4 select ARCH_SUPPORTS_UPROBES
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
8 select ARCH_USE_BUILTIN_BSWAP
9 select HAVE_CONTEXT_TRACKING
10 select HAVE_GENERIC_DMA_COHERENT
13 select HAVE_PERF_EVENTS
14 select PERF_USE_VMALLOC
16 select HAVE_ARCH_SECCOMP_FILTER
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_BPF_JIT if !CPU_MICROMIPS
19 select HAVE_FUNCTION_TRACER
20 select HAVE_DYNAMIC_FTRACE
21 select HAVE_FTRACE_MCOUNT_RECORD
22 select HAVE_C_RECORDMCOUNT
23 select HAVE_FUNCTION_GRAPH_TRACER
25 select HAVE_KRETPROBES
26 select HAVE_SYSCALL_TRACEPOINTS
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_SYSCALL_TRACEPOINTS
29 select ARCH_HAS_ELF_RANDOMIZE
30 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
31 select RTC_LIB if !MACH_LOONGSON64
32 select GENERIC_ATOMIC64 if !64BIT
33 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
35 select HAVE_DMA_CONTIGUOUS
36 select HAVE_DMA_API_DEBUG
37 select GENERIC_IRQ_PROBE
38 select GENERIC_IRQ_SHOW
39 select GENERIC_PCI_IOMAP
40 select HAVE_ARCH_JUMP_LABEL
41 select ARCH_WANT_IPC_PARSE_VERSION
42 select IRQ_FORCED_THREADING
44 select HAVE_MEMBLOCK_NODE_MAP
45 select ARCH_DISCARD_MEMBLOCK
46 select GENERIC_SMP_IDLE_THREAD
47 select BUILDTIME_EXTABLE_SORT
48 select GENERIC_CLOCKEVENTS
49 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
50 select GENERIC_CMOS_UPDATE
51 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
65 menu "Machine selection"
72 bool "Alchemy processor based machines"
73 select ARCH_PHYS_ADDR_T_64BIT
77 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
78 select SYS_HAS_CPU_MIPS32_R1
79 select SYS_SUPPORTS_32BIT_KERNEL
80 select SYS_SUPPORTS_APM_EMULATION
81 select ARCH_REQUIRE_GPIOLIB
82 select SYS_SUPPORTS_ZBOOT
86 bool "Texas Instruments AR7"
88 select DMA_NONCOHERENT
94 select SYS_HAS_CPU_MIPS32_R1
95 select SYS_HAS_EARLY_PRINTK
96 select SYS_SUPPORTS_32BIT_KERNEL
97 select SYS_SUPPORTS_LITTLE_ENDIAN
98 select SYS_SUPPORTS_MIPS16
99 select SYS_SUPPORTS_ZBOOT_UART16550
100 select ARCH_REQUIRE_GPIOLIB
104 Support for the Texas Instruments AR7 System-on-a-Chip
105 family: TNETD7100, 7200 and 7300.
108 bool "Atheros AR231x/AR531x SoC support"
111 select DMA_NONCOHERENT
114 select SYS_HAS_CPU_MIPS32_R1
115 select SYS_SUPPORTS_BIG_ENDIAN
116 select SYS_SUPPORTS_32BIT_KERNEL
117 select SYS_HAS_EARLY_PRINTK
119 Support for Atheros AR231x and Atheros AR531x based boards
122 bool "Atheros AR71XX/AR724X/AR913X based boards"
123 select ARCH_HAS_RESET_CONTROLLER
124 select ARCH_REQUIRE_GPIOLIB
128 select DMA_NONCOHERENT
134 select SYS_HAS_CPU_MIPS32_R2
135 select SYS_HAS_EARLY_PRINTK
136 select SYS_SUPPORTS_32BIT_KERNEL
137 select SYS_SUPPORTS_BIG_ENDIAN
138 select SYS_SUPPORTS_MIPS16
139 select SYS_SUPPORTS_ZBOOT
142 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
145 bool "Broadcom Generic BMIPS kernel"
147 select NO_EXCEPT_FILL
153 select BCM7038_L1_IRQ
154 select BCM7120_L2_IRQ
155 select BRCMSTB_L2_IRQ
157 select DMA_NONCOHERENT
158 select SYS_SUPPORTS_32BIT_KERNEL
159 select SYS_SUPPORTS_LITTLE_ENDIAN
160 select SYS_SUPPORTS_BIG_ENDIAN
161 select SYS_SUPPORTS_HIGHMEM
162 select SYS_HAS_CPU_BMIPS32_3300
163 select SYS_HAS_CPU_BMIPS4350
164 select SYS_HAS_CPU_BMIPS4380
165 select SYS_HAS_CPU_BMIPS5000
167 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
168 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
169 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
170 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
172 Build a generic DT-based kernel image that boots on select
173 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
174 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
175 must be set appropriately for your board.
178 bool "Broadcom BCM47XX based boards"
179 select ARCH_WANT_OPTIONAL_GPIOLIB
183 select DMA_NONCOHERENT
186 select SYS_HAS_CPU_MIPS32_R1
187 select NO_EXCEPT_FILL
188 select SYS_SUPPORTS_32BIT_KERNEL
189 select SYS_SUPPORTS_LITTLE_ENDIAN
190 select SYS_SUPPORTS_MIPS16
191 select SYS_HAS_EARLY_PRINTK
192 select USE_GENERIC_EARLY_PRINTK_8250
194 select LEDS_GPIO_REGISTER
197 Support for BCM47XX based boards
200 bool "Broadcom BCM63XX based boards"
205 select DMA_NONCOHERENT
207 select SYS_SUPPORTS_32BIT_KERNEL
208 select SYS_SUPPORTS_BIG_ENDIAN
209 select SYS_HAS_EARLY_PRINTK
211 select ARCH_REQUIRE_GPIOLIB
213 select MIPS_L1_CACHE_SHIFT_4
215 Support for BCM63XX based boards
222 select DMA_NONCOHERENT
228 select PCI_GT64XXX_PCI0
230 select SYS_HAS_CPU_NEVADA
231 select SYS_HAS_EARLY_PRINTK
232 select SYS_SUPPORTS_32BIT_KERNEL
233 select SYS_SUPPORTS_64BIT_KERNEL
234 select SYS_SUPPORTS_LITTLE_ENDIAN
235 select USE_GENERIC_EARLY_PRINTK_8250
237 config MACH_DECSTATION
241 select CEVT_R4K if CPU_R4X00
243 select CSRC_R4K if CPU_R4X00
244 select CPU_DADDI_WORKAROUNDS if 64BIT
245 select CPU_R4000_WORKAROUNDS if 64BIT
246 select CPU_R4400_WORKAROUNDS if 64BIT
247 select DMA_NONCOHERENT
250 select SYS_HAS_CPU_R3000
251 select SYS_HAS_CPU_R4X00
252 select SYS_SUPPORTS_32BIT_KERNEL
253 select SYS_SUPPORTS_64BIT_KERNEL
254 select SYS_SUPPORTS_LITTLE_ENDIAN
255 select SYS_SUPPORTS_128HZ
256 select SYS_SUPPORTS_256HZ
257 select SYS_SUPPORTS_1024HZ
258 select MIPS_L1_CACHE_SHIFT_4
260 This enables support for DEC's MIPS based workstations. For details
261 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
262 DECstation porting pages on <http://decstation.unix-ag.org/>.
264 If you have one of the following DECstation Models you definitely
265 want to choose R4xx0 for the CPU Type:
272 otherwise choose R3000.
275 bool "Jazz family of machines"
278 select ARCH_MAY_HAVE_PC_FDC
281 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
282 select GENERIC_ISA_DMA
283 select HAVE_PCSPKR_PLATFORM
288 select SYS_HAS_CPU_R4X00
289 select SYS_SUPPORTS_32BIT_KERNEL
290 select SYS_SUPPORTS_64BIT_KERNEL
291 select SYS_SUPPORTS_100HZ
293 This a family of machines based on the MIPS R4030 chipset which was
294 used by several vendors to build RISC/os and Windows NT workstations.
295 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
296 Olivetti M700-10 workstations.
299 bool "Ingenic SoC based machines"
300 select SYS_SUPPORTS_32BIT_KERNEL
301 select SYS_SUPPORTS_LITTLE_ENDIAN
302 select SYS_SUPPORTS_ZBOOT_UART16550
303 select DMA_NONCOHERENT
305 select ARCH_REQUIRE_GPIOLIB
307 select GENERIC_IRQ_CHIP
313 bool "Lantiq based platforms"
314 select DMA_NONCOHERENT
318 select SYS_HAS_CPU_MIPS32_R1
319 select SYS_HAS_CPU_MIPS32_R2
320 select SYS_SUPPORTS_BIG_ENDIAN
321 select SYS_SUPPORTS_32BIT_KERNEL
322 select SYS_SUPPORTS_MIPS16
323 select SYS_SUPPORTS_MULTITHREADING
324 select SYS_HAS_EARLY_PRINTK
325 select ARCH_REQUIRE_GPIOLIB
328 select HAVE_MACH_CLKDEV
332 select PINCTRL_LANTIQ
333 select ARCH_HAS_RESET_CONTROLLER
334 select RESET_CONTROLLER
337 bool "LASAT Networks platforms"
341 select DMA_NONCOHERENT
342 select SYS_HAS_EARLY_PRINTK
345 select PCI_GT64XXX_PCI0
347 select R5000_CPU_SCACHE
348 select SYS_HAS_CPU_R5000
349 select SYS_SUPPORTS_32BIT_KERNEL
350 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
351 select SYS_SUPPORTS_LITTLE_ENDIAN
353 config MACH_LOONGSON32
354 bool "Loongson-1 family of machines"
