4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select ARCH_MIGHT_HAVE_PC_SERIO
6 select HAVE_CONTEXT_TRACKING
7 select HAVE_GENERIC_DMA_COHERENT
10 select HAVE_PERF_EVENTS
12 select HAVE_PERF_USER_STACK_DUMP
13 select PERF_USE_VMALLOC
15 select HAVE_ARCH_SECCOMP_FILTER
16 select HAVE_ARCH_TRACEHOOK
17 select HAVE_BPF_JIT if !CPU_MICROMIPS
18 select ARCH_HAVE_CUSTOM_GPIO_H
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_DEBUG_KMEMLEAK
27 select HAVE_SYSCALL_TRACEPOINTS
28 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
29 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
30 select RTC_LIB if !MACH_LOONGSON
31 select GENERIC_ATOMIC64 if !64BIT
32 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
34 select HAVE_DMA_CONTIGUOUS
35 select HAVE_DMA_API_DEBUG
36 select GENERIC_IRQ_PROBE
37 select GENERIC_IRQ_SHOW
38 select GENERIC_PCI_IOMAP
39 select HAVE_ARCH_JUMP_LABEL
40 select ARCH_WANT_IPC_PARSE_VERSION
41 select IRQ_FORCED_THREADING
43 select HAVE_MEMBLOCK_NODE_MAP
44 select ARCH_DISCARD_MEMBLOCK
45 select GENERIC_SMP_IDLE_THREAD
46 select BUILDTIME_EXTABLE_SORT
47 select GENERIC_CLOCKEVENTS
48 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
49 select GENERIC_CMOS_UPDATE
50 select HAVE_MOD_ARCH_SPECIFIC
52 select MODULES_USE_ELF_REL if MODULES
53 select MODULES_USE_ELF_RELA if MODULES && 64BIT
54 select CLONE_BACKWARDS
55 select HAVE_DEBUG_STACKOVERFLOW
56 select HAVE_CC_STACKPROTECTOR
57 select CPU_PM if CPU_IDLE
58 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
59 select ARCH_BINFMT_ELF_STATE
60 select SYSCTL_EXCEPTION_TRACE
61 select HAVE_VIRT_CPU_ACCOUNTING_GEN
62 select HAVE_IRQ_TIME_ACCOUNTING
64 menu "Machine selection"
71 bool "Alchemy processor based machines"
72 select ARCH_PHYS_ADDR_T_64BIT
76 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
77 select SYS_HAS_CPU_MIPS32_R1
78 select SYS_SUPPORTS_32BIT_KERNEL
79 select SYS_SUPPORTS_APM_EMULATION
80 select ARCH_REQUIRE_GPIOLIB
81 select SYS_SUPPORTS_ZBOOT
85 bool "Texas Instruments AR7"
87 select DMA_NONCOHERENT
93 select SYS_HAS_CPU_MIPS32_R1
94 select SYS_HAS_EARLY_PRINTK
95 select SYS_SUPPORTS_32BIT_KERNEL
96 select SYS_SUPPORTS_LITTLE_ENDIAN
97 select SYS_SUPPORTS_MIPS16
98 select SYS_SUPPORTS_ZBOOT_UART16550
99 select ARCH_REQUIRE_GPIOLIB
103 Support for the Texas Instruments AR7 System-on-a-Chip
104 family: TNETD7100, 7200 and 7300.
107 bool "Atheros AR231x/AR531x SoC support"
110 select DMA_NONCOHERENT
113 select SYS_HAS_CPU_MIPS32_R1
114 select SYS_SUPPORTS_BIG_ENDIAN
115 select SYS_SUPPORTS_32BIT_KERNEL
116 select SYS_HAS_EARLY_PRINTK
118 Support for Atheros AR231x and Atheros AR531x based boards
121 bool "Atheros AR71XX/AR724X/AR913X based boards"
122 select ARCH_REQUIRE_GPIOLIB
126 select DMA_NONCOHERENT
131 select SYS_HAS_CPU_MIPS32_R2
132 select SYS_HAS_EARLY_PRINTK
133 select SYS_SUPPORTS_32BIT_KERNEL
134 select SYS_SUPPORTS_BIG_ENDIAN
135 select SYS_SUPPORTS_MIPS16
137 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
140 bool "Broadcom Generic BMIPS kernel"
142 select NO_EXCEPT_FILL
148 select BCM7038_L1_IRQ
149 select BCM7120_L2_IRQ
150 select BRCMSTB_L2_IRQ
152 select RAW_IRQ_ACCESSORS
153 select DMA_NONCOHERENT
154 select SYS_SUPPORTS_32BIT_KERNEL
155 select SYS_SUPPORTS_LITTLE_ENDIAN
156 select SYS_SUPPORTS_BIG_ENDIAN
157 select SYS_SUPPORTS_HIGHMEM
158 select SYS_HAS_CPU_BMIPS32_3300
159 select SYS_HAS_CPU_BMIPS4350
160 select SYS_HAS_CPU_BMIPS4380
161 select SYS_HAS_CPU_BMIPS5000
163 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
164 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
165 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
166 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
168 Build a generic DT-based kernel image that boots on select
169 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
170 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
171 must be set appropriately for your board.
174 bool "Broadcom BCM47XX based boards"
175 select ARCH_WANT_OPTIONAL_GPIOLIB
179 select DMA_NONCOHERENT
182 select SYS_HAS_CPU_MIPS32_R1
183 select NO_EXCEPT_FILL
184 select SYS_SUPPORTS_32BIT_KERNEL
185 select SYS_SUPPORTS_LITTLE_ENDIAN
186 select SYS_SUPPORTS_MIPS16
187 select SYS_HAS_EARLY_PRINTK
188 select USE_GENERIC_EARLY_PRINTK_8250
190 select LEDS_GPIO_REGISTER
192 Support for BCM47XX based boards
195 bool "Broadcom BCM63XX based boards"
200 select DMA_NONCOHERENT
202 select SYS_SUPPORTS_32BIT_KERNEL
203 select SYS_SUPPORTS_BIG_ENDIAN
204 select SYS_HAS_EARLY_PRINTK
206 select ARCH_REQUIRE_GPIOLIB
208 select MIPS_L1_CACHE_SHIFT_4
210 Support for BCM63XX based boards
217 select DMA_NONCOHERENT
223 select PCI_GT64XXX_PCI0
225 select SYS_HAS_CPU_NEVADA
226 select SYS_HAS_EARLY_PRINTK
227 select SYS_SUPPORTS_32BIT_KERNEL
228 select SYS_SUPPORTS_64BIT_KERNEL
229 select SYS_SUPPORTS_LITTLE_ENDIAN
230 select USE_GENERIC_EARLY_PRINTK_8250
232 config MACH_DECSTATION
236 select CEVT_R4K if CPU_R4X00
238 select CSRC_R4K if CPU_R4X00
239 select CPU_DADDI_WORKAROUNDS if 64BIT
240 select CPU_R4000_WORKAROUNDS if 64BIT
241 select CPU_R4400_WORKAROUNDS if 64BIT
242 select DMA_NONCOHERENT
245 select SYS_HAS_CPU_R3000
246 select SYS_HAS_CPU_R4X00
247 select SYS_SUPPORTS_32BIT_KERNEL
248 select SYS_SUPPORTS_64BIT_KERNEL
249 select SYS_SUPPORTS_LITTLE_ENDIAN
250 select SYS_SUPPORTS_128HZ
251 select SYS_SUPPORTS_256HZ
252 select SYS_SUPPORTS_1024HZ
253 select MIPS_L1_CACHE_SHIFT_4
255 This enables support for DEC's MIPS based workstations. For details
256 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
257 DECstation porting pages on <http://decstation.unix-ag.org/>.
259 If you have one of the following DECstation Models you definitely
260 want to choose R4xx0 for the CPU Type:
267 otherwise choose R3000.
270 bool "Jazz family of machines"
273 select ARCH_MAY_HAVE_PC_FDC
276 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
277 select GENERIC_ISA_DMA
278 select HAVE_PCSPKR_PLATFORM
283 select SYS_HAS_CPU_R4X00
284 select SYS_SUPPORTS_32BIT_KERNEL
285 select SYS_SUPPORTS_64BIT_KERNEL
286 select SYS_SUPPORTS_100HZ
288 This a family of machines based on the MIPS R4030 chipset which was
289 used by several vendors to build RISC/os and Windows NT workstations.
