4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select HAVE_CONTEXT_TRACKING
6 select HAVE_GENERIC_DMA_COHERENT
9 select HAVE_PERF_EVENTS
10 select PERF_USE_VMALLOC
12 select HAVE_ARCH_TRACEHOOK
13 select ARCH_HAVE_CUSTOM_GPIO_H
14 select HAVE_FUNCTION_TRACER
15 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
16 select HAVE_DYNAMIC_FTRACE
17 select HAVE_FTRACE_MCOUNT_RECORD
18 select HAVE_C_RECORDMCOUNT
19 select HAVE_FUNCTION_GRAPH_TRACER
21 select HAVE_KRETPROBES
22 select HAVE_DEBUG_KMEMLEAK
23 select HAVE_SYSCALL_TRACEPOINTS
24 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
25 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
26 select RTC_LIB if !MACH_LOONGSON
27 select GENERIC_ATOMIC64 if !64BIT
28 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
30 select HAVE_DMA_API_DEBUG
31 select GENERIC_IRQ_PROBE
32 select GENERIC_IRQ_SHOW
33 select GENERIC_PCI_IOMAP
34 select HAVE_ARCH_JUMP_LABEL
35 select ARCH_WANT_IPC_PARSE_VERSION
36 select IRQ_FORCED_THREADING
38 select HAVE_MEMBLOCK_NODE_MAP
39 select ARCH_DISCARD_MEMBLOCK
40 select GENERIC_SMP_IDLE_THREAD
41 select BUILDTIME_EXTABLE_SORT
42 select GENERIC_CLOCKEVENTS
43 select GENERIC_CMOS_UPDATE
44 select HAVE_MOD_ARCH_SPECIFIC
46 select MODULES_USE_ELF_REL if MODULES
47 select MODULES_USE_ELF_RELA if MODULES && 64BIT
48 select CLONE_BACKWARDS
49 select HAVE_DEBUG_STACKOVERFLOW
51 menu "Machine selection"
58 bool "Alchemy processor based machines"
59 select 64BIT_PHYS_ADDR
63 select SYS_HAS_CPU_MIPS32_R1
64 select SYS_SUPPORTS_32BIT_KERNEL
65 select SYS_SUPPORTS_APM_EMULATION
66 select ARCH_REQUIRE_GPIOLIB
67 select SYS_SUPPORTS_ZBOOT
68 select USB_ARCH_HAS_OHCI
69 select USB_ARCH_HAS_EHCI
72 bool "Texas Instruments AR7"
74 select DMA_NONCOHERENT
80 select SYS_HAS_CPU_MIPS32_R1
81 select SYS_HAS_EARLY_PRINTK
82 select SYS_SUPPORTS_32BIT_KERNEL
83 select SYS_SUPPORTS_LITTLE_ENDIAN
84 select SYS_SUPPORTS_ZBOOT_UART16550
85 select ARCH_REQUIRE_GPIOLIB
89 Support for the Texas Instruments AR7 System-on-a-Chip
90 family: TNETD7100, 7200 and 7300.
93 bool "Atheros AR71XX/AR724X/AR913X based boards"
94 select ARCH_REQUIRE_GPIOLIB
98 select DMA_NONCOHERENT
103 select SYS_HAS_CPU_MIPS32_R2
104 select SYS_HAS_EARLY_PRINTK
105 select SYS_SUPPORTS_32BIT_KERNEL
106 select SYS_SUPPORTS_BIG_ENDIAN
108 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
111 bool "Broadcom BCM47XX based boards"
112 select ARCH_WANT_OPTIONAL_GPIOLIB
116 select DMA_NONCOHERENT
119 select SYS_HAS_CPU_MIPS32_R1
120 select NO_EXCEPT_FILL
121 select SYS_SUPPORTS_32BIT_KERNEL
122 select SYS_SUPPORTS_LITTLE_ENDIAN
123 select SYS_HAS_EARLY_PRINTK
124 select EARLY_PRINTK_8250 if EARLY_PRINTK
126 Support for BCM47XX based boards
129 bool "Broadcom BCM63XX based boards"
133 select DMA_NONCOHERENT
135 select SYS_SUPPORTS_32BIT_KERNEL
136 select SYS_SUPPORTS_BIG_ENDIAN
137 select SYS_HAS_EARLY_PRINTK
139 select ARCH_REQUIRE_GPIOLIB
142 Support for BCM63XX based boards
149 select DMA_NONCOHERENT
150 select EARLY_PRINTK_8250 if EARLY_PRINTK
156 select PCI_GT64XXX_PCI0
158 select SYS_HAS_CPU_NEVADA
159 select SYS_HAS_EARLY_PRINTK
160 select SYS_SUPPORTS_32BIT_KERNEL
161 select SYS_SUPPORTS_64BIT_KERNEL
162 select SYS_SUPPORTS_LITTLE_ENDIAN
164 config MACH_DECSTATION
171 select CPU_DADDI_WORKAROUNDS if 64BIT
172 select CPU_R4000_WORKAROUNDS if 64BIT
173 select CPU_R4400_WORKAROUNDS if 64BIT
174 select DMA_NONCOHERENT
177 select SYS_HAS_CPU_R3000
178 select SYS_HAS_CPU_R4X00
179 select SYS_SUPPORTS_32BIT_KERNEL
180 select SYS_SUPPORTS_64BIT_KERNEL
181 select SYS_SUPPORTS_LITTLE_ENDIAN
182 select SYS_SUPPORTS_128HZ
183 select SYS_SUPPORTS_256HZ
184 select SYS_SUPPORTS_1024HZ
186 This enables support for DEC's MIPS based workstations. For details
187 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
188 DECstation porting pages on <http://decstation.unix-ag.org/>.
190 If you have one of the following DECstation Models you definitely
191 want to choose R4xx0 for the CPU Type:
198 otherwise choose R3000.