355 select SYS_SUPPORTS_ZBOOT
357 This enables support for the Loongson-1 family of machines.
359 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
360 the Institute of Computing Technology (ICT), Chinese Academy of
363 config MACH_LOONGSON64
364 bool "Loongson-2/3 family of machines"
365 select SYS_SUPPORTS_ZBOOT
367 This enables the support of Loongson-2/3 family of machines.
369 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
370 family of multi-core CPUs. They are both 64-bit general-purpose
371 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
372 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
373 in the People's Republic of China. The chief architect is Professor
376 config MACH_PISTACHIO
377 bool "IMG Pistachio SoC based boards"
378 select ARCH_REQUIRE_GPIOLIB
382 select CLKSRC_MIPS_GIC
385 select DMA_MAYBE_COHERENT
389 select MIPS_CPU_SCACHE
393 select SYS_HAS_CPU_MIPS32_R2
394 select SYS_SUPPORTS_32BIT_KERNEL
395 select SYS_SUPPORTS_LITTLE_ENDIAN
396 select SYS_SUPPORTS_MIPS_CPS
397 select SYS_SUPPORTS_MULTITHREADING
398 select SYS_SUPPORTS_ZBOOT
399 select SYS_HAS_EARLY_PRINTK
400 select USE_GENERIC_EARLY_PRINTK_8250
403 This enables support for the IMG Pistachio SoC platform.
406 bool "MIPS Malta board"
407 select ARCH_MAY_HAVE_PC_FDC
413 select CLKSRC_MIPS_GIC
415 select DMA_MAYBE_COHERENT
416 select GENERIC_ISA_DMA
417 select HAVE_PCSPKR_PLATFORM
424 select MIPS_CPU_SCACHE
425 select MIPS_L1_CACHE_SHIFT_6
426 select PCI_GT64XXX_PCI0
430 select SYS_HAS_CPU_MIPS32_R1
431 select SYS_HAS_CPU_MIPS32_R2
432 select SYS_HAS_CPU_MIPS32_R3_5
433 select SYS_HAS_CPU_MIPS32_R5
434 select SYS_HAS_CPU_MIPS32_R6
435 select SYS_HAS_CPU_MIPS64_R1
436 select SYS_HAS_CPU_MIPS64_R2
437 select SYS_HAS_CPU_MIPS64_R6
438 select SYS_HAS_CPU_NEVADA
439 select SYS_HAS_CPU_RM7000
440 select SYS_SUPPORTS_32BIT_KERNEL
441 select SYS_SUPPORTS_64BIT_KERNEL
442 select SYS_SUPPORTS_BIG_ENDIAN
443 select SYS_SUPPORTS_HIGHMEM
444 select SYS_SUPPORTS_LITTLE_ENDIAN
445 select SYS_SUPPORTS_MICROMIPS
446 select SYS_SUPPORTS_MIPS_CMP
447 select SYS_SUPPORTS_MIPS_CPS
448 select SYS_SUPPORTS_MIPS16
449 select SYS_SUPPORTS_MULTITHREADING
450 select SYS_SUPPORTS_SMARTMIPS
451 select SYS_SUPPORTS_ZBOOT
453 select ZONE_DMA32 if 64BIT
457 This enables support for the MIPS Technologies Malta evaluation
461 bool "MIPS SEAD3 board"
467 select CLKSRC_MIPS_GIC
469 select CPU_MIPSR2_IRQ_VI
470 select CPU_MIPSR2_IRQ_EI
471 select DMA_NONCOHERENT
476 select SYS_HAS_CPU_MIPS32_R1
477 select SYS_HAS_CPU_MIPS32_R2
478 select SYS_HAS_CPU_MIPS64_R1
479 select SYS_HAS_EARLY_PRINTK
480 select SYS_SUPPORTS_32BIT_KERNEL
481 select SYS_SUPPORTS_64BIT_KERNEL
482 select SYS_SUPPORTS_BIG_ENDIAN
483 select SYS_SUPPORTS_LITTLE_ENDIAN
484 select SYS_SUPPORTS_SMARTMIPS
485 select SYS_SUPPORTS_MICROMIPS
486 select SYS_SUPPORTS_MIPS16
487 select USB_EHCI_BIG_ENDIAN_DESC
488 select USB_EHCI_BIG_ENDIAN_MMIO
491 This enables support for the MIPS Technologies SEAD3 evaluation
495 bool "NEC EMMA2RH Mark-eins board"
499 This enables support for the NEC Electronics Mark-eins boards.
502 bool "NEC VR4100 series based machines"
505 select SYS_HAS_CPU_VR41XX
506 select SYS_SUPPORTS_MIPS16
507 select ARCH_REQUIRE_GPIOLIB
510 bool "NXP STB220 board"
513 Support for NXP Semiconductors STB220 Development Board.
520 Support for NXP Semiconductors STB225 Development Board.
523 bool "PMC-Sierra MSP chipsets"
526 select DMA_NONCOHERENT
528 select NO_EXCEPT_FILL
530 select SYS_HAS_CPU_MIPS32_R1
531 select SYS_HAS_CPU_MIPS32_R2
532 select SYS_SUPPORTS_32BIT_KERNEL
533 select SYS_SUPPORTS_BIG_ENDIAN
534 select SYS_SUPPORTS_MIPS16
537 select SERIAL_8250_CONSOLE
538 select USB_EHCI_BIG_ENDIAN_MMIO
539 select USB_EHCI_BIG_ENDIAN_DESC
541 This adds support for the PMC-Sierra family of Multi-Service
542 Processor System-On-A-Chips. These parts include a number
543 of integrated peripherals, interfaces and DSPs in addition to
544 a variety of MIPS cores.
547 bool "Ralink based machines"
551 select DMA_NONCOHERENT
554 select SYS_HAS_CPU_MIPS32_R1
555 select SYS_HAS_CPU_MIPS32_R2
556 select SYS_SUPPORTS_32BIT_KERNEL
557 select SYS_SUPPORTS_LITTLE_ENDIAN
558 select SYS_SUPPORTS_MIPS16
559 select SYS_HAS_EARLY_PRINTK
560 select HAVE_MACH_CLKDEV
562 select ARCH_HAS_RESET_CONTROLLER
563 select RESET_CONTROLLER
566 bool "SGI IP22 (Indy/Indigo2)"
572 select DEFAULT_SGI_PARTITION
573 select DMA_NONCOHERENT
577 select IP22_CPU_SCACHE
579 select GENERIC_ISA_DMA_SUPPORT_BROKEN
581 select SGI_HAS_INDYDOG
587 select SYS_HAS_CPU_R4X00
588 select SYS_HAS_CPU_R5000
590 # Disable EARLY_PRINTK for now since it leads to overwritten prom
591 # memory during early boot on some machines.
593 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
594 # for a more details discussion
596 # select SYS_HAS_EARLY_PRINTK
597 select SYS_SUPPORTS_32BIT_KERNEL
598 select SYS_SUPPORTS_64BIT_KERNEL
599 select SYS_SUPPORTS_BIG_ENDIAN
600 select MIPS_L1_CACHE_SHIFT_7
602 This are the SGI Indy, Challenge S and Indigo2, as well as certain
603 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
604 that runs on these, say Y here.
607 bool "SGI IP27 (Origin200/2000)"
611 select DEFAULT_SGI_PARTITION
613 select SYS_HAS_EARLY_PRINTK
615 select NR_CPUS_DEFAULT_64
616 select SYS_HAS_CPU_R10000
617 select SYS_SUPPORTS_64BIT_KERNEL
618 select SYS_SUPPORTS_BIG_ENDIAN
619 select SYS_SUPPORTS_NUMA
620 select SYS_SUPPORTS_SMP
621 select MIPS_L1_CACHE_SHIFT_7
623 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
624 workstations. To compile a Linux kernel that runs on these, say Y
628 bool "SGI IP28 (Indigo2 R10k)"
634 select DEFAULT_SGI_PARTITION
635 select DMA_NONCOHERENT
636 select GENERIC_ISA_DMA_SUPPORT_BROKEN
642 select SGI_HAS_INDYDOG
648 select SYS_HAS_CPU_R10000
650 # Disable EARLY_PRINTK for now since it leads to overwritten prom
651 # memory during early boot on some machines.
653 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
654 # for a more details discussion
656 # select SYS_HAS_EARLY_PRINTK
657 select SYS_SUPPORTS_64BIT_KERNEL
658 select SYS_SUPPORTS_BIG_ENDIAN
659 select MIPS_L1_CACHE_SHIFT_7
661 This is the SGI Indigo2 with R10000 processor. To compile a Linux
662 kernel that runs on these, say Y here.