290 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
291 Olivetti M700-10 workstations.
294 bool "Ingenic JZ4740 based machines"
295 select SYS_HAS_CPU_MIPS32_R1
296 select SYS_SUPPORTS_32BIT_KERNEL
297 select SYS_SUPPORTS_LITTLE_ENDIAN
298 select SYS_SUPPORTS_ZBOOT_UART16550
299 select DMA_NONCOHERENT
301 select ARCH_REQUIRE_GPIOLIB
302 select SYS_HAS_EARLY_PRINTK
304 select GENERIC_IRQ_CHIP
307 bool "Lantiq based platforms"
308 select DMA_NONCOHERENT
312 select SYS_HAS_CPU_MIPS32_R1
313 select SYS_HAS_CPU_MIPS32_R2
314 select SYS_SUPPORTS_BIG_ENDIAN
315 select SYS_SUPPORTS_32BIT_KERNEL
316 select SYS_SUPPORTS_MIPS16
317 select SYS_SUPPORTS_MULTITHREADING
318 select SYS_HAS_EARLY_PRINTK
319 select ARCH_REQUIRE_GPIOLIB
322 select HAVE_MACH_CLKDEV
326 select PINCTRL_LANTIQ
327 select ARCH_HAS_RESET_CONTROLLER
328 select RESET_CONTROLLER
331 bool "LASAT Networks platforms"
335 select DMA_NONCOHERENT
336 select SYS_HAS_EARLY_PRINTK
339 select PCI_GT64XXX_PCI0
341 select R5000_CPU_SCACHE
342 select SYS_HAS_CPU_R5000
343 select SYS_SUPPORTS_32BIT_KERNEL
344 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
345 select SYS_SUPPORTS_LITTLE_ENDIAN
348 bool "Loongson family of machines"
349 select SYS_SUPPORTS_ZBOOT
351 This enables the support of Loongson family of machines.
353 Loongson is a family of general-purpose MIPS-compatible CPUs.
354 developed at Institute of Computing Technology (ICT),
355 Chinese Academy of Sciences (CAS) in the People's Republic
356 of China. The chief architect is Professor Weiwu Hu.
358 config MACH_LOONGSON1
359 bool "Loongson 1 family of machines"
360 select SYS_SUPPORTS_ZBOOT
362 This enables support for the Loongson 1 based machines.
364 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
365 the ICT (Institute of Computing Technology) and the Chinese Academy
368 config MACH_PISTACHIO
369 bool "IMG Pistachio SoC based boards"
370 select ARCH_REQUIRE_GPIOLIB
374 select CLKSRC_MIPS_GIC
377 select DMA_MAYBE_COHERENT
381 select MIPS_CPU_SCACHE
385 select SYS_HAS_CPU_MIPS32_R2
386 select SYS_SUPPORTS_32BIT_KERNEL
387 select SYS_SUPPORTS_LITTLE_ENDIAN
388 select SYS_SUPPORTS_MIPS_CPS
389 select SYS_SUPPORTS_MULTITHREADING
390 select SYS_SUPPORTS_ZBOOT
393 This enables support for the IMG Pistachio SoC platform.
396 bool "MIPS Malta board"
397 select ARCH_MAY_HAVE_PC_FDC
402 select CLKSRC_MIPS_GIC
403 select DMA_MAYBE_COHERENT
404 select GENERIC_ISA_DMA
405 select HAVE_PCSPKR_PLATFORM
412 select MIPS_CPU_SCACHE
413 select MIPS_L1_CACHE_SHIFT_6
414 select PCI_GT64XXX_PCI0
417 select SYS_HAS_CPU_MIPS32_R1
418 select SYS_HAS_CPU_MIPS32_R2
419 select SYS_HAS_CPU_MIPS32_R3_5
420 select SYS_HAS_CPU_MIPS32_R5
421 select SYS_HAS_CPU_MIPS32_R6
422 select SYS_HAS_CPU_MIPS64_R1
423 select SYS_HAS_CPU_MIPS64_R2
424 select SYS_HAS_CPU_MIPS64_R6
425 select SYS_HAS_CPU_NEVADA
426 select SYS_HAS_CPU_RM7000
427 select SYS_SUPPORTS_32BIT_KERNEL
428 select SYS_SUPPORTS_64BIT_KERNEL
429 select SYS_SUPPORTS_BIG_ENDIAN
430 select SYS_SUPPORTS_HIGHMEM
431 select SYS_SUPPORTS_LITTLE_ENDIAN
432 select SYS_SUPPORTS_MICROMIPS
433 select SYS_SUPPORTS_MIPS_CMP
434 select SYS_SUPPORTS_MIPS_CPS
435 select SYS_SUPPORTS_MIPS16
436 select SYS_SUPPORTS_MULTITHREADING
437 select SYS_SUPPORTS_SMARTMIPS
438 select SYS_SUPPORTS_ZBOOT
440 This enables support for the MIPS Technologies Malta evaluation
444 bool "MIPS SEAD3 board"
450 select CLKSRC_MIPS_GIC
451 select CPU_MIPSR2_IRQ_VI
452 select CPU_MIPSR2_IRQ_EI
453 select DMA_NONCOHERENT
458 select SYS_HAS_CPU_MIPS32_R1
459 select SYS_HAS_CPU_MIPS32_R2
460 select SYS_HAS_CPU_MIPS64_R1
461 select SYS_HAS_EARLY_PRINTK
462 select SYS_SUPPORTS_32BIT_KERNEL
463 select SYS_SUPPORTS_64BIT_KERNEL
464 select SYS_SUPPORTS_BIG_ENDIAN
465 select SYS_SUPPORTS_LITTLE_ENDIAN
466 select SYS_SUPPORTS_SMARTMIPS
467 select SYS_SUPPORTS_MICROMIPS
468 select SYS_SUPPORTS_MIPS16
469 select USB_EHCI_BIG_ENDIAN_DESC
470 select USB_EHCI_BIG_ENDIAN_MMIO
473 This enables support for the MIPS Technologies SEAD3 evaluation
477 bool "NEC EMMA2RH Mark-eins board"
481 This enables support for the NEC Electronics Mark-eins boards.
484 bool "NEC VR4100 series based machines"
487 select SYS_HAS_CPU_VR41XX
488 select SYS_SUPPORTS_MIPS16
489 select ARCH_REQUIRE_GPIOLIB
492 bool "NXP STB220 board"
495 Support for NXP Semiconductors STB220 Development Board.
502 Support for NXP Semiconductors STB225 Development Board.
505 bool "PMC-Sierra MSP chipsets"
508 select DMA_NONCOHERENT
510 select NO_EXCEPT_FILL
512 select SYS_HAS_CPU_MIPS32_R1
513 select SYS_HAS_CPU_MIPS32_R2
514 select SYS_SUPPORTS_32BIT_KERNEL
515 select SYS_SUPPORTS_BIG_ENDIAN
516 select SYS_SUPPORTS_MIPS16
519 select SERIAL_8250_CONSOLE
520 select USB_EHCI_BIG_ENDIAN_MMIO
521 select USB_EHCI_BIG_ENDIAN_DESC
523 This adds support for the PMC-Sierra family of Multi-Service
524 Processor System-On-A-Chips. These parts include a number
525 of integrated peripherals, interfaces and DSPs in addition to
526 a variety of MIPS cores.
529 bool "Ralink based machines"
533 select DMA_NONCOHERENT
536 select SYS_HAS_CPU_MIPS32_R1
537 select SYS_HAS_CPU_MIPS32_R2
538 select SYS_SUPPORTS_32BIT_KERNEL
539 select SYS_SUPPORTS_LITTLE_ENDIAN
540 select SYS_SUPPORTS_MIPS16
541 select SYS_HAS_EARLY_PRINTK
542 select HAVE_MACH_CLKDEV
544 select ARCH_HAS_RESET_CONTROLLER
545 select RESET_CONTROLLER
548 bool "SGI IP22 (Indy/Indigo2)"
554 select DEFAULT_SGI_PARTITION
555 select DMA_NONCOHERENT
559 select IP22_CPU_SCACHE
561 select GENERIC_ISA_DMA_SUPPORT_BROKEN
563 select SGI_HAS_INDYDOG
569 select SYS_HAS_CPU_R4X00
570 select SYS_HAS_CPU_R5000
572 # Disable EARLY_PRINTK for now since it leads to overwritten prom
573 # memory during early boot on some machines.
575 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
576 # for a more details discussion
578 # select SYS_HAS_EARLY_PRINTK
579 select SYS_SUPPORTS_32BIT_KERNEL
580 select SYS_SUPPORTS_64BIT_KERNEL
581 select SYS_SUPPORTS_BIG_ENDIAN
582 select MIPS_L1_CACHE_SHIFT_7
584 This are the SGI Indy, Challenge S and Indigo2, as well as certain
585 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
586 that runs on these, say Y here.
589 bool "SGI IP27 (Origin200/2000)"
593 select DEFAULT_SGI_PARTITION
595 select SYS_HAS_EARLY_PRINTK
597 select NR_CPUS_DEFAULT_64
598 select SYS_HAS_CPU_R10000
599 select SYS_SUPPORTS_64BIT_KERNEL
600 select SYS_SUPPORTS_BIG_ENDIAN
601 select SYS_SUPPORTS_NUMA
602 select SYS_SUPPORTS_SMP
603 select MIPS_L1_CACHE_SHIFT_7
605 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
606 workstations. To compile a Linux kernel that runs on these, say Y
610 bool "SGI IP28 (Indigo2 R10k)"
616 select DEFAULT_SGI_PARTITION
617 select DMA_NONCOHERENT
618 select GENERIC_ISA_DMA_SUPPORT_BROKEN
624 select SGI_HAS_INDYDOG
630 select SYS_HAS_CPU_R10000
632 # Disable EARLY_PRINTK for now since it leads to overwritten prom
633 # memory during early boot on some machines.
635 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
636 # for a more details discussion
638 # select SYS_HAS_EARLY_PRINTK
639 select SYS_SUPPORTS_64BIT_KERNEL
640 select SYS_SUPPORTS_BIG_ENDIAN
641 select MIPS_L1_CACHE_SHIFT_7
643 This is the SGI Indigo2 with R10000 processor. To compile a Linux
644 kernel that runs on these, say Y here.