201 bool "Jazz family of machines"
204 select ARCH_MAY_HAVE_PC_FDC
207 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
208 select GENERIC_ISA_DMA
209 select HAVE_PCSPKR_PLATFORM
214 select SYS_HAS_CPU_R4X00
215 select SYS_SUPPORTS_32BIT_KERNEL
216 select SYS_SUPPORTS_64BIT_KERNEL
217 select SYS_SUPPORTS_100HZ
219 This a family of machines based on the MIPS R4030 chipset which was
220 used by several vendors to build RISC/os and Windows NT workstations.
221 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
222 Olivetti M700-10 workstations.
225 bool "Ingenic JZ4740 based machines"
226 select SYS_HAS_CPU_MIPS32_R1
227 select SYS_SUPPORTS_32BIT_KERNEL
228 select SYS_SUPPORTS_LITTLE_ENDIAN
229 select SYS_SUPPORTS_ZBOOT_UART16550
230 select DMA_NONCOHERENT
232 select ARCH_REQUIRE_GPIOLIB
233 select SYS_HAS_EARLY_PRINTK
236 select GENERIC_IRQ_CHIP
239 bool "Lantiq based platforms"
240 select DMA_NONCOHERENT
244 select SYS_HAS_CPU_MIPS32_R1
245 select SYS_HAS_CPU_MIPS32_R2
246 select SYS_SUPPORTS_BIG_ENDIAN
247 select SYS_SUPPORTS_32BIT_KERNEL
248 select SYS_SUPPORTS_MULTITHREADING
249 select SYS_HAS_EARLY_PRINTK
250 select ARCH_REQUIRE_GPIOLIB
253 select HAVE_MACH_CLKDEV
257 select PINCTRL_LANTIQ
260 bool "LASAT Networks platforms"
263 select DMA_NONCOHERENT
264 select SYS_HAS_EARLY_PRINTK
267 select PCI_GT64XXX_PCI0
269 select R5000_CPU_SCACHE
270 select SYS_HAS_CPU_R5000
271 select SYS_SUPPORTS_32BIT_KERNEL
272 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
273 select SYS_SUPPORTS_LITTLE_ENDIAN
276 bool "Loongson family of machines"
277 select SYS_SUPPORTS_ZBOOT
279 This enables the support of Loongson family of machines.
281 Loongson is a family of general-purpose MIPS-compatible CPUs.
282 developed at Institute of Computing Technology (ICT),
283 Chinese Academy of Sciences (CAS) in the People's Republic
284 of China. The chief architect is Professor Weiwu Hu.
286 config MACH_LOONGSON1
287 bool "Loongson 1 family of machines"
288 select SYS_SUPPORTS_ZBOOT
290 This enables support for the Loongson 1 based machines.
292 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
293 the ICT (Institute of Computing Technology) and the Chinese Academy
297 bool "MIPS Malta board"
298 select ARCH_MAY_HAVE_PC_FDC
304 select DMA_MAYBE_COHERENT
305 select GENERIC_ISA_DMA
306 select HAVE_PCSPKR_PLATFORM
313 select MIPS_CPU_SCACHE
314 select PCI_GT64XXX_PCI0
317 select SYS_HAS_CPU_MIPS32_R1
318 select SYS_HAS_CPU_MIPS32_R2
319 select SYS_HAS_CPU_MIPS64_R1
320 select SYS_HAS_CPU_MIPS64_R2
321 select SYS_HAS_CPU_NEVADA
322 select SYS_HAS_CPU_RM7000
323 select SYS_SUPPORTS_32BIT_KERNEL
324 select SYS_SUPPORTS_64BIT_KERNEL
325 select SYS_SUPPORTS_BIG_ENDIAN
326 select SYS_SUPPORTS_LITTLE_ENDIAN
327 select SYS_SUPPORTS_MIPS_CMP
328 select SYS_SUPPORTS_MULTITHREADING
329 select SYS_SUPPORTS_SMARTMIPS
330 select SYS_SUPPORTS_ZBOOT
332 This enables support for the MIPS Technologies Malta evaluation
336 bool "MIPS SEAD3 board"
342 select CPU_MIPSR2_IRQ_VI
343 select CPU_MIPSR2_IRQ_EI
344 select DMA_NONCOHERENT
349 select SYS_HAS_CPU_MIPS32_R1
350 select SYS_HAS_CPU_MIPS32_R2
351 select SYS_HAS_CPU_MIPS64_R1
352 select SYS_HAS_EARLY_PRINTK
353 select SYS_SUPPORTS_32BIT_KERNEL
354 select SYS_SUPPORTS_64BIT_KERNEL
355 select SYS_SUPPORTS_BIG_ENDIAN
356 select SYS_SUPPORTS_LITTLE_ENDIAN
357 select SYS_SUPPORTS_SMARTMIPS
358 select SYS_SUPPORTS_MICROMIPS
359 select USB_ARCH_HAS_EHCI
360 select USB_EHCI_BIG_ENDIAN_DESC
361 select USB_EHCI_BIG_ENDIAN_MMIO
364 This enables support for the MIPS Technologies SEAD3 evaluation
368 bool "NEC EMMA2RH Mark-eins board"
