_CPUS_DEFAULT_64
2676 This allows you to specify the maximum number of CPUs which this
2677 kernel will support. The maximum supported value is 32 for 32-bit
2678 kernel and 64 for 64-bit kernels; the minimum value which makes
2679 sense is 1 for Qemu (useful only for kernel debugging purposes)
2680 and 2 for all others.
2682 This is purely to save memory - each supported CPU adds
2683 approximately eight kilobytes to the kernel image. For best
2684 performance should round up your number of processors to the next
2687 config MIPS_PERF_SHARED_TC_COUNTERS
2691 # Timer Interrupt Frequency Configuration
2695 prompt "Timer frequency"
2698 Allows the configuration of the timer frequency.
2701 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2704 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2707 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2710 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2713 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2716 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2719 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2722 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2726 config SYS_SUPPORTS_24HZ
2729 config SYS_SUPPORTS_48HZ
2732 config SYS_SUPPORTS_100HZ
2735 config SYS_SUPPORTS_128HZ
2738 config SYS_SUPPORTS_250HZ
2741 config SYS_SUPPORTS_256HZ
2744 config SYS_SUPPORTS_1000HZ
2747 config SYS_SUPPORTS_1024HZ
2750 config SYS_SUPPORTS_ARBIT_HZ
2752 default y if !SYS_SUPPORTS_24HZ && \
2753 !SYS_SUPPORTS_48HZ && \
2754 !SYS_SUPPORTS_100HZ && \
2755 !SYS_SUPPORTS_128HZ && \
2756 !SYS_SUPPORTS_250HZ && \
2757 !SYS_SUPPORTS_256HZ && \
2758 !SYS_SUPPORTS_1000HZ && \
2759 !SYS_SUPPORTS_1024HZ
2765 default 100 if HZ_100
2766 default 128 if HZ_128
2767 default 250 if HZ_250
2768 default 256 if HZ_256
2769 default 1000 if HZ_1000
2770 default 1024 if HZ_1024
2773 def_bool HIGH_RES_TIMERS
2775 source "kernel/Kconfig.preempt"
2778 bool "Kexec system call"
2781 kexec is a system call that implements the ability to shutdown your
2782 current kernel, and to start another kernel. It is like a reboot
2783 but it is independent of the system firmware. And like a reboot
2784 you can start any kernel with it, not just Linux.
2786 The name comes from the similarity to the exec system call.
2788 It is an ongoing process to be certain the hardware in a machine
2789 is properly shutdown, so do not be surprised if this code does not
2790 initially work for you. As of this writing the exact hardware
2791 interface is strongly in flux, so no good recommendation can be
2795 bool "Kernel crash dumps"
2797 Generate crash dump after being started by kexec.
2798 This should be normally only set in special crash dump kernels
2799 which are loaded in the main kernel with kexec-tools into
2800 a specially reserved region and then later executed after
2801 a crash by kdump/kexec. The crash dump kernel must be compiled
2802 to a memory address not used by the main kernel or firmware using
2805 config PHYSICAL_START
2806 hex "Physical address where the kernel is loaded"
2807 default "0xffffffff84000000" if 64BIT
2808 default "0x84000000" if 32BIT
2809 depends on CRASH_DUMP
2811 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2812 If you plan to use kernel for capturing the crash dump change
2813 this value to start of the reserved region (the "X" value as
2814 specified in the "crashkernel=YM@XM" command line boot parameter
2815 passed to the panic-ed kernel).
2818 bool "Enable seccomp to safely compute untrusted bytecode"
2822 This kernel feature is useful for number crunching applications
2823 that may need to compute untrusted bytecode during their
2824 execution. By using pipes or other transports made available to
2825 the process as file descriptors supporting the read/write
2826 syscalls, it's possible to isolate those applications in
2827 their own address space using seccomp. Once seccomp is
2828 enabled via /proc/<pid>/seccomp, it cannot be disabled
2829 and the task is only allowed to execute a few safe syscalls
2830 defined by each seccomp mode.