671 select DMA_NONCOHERENT
674 select R5000_CPU_SCACHE
675 select RM7000_CPU_SCACHE
676 select SYS_HAS_CPU_R5000
677 select SYS_HAS_CPU_R10000 if BROKEN
678 select SYS_HAS_CPU_RM7000
679 select SYS_HAS_CPU_NEVADA
680 select SYS_SUPPORTS_64BIT_KERNEL
681 select SYS_SUPPORTS_BIG_ENDIAN
683 If you want this kernel to run on SGI O2 workstation, say Y here.
686 bool "Sibyte BCM91120C-CRhine"
689 select SIBYTE_BCM1120
691 select SYS_HAS_CPU_SB1
692 select SYS_SUPPORTS_BIG_ENDIAN
693 select SYS_SUPPORTS_LITTLE_ENDIAN
696 bool "Sibyte BCM91120x-Carmel"
699 select SIBYTE_BCM1120
701 select SYS_HAS_CPU_SB1
702 select SYS_SUPPORTS_BIG_ENDIAN
703 select SYS_SUPPORTS_LITTLE_ENDIAN
706 bool "Sibyte BCM91125C-CRhone"
709 select SIBYTE_BCM1125
711 select SYS_HAS_CPU_SB1
712 select SYS_SUPPORTS_BIG_ENDIAN
713 select SYS_SUPPORTS_HIGHMEM
714 select SYS_SUPPORTS_LITTLE_ENDIAN
717 bool "Sibyte BCM91125E-Rhone"
720 select SIBYTE_BCM1125H
722 select SYS_HAS_CPU_SB1
723 select SYS_SUPPORTS_BIG_ENDIAN
724 select SYS_SUPPORTS_LITTLE_ENDIAN
727 bool "Sibyte BCM91250A-SWARM"
730 select HAVE_PATA_PLATFORM
733 select SYS_HAS_CPU_SB1
734 select SYS_SUPPORTS_BIG_ENDIAN
735 select SYS_SUPPORTS_HIGHMEM
736 select SYS_SUPPORTS_LITTLE_ENDIAN
737 select ZONE_DMA32 if 64BIT
739 config SIBYTE_LITTLESUR
740 bool "Sibyte BCM91250C2-LittleSur"
743 select HAVE_PATA_PLATFORM
746 select SYS_HAS_CPU_SB1
747 select SYS_SUPPORTS_BIG_ENDIAN
748 select SYS_SUPPORTS_HIGHMEM
749 select SYS_SUPPORTS_LITTLE_ENDIAN
751 config SIBYTE_SENTOSA
752 bool "Sibyte BCM91250E-Sentosa"
757 select SYS_HAS_CPU_SB1
758 select SYS_SUPPORTS_BIG_ENDIAN
759 select SYS_SUPPORTS_LITTLE_ENDIAN
762 bool "Sibyte BCM91480B-BigSur"
765 select NR_CPUS_DEFAULT_4
766 select SIBYTE_BCM1x80
768 select SYS_HAS_CPU_SB1
769 select SYS_SUPPORTS_BIG_ENDIAN
770 select SYS_SUPPORTS_HIGHMEM
771 select SYS_SUPPORTS_LITTLE_ENDIAN
772 select ZONE_DMA32 if 64BIT
775 bool "SNI RM200/300/400"
776 select FW_ARC if CPU_LITTLE_ENDIAN
777 select FW_ARC32 if CPU_LITTLE_ENDIAN
778 select FW_SNIPROM if CPU_BIG_ENDIAN
779 select ARCH_MAY_HAVE_PC_FDC
783 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
784 select DMA_NONCOHERENT
785 select GENERIC_ISA_DMA
786 select HAVE_PCSPKR_PLATFORM
793 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
794 select SYS_HAS_CPU_R4X00
795 select SYS_HAS_CPU_R5000
796 select SYS_HAS_CPU_R10000
797 select R5000_CPU_SCACHE
798 select SYS_HAS_EARLY_PRINTK
799 select SYS_SUPPORTS_32BIT_KERNEL
800 select SYS_SUPPORTS_64BIT_KERNEL
801 select SYS_SUPPORTS_BIG_ENDIAN
802 select SYS_SUPPORTS_HIGHMEM
803 select SYS_SUPPORTS_LITTLE_ENDIAN
805 The SNI RM200/300/400 are MIPS-based machines manufactured by
806 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
807 Technology and now in turn merged with Fujitsu. Say Y here to
808 support this machine type.
811 bool "Toshiba TX39 series based machines"
814 bool "Toshiba TX49 series based machines"
816 config MIKROTIK_RB532
817 bool "Mikrotik RB532 boards"
820 select DMA_NONCOHERENT
823 select SYS_HAS_CPU_MIPS32_R1
824 select SYS_SUPPORTS_32BIT_KERNEL
825 select SYS_SUPPORTS_LITTLE_ENDIAN
828 select ARCH_REQUIRE_GPIOLIB
829 select MIPS_L1_CACHE_SHIFT_4
831 Support the Mikrotik(tm) RouterBoard 532 series,
832 based on the IDT RC32434 SoC.
834 config CAVIUM_OCTEON_SOC
835 bool "Cavium Networks Octeon SoC based boards"
837 select ARCH_PHYS_ADDR_T_64BIT
839 select SYS_SUPPORTS_64BIT_KERNEL
840 select SYS_SUPPORTS_BIG_ENDIAN
842 select EDAC_ATOMIC_SCRUB
843 select SYS_SUPPORTS_LITTLE_ENDIAN
844 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
845 select SYS_HAS_EARLY_PRINTK
846 select SYS_HAS_CPU_CAVIUM_OCTEON
851 select ARCH_REQUIRE_GPIOLIB
854 select ARCH_SPARSEMEM_ENABLE
855 select SYS_SUPPORTS_SMP
856 select NR_CPUS_DEFAULT_16
858 select MTD_COMPLEX_MAPPINGS
860 This option supports all of the Octeon reference boards from Cavium
861 Networks. It builds a kernel that dynamically determines the Octeon
862 CPU type and supports all known board reference implementations.
863 Some of the supported boards are:
870 Say Y here for most Octeon reference boards.
873 bool "Netlogic XLR/XLS based systems"
876 select SYS_HAS_CPU_XLR
877 select SYS_SUPPORTS_SMP
880 select SYS_SUPPORTS_32BIT_KERNEL
881 select SYS_SUPPORTS_64BIT_KERNEL
882 select ARCH_PHYS_ADDR_T_64BIT
883 select SYS_SUPPORTS_BIG_ENDIAN
884 select SYS_SUPPORTS_HIGHMEM
886 select NR_CPUS_DEFAULT_32
890 select ZONE_DMA32 if 64BIT
892 select SYS_HAS_EARLY_PRINTK
893 select SYS_SUPPORTS_ZBOOT
894 select SYS_SUPPORTS_ZBOOT_UART16550
896 Support for systems based on Netlogic XLR and XLS processors.
897 Say Y here if you have a XLR or XLS based board.
900 bool "Netlogic XLP based systems"
903 select SYS_HAS_CPU_XLP
904 select SYS_SUPPORTS_SMP
906 select SYS_SUPPORTS_32BIT_KERNEL
907 select SYS_SUPPORTS_64BIT_KERNEL
908 select ARCH_PHYS_ADDR_T_64BIT
909 select ARCH_REQUIRE_GPIOLIB
910 select SYS_SUPPORTS_BIG_ENDIAN
911 select SYS_SUPPORTS_LITTLE_ENDIAN
912 select SYS_SUPPORTS_HIGHMEM
914 select NR_CPUS_DEFAULT_32
918 select ZONE_DMA32 if 64BIT
920 select SYS_HAS_EARLY_PRINTK
922 select SYS_SUPPORTS_ZBOOT
923 select SYS_SUPPORTS_ZBOOT_UART16550
925 This board is based on Netlogic XLP Processor.
926 Say Y here if you have a XLP based board.
929 bool "Para-Virtualized guest system"
933 select SYS_SUPPORTS_64BIT_KERNEL
934 select SYS_SUPPORTS_32BIT_KERNEL
935 select SYS_SUPPORTS_BIG_ENDIAN
936 select SYS_SUPPORTS_SMP
937 select NR_CPUS_DEFAULT_4
938 select SYS_HAS_EARLY_PRINTK
939 select SYS_HAS_CPU_MIPS32_R2
940 select SYS_HAS_CPU_MIPS64_R2
941 select SYS_HAS_CPU_CAVIUM_OCTEON
945 This option supports guest running under ????
949 source "arch/mips/alchemy/Kconfig"
950 source "arch/mips/ath25/Kconfig"
951 source "arch/mips/ath79/Kconfig"
952 source "arch/mips/bcm47xx/Kconfig"
953 source "arch/mips/bcm63xx/Kconfig"
954 source "arch/mips/bmips/Kconfig"
955 source "arch/mips/jazz/Kconfig"
956 source "arch/mips/jz4740/Kconfig"
957 source "arch/mips/lantiq/Kconfig"
958 source "arch/mips/lasat/Kconfig"
959 source "arch/mips/pistachio/Kconfig"
960 source "arch/mips/pmcs-msp71xx/Kconfig"
961 source "arch/mips/ralink/Kconfig"
962 source "arch/mips/sgi-ip27/Kconfig"
963 source "arch/mips/sibyte/Kconfig"
964 source "arch/mips/txx9/Kconfig"
965 source "arch/mips/vr41xx/Kconfig"
966 source "arch/mips/cavium-octeon/Kconfig"
967 source "arch/mips/loongson32/Kconfig"
968 source "arch/mips/loongson64/Kconfig"
969 source "arch/mips/netlogic/Kconfig"
970 source "arch/mips/paravirt/Kconfig"
974 config RWSEM_GENERIC_SPINLOCK
978 config RWSEM_XCHGADD_ALGORITHM
981 config ARCH_HAS_ILOG2_U32
985 config ARCH_HAS_ILOG2_U64
989 config GENERIC_HWEIGHT
993 config GENERIC_CALIBRATE_DELAY
997 config SCHED_OMIT_FRAME_POINTER
1002 # Select some configuration options automatically based on user selections.