372 This enables support for the NEC Electronics Mark-eins boards.
375 bool "NEC VR4100 series based machines"
378 select SYS_HAS_CPU_VR41XX
379 select ARCH_REQUIRE_GPIOLIB
382 bool "NXP STB220 board"
385 Support for NXP Semiconductors STB220 Development Board.
392 Support for NXP Semiconductors STB225 Development Board.
395 bool "PMC-Sierra MSP chipsets"
398 select DMA_NONCOHERENT
400 select NO_EXCEPT_FILL
402 select SYS_HAS_CPU_MIPS32_R1
403 select SYS_HAS_CPU_MIPS32_R2
404 select SYS_SUPPORTS_32BIT_KERNEL
405 select SYS_SUPPORTS_BIG_ENDIAN
408 select SERIAL_8250_CONSOLE
409 select USB_EHCI_BIG_ENDIAN_MMIO
410 select USB_EHCI_BIG_ENDIAN_DESC
412 This adds support for the PMC-Sierra family of Multi-Service
413 Processor System-On-A-Chips. These parts include a number
414 of integrated peripherals, interfaces and DSPs in addition to
415 a variety of MIPS cores.
418 bool "Ralink based machines"
422 select DMA_NONCOHERENT
425 select SYS_HAS_CPU_MIPS32_R1
426 select SYS_HAS_CPU_MIPS32_R2
427 select SYS_SUPPORTS_32BIT_KERNEL
428 select SYS_SUPPORTS_LITTLE_ENDIAN
429 select SYS_HAS_EARLY_PRINTK
430 select HAVE_MACH_CLKDEV
432 select ARCH_HAS_RESET_CONTROLLER
433 select RESET_CONTROLLER
436 bool "SGI IP22 (Indy/Indigo2)"
442 select DEFAULT_SGI_PARTITION
443 select DMA_NONCOHERENT
447 select IP22_CPU_SCACHE
449 select GENERIC_ISA_DMA_SUPPORT_BROKEN
451 select SGI_HAS_INDYDOG
457 select SYS_HAS_CPU_R4X00
458 select SYS_HAS_CPU_R5000
460 # Disable EARLY_PRINTK for now since it leads to overwritten prom
461 # memory during early boot on some machines.
463 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
464 # for a more details discussion
466 # select SYS_HAS_EARLY_PRINTK
467 select SYS_SUPPORTS_32BIT_KERNEL
468 select SYS_SUPPORTS_64BIT_KERNEL
469 select SYS_SUPPORTS_BIG_ENDIAN
471 This are the SGI Indy, Challenge S and Indigo2, as well as certain
472 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
473 that runs on these, say Y here.
476 bool "SGI IP27 (Origin200/2000)"
480 select DEFAULT_SGI_PARTITION
482 select SYS_HAS_EARLY_PRINTK
484 select NR_CPUS_DEFAULT_64
485 select SYS_HAS_CPU_R10000
486 select SYS_SUPPORTS_64BIT_KERNEL
487 select SYS_SUPPORTS_BIG_ENDIAN
488 select SYS_SUPPORTS_NUMA
489 select SYS_SUPPORTS_SMP
491 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
492 workstations. To compile a Linux kernel that runs on these, say Y
496 bool "SGI IP28 (Indigo2 R10k)"
502 select DEFAULT_SGI_PARTITION
503 select DMA_NONCOHERENT
504 select GENERIC_ISA_DMA_SUPPORT_BROKEN
510 select SGI_HAS_INDYDOG
516 select SYS_HAS_CPU_R10000
518 # Disable EARLY_PRINTK for now since it leads to overwritten prom
519 # memory during early boot on some machines.
521 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
522 # for a more details discussion
524 # select SYS_HAS_EARLY_PRINTK
525 select SYS_SUPPORTS_64BIT_KERNEL
526 select SYS_SUPPORTS_BIG_ENDIAN
528 This is the SGI Indigo2 with R10000 processor. To compile a Linux
529 kernel that runs on these, say Y here.