653 select DMA_NONCOHERENT
656 select R5000_CPU_SCACHE
657 select RM7000_CPU_SCACHE
658 select SYS_HAS_CPU_R5000
659 select SYS_HAS_CPU_R10000 if BROKEN
660 select SYS_HAS_CPU_RM7000
661 select SYS_HAS_CPU_NEVADA
662 select SYS_SUPPORTS_64BIT_KERNEL
663 select SYS_SUPPORTS_BIG_ENDIAN
665 If you want this kernel to run on SGI O2 workstation, say Y here.
668 bool "Sibyte BCM91120C-CRhine"
671 select SIBYTE_BCM1120
673 select SYS_HAS_CPU_SB1
674 select SYS_SUPPORTS_BIG_ENDIAN
675 select SYS_SUPPORTS_LITTLE_ENDIAN
678 bool "Sibyte BCM91120x-Carmel"
681 select SIBYTE_BCM1120
683 select SYS_HAS_CPU_SB1
684 select SYS_SUPPORTS_BIG_ENDIAN
685 select SYS_SUPPORTS_LITTLE_ENDIAN
688 bool "Sibyte BCM91125C-CRhone"
691 select SIBYTE_BCM1125
693 select SYS_HAS_CPU_SB1
694 select SYS_SUPPORTS_BIG_ENDIAN
695 select SYS_SUPPORTS_HIGHMEM
696 select SYS_SUPPORTS_LITTLE_ENDIAN
699 bool "Sibyte BCM91125E-Rhone"
702 select SIBYTE_BCM1125H
704 select SYS_HAS_CPU_SB1
705 select SYS_SUPPORTS_BIG_ENDIAN
706 select SYS_SUPPORTS_LITTLE_ENDIAN
709 bool "Sibyte BCM91250A-SWARM"
712 select HAVE_PATA_PLATFORM
715 select SYS_HAS_CPU_SB1
716 select SYS_SUPPORTS_BIG_ENDIAN
717 select SYS_SUPPORTS_HIGHMEM
718 select SYS_SUPPORTS_LITTLE_ENDIAN
719 select ZONE_DMA32 if 64BIT
721 config SIBYTE_LITTLESUR
722 bool "Sibyte BCM91250C2-LittleSur"
725 select HAVE_PATA_PLATFORM
728 select SYS_HAS_CPU_SB1
729 select SYS_SUPPORTS_BIG_ENDIAN
730 select SYS_SUPPORTS_HIGHMEM
731 select SYS_SUPPORTS_LITTLE_ENDIAN
733 config SIBYTE_SENTOSA
734 bool "Sibyte BCM91250E-Sentosa"
739 select SYS_HAS_CPU_SB1
740 select SYS_SUPPORTS_BIG_ENDIAN
741 select SYS_SUPPORTS_LITTLE_ENDIAN
744 bool "Sibyte BCM91480B-BigSur"
747 select NR_CPUS_DEFAULT_4
748 select SIBYTE_BCM1x80
750 select SYS_HAS_CPU_SB1
751 select SYS_SUPPORTS_BIG_ENDIAN
752 select SYS_SUPPORTS_HIGHMEM
753 select SYS_SUPPORTS_LITTLE_ENDIAN
754 select ZONE_DMA32 if 64BIT
757 bool "SNI RM200/300/400"
758 select FW_ARC if CPU_LITTLE_ENDIAN
759 select FW_ARC32 if CPU_LITTLE_ENDIAN
760 select FW_SNIPROM if CPU_BIG_ENDIAN
761 select ARCH_MAY_HAVE_PC_FDC
765 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
766 select DMA_NONCOHERENT
767 select GENERIC_ISA_DMA
768 select HAVE_PCSPKR_PLATFORM
775 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
776 select SYS_HAS_CPU_R4X00
777 select SYS_HAS_CPU_R5000
778 select SYS_HAS_CPU_R10000
779 select R5000_CPU_SCACHE
780 select SYS_HAS_EARLY_PRINTK
781 select SYS_SUPPORTS_32BIT_KERNEL
782 select SYS_SUPPORTS_64BIT_KERNEL
783 select SYS_SUPPORTS_BIG_ENDIAN
784 select SYS_SUPPORTS_HIGHMEM
785 select SYS_SUPPORTS_LITTLE_ENDIAN
787 The SNI RM200/300/400 are MIPS-based machines manufactured by
788 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
789 Technology and now in turn merged with Fujitsu. Say Y here to
790 support this machine type.
793 bool "Toshiba TX39 series based machines"
796 bool "Toshiba TX49 series based machines"
798 config MIKROTIK_RB532
799 bool "Mikrotik RB532 boards"
802 select DMA_NONCOHERENT
805 select SYS_HAS_CPU_MIPS32_R1
806 select SYS_SUPPORTS_32BIT_KERNEL
807 select SYS_SUPPORTS_LITTLE_ENDIAN
810 select ARCH_REQUIRE_GPIOLIB
811 select MIPS_L1_CACHE_SHIFT_4
813 Support the Mikrotik(tm) RouterBoard 532 series,
814 based on the IDT RC32434 SoC.
816 config CAVIUM_OCTEON_SOC
817 bool "Cavium Networks Octeon SoC based boards"
819 select ARCH_PHYS_ADDR_T_64BIT
821 select SYS_SUPPORTS_64BIT_KERNEL
822 select SYS_SUPPORTS_BIG_ENDIAN
824 select SYS_SUPPORTS_LITTLE_ENDIAN
825 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
826 select SYS_HAS_EARLY_PRINTK
827 select SYS_HAS_CPU_CAVIUM_OCTEON
832 select ARCH_REQUIRE_GPIOLIB
835 select ARCH_SPARSEMEM_ENABLE
836 select SYS_SUPPORTS_SMP
837 select NR_CPUS_DEFAULT_16
839 select MTD_COMPLEX_MAPPINGS
841 This option supports all of the Octeon reference boards from Cavium
842 Networks. It builds a kernel that dynamically determines the Octeon
843 CPU type and supports all known board reference implementations.
844 Some of the supported boards are:
851 Say Y here for most Octeon reference boards.
854 bool "Netlogic XLR/XLS based systems"
857 select SYS_HAS_CPU_XLR
858 select SYS_SUPPORTS_SMP
861 select SYS_SUPPORTS_32BIT_KERNEL
862 select SYS_SUPPORTS_64BIT_KERNEL
863 select ARCH_PHYS_ADDR_T_64BIT
864 select SYS_SUPPORTS_BIG_ENDIAN
865 select SYS_SUPPORTS_HIGHMEM
867 select NR_CPUS_DEFAULT_32
871 select ZONE_DMA32 if 64BIT
873 select SYS_HAS_EARLY_PRINTK
874 select SYS_SUPPORTS_ZBOOT
875 select SYS_SUPPORTS_ZBOOT_UART16550
877 Support for systems based on Netlogic XLR and XLS processors.
878 Say Y here if you have a XLR or XLS based board.
881 bool "Netlogic XLP based systems"
884 select SYS_HAS_CPU_XLP
885 select SYS_SUPPORTS_SMP
887 select SYS_SUPPORTS_32BIT_KERNEL
888 select SYS_SUPPORTS_64BIT_KERNEL
889 select ARCH_PHYS_ADDR_T_64BIT
890 select SYS_SUPPORTS_BIG_ENDIAN
891 select SYS_SUPPORTS_LITTLE_ENDIAN
892 select SYS_SUPPORTS_HIGHMEM
894 select NR_CPUS_DEFAULT_32
898 select ZONE_DMA32 if 64BIT
900 select SYS_HAS_EARLY_PRINTK
902 select SYS_SUPPORTS_ZBOOT
903 select SYS_SUPPORTS_ZBOOT_UART16550
905 This board is based on Netlogic XLP Processor.
906 Say Y here if you have a XLP based board.
909 bool "Para-Virtualized guest system"
913 select SYS_SUPPORTS_64BIT_KERNEL
914 select SYS_SUPPORTS_32BIT_KERNEL
915 select SYS_SUPPORTS_BIG_ENDIAN
916 select SYS_SUPPORTS_SMP
917 select NR_CPUS_DEFAULT_4
918 select SYS_HAS_EARLY_PRINTK
919 select SYS_HAS_CPU_MIPS32_R2
920 select SYS_HAS_CPU_MIPS64_R2
921 select SYS_HAS_CPU_CAVIUM_OCTEON
925 This option supports guest running under ????
929 source "arch/mips/alchemy/Kconfig"
930 source "arch/mips/ath25/Kconfig"
931 source "arch/mips/ath79/Kconfig"
932 source "arch/mips/bcm47xx/Kconfig"
933 source "arch/mips/bcm63xx/Kconfig"
934 source "arch/mips/bmips/Kconfig"
935 source "arch/mips/jazz/Kconfig"
936 source "arch/mips/jz4740/Kconfig"
937 source "arch/mips/lantiq/Kconfig"
938 source "arch/mips/lasat/Kconfig"
939 source "arch/mips/pmcs-msp71xx/Kconfig"
940 source "arch/mips/ralink/Kconfig"
941 source "arch/mips/sgi-ip27/Kconfig"
942 source "arch/mips/sibyte/Kconfig"
943 source "arch/mips/txx9/Kconfig"
944 source "arch/mips/vr41xx/Kconfig"
945 source "arch/mips/cavium-octeon/Kconfig"
946 source "arch/mips/loongson/Kconfig"
947 source "arch/mips/loongson1/Kconfig"
948 source "arch/mips/netlogic/Kconfig"
949 source "arch/mips/paravirt/Kconfig"
953 config RWSEM_GENERIC_SPINLOCK
957 config RWSEM_XCHGADD_ALGORITHM
960 config ARCH_HAS_ILOG2_U32
964 config ARCH_HAS_ILOG2_U64
968 config GENERIC_HWEIGHT
972 config GENERIC_CALIBRATE_DELAY
976 config SCHED_OMIT_FRAME_POINTER
981 # Select some configuration options automatically based on user selections.