2832 If unsure, say Y. Only embedded should say N here.
2834 config MIPS_O32_FP64_SUPPORT
2835 bool "Support for O32 binaries using 64-bit FP"
2836 depends on 32BIT || MIPS32_O32
2838 When this is enabled, the kernel will support use of 64-bit floating
2839 point registers with binaries using the O32 ABI along with the
2840 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2841 32-bit MIPS systems this support is at the cost of increasing the
2842 size and complexity of the compiled FPU emulator. Thus if you are
2843 running a MIPS32 system and know that none of your userland binaries
2844 will require 64-bit floating point, you may wish to reduce the size
2845 of your kernel & potentially improve FP emulation performance by
2848 Although binutils currently supports use of this flag the details
2849 concerning its effect upon the O32 ABI in userland are still being
2850 worked on. In order to avoid userland becoming dependant upon current
2851 behaviour before the details have been finalised, this option should
2852 be considered experimental and only enabled by those working upon
2860 select OF_EARLY_FLATTREE
2867 prompt "Kernel appended dtb support" if USE_OF
2868 default MIPS_NO_APPENDED_DTB
2870 config MIPS_NO_APPENDED_DTB
2873 Do not enable appended dtb support.
2875 config MIPS_ELF_APPENDED_DTB
2878 With this option, the boot code will look for a device tree binary
2879 DTB) included in the vmlinux ELF section .appended_dtb. By default
2880 it is empty and the DTB can be appended using binutils command
2883 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2885 This is meant as a backward compatiblity convenience for those
2886 systems with a bootloader that can't be upgraded to accommodate
2887 the documented boot protocol using a device tree.
2889 config MIPS_RAW_APPENDED_DTB
2892 With this option, the boot code will look for a device tree binary
2893 DTB) appended to raw vmlinux.bin (without decompressor).
2894 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2896 This is meant as a backward compatibility convenience for those
2897 systems with a bootloader that can't be upgraded to accommodate
2898 the documented boot protocol using a device tree.
2900 Beware that there is very little in terms of protection against
2901 this option being confused by leftover garbage in memory that might
2902 look like a DTB header after a reboot if no actual DTB is appended
2903 to vmlinux.bin. Do not leave this option active in a production kernel
2904 if you don't intend to always append a DTB.
2906 config MIPS_ZBOOT_APPENDED_DTB
2908 depends on SYS_SUPPORTS_ZBOOT
2910 With this option, the boot code will look for a device tree binary
2911 DTB) appended to raw vmlinuz.bin (with decompressor).
2912 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2914 This is meant as a backward compatibility convenience for those
2915 systems with a bootloader that can't be upgraded to accommodate
2916 the documented boot protocol using a device tree.
2918 Beware that there is very little in terms of protection against
2919 this option being confused by leftover garbage in memory that might
2920 look like a DTB header after a reboot if no actual DTB is appended
2921 to vmlinuz.bin. Do not leave this option active in a production kernel
2922 if you don't intend to always append a DTB.
2926 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2927 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2928 !MIPS_MALTA && !MIPS_SEAD3 && \
2930 default MIPS_CMDLINE_FROM_BOOTLOADER
2932 config MIPS_CMDLINE_FROM_DTB
2934 bool "Dtb kernel arguments if available"
2936 config MIPS_CMDLINE_DTB_EXTEND
2938 bool "Extend dtb kernel arguments with bootloader arguments"
2940 config MIPS_CMDLINE_FROM_BOOTLOADER
2941 bool "Bootloader kernel arguments if available"
2943 config MIPS_CMDLINE_BUILTIN_EXTEND
2944 depends on CMDLINE_BOOL
2945 bool "Extend builtin kernel arguments with bootloader arguments"
2950 config LOCKDEP_SUPPORT
2954 config STACKTRACE_SUPPORT
2958 config HAVE_LATENCYTOP_SUPPORT
2962 config PGTABLE_LEVELS
2964 default 3 if 64BIT && !PAGE_SIZE_64KB
2967 source "init/Kconfig"
2969 source "kernel/Kconfig.freezer"
2971 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2979 bool "Support for PCI controller"
2980 depends on HW_HAS_PCI
2982 select NO_GENERIC_PCI_IOPORT_MAP
2984 Find out whether you have a PCI motherboard. PCI is the name of a
2985 bus system, i.e. the way the CPU talks to the other stuff inside
2986 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2990 bool "Support for HT-linked PCI"
2992 depends on CPU_LOONGSON3
2996 Loongson family machines use Hyper-Transport bus for inter-core
2997 connection and device connection. The PCI bus is a subordinate
2998 linked at HT. Choose Y for Loongson-3 based machines.