538 select DMA_NONCOHERENT
541 select R5000_CPU_SCACHE
542 select RM7000_CPU_SCACHE
543 select SYS_HAS_CPU_R5000
544 select SYS_HAS_CPU_R10000 if BROKEN
545 select SYS_HAS_CPU_RM7000
546 select SYS_HAS_CPU_NEVADA
547 select SYS_SUPPORTS_64BIT_KERNEL
548 select SYS_SUPPORTS_BIG_ENDIAN
550 If you want this kernel to run on SGI O2 workstation, say Y here.
553 bool "Sibyte BCM91120C-CRhine"
556 select SIBYTE_BCM1120
558 select SYS_HAS_CPU_SB1
559 select SYS_SUPPORTS_BIG_ENDIAN
560 select SYS_SUPPORTS_LITTLE_ENDIAN
563 bool "Sibyte BCM91120x-Carmel"
566 select SIBYTE_BCM1120
568 select SYS_HAS_CPU_SB1
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_LITTLE_ENDIAN
573 bool "Sibyte BCM91125C-CRhone"
576 select SIBYTE_BCM1125
578 select SYS_HAS_CPU_SB1
579 select SYS_SUPPORTS_BIG_ENDIAN
580 select SYS_SUPPORTS_HIGHMEM
581 select SYS_SUPPORTS_LITTLE_ENDIAN
584 bool "Sibyte BCM91125E-Rhone"
587 select SIBYTE_BCM1125H
589 select SYS_HAS_CPU_SB1
590 select SYS_SUPPORTS_BIG_ENDIAN
591 select SYS_SUPPORTS_LITTLE_ENDIAN
594 bool "Sibyte BCM91250A-SWARM"
597 select HAVE_PATA_PLATFORM
600 select SYS_HAS_CPU_SB1
601 select SYS_SUPPORTS_BIG_ENDIAN
602 select SYS_SUPPORTS_HIGHMEM
603 select SYS_SUPPORTS_LITTLE_ENDIAN
604 select ZONE_DMA32 if 64BIT
606 config SIBYTE_LITTLESUR
607 bool "Sibyte BCM91250C2-LittleSur"
610 select HAVE_PATA_PLATFORM
613 select SYS_HAS_CPU_SB1
614 select SYS_SUPPORTS_BIG_ENDIAN
615 select SYS_SUPPORTS_HIGHMEM
616 select SYS_SUPPORTS_LITTLE_ENDIAN
618 config SIBYTE_SENTOSA
619 bool "Sibyte BCM91250E-Sentosa"
624 select SYS_HAS_CPU_SB1
625 select SYS_SUPPORTS_BIG_ENDIAN
626 select SYS_SUPPORTS_LITTLE_ENDIAN
629 bool "Sibyte BCM91480B-BigSur"
632 select NR_CPUS_DEFAULT_4
633 select SIBYTE_BCM1x80
635 select SYS_HAS_CPU_SB1
636 select SYS_SUPPORTS_BIG_ENDIAN
637 select SYS_SUPPORTS_HIGHMEM
638 select SYS_SUPPORTS_LITTLE_ENDIAN
639 select ZONE_DMA32 if 64BIT
642 bool "SNI RM200/300/400"
643 select FW_ARC if CPU_LITTLE_ENDIAN
644 select FW_ARC32 if CPU_LITTLE_ENDIAN
645 select FW_SNIPROM if CPU_BIG_ENDIAN
646 select ARCH_MAY_HAVE_PC_FDC
650 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
651 select DMA_NONCOHERENT
652 select GENERIC_ISA_DMA
653 select HAVE_PCSPKR_PLATFORM
660 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
661 select SYS_HAS_CPU_R4X00
662 select SYS_HAS_CPU_R5000
663 select SYS_HAS_CPU_R10000
664 select R5000_CPU_SCACHE
665 select SYS_HAS_EARLY_PRINTK
666 select SYS_SUPPORTS_32BIT_KERNEL
667 select SYS_SUPPORTS_64BIT_KERNEL
668 select SYS_SUPPORTS_BIG_ENDIAN
669 select SYS_SUPPORTS_HIGHMEM
670 select SYS_SUPPORTS_LITTLE_ENDIAN
672 The SNI RM200/300/400 are MIPS-based machines manufactured by
673 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
674 Technology and now in turn merged with Fujitsu. Say Y here to
675 support this machine type.
678 bool "Toshiba TX39 series based machines"
681 bool "Toshiba TX49 series based machines"
683 config MIKROTIK_RB532
684 bool "Mikrotik RB532 boards"
687 select DMA_NONCOHERENT
690 select SYS_HAS_CPU_MIPS32_R1
691 select SYS_SUPPORTS_32BIT_KERNEL
692 select SYS_SUPPORTS_LITTLE_ENDIAN
695 select ARCH_REQUIRE_GPIOLIB
697 Support the Mikrotik(tm) RouterBoard 532 series,
698 based on the IDT RC32434 SoC.
700 config CAVIUM_OCTEON_SOC
701 bool "Cavium Networks Octeon SoC based boards"
703 select 64BIT_PHYS_ADDR
705 select SYS_SUPPORTS_64BIT_KERNEL
706 select SYS_SUPPORTS_BIG_ENDIAN
708 select SYS_SUPPORTS_HOTPLUG_CPU
709 select SYS_HAS_EARLY_PRINTK
710 select SYS_HAS_CPU_CAVIUM_OCTEON
714 select USB_ARCH_HAS_OHCI
715 select USB_ARCH_HAS_EHCI
717 select ARCH_REQUIRE_GPIOLIB
719 This option supports all of the Octeon reference boards from Cavium
720 Networks. It builds a kernel that dynamically determines the Octeon
721 CPU type and supports all known board reference implementations.
722 Some of the supported boards are:
729 Say Y here for most Octeon reference boards.
732 bool "Netlogic XLR/XLS based systems"