1007 config ARCH_MAY_HAVE_PC_FDC
1044 select ARCH_REQUIRE_GPIOLIB
1050 config ARCH_DMA_ADDR_T_64BIT
1051 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1053 config ARCH_SUPPORTS_UPROBES
1056 config DMA_MAYBE_COHERENT
1057 select DMA_NONCOHERENT
1063 config DMA_NONCOHERENT
1065 select NEED_DMA_MAP_STATE
1067 config NEED_DMA_MAP_STATE
1070 config SYS_HAS_EARLY_PRINTK
1074 bool "Support for hot-pluggable CPUs"
1075 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1077 Say Y here to allow turning CPUs off and on. CPUs can be
1078 controlled through /sys/devices/system/cpu.
1079 (Note: power management support will enable this option
1080 automatically on SMP systems. )
1081 Say N if you want to disable CPU hotplug.
1083 config SYS_SUPPORTS_HOTPLUG_CPU
1086 config MIPS_BONITO64
1101 config NO_IOPORT_MAP
1107 config GENERIC_ISA_DMA
1109 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1112 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1114 select GENERIC_ISA_DMA
1119 config HOLES_IN_ZONE
1123 # Endianness selection. Sufficiently obscure so many users don't know what to
1124 # answer,so we try hard to limit the available choices. Also the use of a
1125 # choice statement should be more obvious to the user.
1128 prompt "Endianness selection"
1130 Some MIPS machines can be configured for either little or big endian
1131 byte order. These modes require different kernels and a different
1132 Linux distribution. In general there is one preferred byteorder for a
1133 particular system but some systems are just as commonly used in the
1134 one or the other endianness.
1136 config CPU_BIG_ENDIAN
1138 depends on SYS_SUPPORTS_BIG_ENDIAN
1140 config CPU_LITTLE_ENDIAN
1141 bool "Little endian"
1142 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1149 config SYS_SUPPORTS_APM_EMULATION
1152 config SYS_SUPPORTS_BIG_ENDIAN
1155 config SYS_SUPPORTS_LITTLE_ENDIAN
1158 config SYS_SUPPORTS_HUGETLBFS
1160 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1163 config MIPS_HUGE_TLB_SUPPORT
1164 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1181 config PCI_GT64XXX_PCI0
1184 config NO_EXCEPT_FILL
1191 select DMA_NONCOHERENT
1193 select SWAP_IO_SPACE
1194 select SYS_HAS_CPU_R5500
1195 select SYS_SUPPORTS_32BIT_KERNEL
1196 select SYS_SUPPORTS_64BIT_KERNEL
1197 select SYS_SUPPORTS_BIG_ENDIAN
1204 select DMA_NONCOHERENT
1205 select SYS_HAS_CPU_MIPS32_R2
1206 select SYS_SUPPORTS_32BIT_KERNEL
1207 select SYS_SUPPORTS_LITTLE_ENDIAN
1208 select SYS_SUPPORTS_BIG_ENDIAN
1209 select SYS_SUPPORTS_MIPS16
1210 select CPU_MIPSR2_IRQ_VI
1219 config SWAP_IO_SPACE
1222 config SGI_HAS_INDYDOG
1234 config SGI_HAS_ZILOG
1237 config SGI_HAS_I8042
1240 config DEFAULT_SGI_PARTITION
1252 config MIPS_L1_CACHE_SHIFT_4
1255 config MIPS_L1_CACHE_SHIFT_5
1258 config MIPS_L1_CACHE_SHIFT_6
1261 config MIPS_L1_CACHE_SHIFT_7
1264 config MIPS_L1_CACHE_SHIFT
1266 default "7" if MIPS_L1_CACHE_SHIFT_7
1267 default "6" if MIPS_L1_CACHE_SHIFT_6
1268 default "5" if MIPS_L1_CACHE_SHIFT_5
1269 default "4" if MIPS_L1_CACHE_SHIFT_4
1272 config HAVE_STD_PC_SERIAL_PORT
1276 bool "ARC console support"
1277 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1281 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1286 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1295 menu "CPU selection"
1301 config CPU_LOONGSON3
1302 bool "Loongson 3 CPU"
1303 depends on SYS_HAS_CPU_LOONGSON3
1304 select CPU_SUPPORTS_64BIT_KERNEL
1305 select CPU_SUPPORTS_HIGHMEM
1306 select CPU_SUPPORTS_HUGEPAGES
1307 select WEAK_ORDERING
1308 select WEAK_REORDERING_BEYOND_LLSC
1309 select ARCH_REQUIRE_GPIOLIB
1311 The Loongson 3 processor implements the MIPS64R2 instruction
1312 set with many extensions.
1314 config CPU_LOONGSON2E
1316 depends on SYS_HAS_CPU_LOONGSON2E
1317 select CPU_LOONGSON2
1319 The Loongson 2E processor implements the MIPS III instruction set
1320 with many extensions.
1322 It has an internal FPGA northbridge, which is compatible to
1325 config CPU_LOONGSON2F
1327 depends on SYS_HAS_CPU_LOONGSON2F
1328 select CPU_LOONGSON2
1329 select ARCH_REQUIRE_GPIOLIB
1331 The Loongson 2F processor implements the MIPS III instruction set
1332 with many extensions.
1334 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1335 have a similar programming interface with FPGA northbridge used in
1338 config CPU_LOONGSON1B
1340 depends on SYS_HAS_CPU_LOONGSON1B
1341 select CPU_LOONGSON1
1343 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1344 release 2 instruction set.
1346 config CPU_MIPS32_R1
1347 bool "MIPS32 Release 1"
1348 depends on SYS_HAS_CPU_MIPS32_R1
1349 select CPU_HAS_PREFETCH
1350 select CPU_SUPPORTS_32BIT_KERNEL
1351 select CPU_SUPPORTS_HIGHMEM
1353 Choose this option to build a kernel for release 1 or later of the
1354 MIPS32 architecture. Most modern embedded systems with a 32-bit
1355 MIPS processor are based on a MIPS32 processor. If you know the
1356 specific type of processor in your system, choose those that one
1357 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1358 Release 2 of the MIPS32 architecture is available since several
1359 years so chances are you even have a MIPS32 Release 2 processor
1360 in which case you should choose CPU_MIPS32_R2 instead for better
1363 config CPU_MIPS32_R2
1364 bool "MIPS32 Release 2"
1365 depends on SYS_HAS_CPU_MIPS32_R2
1366 select CPU_HAS_PREFETCH
1367 select CPU_SUPPORTS_32BIT_KERNEL
1368 select CPU_SUPPORTS_HIGHMEM
1369 select CPU_SUPPORTS_MSA
1372 Choose this option to build a kernel for release 2 or later of the
1373 MIPS32 architecture. Most modern embedded systems with a 32-bit
1374 MIPS processor are based on a MIPS32 processor. If you know the
1375 specific type of processor in your system, choose those that one
1376 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1378 config CPU_MIPS32_R6
1379 bool "MIPS32 Release 6"
1380 depends on SYS_HAS_CPU_MIPS32_R6
1381 select CPU_HAS_PREFETCH
1382 select CPU_SUPPORTS_32BIT_KERNEL
1383 select CPU_SUPPORTS_HIGHMEM
1384 select CPU_SUPPORTS_MSA
1387 select MIPS_O32_FP64_SUPPORT
1389 Choose this option to build a kernel for release 6 or later of the
1390 MIPS32 architecture. New MIPS processors, starting with the Warrior
1391 family, are based on a MIPS32r6 processor. If you own an older
1392 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1394 config CPU_MIPS64_R1
1395 bool "MIPS64 Release 1"
1396 depends on SYS_HAS_CPU_MIPS64_R1
1397 select CPU_HAS_PREFETCH
1398 select CPU_SUPPORTS_32BIT_KERNEL
1399 select CPU_SUPPORTS_64BIT_KERNEL
1400 select CPU_SUPPORTS_HIGHMEM
1401 select CPU_SUPPORTS_HUGEPAGES
1403 Choose this option to build a kernel for release 1 or later of the
1404 MIPS64 architecture. Many modern embedded systems with a 64-bit
1405 MIPS processor are based on a MIPS64 processor. If you know the
1406 specific type of processor in your system, choose those that one
1407 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1408 Release 2 of the MIPS64 architecture is available since several
1409 years so chances are you even have a MIPS64 Release 2 processor
1410 in which case you should choose CPU_MIPS64_R2 instead for better
1413 config CPU_MIPS64_R2
1414 bool "MIPS64 Release 2"
1415 depends on SYS_HAS_CPU_MIPS64_R2
1416 select CPU_HAS_PREFETCH
1417 select CPU_SUPPORTS_32BIT_KERNEL
1418 select CPU_SUPPORTS_64BIT_KERNEL
1419 select CPU_SUPPORTS_HIGHMEM
1420 select CPU_SUPPORTS_HUGEPAGES
1421 select CPU_SUPPORTS_MSA
1423 Choose this option to build a kernel for release 2 or later of the
1424 MIPS64 architecture. Many modern embedded systems with a 64-bit
1425 MIPS processor are based on a MIPS64 processor. If you know the
1426 specific type of processor in your system, choose those that one
1427 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1429 config CPU_MIPS64_R6
1430 bool "MIPS64 Release 6"
1431 depends on SYS_HAS_CPU_MIPS64_R6
1432 select CPU_HAS_PREFETCH
1433 select CPU_SUPPORTS_32BIT_KERNEL
1434 select CPU_SUPPORTS_64BIT_KERNEL
1435 select CPU_SUPPORTS_HIGHMEM
1436 select CPU_SUPPORTS_MSA
1438 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1440 Choose this option to build a kernel for release 6 or later of the
1441 MIPS64 architecture. New MIPS processors, starting with the Warrior
1442 family, are based on a MIPS64r6 processor. If you own an older
1443 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1447 depends on SYS_HAS_CPU_R3000
1449 select CPU_SUPPORTS_32BIT_KERNEL
1450 select CPU_SUPPORTS_HIGHMEM
1452 Please make sure to pick the right CPU type. Linux/MIPS is not
1453 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1454 *not* work on R4000 machines and vice versa. However, since most
1455 of the supported machines have an R4000 (or similar) CPU, R4x00
1456 might be a safe bet. If the resulting kernel does not work,
1457 try to recompile with R3000.