986 config ARCH_MAY_HAVE_PC_FDC
1023 select ARCH_REQUIRE_GPIOLIB
1029 config ARCH_DMA_ADDR_T_64BIT
1030 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1032 config DMA_MAYBE_COHERENT
1033 select DMA_NONCOHERENT
1039 config DMA_NONCOHERENT
1041 select NEED_DMA_MAP_STATE
1043 config NEED_DMA_MAP_STATE
1046 config SYS_HAS_EARLY_PRINTK
1050 bool "Support for hot-pluggable CPUs"
1051 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1053 Say Y here to allow turning CPUs off and on. CPUs can be
1054 controlled through /sys/devices/system/cpu.
1055 (Note: power management support will enable this option
1056 automatically on SMP systems. )
1057 Say N if you want to disable CPU hotplug.
1059 config SYS_SUPPORTS_HOTPLUG_CPU
1066 config MIPS_BONITO64
1081 config NO_IOPORT_MAP
1087 config GENERIC_ISA_DMA
1089 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1092 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1094 select GENERIC_ISA_DMA
1099 config HOLES_IN_ZONE
1103 # Endianness selection. Sufficiently obscure so many users don't know what to
1104 # answer,so we try hard to limit the available choices. Also the use of a
1105 # choice statement should be more obvious to the user.
1108 prompt "Endianness selection"
1110 Some MIPS machines can be configured for either little or big endian
1111 byte order. These modes require different kernels and a different
1112 Linux distribution. In general there is one preferred byteorder for a
1113 particular system but some systems are just as commonly used in the
1114 one or the other endianness.
1116 config CPU_BIG_ENDIAN
1118 depends on SYS_SUPPORTS_BIG_ENDIAN
1120 config CPU_LITTLE_ENDIAN
1121 bool "Little endian"
1122 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1129 config SYS_SUPPORTS_APM_EMULATION
1132 config SYS_SUPPORTS_BIG_ENDIAN
1135 config SYS_SUPPORTS_LITTLE_ENDIAN
1138 config SYS_SUPPORTS_HUGETLBFS
1140 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1143 config MIPS_HUGE_TLB_SUPPORT
1144 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1165 config PCI_GT64XXX_PCI0
1168 config NO_EXCEPT_FILL
1175 select DMA_NONCOHERENT
1177 select SWAP_IO_SPACE
1178 select SYS_HAS_CPU_R5500
1179 select SYS_SUPPORTS_32BIT_KERNEL
1180 select SYS_SUPPORTS_64BIT_KERNEL
1181 select SYS_SUPPORTS_BIG_ENDIAN
1188 select DMA_NONCOHERENT
1189 select SYS_HAS_CPU_MIPS32_R2
1190 select SYS_SUPPORTS_32BIT_KERNEL
1191 select SYS_SUPPORTS_LITTLE_ENDIAN
1192 select SYS_SUPPORTS_BIG_ENDIAN
1193 select SYS_SUPPORTS_MIPS16
1194 select CPU_MIPSR2_IRQ_VI
1203 config SWAP_IO_SPACE
1206 config SGI_HAS_INDYDOG
1218 config SGI_HAS_ZILOG
1221 config SGI_HAS_I8042
1224 config DEFAULT_SGI_PARTITION
1236 config MIPS_L1_CACHE_SHIFT_4
1239 config MIPS_L1_CACHE_SHIFT_5
1242 config MIPS_L1_CACHE_SHIFT_6
1245 config MIPS_L1_CACHE_SHIFT_7
1248 config MIPS_L1_CACHE_SHIFT
1250 default "7" if MIPS_L1_CACHE_SHIFT_7
1251 default "6" if MIPS_L1_CACHE_SHIFT_6
1252 default "5" if MIPS_L1_CACHE_SHIFT_5
1253 default "4" if MIPS_L1_CACHE_SHIFT_4
1256 config HAVE_STD_PC_SERIAL_PORT
1260 bool "ARC console support"
1261 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1265 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1270 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1279 menu "CPU selection"
1285 config CPU_LOONGSON3
1286 bool "Loongson 3 CPU"
1287 depends on SYS_HAS_CPU_LOONGSON3
1288 select CPU_SUPPORTS_64BIT_KERNEL
1289 select CPU_SUPPORTS_HIGHMEM
1290 select CPU_SUPPORTS_HUGEPAGES
1291 select WEAK_ORDERING
1292 select WEAK_REORDERING_BEYOND_LLSC
1294 The Loongson 3 processor implements the MIPS64R2 instruction
1295 set with many extensions.
1297 config CPU_LOONGSON2E
1299 depends on SYS_HAS_CPU_LOONGSON2E
1300 select CPU_LOONGSON2
1302 The Loongson 2E processor implements the MIPS III instruction set
1303 with many extensions.
1305 It has an internal FPGA northbridge, which is compatible to
1308 config CPU_LOONGSON2F
1310 depends on SYS_HAS_CPU_LOONGSON2F
1311 select CPU_LOONGSON2
1312 select ARCH_REQUIRE_GPIOLIB
1314 The Loongson 2F processor implements the MIPS III instruction set
1315 with many extensions.
1317 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1318 have a similar programming interface with FPGA northbridge used in
1321 config CPU_LOONGSON1B
1323 depends on SYS_HAS_CPU_LOONGSON1B
1324 select CPU_LOONGSON1
1326 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1327 release 2 instruction set.
1329 config CPU_MIPS32_R1
1330 bool "MIPS32 Release 1"
1331 depends on SYS_HAS_CPU_MIPS32_R1
1332 select CPU_HAS_PREFETCH
1333 select CPU_SUPPORTS_32BIT_KERNEL
1334 select CPU_SUPPORTS_HIGHMEM
1336 Choose this option to build a kernel for release 1 or later of the
1337 MIPS32 architecture. Most modern embedded systems with a 32-bit
1338 MIPS processor are based on a MIPS32 processor. If you know the
1339 specific type of processor in your system, choose those that one
1340 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1341 Release 2 of the MIPS32 architecture is available since several
1342 years so chances are you even have a MIPS32 Release 2 processor
1343 in which case you should choose CPU_MIPS32_R2 instead for better
1346 config CPU_MIPS32_R2
1347 bool "MIPS32 Release 2"
1348 depends on SYS_HAS_CPU_MIPS32_R2
1349 select CPU_HAS_PREFETCH
1350 select CPU_SUPPORTS_32BIT_KERNEL
1351 select CPU_SUPPORTS_HIGHMEM
1352 select CPU_SUPPORTS_MSA
1355 Choose this option to build a kernel for release 2 or later of the
1356 MIPS32 architecture. Most modern embedded systems with a 32-bit
1357 MIPS processor are based on a MIPS32 processor. If you know the
1358 specific type of processor in your system, choose those that one
1359 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1361 config CPU_MIPS32_R6
1362 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1363 depends on SYS_HAS_CPU_MIPS32_R6
1364 select CPU_HAS_PREFETCH
1365 select CPU_SUPPORTS_32BIT_KERNEL
1366 select CPU_SUPPORTS_HIGHMEM
1367 select CPU_SUPPORTS_MSA
1370 select MIPS_O32_FP64_SUPPORT
1372 Choose this option to build a kernel for release 6 or later of the
1373 MIPS32 architecture. New MIPS processors, starting with the Warrior
1374 family, are based on a MIPS32r6 processor. If you own an older
1375 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1377 config CPU_MIPS64_R1
1378 bool "MIPS64 Release 1"
1379 depends on SYS_HAS_CPU_MIPS64_R1
1380 select CPU_HAS_PREFETCH
1381 select CPU_SUPPORTS_32BIT_KERNEL
1382 select CPU_SUPPORTS_64BIT_KERNEL
1383 select CPU_SUPPORTS_HIGHMEM
1384 select CPU_SUPPORTS_HUGEPAGES
1386 Choose this option to build a kernel for release 1 or later of the
1387 MIPS64 architecture. Many modern embedded systems with a 64-bit
1388 MIPS processor are based on a MIPS64 processor. If you know the
1389 specific type of processor in your system, choose those that one
1390 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1391 Release 2 of the MIPS64 architecture is available since several
1392 years so chances are you even have a MIPS64 Release 2 processor
1393 in which case you should choose CPU_MIPS64_R2 instead for better
1396 config CPU_MIPS64_R2
1397 bool "MIPS64 Release 2"
1398 depends on SYS_HAS_CPU_MIPS64_R2
1399 select CPU_HAS_PREFETCH
1400 select CPU_SUPPORTS_32BIT_KERNEL
1401 select CPU_SUPPORTS_64BIT_KERNEL
1402 select CPU_SUPPORTS_HIGHMEM
1403 select CPU_SUPPORTS_HUGEPAGES
1404 select CPU_SUPPORTS_MSA
1406 Choose this option to build a kernel for release 2 or later of the
1407 MIPS64 architecture. Many modern embedded systems with a 64-bit
1408 MIPS processor are based on a MIPS64 processor. If you know the
1409 specific type of processor in your system, choose those that one
1410 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1412 config CPU_MIPS64_R6
1413 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1414 depends on SYS_HAS_CPU_MIPS64_R6
1415 select CPU_HAS_PREFETCH
1416 select CPU_SUPPORTS_32BIT_KERNEL
1417 select CPU_SUPPORTS_64BIT_KERNEL
1418 select CPU_SUPPORTS_HIGHMEM
1419 select CPU_SUPPORTS_MSA
1422 Choose this option to build a kernel for release 6 or later of the
1423 MIPS64 architecture. New MIPS processors, starting with the Warrior
1424 family, are based on a MIPS64r6 processor. If you own an older
1425 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1429 depends on SYS_HAS_CPU_R3000
1431 select CPU_SUPPORTS_32BIT_KERNEL
1432 select CPU_SUPPORTS_HIGHMEM
1434 Please make sure to pick the right CPU type. Linux/MIPS is not
1435 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1436 *not* work on R4000 machines and vice versa. However, since most
1437 of the supported machines have an R4000 (or similar) CPU, R4x00
1438 might be a safe bet. If the resulting kernel does not work,
1439 try to recompile with R3000.