735 select SYS_HAS_CPU_XLR
736 select SYS_SUPPORTS_SMP
739 select SYS_SUPPORTS_32BIT_KERNEL
740 select SYS_SUPPORTS_64BIT_KERNEL
741 select 64BIT_PHYS_ADDR
742 select SYS_SUPPORTS_BIG_ENDIAN
743 select SYS_SUPPORTS_HIGHMEM
745 select NR_CPUS_DEFAULT_32
749 select ZONE_DMA32 if 64BIT
751 select SYS_HAS_EARLY_PRINTK
752 select USB_ARCH_HAS_OHCI if USB_SUPPORT
753 select USB_ARCH_HAS_EHCI if USB_SUPPORT
754 select SYS_SUPPORTS_ZBOOT
755 select SYS_SUPPORTS_ZBOOT_UART16550
757 Support for systems based on Netlogic XLR and XLS processors.
758 Say Y here if you have a XLR or XLS based board.
761 bool "Netlogic XLP based systems"
764 select SYS_HAS_CPU_XLP
765 select SYS_SUPPORTS_SMP
767 select SYS_SUPPORTS_32BIT_KERNEL
768 select SYS_SUPPORTS_64BIT_KERNEL
769 select 64BIT_PHYS_ADDR
770 select SYS_SUPPORTS_BIG_ENDIAN
771 select SYS_SUPPORTS_LITTLE_ENDIAN
772 select SYS_SUPPORTS_HIGHMEM
774 select NR_CPUS_DEFAULT_32
778 select ARCH_SUPPORTS_MSI
779 select ZONE_DMA32 if 64BIT
781 select SYS_HAS_EARLY_PRINTK
783 select SYS_SUPPORTS_ZBOOT
784 select SYS_SUPPORTS_ZBOOT_UART16550
786 This board is based on Netlogic XLP Processor.
787 Say Y here if you have a XLP based board.
791 source "arch/mips/alchemy/Kconfig"
792 source "arch/mips/ath79/Kconfig"
793 source "arch/mips/bcm47xx/Kconfig"
794 source "arch/mips/bcm63xx/Kconfig"
795 source "arch/mips/jazz/Kconfig"
796 source "arch/mips/jz4740/Kconfig"
797 source "arch/mips/lantiq/Kconfig"
798 source "arch/mips/lasat/Kconfig"
799 source "arch/mips/pmcs-msp71xx/Kconfig"
800 source "arch/mips/ralink/Kconfig"
801 source "arch/mips/sgi-ip27/Kconfig"
802 source "arch/mips/sibyte/Kconfig"
803 source "arch/mips/txx9/Kconfig"
804 source "arch/mips/vr41xx/Kconfig"
805 source "arch/mips/cavium-octeon/Kconfig"
806 source "arch/mips/loongson/Kconfig"
807 source "arch/mips/loongson1/Kconfig"
808 source "arch/mips/netlogic/Kconfig"
812 config RWSEM_GENERIC_SPINLOCK
816 config RWSEM_XCHGADD_ALGORITHM
819 config ARCH_HAS_ILOG2_U32
823 config ARCH_HAS_ILOG2_U64
827 config GENERIC_HWEIGHT
831 config GENERIC_CALIBRATE_DELAY
835 config SCHED_OMIT_FRAME_POINTER
840 # Select some configuration options automatically based on user selections.
845 config ARCH_MAY_HAVE_PC_FDC
888 select ARCH_REQUIRE_GPIOLIB
894 config ARCH_DMA_ADDR_T_64BIT
895 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
897 config DMA_MAYBE_COHERENT
898 select DMA_NONCOHERENT
904 config DMA_NONCOHERENT
906 select NEED_DMA_MAP_STATE
908 config NEED_DMA_MAP_STATE
911 config SYS_HAS_EARLY_PRINTK
915 bool "Support for hot-pluggable CPUs"
916 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
918 Say Y here to allow turning CPUs off and on. CPUs can be
919 controlled through /sys/devices/system/cpu.
920 (Note: power management support will enable this option
921 automatically on SMP systems. )
922 Say N if you want to disable CPU hotplug.
924 config SYS_SUPPORTS_HOTPLUG_CPU
948 config GENERIC_ISA_DMA
950 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
953 config GENERIC_ISA_DMA_SUPPORT_BROKEN
955 select GENERIC_ISA_DMA
964 # Endianness selection. Sufficiently obscure so many users don't know what to
965 # answer,so we try hard to limit the available choices. Also the use of a
966 # choice statement should be more obvious to the user.
969 prompt "Endianness selection"
971 Some MIPS machines can be configured for either little or big endian
972 byte order. These modes require different kernels and a different
973 Linux distribution. In general there is one preferred byteorder for a
974 particular system but some systems are just as commonly used in the
975 one or the other endianness.
977 config CPU_BIG_ENDIAN
979 depends on SYS_SUPPORTS_BIG_ENDIAN
981 config CPU_LITTLE_ENDIAN
983 depends on SYS_SUPPORTS_LITTLE_ENDIAN
990 config SYS_SUPPORTS_APM_EMULATION
993 config SYS_SUPPORTS_BIG_ENDIAN
996 config SYS_SUPPORTS_LITTLE_ENDIAN
999 config SYS_SUPPORTS_HUGETLBFS
1001 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1004 config MIPS_HUGE_TLB_SUPPORT
1005 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1028 config PCI_GT64XXX_PCI0
1031 config NO_EXCEPT_FILL
1038 select DMA_NONCOHERENT
1040 select SWAP_IO_SPACE
1041 select SYS_HAS_CPU_R5500
1042 select SYS_SUPPORTS_32BIT_KERNEL
1043 select SYS_SUPPORTS_64BIT_KERNEL
1044 select SYS_SUPPORTS_BIG_ENDIAN
1051 select DMA_NONCOHERENT
1052 select SYS_HAS_CPU_MIPS32_R2
1053 select SYS_SUPPORTS_32BIT_KERNEL
1054 select SYS_SUPPORTS_LITTLE_ENDIAN
1055 select SYS_SUPPORTS_BIG_ENDIAN
1056 select CPU_MIPSR2_IRQ_VI
1062 config SWAP_IO_SPACE
1065 config SGI_HAS_INDYDOG
1077 config SGI_HAS_ZILOG
1080 config SGI_HAS_I8042
1083 config DEFAULT_SGI_PARTITION
1095 config MIPS_L1_CACHE_SHIFT
1097 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1098 default "6" if MIPS_CPU_SCACHE
1099 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1102 config HAVE_STD_PC_SERIAL_PORT
1106 bool "ARC console support"
1107 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1111 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1116 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1125 menu "CPU selection"
1131 config CPU_LOONGSON2E
1133 depends on SYS_HAS_CPU_LOONGSON2E
1134 select CPU_LOONGSON2
1136 The Loongson 2E processor implements the MIPS III instruction set
1137 with many extensions.