1461 depends on SYS_HAS_CPU_TX39XX
1462 select CPU_SUPPORTS_32BIT_KERNEL
1466 depends on SYS_HAS_CPU_VR41XX
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_64BIT_KERNEL
1470 The options selects support for the NEC VR4100 series of processors.
1471 Only choose this option if you have one of these processors as a
1472 kernel built with this option will not run on any other type of
1473 processor or vice versa.
1477 depends on SYS_HAS_CPU_R4300
1478 select CPU_SUPPORTS_32BIT_KERNEL
1479 select CPU_SUPPORTS_64BIT_KERNEL
1481 MIPS Technologies R4300-series processors.
1485 depends on SYS_HAS_CPU_R4X00
1486 select CPU_SUPPORTS_32BIT_KERNEL
1487 select CPU_SUPPORTS_64BIT_KERNEL
1488 select CPU_SUPPORTS_HUGEPAGES
1490 MIPS Technologies R4000-series processors other than 4300, including
1491 the R4000, R4400, R4600, and 4700.
1495 depends on SYS_HAS_CPU_TX49XX
1496 select CPU_HAS_PREFETCH
1497 select CPU_SUPPORTS_32BIT_KERNEL
1498 select CPU_SUPPORTS_64BIT_KERNEL
1499 select CPU_SUPPORTS_HUGEPAGES
1503 depends on SYS_HAS_CPU_R5000
1504 select CPU_SUPPORTS_32BIT_KERNEL
1505 select CPU_SUPPORTS_64BIT_KERNEL
1506 select CPU_SUPPORTS_HUGEPAGES
1508 MIPS Technologies R5000-series processors other than the Nevada.
1512 depends on SYS_HAS_CPU_R5432
1513 select CPU_SUPPORTS_32BIT_KERNEL
1514 select CPU_SUPPORTS_64BIT_KERNEL
1515 select CPU_SUPPORTS_HUGEPAGES
1519 depends on SYS_HAS_CPU_R5500
1520 select CPU_SUPPORTS_32BIT_KERNEL
1521 select CPU_SUPPORTS_64BIT_KERNEL
1522 select CPU_SUPPORTS_HUGEPAGES
1524 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1529 depends on SYS_HAS_CPU_R6000
1530 select CPU_SUPPORTS_32BIT_KERNEL
1532 MIPS Technologies R6000 and R6000A series processors. Note these
1533 processors are extremely rare and the support for them is incomplete.
1537 depends on SYS_HAS_CPU_NEVADA
1538 select CPU_SUPPORTS_32BIT_KERNEL
1539 select CPU_SUPPORTS_64BIT_KERNEL
1540 select CPU_SUPPORTS_HUGEPAGES
1542 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1546 depends on SYS_HAS_CPU_R8000
1547 select CPU_HAS_PREFETCH
1548 select CPU_SUPPORTS_64BIT_KERNEL
1550 MIPS Technologies R8000 processors. Note these processors are
1551 uncommon and the support for them is incomplete.
1555 depends on SYS_HAS_CPU_R10000
1556 select CPU_HAS_PREFETCH
1557 select CPU_SUPPORTS_32BIT_KERNEL
1558 select CPU_SUPPORTS_64BIT_KERNEL
1559 select CPU_SUPPORTS_HIGHMEM
1560 select CPU_SUPPORTS_HUGEPAGES
1562 MIPS Technologies R10000-series processors.
1566 depends on SYS_HAS_CPU_RM7000
1567 select CPU_HAS_PREFETCH
1568 select CPU_SUPPORTS_32BIT_KERNEL
1569 select CPU_SUPPORTS_64BIT_KERNEL
1570 select CPU_SUPPORTS_HIGHMEM
1571 select CPU_SUPPORTS_HUGEPAGES
1575 depends on SYS_HAS_CPU_SB1
1576 select CPU_SUPPORTS_32BIT_KERNEL
1577 select CPU_SUPPORTS_64BIT_KERNEL
1578 select CPU_SUPPORTS_HIGHMEM
1579 select CPU_SUPPORTS_HUGEPAGES
1580 select WEAK_ORDERING
1582 config CPU_CAVIUM_OCTEON
1583 bool "Cavium Octeon processor"
1584 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1585 select CPU_HAS_PREFETCH
1586 select CPU_SUPPORTS_64BIT_KERNEL
1587 select WEAK_ORDERING
1588 select CPU_SUPPORTS_HIGHMEM
1589 select CPU_SUPPORTS_HUGEPAGES
1590 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1591 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1592 select MIPS_L1_CACHE_SHIFT_7
1594 The Cavium Octeon processor is a highly integrated chip containing
1595 many ethernet hardware widgets for networking tasks. The processor
1596 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1597 Full details can be found at http://www.caviumnetworks.com.
1600 bool "Broadcom BMIPS"
1601 depends on SYS_HAS_CPU_BMIPS
1603 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1604 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1605 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1606 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1607 select CPU_SUPPORTS_32BIT_KERNEL
1608 select DMA_NONCOHERENT
1610 select SWAP_IO_SPACE
1611 select WEAK_ORDERING
1612 select CPU_SUPPORTS_HIGHMEM
1613 select CPU_HAS_PREFETCH
1615 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1618 bool "Netlogic XLR SoC"
1619 depends on SYS_HAS_CPU_XLR
1620 select CPU_SUPPORTS_32BIT_KERNEL
1621 select CPU_SUPPORTS_64BIT_KERNEL
1622 select CPU_SUPPORTS_HIGHMEM
1623 select CPU_SUPPORTS_HUGEPAGES
1624 select WEAK_ORDERING
1625 select WEAK_REORDERING_BEYOND_LLSC
1627 Netlogic Microsystems XLR/XLS processors.
1630 bool "Netlogic XLP SoC"
1631 depends on SYS_HAS_CPU_XLP
1632 select CPU_SUPPORTS_32BIT_KERNEL
1633 select CPU_SUPPORTS_64BIT_KERNEL
1634 select CPU_SUPPORTS_HIGHMEM
1635 select WEAK_ORDERING
1636 select WEAK_REORDERING_BEYOND_LLSC
1637 select CPU_HAS_PREFETCH
1639 select CPU_SUPPORTS_HUGEPAGES
1641 Netlogic Microsystems XLP processors.
1644 config CPU_MIPS32_3_5_FEATURES
1645 bool "MIPS32 Release 3.5 Features"
1646 depends on SYS_HAS_CPU_MIPS32_R3_5
1647 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1649 Choose this option to build a kernel for release 2 or later of the
1650 MIPS32 architecture including features from the 3.5 release such as
1651 support for Enhanced Virtual Addressing (EVA).
1653 config CPU_MIPS32_3_5_EVA
1654 bool "Enhanced Virtual Addressing (EVA)"
1655 depends on CPU_MIPS32_3_5_FEATURES
1659 Choose this option if you want to enable the Enhanced Virtual
1660 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1661 One of its primary benefits is an increase in the maximum size
1662 of lowmem (up to 3GB). If unsure, say 'N' here.
1664 config CPU_MIPS32_R5_FEATURES
1665 bool "MIPS32 Release 5 Features"
1666 depends on SYS_HAS_CPU_MIPS32_R5
1667 depends on CPU_MIPS32_R2
1669 Choose this option to build a kernel for release 2 or later of the
1670 MIPS32 architecture including features from release 5 such as
1671 support for Extended Physical Addressing (XPA).
1673 config CPU_MIPS32_R5_XPA
1674 bool "Extended Physical Addressing (XPA)"
1675 depends on CPU_MIPS32_R5_FEATURES
1677 depends on !PAGE_SIZE_4KB
1678 depends on SYS_SUPPORTS_HIGHMEM
1681 select ARCH_PHYS_ADDR_T_64BIT
1684 Choose this option if you want to enable the Extended Physical
1685 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1686 benefit is to increase physical addressing equal to or greater
1687 than 40 bits. Note that this has the side effect of turning on
1688 64-bit addressing which in turn makes the PTEs 64-bit in size.
1689 If unsure, say 'N' here.
1692 config CPU_NOP_WORKAROUNDS
1695 config CPU_JUMP_WORKAROUNDS
1698 config CPU_LOONGSON2F_WORKAROUNDS
1699 bool "Loongson 2F Workarounds"
1701 select CPU_NOP_WORKAROUNDS
1702 select CPU_JUMP_WORKAROUNDS
1704 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1705 require workarounds. Without workarounds the system may hang
1706 unexpectedly. For more information please refer to the gas
1707 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1709 Loongson 2F03 and later have fixed these issues and no workarounds
1710 are needed. The workarounds have no significant side effect on them
1711 but may decrease the performance of the system so this option should
1712 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1715 If unsure, please say Y.