1443 depends on SYS_HAS_CPU_TX39XX
1444 select CPU_SUPPORTS_32BIT_KERNEL
1448 depends on SYS_HAS_CPU_VR41XX
1449 select CPU_SUPPORTS_32BIT_KERNEL
1450 select CPU_SUPPORTS_64BIT_KERNEL
1452 The options selects support for the NEC VR4100 series of processors.
1453 Only choose this option if you have one of these processors as a
1454 kernel built with this option will not run on any other type of
1455 processor or vice versa.
1459 depends on SYS_HAS_CPU_R4300
1460 select CPU_SUPPORTS_32BIT_KERNEL
1461 select CPU_SUPPORTS_64BIT_KERNEL
1463 MIPS Technologies R4300-series processors.
1467 depends on SYS_HAS_CPU_R4X00
1468 select CPU_SUPPORTS_32BIT_KERNEL
1469 select CPU_SUPPORTS_64BIT_KERNEL
1470 select CPU_SUPPORTS_HUGEPAGES
1472 MIPS Technologies R4000-series processors other than 4300, including
1473 the R4000, R4400, R4600, and 4700.
1477 depends on SYS_HAS_CPU_TX49XX
1478 select CPU_HAS_PREFETCH
1479 select CPU_SUPPORTS_32BIT_KERNEL
1480 select CPU_SUPPORTS_64BIT_KERNEL
1481 select CPU_SUPPORTS_HUGEPAGES
1485 depends on SYS_HAS_CPU_R5000
1486 select CPU_SUPPORTS_32BIT_KERNEL
1487 select CPU_SUPPORTS_64BIT_KERNEL
1488 select CPU_SUPPORTS_HUGEPAGES
1490 MIPS Technologies R5000-series processors other than the Nevada.
1494 depends on SYS_HAS_CPU_R5432
1495 select CPU_SUPPORTS_32BIT_KERNEL
1496 select CPU_SUPPORTS_64BIT_KERNEL
1497 select CPU_SUPPORTS_HUGEPAGES
1501 depends on SYS_HAS_CPU_R5500
1502 select CPU_SUPPORTS_32BIT_KERNEL
1503 select CPU_SUPPORTS_64BIT_KERNEL
1504 select CPU_SUPPORTS_HUGEPAGES
1506 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1511 depends on SYS_HAS_CPU_R6000
1512 select CPU_SUPPORTS_32BIT_KERNEL
1514 MIPS Technologies R6000 and R6000A series processors. Note these
1515 processors are extremely rare and the support for them is incomplete.
1519 depends on SYS_HAS_CPU_NEVADA
1520 select CPU_SUPPORTS_32BIT_KERNEL
1521 select CPU_SUPPORTS_64BIT_KERNEL
1522 select CPU_SUPPORTS_HUGEPAGES
1524 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1528 depends on SYS_HAS_CPU_R8000
1529 select CPU_HAS_PREFETCH
1530 select CPU_SUPPORTS_64BIT_KERNEL
1532 MIPS Technologies R8000 processors. Note these processors are
1533 uncommon and the support for them is incomplete.
1537 depends on SYS_HAS_CPU_R10000
1538 select CPU_HAS_PREFETCH
1539 select CPU_SUPPORTS_32BIT_KERNEL
1540 select CPU_SUPPORTS_64BIT_KERNEL
1541 select CPU_SUPPORTS_HIGHMEM
1542 select CPU_SUPPORTS_HUGEPAGES
1544 MIPS Technologies R10000-series processors.
1548 depends on SYS_HAS_CPU_RM7000
1549 select CPU_HAS_PREFETCH
1550 select CPU_SUPPORTS_32BIT_KERNEL
1551 select CPU_SUPPORTS_64BIT_KERNEL
1552 select CPU_SUPPORTS_HIGHMEM
1553 select CPU_SUPPORTS_HUGEPAGES
1557 depends on SYS_HAS_CPU_SB1
1558 select CPU_SUPPORTS_32BIT_KERNEL
1559 select CPU_SUPPORTS_64BIT_KERNEL
1560 select CPU_SUPPORTS_HIGHMEM
1561 select CPU_SUPPORTS_HUGEPAGES
1562 select WEAK_ORDERING
1564 config CPU_CAVIUM_OCTEON
1565 bool "Cavium Octeon processor"
1566 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1567 select CPU_HAS_PREFETCH
1568 select CPU_SUPPORTS_64BIT_KERNEL
1569 select WEAK_ORDERING
1570 select CPU_SUPPORTS_HIGHMEM
1571 select CPU_SUPPORTS_HUGEPAGES
1572 select USB_EHCI_BIG_ENDIAN_MMIO
1573 select MIPS_L1_CACHE_SHIFT_7
1575 The Cavium Octeon processor is a highly integrated chip containing
1576 many ethernet hardware widgets for networking tasks. The processor
1577 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1578 Full details can be found at http://www.caviumnetworks.com.
1581 bool "Broadcom BMIPS"
1582 depends on SYS_HAS_CPU_BMIPS
1584 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1585 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1586 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1587 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1588 select CPU_SUPPORTS_32BIT_KERNEL
1589 select DMA_NONCOHERENT
1591 select SWAP_IO_SPACE
1592 select WEAK_ORDERING
1593 select CPU_SUPPORTS_HIGHMEM
1594 select CPU_HAS_PREFETCH
1596 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1599 bool "Netlogic XLR SoC"
1600 depends on SYS_HAS_CPU_XLR
1601 select CPU_SUPPORTS_32BIT_KERNEL
1602 select CPU_SUPPORTS_64BIT_KERNEL
1603 select CPU_SUPPORTS_HIGHMEM
1604 select CPU_SUPPORTS_HUGEPAGES
1605 select WEAK_ORDERING
1606 select WEAK_REORDERING_BEYOND_LLSC
1608 Netlogic Microsystems XLR/XLS processors.
1611 bool "Netlogic XLP SoC"
1612 depends on SYS_HAS_CPU_XLP
1613 select CPU_SUPPORTS_32BIT_KERNEL
1614 select CPU_SUPPORTS_64BIT_KERNEL
1615 select CPU_SUPPORTS_HIGHMEM
1616 select WEAK_ORDERING
1617 select WEAK_REORDERING_BEYOND_LLSC
1618 select CPU_HAS_PREFETCH
1620 select CPU_SUPPORTS_HUGEPAGES
1622 Netlogic Microsystems XLP processors.
1625 config CPU_MIPS32_3_5_FEATURES
1626 bool "MIPS32 Release 3.5 Features"
1627 depends on SYS_HAS_CPU_MIPS32_R3_5
1628 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1630 Choose this option to build a kernel for release 2 or later of the
1631 MIPS32 architecture including features from the 3.5 release such as
1632 support for Enhanced Virtual Addressing (EVA).
1634 config CPU_MIPS32_3_5_EVA
1635 bool "Enhanced Virtual Addressing (EVA)"
1636 depends on CPU_MIPS32_3_5_FEATURES
1640 Choose this option if you want to enable the Enhanced Virtual
1641 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1642 One of its primary benefits is an increase in the maximum size
1643 of lowmem (up to 3GB). If unsure, say 'N' here.
1645 config CPU_MIPS32_R5_FEATURES
1646 bool "MIPS32 Release 5 Features"
1647 depends on SYS_HAS_CPU_MIPS32_R5
1648 depends on CPU_MIPS32_R2
1650 Choose this option to build a kernel for release 2 or later of the
1651 MIPS32 architecture including features from release 5 such as
1652 support for Extended Physical Addressing (XPA).
1654 config CPU_MIPS32_R5_XPA
1655 bool "Extended Physical Addressing (XPA)"
1656 depends on CPU_MIPS32_R5_FEATURES
1658 depends on !PAGE_SIZE_4KB
1659 depends on SYS_SUPPORTS_HIGHMEM
1662 select ARCH_PHYS_ADDR_T_64BIT
1665 Choose this option if you want to enable the Extended Physical
1666 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1667 benefit is to increase physical addressing equal to or greater
1668 than 40 bits. Note that this has the side effect of turning on
1669 64-bit addressing which in turn makes the PTEs 64-bit in size.