1139 It has an internal FPGA northbridge, which is compatible to
1142 config CPU_LOONGSON2F
1144 depends on SYS_HAS_CPU_LOONGSON2F
1145 select CPU_LOONGSON2
1146 select ARCH_REQUIRE_GPIOLIB
1148 The Loongson 2F processor implements the MIPS III instruction set
1149 with many extensions.
1151 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1152 have a similar programming interface with FPGA northbridge used in
1155 config CPU_LOONGSON1B
1157 depends on SYS_HAS_CPU_LOONGSON1B
1158 select CPU_LOONGSON1
1160 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1161 release 2 instruction set.
1163 config CPU_MIPS32_R1
1164 bool "MIPS32 Release 1"
1165 depends on SYS_HAS_CPU_MIPS32_R1
1166 select CPU_HAS_PREFETCH
1167 select CPU_SUPPORTS_32BIT_KERNEL
1168 select CPU_SUPPORTS_HIGHMEM
1170 Choose this option to build a kernel for release 1 or later of the
1171 MIPS32 architecture. Most modern embedded systems with a 32-bit
1172 MIPS processor are based on a MIPS32 processor. If you know the
1173 specific type of processor in your system, choose those that one
1174 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1175 Release 2 of the MIPS32 architecture is available since several
1176 years so chances are you even have a MIPS32 Release 2 processor
1177 in which case you should choose CPU_MIPS32_R2 instead for better
1180 config CPU_MIPS32_R2
1181 bool "MIPS32 Release 2"
1182 depends on SYS_HAS_CPU_MIPS32_R2
1183 select CPU_HAS_PREFETCH
1184 select CPU_SUPPORTS_32BIT_KERNEL
1185 select CPU_SUPPORTS_HIGHMEM
1188 Choose this option to build a kernel for release 2 or later of the
1189 MIPS32 architecture. Most modern embedded systems with a 32-bit
1190 MIPS processor are based on a MIPS32 processor. If you know the
1191 specific type of processor in your system, choose those that one
1192 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1194 config CPU_MIPS64_R1
1195 bool "MIPS64 Release 1"
1196 depends on SYS_HAS_CPU_MIPS64_R1
1197 select CPU_HAS_PREFETCH
1198 select CPU_SUPPORTS_32BIT_KERNEL
1199 select CPU_SUPPORTS_64BIT_KERNEL
1200 select CPU_SUPPORTS_HIGHMEM
1201 select CPU_SUPPORTS_HUGEPAGES
1203 Choose this option to build a kernel for release 1 or later of the
1204 MIPS64 architecture. Many modern embedded systems with a 64-bit
1205 MIPS processor are based on a MIPS64 processor. If you know the
1206 specific type of processor in your system, choose those that one
1207 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1208 Release 2 of the MIPS64 architecture is available since several
1209 years so chances are you even have a MIPS64 Release 2 processor
1210 in which case you should choose CPU_MIPS64_R2 instead for better
1213 config CPU_MIPS64_R2
1214 bool "MIPS64 Release 2"
1215 depends on SYS_HAS_CPU_MIPS64_R2
1216 select CPU_HAS_PREFETCH
1217 select CPU_SUPPORTS_32BIT_KERNEL
1218 select CPU_SUPPORTS_64BIT_KERNEL
1219 select CPU_SUPPORTS_HIGHMEM
1220 select CPU_SUPPORTS_HUGEPAGES
1222 Choose this option to build a kernel for release 2 or later of the
1223 MIPS64 architecture. Many modern embedded systems with a 64-bit
1224 MIPS processor are based on a MIPS64 processor. If you know the
1225 specific type of processor in your system, choose those that one
1226 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1230 depends on SYS_HAS_CPU_R3000
1232 select CPU_SUPPORTS_32BIT_KERNEL
1233 select CPU_SUPPORTS_HIGHMEM
1235 Please make sure to pick the right CPU type. Linux/MIPS is not
1236 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1237 *not* work on R4000 machines and vice versa. However, since most
1238 of the supported machines have an R4000 (or similar) CPU, R4x00
1239 might be a safe bet. If the resulting kernel does not work,
1240 try to recompile with R3000.
1244 depends on SYS_HAS_CPU_TX39XX
1245 select CPU_SUPPORTS_32BIT_KERNEL
1249 depends on SYS_HAS_CPU_VR41XX
1250 select CPU_SUPPORTS_32BIT_KERNEL
1251 select CPU_SUPPORTS_64BIT_KERNEL
1253 The options selects support for the NEC VR4100 series of processors.
1254 Only choose this option if you have one of these processors as a
1255 kernel built with this option will not run on any other type of
1256 processor or vice versa.