1716 endif # CPU_LOONGSON2F
1718 config SYS_SUPPORTS_ZBOOT
1720 select HAVE_KERNEL_GZIP
1721 select HAVE_KERNEL_BZIP2
1722 select HAVE_KERNEL_LZ4
1723 select HAVE_KERNEL_LZMA
1724 select HAVE_KERNEL_LZO
1725 select HAVE_KERNEL_XZ
1727 config SYS_SUPPORTS_ZBOOT_UART16550
1729 select SYS_SUPPORTS_ZBOOT
1731 config CPU_LOONGSON2
1733 select CPU_SUPPORTS_32BIT_KERNEL
1734 select CPU_SUPPORTS_64BIT_KERNEL
1735 select CPU_SUPPORTS_HIGHMEM
1736 select CPU_SUPPORTS_HUGEPAGES
1738 config CPU_LOONGSON1
1742 select CPU_HAS_PREFETCH
1743 select CPU_SUPPORTS_32BIT_KERNEL
1744 select CPU_SUPPORTS_HIGHMEM
1745 select CPU_SUPPORTS_CPUFREQ
1747 config CPU_BMIPS32_3300
1748 select SMP_UP if SMP
1751 config CPU_BMIPS4350
1753 select SYS_SUPPORTS_SMP
1754 select SYS_SUPPORTS_HOTPLUG_CPU
1756 config CPU_BMIPS4380
1758 select MIPS_L1_CACHE_SHIFT_6
1759 select SYS_SUPPORTS_SMP
1760 select SYS_SUPPORTS_HOTPLUG_CPU
1762 config CPU_BMIPS5000
1764 select MIPS_CPU_SCACHE
1765 select MIPS_L1_CACHE_SHIFT_7
1766 select SYS_SUPPORTS_SMP
1767 select SYS_SUPPORTS_HOTPLUG_CPU
1769 config SYS_HAS_CPU_LOONGSON3
1771 select CPU_SUPPORTS_CPUFREQ
1773 config SYS_HAS_CPU_LOONGSON2E
1776 config SYS_HAS_CPU_LOONGSON2F
1778 select CPU_SUPPORTS_CPUFREQ
1779 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1780 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1782 config SYS_HAS_CPU_LOONGSON1B
1785 config SYS_HAS_CPU_MIPS32_R1
1788 config SYS_HAS_CPU_MIPS32_R2
1791 config SYS_HAS_CPU_MIPS32_R3_5
1794 config SYS_HAS_CPU_MIPS32_R5
1797 config SYS_HAS_CPU_MIPS32_R6
1800 config SYS_HAS_CPU_MIPS64_R1
1803 config SYS_HAS_CPU_MIPS64_R2
1806 config SYS_HAS_CPU_MIPS64_R6
1809 config SYS_HAS_CPU_R3000
1812 config SYS_HAS_CPU_TX39XX
1815 config SYS_HAS_CPU_VR41XX
1818 config SYS_HAS_CPU_R4300
1821 config SYS_HAS_CPU_R4X00
1824 config SYS_HAS_CPU_TX49XX
1827 config SYS_HAS_CPU_R5000
1830 config SYS_HAS_CPU_R5432
1833 config SYS_HAS_CPU_R5500
1836 config SYS_HAS_CPU_R6000
1839 config SYS_HAS_CPU_NEVADA
1842 config SYS_HAS_CPU_R8000
1845 config SYS_HAS_CPU_R10000
1848 config SYS_HAS_CPU_RM7000
1851 config SYS_HAS_CPU_SB1
1854 config SYS_HAS_CPU_CAVIUM_OCTEON
1857 config SYS_HAS_CPU_BMIPS
1860 config SYS_HAS_CPU_BMIPS32_3300
1862 select SYS_HAS_CPU_BMIPS
1864 config SYS_HAS_CPU_BMIPS4350
1866 select SYS_HAS_CPU_BMIPS
1868 config SYS_HAS_CPU_BMIPS4380
1870 select SYS_HAS_CPU_BMIPS
1872 config SYS_HAS_CPU_BMIPS5000
1874 select SYS_HAS_CPU_BMIPS
1876 config SYS_HAS_CPU_XLR
1879 config SYS_HAS_CPU_XLP
1882 config MIPS_MALTA_PM
1883 depends on MIPS_MALTA
1889 # CPU may reorder R->R, R->W, W->R, W->W
1890 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1892 config WEAK_ORDERING
1896 # CPU may reorder reads and writes beyond LL/SC
1897 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1899 config WEAK_REORDERING_BEYOND_LLSC
1904 # These two indicate any level of the MIPS32 and MIPS64 architecture
1908 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1912 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1915 # These two indicate the revision of the architecture, either Release 1 or Release 2
1919 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1923 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1928 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1937 config SYS_SUPPORTS_32BIT_KERNEL
1939 config SYS_SUPPORTS_64BIT_KERNEL
1941 config CPU_SUPPORTS_32BIT_KERNEL
1943 config CPU_SUPPORTS_64BIT_KERNEL
1945 config CPU_SUPPORTS_CPUFREQ
1947 config CPU_SUPPORTS_ADDRWINCFG
1949 config CPU_SUPPORTS_HUGEPAGES
1951 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1953 config MIPS_PGD_C0_CONTEXT
1955 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1958 # Set to y for ptrace access to watch registers.
1960 config HARDWARE_WATCHPOINTS
1962 default y if CPU_MIPSR1 || CPU_MIPSR2
1967 prompt "Kernel code model"
1969 You should only select this option if you have a workload that
1970 actually benefits from 64-bit processing or if your machine has
1971 large memory. You will only be presented a single option in this
1972 menu if your system does not support both 32-bit and 64-bit kernels.
1975 bool "32-bit kernel"
1976 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1979 Select this option if you want to build a 32-bit kernel.
1982 bool "64-bit kernel"
1983 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1985 Select this option if you want to build a 64-bit kernel.
1990 bool "KVM Guest Kernel"
1991 depends on BROKEN_ON_SMP
1993 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1995 config KVM_GUEST_TIMER_FREQ
1996 int "Count/Compare Timer Frequency (MHz)"
1997 depends on KVM_GUEST
2000 Set this to non-zero if building a guest kernel for KVM to skip RTC
2001 emulation when determining guest CPU Frequency. Instead, the guest's
2002 timer frequency is specified directly.
2005 prompt "Kernel page size"
2006 default PAGE_SIZE_4KB
2008 config PAGE_SIZE_4KB
2010 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2012 This option select the standard 4kB Linux page size. On some
2013 R3000-family processors this is the only available page size. Using
2014 4kB page size will minimize memory consumption and is therefore
2015 recommended for low memory systems.
2017 config PAGE_SIZE_8KB
2019 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2021 Using 8kB page size will result in higher performance kernel at
2022 the price of higher memory consumption. This option is available
2023 only on R8000 and cnMIPS processors. Note that you will need a
2024 suitable Linux distribution to support this.
2026 config PAGE_SIZE_16KB
2028 depends on !CPU_R3000 && !CPU_TX39XX
2030 Using 16kB page size will result in higher performance kernel at
2031 the price of higher memory consumption. This option is available on
2032 all non-R3000 family processors. Note that you will need a suitable
2033 Linux distribution to support this.
2035 config PAGE_SIZE_32KB
2037 depends on CPU_CAVIUM_OCTEON
2039 Using 32kB page size will result in higher performance kernel at
2040 the price of higher memory consumption. This option is available
2041 only on cnMIPS cores. Note that you will need a suitable Linux
2042 distribution to support this.
2044 config PAGE_SIZE_64KB
2046 depends on !CPU_R3000 && !CPU_TX39XX
2048 Using 64kB page size will result in higher performance kernel at
2049 the price of higher memory consumption. This option is available on
2050 all non-R3000 family processor. Not that at the time of this
2051 writing this option is still high experimental.
2055 config FORCE_MAX_ZONEORDER
2056 int "Maximum zone order"
2057 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2058 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2059 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2060 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2061 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2062 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2066 The kernel memory allocator divides physically contiguous memory
2067 blocks into "zones", where each zone is a power of two number of
2068 pages. This option selects the largest power of two that the kernel
2069 keeps in the memory allocator. If you need to allocate very large
2070 blocks of physically contiguous memory, then you may need to
2071 increase this value.
2073 This config option is actually maximum order plus one. For example,
2074 a value of 11 means that the largest free memory block is 2^10 pages.
2076 The page size is not necessarily 4KB. Keep this in mind
2077 when choosing a value for this option.
2082 config IP22_CPU_SCACHE
2087 # Support for a MIPS32 / MIPS64 style S-caches
2089 config MIPS_CPU_SCACHE
2093 config R5000_CPU_SCACHE
2097 config RM7000_CPU_SCACHE
2101 config SIBYTE_DMA_PAGEOPS
2102 bool "Use DMA to clear/copy pages"
2105 Instead of using the CPU to zero and copy pages, use a Data Mover
2106 channel. These DMA channels are otherwise unused by the standard
2107 SiByte Linux port. Seems to give a small performance benefit.
2109 config CPU_HAS_PREFETCH
2112 config CPU_GENERIC_DUMP_TLB
2114 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2118 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2120 config CPU_R4K_CACHE_TLB
2122 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2125 bool "MIPS MT SMP support (1 TC on each available VPE)"
2126 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2127 select CPU_MIPSR2_IRQ_VI
2128 select CPU_MIPSR2_IRQ_EI
2134 select SYS_SUPPORTS_SMP
2135 select SYS_SUPPORTS_SCHED_SMT
2136 select MIPS_PERF_SHARED_TC_COUNTERS
2138 This is a kernel model which is known as SMVP. This is supported
2139 on cores with the MT ASE and uses the available VPEs to implement
2140 virtual processors which supports SMP. This is equivalent to the
2141 Intel Hyperthreading feature. For further information go to
2142 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2148 bool "SMT (multithreading) scheduler support"
2149 depends on SYS_SUPPORTS_SCHED_SMT
2152 SMT scheduler support improves the CPU scheduler's decision making
2153 when dealing with MIPS MT enabled cores at a cost of slightly
2154 increased overhead in some places. If unsure say N here.