1670 If unsure, say 'N' here.
1673 config CPU_NOP_WORKAROUNDS
1676 config CPU_JUMP_WORKAROUNDS
1679 config CPU_LOONGSON2F_WORKAROUNDS
1680 bool "Loongson 2F Workarounds"
1682 select CPU_NOP_WORKAROUNDS
1683 select CPU_JUMP_WORKAROUNDS
1685 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1686 require workarounds. Without workarounds the system may hang
1687 unexpectedly. For more information please refer to the gas
1688 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1690 Loongson 2F03 and later have fixed these issues and no workarounds
1691 are needed. The workarounds have no significant side effect on them
1692 but may decrease the performance of the system so this option should
1693 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1696 If unsure, please say Y.
1697 endif # CPU_LOONGSON2F
1699 config SYS_SUPPORTS_ZBOOT
1701 select HAVE_KERNEL_GZIP
1702 select HAVE_KERNEL_BZIP2
1703 select HAVE_KERNEL_LZ4
1704 select HAVE_KERNEL_LZMA
1705 select HAVE_KERNEL_LZO
1706 select HAVE_KERNEL_XZ
1708 config SYS_SUPPORTS_ZBOOT_UART16550
1710 select SYS_SUPPORTS_ZBOOT
1712 config CPU_LOONGSON2
1714 select CPU_SUPPORTS_32BIT_KERNEL
1715 select CPU_SUPPORTS_64BIT_KERNEL
1716 select CPU_SUPPORTS_HIGHMEM
1717 select CPU_SUPPORTS_HUGEPAGES
1719 config CPU_LOONGSON1
1723 select CPU_HAS_PREFETCH
1724 select CPU_SUPPORTS_32BIT_KERNEL
1725 select CPU_SUPPORTS_HIGHMEM
1726 select CPU_SUPPORTS_CPUFREQ
1728 config CPU_BMIPS32_3300
1729 select SMP_UP if SMP
1732 config CPU_BMIPS4350
1734 select SYS_SUPPORTS_SMP
1735 select SYS_SUPPORTS_HOTPLUG_CPU
1737 config CPU_BMIPS4380
1739 select MIPS_L1_CACHE_SHIFT_6
1740 select SYS_SUPPORTS_SMP
1741 select SYS_SUPPORTS_HOTPLUG_CPU
1743 config CPU_BMIPS5000
1745 select MIPS_CPU_SCACHE
1746 select MIPS_L1_CACHE_SHIFT_7
1747 select SYS_SUPPORTS_SMP
1748 select SYS_SUPPORTS_HOTPLUG_CPU
1750 config SYS_HAS_CPU_LOONGSON3
1752 select CPU_SUPPORTS_CPUFREQ
1754 config SYS_HAS_CPU_LOONGSON2E
1757 config SYS_HAS_CPU_LOONGSON2F
1759 select CPU_SUPPORTS_CPUFREQ
1760 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1761 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1763 config SYS_HAS_CPU_LOONGSON1B
1766 config SYS_HAS_CPU_MIPS32_R1
1769 config SYS_HAS_CPU_MIPS32_R2
1772 config SYS_HAS_CPU_MIPS32_R3_5
1775 config SYS_HAS_CPU_MIPS32_R5
1778 config SYS_HAS_CPU_MIPS32_R6
1781 config SYS_HAS_CPU_MIPS64_R1
1784 config SYS_HAS_CPU_MIPS64_R2
1787 config SYS_HAS_CPU_MIPS64_R6
1790 config SYS_HAS_CPU_R3000
1793 config SYS_HAS_CPU_TX39XX
1796 config SYS_HAS_CPU_VR41XX
1799 config SYS_HAS_CPU_R4300
1802 config SYS_HAS_CPU_R4X00
1805 config SYS_HAS_CPU_TX49XX
1808 config SYS_HAS_CPU_R5000
1811 config SYS_HAS_CPU_R5432
1814 config SYS_HAS_CPU_R5500
1817 config SYS_HAS_CPU_R6000
1820 config SYS_HAS_CPU_NEVADA
1823 config SYS_HAS_CPU_R8000
1826 config SYS_HAS_CPU_R10000
1829 config SYS_HAS_CPU_RM7000
1832 config SYS_HAS_CPU_SB1
1835 config SYS_HAS_CPU_CAVIUM_OCTEON
1838 config SYS_HAS_CPU_BMIPS
1841 config SYS_HAS_CPU_BMIPS32_3300
1843 select SYS_HAS_CPU_BMIPS
1845 config SYS_HAS_CPU_BMIPS4350
1847 select SYS_HAS_CPU_BMIPS
1849 config SYS_HAS_CPU_BMIPS4380
1851 select SYS_HAS_CPU_BMIPS
1853 config SYS_HAS_CPU_BMIPS5000
1855 select SYS_HAS_CPU_BMIPS
1857 config SYS_HAS_CPU_XLR
1860 config SYS_HAS_CPU_XLP
1863 config MIPS_MALTA_PM
1864 depends on MIPS_MALTA
1870 # CPU may reorder R->R, R->W, W->R, W->W
1871 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1873 config WEAK_ORDERING
1877 # CPU may reorder reads and writes beyond LL/SC
1878 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1880 config WEAK_REORDERING_BEYOND_LLSC
1885 # These two indicate any level of the MIPS32 and MIPS64 architecture
1889 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1893 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1896 # These two indicate the revision of the architecture, either Release 1 or Release 2
1900 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1904 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1909 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1918 config SYS_SUPPORTS_32BIT_KERNEL
1920 config SYS_SUPPORTS_64BIT_KERNEL
1922 config CPU_SUPPORTS_32BIT_KERNEL
1924 config CPU_SUPPORTS_64BIT_KERNEL
1926 config CPU_SUPPORTS_CPUFREQ
1928 config CPU_SUPPORTS_ADDRWINCFG
1930 config CPU_SUPPORTS_HUGEPAGES
1932 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1934 config MIPS_PGD_C0_CONTEXT
1936 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1939 # Set to y for ptrace access to watch registers.
1941 config HARDWARE_WATCHPOINTS
1943 default y if CPU_MIPSR1 || CPU_MIPSR2
1948 prompt "Kernel code model"
1950 You should only select this option if you have a workload that
1951 actually benefits from 64-bit processing or if your machine has
1952 large memory. You will only be presented a single option in this
1953 menu if your system does not support both 32-bit and 64-bit kernels.
1956 bool "32-bit kernel"
1957 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1960 Select this option if you want to build a 32-bit kernel.
1962 bool "64-bit kernel"
1963 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1965 Select this option if you want to build a 64-bit kernel.
1970 bool "KVM Guest Kernel"
1971 depends on BROKEN_ON_SMP
1973 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1975 config KVM_GUEST_TIMER_FREQ
1976 int "Count/Compare Timer Frequency (MHz)"
1977 depends on KVM_GUEST
1980 Set this to non-zero if building a guest kernel for KVM to skip RTC
1981 emulation when determining guest CPU Frequency. Instead, the guest's
1982 timer frequency is specified directly.
1985 prompt "Kernel page size"
1986 default PAGE_SIZE_4KB
1988 config PAGE_SIZE_4KB
1990 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1992 This option select the standard 4kB Linux page size. On some
1993 R3000-family processors this is the only available page size. Using
1994 4kB page size will minimize memory consumption and is therefore
1995 recommended for low memory systems.
1997 config PAGE_SIZE_8KB
1999 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2001 Using 8kB page size will result in higher performance kernel at
2002 the price of higher memory consumption. This option is available
2003 only on R8000 and cnMIPS processors. Note that you will need a
2004 suitable Linux distribution to support this.
2006 config PAGE_SIZE_16KB
2008 depends on !CPU_R3000 && !CPU_TX39XX
2010 Using 16kB page size will result in higher performance kernel at
2011 the price of higher memory consumption. This option is available on
2012 all non-R3000 family processors. Note that you will need a suitable
2013 Linux distribution to support this.
2015 config PAGE_SIZE_32KB
2017 depends on CPU_CAVIUM_OCTEON
2019 Using 32kB page size will result in higher performance kernel at
2020 the price of higher memory consumption. This option is available
2021 only on cnMIPS cores. Note that you will need a suitable Linux
2022 distribution to support this.
2024 config PAGE_SIZE_64KB
2026 depends on !CPU_R3000 && !CPU_TX39XX
2028 Using 64kB page size will result in higher performance kernel at
2029 the price of higher memory consumption. This option is available on
2030 all non-R3000 family processor. Not that at the time of this
2031 writing this option is still high experimental.
2035 config FORCE_MAX_ZONEORDER
2036 int "Maximum zone order"
2037 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2038 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2039 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2040 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2041 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2042 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2046 The kernel memory allocator divides physically contiguous memory
2047 blocks into "zones", where each zone is a power of two number of
2048 pages. This option selects the largest power of two that the kernel
2049 keeps in the memory allocator. If you need to allocate very large
2050 blocks of physically contiguous memory, then you may need to
2051 increase this value.
2053 This config option is actually maximum order plus one. For example,
2054 a value of 11 means that the largest free memory block is 2^10 pages.
2056 The page size is not necessarily 4KB. Keep this in mind
2057 when choosing a value for this option.