1260 depends on SYS_HAS_CPU_R4300
1261 select CPU_SUPPORTS_32BIT_KERNEL
1262 select CPU_SUPPORTS_64BIT_KERNEL
1264 MIPS Technologies R4300-series processors.
1268 depends on SYS_HAS_CPU_R4X00
1269 select CPU_SUPPORTS_32BIT_KERNEL
1270 select CPU_SUPPORTS_64BIT_KERNEL
1271 select CPU_SUPPORTS_HUGEPAGES
1273 MIPS Technologies R4000-series processors other than 4300, including
1274 the R4000, R4400, R4600, and 4700.
1278 depends on SYS_HAS_CPU_TX49XX
1279 select CPU_HAS_PREFETCH
1280 select CPU_SUPPORTS_32BIT_KERNEL
1281 select CPU_SUPPORTS_64BIT_KERNEL
1282 select CPU_SUPPORTS_HUGEPAGES
1286 depends on SYS_HAS_CPU_R5000
1287 select CPU_SUPPORTS_32BIT_KERNEL
1288 select CPU_SUPPORTS_64BIT_KERNEL
1289 select CPU_SUPPORTS_HUGEPAGES
1291 MIPS Technologies R5000-series processors other than the Nevada.
1295 depends on SYS_HAS_CPU_R5432
1296 select CPU_SUPPORTS_32BIT_KERNEL
1297 select CPU_SUPPORTS_64BIT_KERNEL
1298 select CPU_SUPPORTS_HUGEPAGES
1302 depends on SYS_HAS_CPU_R5500
1303 select CPU_SUPPORTS_32BIT_KERNEL
1304 select CPU_SUPPORTS_64BIT_KERNEL
1305 select CPU_SUPPORTS_HUGEPAGES
1307 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1312 depends on SYS_HAS_CPU_R6000
1313 select CPU_SUPPORTS_32BIT_KERNEL
1315 MIPS Technologies R6000 and R6000A series processors. Note these
1316 processors are extremely rare and the support for them is incomplete.
1320 depends on SYS_HAS_CPU_NEVADA
1321 select CPU_SUPPORTS_32BIT_KERNEL
1322 select CPU_SUPPORTS_64BIT_KERNEL
1323 select CPU_SUPPORTS_HUGEPAGES
1325 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1329 depends on SYS_HAS_CPU_R8000
1330 select CPU_HAS_PREFETCH
1331 select CPU_SUPPORTS_64BIT_KERNEL
1333 MIPS Technologies R8000 processors. Note these processors are
1334 uncommon and the support for them is incomplete.
1338 depends on SYS_HAS_CPU_R10000
1339 select CPU_HAS_PREFETCH
1340 select CPU_SUPPORTS_32BIT_KERNEL
1341 select CPU_SUPPORTS_64BIT_KERNEL
1342 select CPU_SUPPORTS_HIGHMEM
1343 select CPU_SUPPORTS_HUGEPAGES
1345 MIPS Technologies R10000-series processors.
1349 depends on SYS_HAS_CPU_RM7000
1350 select CPU_HAS_PREFETCH
1351 select CPU_SUPPORTS_32BIT_KERNEL
1352 select CPU_SUPPORTS_64BIT_KERNEL
1353 select CPU_SUPPORTS_HIGHMEM
1354 select CPU_SUPPORTS_HUGEPAGES
1358 depends on SYS_HAS_CPU_SB1
1359 select CPU_SUPPORTS_32BIT_KERNEL
1360 select CPU_SUPPORTS_64BIT_KERNEL
1361 select CPU_SUPPORTS_HIGHMEM
1362 select CPU_SUPPORTS_HUGEPAGES
1363 select WEAK_ORDERING
1365 config CPU_CAVIUM_OCTEON
1366 bool "Cavium Octeon processor"
1367 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1368 select ARCH_SPARSEMEM_ENABLE
1369 select CPU_HAS_PREFETCH
1370 select CPU_SUPPORTS_64BIT_KERNEL
1371 select SYS_SUPPORTS_SMP
1372 select NR_CPUS_DEFAULT_16
1373 select WEAK_ORDERING
1374 select CPU_SUPPORTS_HIGHMEM
1375 select CPU_SUPPORTS_HUGEPAGES
1378 select USB_EHCI_BIG_ENDIAN_MMIO
1380 The Cavium Octeon processor is a highly integrated chip containing
1381 many ethernet hardware widgets for networking tasks. The processor
1382 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1383 Full details can be found at http://www.caviumnetworks.com.