3003 source "drivers/pci/Kconfig"
3006 # ISA support is now enabled via select. Too many systems still have the one
3007 # or other ISA chip on the board that users don't know about so don't expect
3008 # users to choose the right thing ...
3015 depends on HW_HAS_EISA
3017 select GENERIC_ISA_DMA
3019 The Extended Industry Standard Architecture (EISA) bus was
3020 developed as an open alternative to the IBM MicroChannel bus.
3022 The EISA bus provided some of the features of the IBM MicroChannel
3023 bus while maintaining backward compatibility with cards made for
3024 the older ISA bus. The EISA bus saw limited use between 1988 and
3025 1995 when it was made obsolete by the PCI bus.
3027 Say Y here if you are building a kernel for an EISA-based machine.
3031 source "drivers/eisa/Kconfig"
3034 bool "TURBOchannel support"
3035 depends on MACH_DECSTATION
3037 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3038 processors. TURBOchannel programming specifications are available
3040 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3042 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3043 Linux driver support status is documented at:
3044 <http://www.linux-mips.org/wiki/DECstation>
3054 select MIPS_EXTERNAL_TIMER
3062 source "drivers/pcmcia/Kconfig"
3065 tristate "RapidIO support"
3069 If you say Y here, the kernel will include drivers and
3070 infrastructure code to support RapidIO interconnect devices.
3072 source "drivers/rapidio/Kconfig"
3076 menu "Executable file formats"
3078 source "fs/Kconfig.binfmt"
3083 config MIPS32_COMPAT
3089 config SYSVIPC_COMPAT
3093 bool "Kernel support for o32 binaries"
3095 select ARCH_WANT_OLD_COMPAT_IPC
3097 select MIPS32_COMPAT
3098 select SYSVIPC_COMPAT if SYSVIPC
3100 Select this option if you want to run o32 binaries. These are pure
3101 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3102 existing binaries are in this format.
3107 bool "Kernel support for n32 binaries"
3110 select MIPS32_COMPAT
3111 select SYSVIPC_COMPAT if SYSVIPC
3113 Select this option if you want to run n32 binaries. These are
3114 64-bit binaries using 32-bit quantities for addressing and certain
3115 data that would normally be 64-bit. They are used in special
3122 default y if MIPS32_O32 || MIPS32_N32
3127 menu "Power management options"
3129 config ARCH_HIBERNATION_POSSIBLE
3131 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3133 config ARCH_SUSPEND_POSSIBLE
3135 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3137 source "kernel/power/Kconfig"
3141 config MIPS_EXTERNAL_TIMER
3144 menu "CPU Power Management"
3146 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3147 source "drivers/cpufreq/Kconfig"
3150 source "drivers/cpuidle/Kconfig"
3154 source "net/Kconfig"
3156 source "drivers/Kconfig"
3158 source "drivers/firmware/Kconfig"
3162 source "arch/mips/Kconfig.debug"
3164 source "security/Kconfig"
3166 source "crypto/Kconfig"
3168 source "lib/Kconfig"
3170 source "arch/mips/kvm/Kconfig"