2062 config IP22_CPU_SCACHE
2067 # Support for a MIPS32 / MIPS64 style S-caches
2069 config MIPS_CPU_SCACHE
2073 config R5000_CPU_SCACHE
2077 config RM7000_CPU_SCACHE
2081 config SIBYTE_DMA_PAGEOPS
2082 bool "Use DMA to clear/copy pages"
2085 Instead of using the CPU to zero and copy pages, use a Data Mover
2086 channel. These DMA channels are otherwise unused by the standard
2087 SiByte Linux port. Seems to give a small performance benefit.
2089 config CPU_HAS_PREFETCH
2092 config CPU_GENERIC_DUMP_TLB
2094 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2098 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2100 config CPU_R4K_CACHE_TLB
2102 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2105 bool "MIPS MT SMP support (1 TC on each available VPE)"
2106 depends on SYS_SUPPORTS_MULTITHREADING
2107 select CPU_MIPSR2_IRQ_VI
2108 select CPU_MIPSR2_IRQ_EI
2114 select SYS_SUPPORTS_SMP
2115 select SYS_SUPPORTS_SCHED_SMT
2116 select MIPS_PERF_SHARED_TC_COUNTERS
2118 This is a kernel model which is known as SMVP. This is supported
2119 on cores with the MT ASE and uses the available VPEs to implement
2120 virtual processors which supports SMP. This is equivalent to the
2121 Intel Hyperthreading feature. For further information go to
2122 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2128 bool "SMT (multithreading) scheduler support"
2129 depends on SYS_SUPPORTS_SCHED_SMT
2132 SMT scheduler support improves the CPU scheduler's decision making
2133 when dealing with MIPS MT enabled cores at a cost of slightly
2134 increased overhead in some places. If unsure say N here.
2136 config SYS_SUPPORTS_SCHED_SMT
2139 config SYS_SUPPORTS_MULTITHREADING
2142 config MIPS_MT_FPAFF
2143 bool "Dynamic FPU affinity for FP-intensive threads"
2145 depends on MIPS_MT_SMP
2147 config MIPSR2_TO_R6_EMULATOR
2148 bool "MIPS R2-to-R6 emulator"
2149 depends on CPU_MIPSR6 && !SMP
2152 Choose this option if you want to run non-R6 MIPS userland code.
2153 Even if you say 'Y' here, the emulator will still be disabled by
2154 default. You can enable it using the 'mipsr2emu' kernel option.
2155 The only reason this is a build-time option is to save ~14K from the
2157 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2158 depends on SMP && CPU_MIPSR6
2160 config MIPS_VPE_LOADER
2161 bool "VPE loader support."
2162 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2163 select CPU_MIPSR2_IRQ_VI
2164 select CPU_MIPSR2_IRQ_EI
2167 Includes a loader for loading an elf relocatable object
2168 onto another VPE and running it.
2170 config MIPS_VPE_LOADER_CMP
2173 depends on MIPS_VPE_LOADER && MIPS_CMP
2175 config MIPS_VPE_LOADER_MT
2178 depends on MIPS_VPE_LOADER && !MIPS_CMP
2180 config MIPS_VPE_LOADER_TOM
2181 bool "Load VPE program into memory hidden from linux"
2182 depends on MIPS_VPE_LOADER
2185 The loader can use memory that is present but has been hidden from
2186 Linux using the kernel command line option "mem=xxMB". It's up to
2187 you to ensure the amount you put in the option and the space your
2188 program requires is less or equal to the amount physically present.
2190 config MIPS_VPE_APSP_API
2191 bool "Enable support for AP/SP API (RTLX)"
2192 depends on MIPS_VPE_LOADER
2195 config MIPS_VPE_APSP_API_CMP
2198 depends on MIPS_VPE_APSP_API && MIPS_CMP
2200 config MIPS_VPE_APSP_API_MT
2203 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2206 bool "MIPS CMP framework support (DEPRECATED)"
2207 depends on SYS_SUPPORTS_MIPS_CMP
2211 select SYS_SUPPORTS_SMP
2212 select WEAK_ORDERING
2215 Select this if you are using a bootloader which implements the "CMP
2216 framework" protocol (ie. YAMON) and want your kernel to make use of
2217 its ability to start secondary CPUs.
2219 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2223 bool "MIPS Coherent Processing System support"
2224 depends on SYS_SUPPORTS_MIPS_CPS && !64BIT
2227 select MIPS_CPS_PM if HOTPLUG_CPU
2230 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2231 select SYS_SUPPORTS_HOTPLUG_CPU
2232 select SYS_SUPPORTS_SMP
2233 select WEAK_ORDERING
2235 Select this if you wish to run an SMP kernel across multiple cores
2236 within a MIPS Coherent Processing System. When this option is
2237 enabled the kernel will probe for other cores and boot them with
2238 no external assistance. It is safe to enable this when hardware
2239 support is unavailable.
2255 config SB1_PASS_1_WORKAROUNDS
2257 depends on CPU_SB1_PASS_1
2260 config SB1_PASS_2_WORKAROUNDS
2262 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2265 config SB1_PASS_2_1_WORKAROUNDS
2267 depends on CPU_SB1 && CPU_SB1_PASS_2
2271 config ARCH_PHYS_ADDR_T_64BIT
2275 prompt "SmartMIPS or microMIPS ASE support"
2277 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2280 Select this if you want neither microMIPS nor SmartMIPS support
2282 config CPU_HAS_SMARTMIPS
2283 depends on SYS_SUPPORTS_SMARTMIPS
2286 SmartMIPS is a extension of the MIPS32 architecture aimed at
2287 increased security at both hardware and software level for
2288 smartcards. Enabling this option will allow proper use of the
2289 SmartMIPS instructions by Linux applications. However a kernel with
2290 this option will not work on a MIPS core without SmartMIPS core. If
2291 you don't know you probably don't have SmartMIPS and should say N
2294 config CPU_MICROMIPS
2295 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2298 When this option is enabled the kernel will be built using the
2304 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2305 depends on CPU_SUPPORTS_MSA
2306 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2308 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2309 and a set of SIMD instructions to operate on them. When this option
2310 is enabled the kernel will support allocating & switching MSA
2311 vector register contexts. If you know that your kernel will only be
2312 running on CPUs which do not support MSA or that your userland will
2313 not be making use of it then you may wish to say N here to reduce
2314 the size & complexity of your kernel.
2325 # Vectored interrupt mode is an R2 feature
2327 config CPU_MIPSR2_IRQ_VI
2331 # Extended interrupt mode is an R2 feature
2333 config CPU_MIPSR2_IRQ_EI
2338 depends on !CPU_R3000
2344 config CPU_DADDI_WORKAROUNDS
2347 config CPU_R4000_WORKAROUNDS
2349 select CPU_R4400_WORKAROUNDS
2351 config CPU_R4400_WORKAROUNDS
2355 # - Highmem only makes sense for the 32-bit kernel.
2356 # - The current highmem code will only work properly on physically indexed
2357 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2358 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2359 # moment we protect the user and offer the highmem option only on machines
2360 # where it's known to be safe. This will not offer highmem on a few systems
2361 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2362 # indexed CPUs but we're playing safe.
2363 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2364 # know they might have memory configurations that could make use of highmem
2368 bool "High Memory Support"
2369 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2371 config CPU_SUPPORTS_HIGHMEM
2374 config SYS_SUPPORTS_HIGHMEM
2377 config SYS_SUPPORTS_SMARTMIPS
2380 config SYS_SUPPORTS_MICROMIPS
2383 config SYS_SUPPORTS_MIPS16
2386 This option must be set if a kernel might be executed on a MIPS16-
2387 enabled CPU even if MIPS16 is not actually being used. In other
2388 words, it makes the kernel MIPS16-tolerant.
2390 config CPU_SUPPORTS_MSA
2393 config ARCH_FLATMEM_ENABLE
2395 depends on !NUMA && !CPU_LOONGSON2
2397 config ARCH_DISCONTIGMEM_ENABLE
2399 default y if SGI_IP27
2401 Say Y to support efficient handling of discontiguous physical memory,
2402 for architectures which are either NUMA (Non-Uniform Memory Access)
2403 or have huge holes in the physical address space for other reasons.
2404 See <file:Documentation/vm/numa> for more.
2406 config ARCH_SPARSEMEM_ENABLE
2408 select SPARSEMEM_STATIC
2412 depends on SYS_SUPPORTS_NUMA
2414 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2415 Access). This option improves performance on systems with more
2416 than two nodes; on two node systems it is generally better to
2417 leave it disabled; on single node systems disable this option
2420 config SYS_SUPPORTS_NUMA
2426 depends on NEED_MULTIPLE_NODES
2428 config HW_PERF_EVENTS
2429 bool "Enable hardware performance counter support for perf events"
2430 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2433 Enable hardware performance counter support for perf events. If
2434 disabled, perf events will use software events only.
2439 bool "Multi-Processing support"
2440 depends on SYS_SUPPORTS_SMP
2442 This enables support for systems with more than one CPU. If you have
2443 a system with only one CPU, say N. If you have a system with more
2444 than one CPU, say Y.
2446 If you say N here, the kernel will run on uni- and multiprocessor
2447 machines, but will use only one CPU of a multiprocessor machine. If
2448 you say Y here, the kernel will run on many, but not all,
2449 uniprocessor machines. On a uniprocessor machine, the kernel
2450 will run faster if you say N here.