2156 config SYS_SUPPORTS_SCHED_SMT
2159 config SYS_SUPPORTS_MULTITHREADING
2162 config MIPS_MT_FPAFF
2163 bool "Dynamic FPU affinity for FP-intensive threads"
2165 depends on MIPS_MT_SMP
2167 config MIPSR2_TO_R6_EMULATOR
2168 bool "MIPS R2-to-R6 emulator"
2169 depends on CPU_MIPSR6 && !SMP
2172 Choose this option if you want to run non-R6 MIPS userland code.
2173 Even if you say 'Y' here, the emulator will still be disabled by
2174 default. You can enable it using the 'mipsr2emu' kernel option.
2175 The only reason this is a build-time option is to save ~14K from the
2177 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2178 depends on SMP && CPU_MIPSR6
2180 config MIPS_VPE_LOADER
2181 bool "VPE loader support."
2182 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2183 select CPU_MIPSR2_IRQ_VI
2184 select CPU_MIPSR2_IRQ_EI
2187 Includes a loader for loading an elf relocatable object
2188 onto another VPE and running it.
2190 config MIPS_VPE_LOADER_CMP
2193 depends on MIPS_VPE_LOADER && MIPS_CMP
2195 config MIPS_VPE_LOADER_MT
2198 depends on MIPS_VPE_LOADER && !MIPS_CMP
2200 config MIPS_VPE_LOADER_TOM
2201 bool "Load VPE program into memory hidden from linux"
2202 depends on MIPS_VPE_LOADER
2205 The loader can use memory that is present but has been hidden from
2206 Linux using the kernel command line option "mem=xxMB". It's up to
2207 you to ensure the amount you put in the option and the space your
2208 program requires is less or equal to the amount physically present.
2210 config MIPS_VPE_APSP_API
2211 bool "Enable support for AP/SP API (RTLX)"
2212 depends on MIPS_VPE_LOADER
2215 config MIPS_VPE_APSP_API_CMP
2218 depends on MIPS_VPE_APSP_API && MIPS_CMP
2220 config MIPS_VPE_APSP_API_MT
2223 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2226 bool "MIPS CMP framework support (DEPRECATED)"
2227 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2231 select SYS_SUPPORTS_SMP
2232 select WEAK_ORDERING
2235 Select this if you are using a bootloader which implements the "CMP
2236 framework" protocol (ie. YAMON) and want your kernel to make use of
2237 its ability to start secondary CPUs.
2239 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2243 bool "MIPS Coherent Processing System support"
2244 depends on SYS_SUPPORTS_MIPS_CPS && !CPU_MIPSR6
2247 select MIPS_CPS_PM if HOTPLUG_CPU
2250 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2251 select SYS_SUPPORTS_HOTPLUG_CPU
2252 select SYS_SUPPORTS_SMP
2253 select WEAK_ORDERING
2255 Select this if you wish to run an SMP kernel across multiple cores
2256 within a MIPS Coherent Processing System. When this option is
2257 enabled the kernel will probe for other cores and boot them with
2258 no external assistance. It is safe to enable this when hardware
2259 support is unavailable.
2275 config SB1_PASS_2_WORKAROUNDS
2277 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2280 config SB1_PASS_2_1_WORKAROUNDS
2282 depends on CPU_SB1 && CPU_SB1_PASS_2
2286 config ARCH_PHYS_ADDR_T_64BIT
2290 prompt "SmartMIPS or microMIPS ASE support"
2292 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2295 Select this if you want neither microMIPS nor SmartMIPS support
2297 config CPU_HAS_SMARTMIPS
2298 depends on SYS_SUPPORTS_SMARTMIPS
2301 SmartMIPS is a extension of the MIPS32 architecture aimed at
2302 increased security at both hardware and software level for
2303 smartcards. Enabling this option will allow proper use of the
2304 SmartMIPS instructions by Linux applications. However a kernel with
2305 this option will not work on a MIPS core without SmartMIPS core. If
2306 you don't know you probably don't have SmartMIPS and should say N
2309 config CPU_MICROMIPS
2310 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2313 When this option is enabled the kernel will be built using the
2319 bool "Support for the MIPS SIMD Architecture"
2320 depends on CPU_SUPPORTS_MSA
2321 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2323 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2324 and a set of SIMD instructions to operate on them. When this option
2325 is enabled the kernel will support allocating & switching MSA
2326 vector register contexts. If you know that your kernel will only be
2327 running on CPUs which do not support MSA or that your userland will
2328 not be making use of it then you may wish to say N here to reduce
2329 the size & complexity of your kernel.
2340 # Vectored interrupt mode is an R2 feature
2342 config CPU_MIPSR2_IRQ_VI
2346 # Extended interrupt mode is an R2 feature
2348 config CPU_MIPSR2_IRQ_EI
2353 depends on !CPU_R3000
2359 config CPU_DADDI_WORKAROUNDS
2362 config CPU_R4000_WORKAROUNDS
2364 select CPU_R4400_WORKAROUNDS
2366 config CPU_R4400_WORKAROUNDS
2370 # - Highmem only makes sense for the 32-bit kernel.
2371 # - The current highmem code will only work properly on physically indexed
2372 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2373 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2374 # moment we protect the user and offer the highmem option only on machines
2375 # where it's known to be safe. This will not offer highmem on a few systems
2376 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2377 # indexed CPUs but we're playing safe.
2378 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2379 # know they might have memory configurations that could make use of highmem
2383 bool "High Memory Support"
2384 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2386 config CPU_SUPPORTS_HIGHMEM
2389 config SYS_SUPPORTS_HIGHMEM
2392 config SYS_SUPPORTS_SMARTMIPS
2395 config SYS_SUPPORTS_MICROMIPS
2398 config SYS_SUPPORTS_MIPS16
2401 This option must be set if a kernel might be executed on a MIPS16-
2402 enabled CPU even if MIPS16 is not actually being used. In other
2403 words, it makes the kernel MIPS16-tolerant.
2405 config CPU_SUPPORTS_MSA
2408 config ARCH_FLATMEM_ENABLE
2410 depends on !NUMA && !CPU_LOONGSON2
2412 config ARCH_DISCONTIGMEM_ENABLE
2414 default y if SGI_IP27
2416 Say Y to support efficient handling of discontiguous physical memory,
2417 for architectures which are either NUMA (Non-Uniform Memory Access)
2418 or have huge holes in the physical address space for other reasons.
2419 See <file:Documentation/vm/numa> for more.
2421 config ARCH_SPARSEMEM_ENABLE
2423 select SPARSEMEM_STATIC
2427 depends on SYS_SUPPORTS_NUMA
2429 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2430 Access). This option improves performance on systems with more
2431 than two nodes; on two node systems it is generally better to
2432 leave it disabled; on single node systems disable this option
2435 config SYS_SUPPORTS_NUMA
2441 depends on NEED_MULTIPLE_NODES
2443 config HW_PERF_EVENTS
2444 bool "Enable hardware performance counter support for perf events"
2445 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2448 Enable hardware performance counter support for perf events. If
2449 disabled, perf events will use software events only.
2454 bool "Multi-Processing support"
2455 depends on SYS_SUPPORTS_SMP
2457 This enables support for systems with more than one CPU. If you have
2458 a system with only one CPU, say N. If you have a system with more
2459 than one CPU, say Y.
2461 If you say N here, the kernel will run on uni- and multiprocessor
2462 machines, but will use only one CPU of a multiprocessor machine. If
2463 you say Y here, the kernel will run on many, but not all,
2464 uniprocessor machines. On a uniprocessor machine, the kernel
2465 will run faster if you say N here.
2467 People using multiprocessor machines who say Y here should also say
2468 Y to "Enhanced Real Time Clock Support", below.
2470 See also the SMP-HOWTO available at
2471 <http://www.tldp.org/docs.html#howto>.
2473 If you don't know what to do here, say N.
2478 config SYS_SUPPORTS_MIPS_CMP
2481 config SYS_SUPPORTS_MIPS_CPS
2484 config SYS_SUPPORTS_SMP
2487 config NR_CPUS_DEFAULT_4
2490 config NR_CPUS_DEFAULT_8
2493 config NR_CPUS_DEFAULT_16
2496 config NR_CPUS_DEFAULT_32
2499 config NR_CPUS_DEFAULT_64
2503 int "Maximum number of CPUs (2-256)"
2506 default "4" if NR_CPUS_DEFAULT_4
2507 default "8" if NR_CPUS_DEFAULT_8
2508 default "16" if NR_CPUS_DEFAULT_16
2509 default "32" if NR_CPUS_DEFAULT_32
2510 default "64" if NR_CPUS_DEFAULT_64
2512 This allows you to specify the maximum number of CPUs which this
2513 kernel will support. The maximum supported value is 32 for 32-bit
2514 kernel and 64 for 64-bit kernels; the minimum value which makes
2515 sense is 1 for Qemu (useful only for kernel debugging purposes)
2516 and 2 for all others.