2452 People using multiprocessor machines who say Y here should also say
2453 Y to "Enhanced Real Time Clock Support", below.
2455 See also the SMP-HOWTO available at
2456 <http://www.tldp.org/docs.html#howto>.
2458 If you don't know what to do here, say N.
2463 config SYS_SUPPORTS_MIPS_CMP
2466 config SYS_SUPPORTS_MIPS_CPS
2469 config SYS_SUPPORTS_SMP
2472 config NR_CPUS_DEFAULT_4
2475 config NR_CPUS_DEFAULT_8
2478 config NR_CPUS_DEFAULT_16
2481 config NR_CPUS_DEFAULT_32
2484 config NR_CPUS_DEFAULT_64
2488 int "Maximum number of CPUs (2-256)"
2491 default "4" if NR_CPUS_DEFAULT_4
2492 default "8" if NR_CPUS_DEFAULT_8
2493 default "16" if NR_CPUS_DEFAULT_16
2494 default "32" if NR_CPUS_DEFAULT_32
2495 default "64" if NR_CPUS_DEFAULT_64
2497 This allows you to specify the maximum number of CPUs which this
2498 kernel will support. The maximum supported value is 32 for 32-bit
2499 kernel and 64 for 64-bit kernels; the minimum value which makes
2500 sense is 1 for Qemu (useful only for kernel debugging purposes)
2501 and 2 for all others.
2503 This is purely to save memory - each supported CPU adds
2504 approximately eight kilobytes to the kernel image. For best
2505 performance should round up your number of processors to the next
2508 config MIPS_PERF_SHARED_TC_COUNTERS
2512 # Timer Interrupt Frequency Configuration
2516 prompt "Timer frequency"
2519 Allows the configuration of the timer frequency.
2522 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2525 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2528 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2531 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2534 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2537 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2540 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2544 config SYS_SUPPORTS_48HZ
2547 config SYS_SUPPORTS_100HZ
2550 config SYS_SUPPORTS_128HZ
2553 config SYS_SUPPORTS_250HZ
2556 config SYS_SUPPORTS_256HZ
2559 config SYS_SUPPORTS_1000HZ
2562 config SYS_SUPPORTS_1024HZ
2565 config SYS_SUPPORTS_ARBIT_HZ
2567 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2568 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2569 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2570 !SYS_SUPPORTS_1024HZ
2575 default 100 if HZ_100
2576 default 128 if HZ_128
2577 default 250 if HZ_250
2578 default 256 if HZ_256
2579 default 1000 if HZ_1000
2580 default 1024 if HZ_1024
2583 def_bool HIGH_RES_TIMERS
2585 source "kernel/Kconfig.preempt"
2588 bool "Kexec system call"
2590 kexec is a system call that implements the ability to shutdown your
2591 current kernel, and to start another kernel. It is like a reboot
2592 but it is independent of the system firmware. And like a reboot
2593 you can start any kernel with it, not just Linux.
2595 The name comes from the similarity to the exec system call.
2597 It is an ongoing process to be certain the hardware in a machine
2598 is properly shutdown, so do not be surprised if this code does not
2599 initially work for you. As of this writing the exact hardware
2600 interface is strongly in flux, so no good recommendation can be
2604 bool "Kernel crash dumps"
2606 Generate crash dump after being started by kexec.
2607 This should be normally only set in special crash dump kernels
2608 which are loaded in the main kernel with kexec-tools into
2609 a specially reserved region and then later executed after
2610 a crash by kdump/kexec. The crash dump kernel must be compiled
2611 to a memory address not used by the main kernel or firmware using
2614 config PHYSICAL_START
2615 hex "Physical address where the kernel is loaded"
2616 default "0xffffffff84000000" if 64BIT
2617 default "0x84000000" if 32BIT
2618 depends on CRASH_DUMP
2620 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2621 If you plan to use kernel for capturing the crash dump change
2622 this value to start of the reserved region (the "X" value as
2623 specified in the "crashkernel=YM@XM" command line boot parameter
2624 passed to the panic-ed kernel).
2627 bool "Enable seccomp to safely compute untrusted bytecode"
2631 This kernel feature is useful for number crunching applications
2632 that may need to compute untrusted bytecode during their
2633 execution. By using pipes or other transports made available to
2634 the process as file descriptors supporting the read/write
2635 syscalls, it's possible to isolate those applications in
2636 their own address space using seccomp. Once seccomp is
2637 enabled via /proc/<pid>/seccomp, it cannot be disabled
2638 and the task is only allowed to execute a few safe syscalls
2639 defined by each seccomp mode.
2641 If unsure, say Y. Only embedded should say N here.
2643 config MIPS_O32_FP64_SUPPORT
2644 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2645 depends on 32BIT || MIPS32_O32
2647 When this is enabled, the kernel will support use of 64-bit floating
2648 point registers with binaries using the O32 ABI along with the
2649 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2650 32-bit MIPS systems this support is at the cost of increasing the
2651 size and complexity of the compiled FPU emulator. Thus if you are
2652 running a MIPS32 system and know that none of your userland binaries
2653 will require 64-bit floating point, you may wish to reduce the size
2654 of your kernel & potentially improve FP emulation performance by
2657 Although binutils currently supports use of this flag the details
2658 concerning its effect upon the O32 ABI in userland are still being
2659 worked on. In order to avoid userland becoming dependant upon current
2660 behaviour before the details have been finalised, this option should
2661 be considered experimental and only enabled by those working upon
2669 select OF_EARLY_FLATTREE
2677 config LOCKDEP_SUPPORT
2681 config STACKTRACE_SUPPORT
2685 source "init/Kconfig"
2687 source "kernel/Kconfig.freezer"
2689 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2697 bool "Support for PCI controller"
2698 depends on HW_HAS_PCI
2700 select NO_GENERIC_PCI_IOPORT_MAP
2702 Find out whether you have a PCI motherboard. PCI is the name of a
2703 bus system, i.e. the way the CPU talks to the other stuff inside
2704 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2708 bool "Support for HT-linked PCI"
2710 depends on CPU_LOONGSON3
2714 Loongson family machines use Hyper-Transport bus for inter-core
2715 connection and device connection. The PCI bus is a subordinate
2716 linked at HT. Choose Y for Loongson-3 based machines.
2721 source "drivers/pci/Kconfig"
2723 source "drivers/pci/pcie/Kconfig"
2726 # ISA support is now enabled via select. Too many systems still have the one
2727 # or other ISA chip on the board that users don't know about so don't expect
2728 # users to choose the right thing ...
2735 depends on HW_HAS_EISA
2737 select GENERIC_ISA_DMA
2739 The Extended Industry Standard Architecture (EISA) bus was
2740 developed as an open alternative to the IBM MicroChannel bus.
2742 The EISA bus provided some of the features of the IBM MicroChannel
2743 bus while maintaining backward compatibility with cards made for
2744 the older ISA bus. The EISA bus saw limited use between 1988 and
2745 1995 when it was made obsolete by the PCI bus.
2747 Say Y here if you are building a kernel for an EISA-based machine.
2751 source "drivers/eisa/Kconfig"
2754 bool "TURBOchannel support"
2755 depends on MACH_DECSTATION
2757 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2758 processors. TURBOchannel programming specifications are available
2760 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2762 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2763 Linux driver support status is documented at:
2764 <http://www.linux-mips.org/wiki/DECstation>
2774 select MIPS_EXTERNAL_TIMER
2782 source "drivers/pcmcia/Kconfig"
2784 source "drivers/pci/hotplug/Kconfig"
2787 tristate "RapidIO support"
2791 If you say Y here, the kernel will include drivers and
2792 infrastructure code to support RapidIO interconnect devices.
2794 source "drivers/rapidio/Kconfig"
2798 menu "Executable file formats"
2800 source "fs/Kconfig.binfmt"
2805 config MIPS32_COMPAT
2811 config SYSVIPC_COMPAT
2815 bool "Kernel support for o32 binaries"
2817 select ARCH_WANT_OLD_COMPAT_IPC
2819 select MIPS32_COMPAT
2820 select SYSVIPC_COMPAT if SYSVIPC
2822 Select this option if you want to run o32 binaries. These are pure
2823 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2824 existing binaries are in this format.
2829 bool "Kernel support for n32 binaries"
2832 select MIPS32_COMPAT
2833 select SYSVIPC_COMPAT if SYSVIPC
2835 Select this option if you want to run n32 binaries. These are
2836 64-bit binaries using 32-bit quantities for addressing and certain
2837 data that would normally be 64-bit. They are used in special
2844 default y if MIPS32_O32 || MIPS32_N32
2848 menu "Power management options"
2850 config ARCH_HIBERNATION_POSSIBLE
2852 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2854 config ARCH_SUSPEND_POSSIBLE
2856 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2858 source "kernel/power/Kconfig"
2862 config MIPS_EXTERNAL_TIMER
2865 menu "CPU Power Management"
2867 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2868 source "drivers/cpufreq/Kconfig"
2871 source "drivers/cpuidle/Kconfig"
2875 source "net/Kconfig"
2877 source "drivers/Kconfig"
2879 source "drivers/firmware/Kconfig"
2883 source "arch/mips/Kconfig.debug"
2885 source "security/Kconfig"
2887 source "crypto/Kconfig"
2889 source "lib/Kconfig"
2891 source "arch/mips/kvm/Kconfig"