2518 This is purely to save memory - each supported CPU adds
2519 approximately eight kilobytes to the kernel image. For best
2520 performance should round up your number of processors to the next
2523 config MIPS_PERF_SHARED_TC_COUNTERS
2527 # Timer Interrupt Frequency Configuration
2531 prompt "Timer frequency"
2534 Allows the configuration of the timer frequency.
2537 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2540 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2543 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2546 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2549 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2552 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2555 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2558 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2562 config SYS_SUPPORTS_24HZ
2565 config SYS_SUPPORTS_48HZ
2568 config SYS_SUPPORTS_100HZ
2571 config SYS_SUPPORTS_128HZ
2574 config SYS_SUPPORTS_250HZ
2577 config SYS_SUPPORTS_256HZ
2580 config SYS_SUPPORTS_1000HZ
2583 config SYS_SUPPORTS_1024HZ
2586 config SYS_SUPPORTS_ARBIT_HZ
2588 default y if !SYS_SUPPORTS_24HZ && \
2589 !SYS_SUPPORTS_48HZ && \
2590 !SYS_SUPPORTS_100HZ && \
2591 !SYS_SUPPORTS_128HZ && \
2592 !SYS_SUPPORTS_250HZ && \
2593 !SYS_SUPPORTS_256HZ && \
2594 !SYS_SUPPORTS_1000HZ && \
2595 !SYS_SUPPORTS_1024HZ
2601 default 100 if HZ_100
2602 default 128 if HZ_128
2603 default 250 if HZ_250
2604 default 256 if HZ_256
2605 default 1000 if HZ_1000
2606 default 1024 if HZ_1024
2609 def_bool HIGH_RES_TIMERS
2611 source "kernel/Kconfig.preempt"
2614 bool "Kexec system call"
2617 kexec is a system call that implements the ability to shutdown your
2618 current kernel, and to start another kernel. It is like a reboot
2619 but it is independent of the system firmware. And like a reboot
2620 you can start any kernel with it, not just Linux.
2622 The name comes from the similarity to the exec system call.
2624 It is an ongoing process to be certain the hardware in a machine
2625 is properly shutdown, so do not be surprised if this code does not
2626 initially work for you. As of this writing the exact hardware
2627 interface is strongly in flux, so no good recommendation can be
2631 bool "Kernel crash dumps"
2633 Generate crash dump after being started by kexec.
2634 This should be normally only set in special crash dump kernels
2635 which are loaded in the main kernel with kexec-tools into
2636 a specially reserved region and then later executed after
2637 a crash by kdump/kexec. The crash dump kernel must be compiled
2638 to a memory address not used by the main kernel or firmware using
2641 config PHYSICAL_START
2642 hex "Physical address where the kernel is loaded"
2643 default "0xffffffff84000000" if 64BIT
2644 default "0x84000000" if 32BIT
2645 depends on CRASH_DUMP
2647 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2648 If you plan to use kernel for capturing the crash dump change
2649 this value to start of the reserved region (the "X" value as
2650 specified in the "crashkernel=YM@XM" command line boot parameter
2651 passed to the panic-ed kernel).
2654 bool "Enable seccomp to safely compute untrusted bytecode"
2658 This kernel feature is useful for number crunching applications
2659 that may need to compute untrusted bytecode during their
2660 execution. By using pipes or other transports made available to
2661 the process as file descriptors supporting the read/write
2662 syscalls, it's possible to isolate those applications in
2663 their own address space using seccomp. Once seccomp is
2664 enabled via /proc/<pid>/seccomp, it cannot be disabled
2665 and the task is only allowed to execute a few safe syscalls
2666 defined by each seccomp mode.
2668 If unsure, say Y. Only embedded should say N here.
2670 config MIPS_O32_FP64_SUPPORT
2671 bool "Support for O32 binaries using 64-bit FP"
2672 depends on 32BIT || MIPS32_O32
2674 When this is enabled, the kernel will support use of 64-bit floating
2675 point registers with binaries using the O32 ABI along with the
2676 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2677 32-bit MIPS systems this support is at the cost of increasing the
2678 size and complexity of the compiled FPU emulator. Thus if you are
2679 running a MIPS32 system and know that none of your userland binaries
2680 will require 64-bit floating point, you may wish to reduce the size
2681 of your kernel & potentially improve FP emulation performance by
2684 Although binutils currently supports use of this flag the details
2685 concerning its effect upon the O32 ABI in userland are still being
2686 worked on. In order to avoid userland becoming dependant upon current
2687 behaviour before the details have been finalised, this option should
2688 be considered experimental and only enabled by those working upon
2696 select OF_EARLY_FLATTREE
2703 prompt "Kernel appended dtb support" if OF
2704 default MIPS_NO_APPENDED_DTB
2706 config MIPS_NO_APPENDED_DTB
2709 Do not enable appended dtb support.
2711 config MIPS_RAW_APPENDED_DTB
2714 With this option, the boot code will look for a device tree binary
2715 DTB) appended to raw vmlinux.bin (without decompressor).
2716 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2718 This is meant as a backward compatibility convenience for those
2719 systems with a bootloader that can't be upgraded to accommodate
2720 the documented boot protocol using a device tree.
2722 Beware that there is very little in terms of protection against
2723 this option being confused by leftover garbage in memory that might
2724 look like a DTB header after a reboot if no actual DTB is appended
2725 to vmlinux.bin. Do not leave this option active in a production kernel
2726 if you don't intend to always append a DTB.
2728 config MIPS_ZBOOT_APPENDED_DTB
2730 depends on SYS_SUPPORTS_ZBOOT
2732 With this option, the boot code will look for a device tree binary
2733 DTB) appended to raw vmlinuz.bin (with decompressor).
2734 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2736 This is meant as a backward compatibility convenience for those
2737 systems with a bootloader that can't be upgraded to accommodate
2738 the documented boot protocol using a device tree.
2740 Beware that there is very little in terms of protection against
2741 this option being confused by leftover garbage in memory that might
2742 look like a DTB header after a reboot if no actual DTB is appended
2743 to vmlinuz.bin. Do not leave this option active in a production kernel
2744 if you don't intend to always append a DTB.
2749 config LOCKDEP_SUPPORT
2753 config STACKTRACE_SUPPORT
2757 config PGTABLE_LEVELS
2759 default 3 if 64BIT && !PAGE_SIZE_64KB
2762 source "init/Kconfig"
2764 source "kernel/Kconfig.freezer"
2766 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2774 bool "Support for PCI controller"
2775 depends on HW_HAS_PCI
2777 select NO_GENERIC_PCI_IOPORT_MAP
2779 Find out whether you have a PCI motherboard. PCI is the name of a
2780 bus system, i.e. the way the CPU talks to the other stuff inside
2781 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2785 bool "Support for HT-linked PCI"
2787 depends on CPU_LOONGSON3
2791 Loongson family machines use Hyper-Transport bus for inter-core
2792 connection and device connection. The PCI bus is a subordinate
2793 linked at HT. Choose Y for Loongson-3 based machines.
2798 source "drivers/pci/Kconfig"
2800 source "drivers/pci/pcie/Kconfig"
2803 # ISA support is now enabled via select. Too many systems still have the one
2804 # or other ISA chip on the board that users don't know about so don't expect
2805 # users to choose the right thing ...
2812 depends on HW_HAS_EISA
2814 select GENERIC_ISA_DMA
2816 The Extended Industry Standard Architecture (EISA) bus was
2817 developed as an open alternative to the IBM MicroChannel bus.
2819 The EISA bus provided some of the features of the IBM MicroChannel
2820 bus while maintaining backward compatibility with cards made for
2821 the older ISA bus. The EISA bus saw limited use between 1988 and
2822 1995 when it was made obsolete by the PCI bus.
2824 Say Y here if you are building a kernel for an EISA-based machine.
2828 source "drivers/eisa/Kconfig"
2831 bool "TURBOchannel support"
2832 depends on MACH_DECSTATION
2834 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2835 processors. TURBOchannel programming specifications are available
2837 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2839 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2840 Linux driver support status is documented at:
2841 <http://www.linux-mips.org/wiki/DECstation>
2851 select MIPS_EXTERNAL_TIMER
2859 source "drivers/pcmcia/Kconfig"
2861 source "drivers/pci/hotplug/Kconfig"
2864 tristate "RapidIO support"
2868 If you say Y here, the kernel will include drivers and
2869 infrastructure code to support RapidIO interconnect devices.
2871 source "drivers/rapidio/Kconfig"
2875 menu "Executable file formats"
2877 source "fs/Kconfig.binfmt"
2882 config MIPS32_COMPAT
2888 config SYSVIPC_COMPAT
2892 bool "Kernel support for o32 binaries"
2894 select ARCH_WANT_OLD_COMPAT_IPC
2896 select MIPS32_COMPAT
2897 select SYSVIPC_COMPAT if SYSVIPC
2899 Select this option if you want to run o32 binaries. These are pure
2900 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2901 existing binaries are in this format.
2906 bool "Kernel support for n32 binaries"
2909 select MIPS32_COMPAT
2910 select SYSVIPC_COMPAT if SYSVIPC
2912 Select this option if you want to run n32 binaries. These are
2913 64-bit binaries using 32-bit quantities for addressing and certain
2914 data that would normally be 64-bit. They are used in special
2921 default y if MIPS32_O32 || MIPS32_N32
2925 menu "Power management options"
2927 config ARCH_HIBERNATION_POSSIBLE
2929 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2931 config ARCH_SUSPEND_POSSIBLE
2933 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2935 source "kernel/power/Kconfig"
2939 config MIPS_EXTERNAL_TIMER
2942 menu "CPU Power Management"
2944 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2945 source "drivers/cpufreq/Kconfig"
2948 source "drivers/cpuidle/Kconfig"
2952 source "net/Kconfig"
2954 source "drivers/Kconfig"
2956 source "drivers/firmware/Kconfig"
2960 source "arch/mips/Kconfig.debug"
2962 source "security/Kconfig"
2964 source "crypto/Kconfig"
2966 source "lib/Kconfig"
2968 source "arch/mips/kvm/Kconfig"