1386 bool "Broadcom BMIPS"
1387 depends on SYS_HAS_CPU_BMIPS
1389 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1390 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1391 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1392 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1393 select CPU_SUPPORTS_32BIT_KERNEL
1394 select DMA_NONCOHERENT
1396 select SWAP_IO_SPACE
1397 select WEAK_ORDERING
1398 select CPU_SUPPORTS_HIGHMEM
1399 select CPU_HAS_PREFETCH
1401 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1404 bool "Netlogic XLR SoC"
1405 depends on SYS_HAS_CPU_XLR
1406 select CPU_SUPPORTS_32BIT_KERNEL
1407 select CPU_SUPPORTS_64BIT_KERNEL
1408 select CPU_SUPPORTS_HIGHMEM
1409 select CPU_SUPPORTS_HUGEPAGES
1410 select WEAK_ORDERING
1411 select WEAK_REORDERING_BEYOND_LLSC
1413 Netlogic Microsystems XLR/XLS processors.
1416 bool "Netlogic XLP SoC"
1417 depends on SYS_HAS_CPU_XLP
1418 select CPU_SUPPORTS_32BIT_KERNEL
1419 select CPU_SUPPORTS_64BIT_KERNEL
1420 select CPU_SUPPORTS_HIGHMEM
1421 select WEAK_ORDERING
1422 select WEAK_REORDERING_BEYOND_LLSC
1423 select CPU_HAS_PREFETCH
1426 Netlogic Microsystems XLP processors.
1430 config CPU_NOP_WORKAROUNDS
1433 config CPU_JUMP_WORKAROUNDS
1436 config CPU_LOONGSON2F_WORKAROUNDS
1437 bool "Loongson 2F Workarounds"
1439 select CPU_NOP_WORKAROUNDS
1440 select CPU_JUMP_WORKAROUNDS
1442 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1443 require workarounds. Without workarounds the system may hang
1444 unexpectedly. For more information please refer to the gas
1445 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1447 Loongson 2F03 and later have fixed these issues and no workarounds
1448 are needed. The workarounds have no significant side effect on them
1449 but may decrease the performance of the system so this option should
1450 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1453 If unsure, please say Y.
1454 endif # CPU_LOONGSON2F
1456 config SYS_SUPPORTS_ZBOOT
1458 select HAVE_KERNEL_GZIP
1459 select HAVE_KERNEL_BZIP2
1460 select HAVE_KERNEL_LZ4
1461 select HAVE_KERNEL_LZMA
1462 select HAVE_KERNEL_LZO
1463 select HAVE_KERNEL_XZ
1465 config SYS_SUPPORTS_ZBOOT_UART16550
1467 select SYS_SUPPORTS_ZBOOT
1469 config CPU_LOONGSON2
1471 select CPU_SUPPORTS_32BIT_KERNEL
1472 select CPU_SUPPORTS_64BIT_KERNEL
1473 select CPU_SUPPORTS_HIGHMEM
1474 select CPU_SUPPORTS_HUGEPAGES
1476 config CPU_LOONGSON1
1480 select CPU_HAS_PREFETCH
1481 select CPU_SUPPORTS_32BIT_KERNEL
1482 select CPU_SUPPORTS_HIGHMEM
1484 config CPU_BMIPS32_3300
1485 select SMP_UP if SMP
1488 config CPU_BMIPS4350
1490 select SYS_SUPPORTS_SMP
1491 select SYS_SUPPORTS_HOTPLUG_CPU
1493 config CPU_BMIPS4380
1495 select SYS_SUPPORTS_SMP
1496 select SYS_SUPPORTS_HOTPLUG_CPU
1498 config CPU_BMIPS5000
1500 select MIPS_CPU_SCACHE
1501 select SYS_SUPPORTS_SMP
1502 select SYS_SUPPORTS_HOTPLUG_CPU
1504 config SYS_HAS_CPU_LOONGSON2E
1507 config SYS_HAS_CPU_LOONGSON2F
1509 select CPU_SUPPORTS_CPUFREQ
1510 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1511 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1513 config SYS_HAS_CPU_LOONGSON1B
1516 config SYS_HAS_CPU_MIPS32_R1
1519 config SYS_HAS_CPU_MIPS32_R2
1522 config SYS_HAS_CPU_MIPS64_R1
1525 config SYS_HAS_CPU_MIPS64_R2
1528 config SYS_HAS_CPU_R3000
1531 config SYS_HAS_CPU_TX39XX
1534 config SYS_HAS_CPU_VR41XX
1537 config SYS_HAS_CPU_R4300
1540 config SYS_HAS_CPU_R4X00
1543 config SYS_HAS_CPU_TX49XX
1546 config SYS_HAS_CPU_R5000
1549 config SYS_HAS_CPU_R5432
1552 config SYS_HAS_CPU_R5500
1555 config SYS_HAS_CPU_R6000
1558 config SYS_HAS_CPU_NEVADA
1561 config SYS_HAS_CPU_R8000
1564 config SYS_HAS_CPU_R10000
1567 config SYS_HAS_CPU_RM7000
1570 config SYS_HAS_CPU_SB1
1573 config SYS_HAS_CPU_CAVIUM_OCTEON
1576 config SYS_HAS_CPU_BMIPS
1579 config SYS_HAS_CPU_BMIPS32_3300
1581 select SYS_HAS_CPU_BMIPS
1583 config SYS_HAS_CPU_BMIPS4350
1585 select SYS_HAS_CPU_BMIPS
1587 config SYS_HAS_CPU_BMIPS4380
1589 select SYS_HAS_CPU_BMIPS
1591 config SYS_HAS_CPU_BMIPS5000
1593 select SYS_HAS_CPU_BMIPS
1595 config SYS_HAS_CPU_XLR
1598 config SYS_HAS_CPU_XLP
1602 # CPU may reorder R->R, R->W, W->R, W->W
1603 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1605 config WEAK_ORDERING
1609 # CPU may reorder reads and writes beyond LL/SC
1610 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1612 config WEAK_REORDERING_BEYOND_LLSC
1617 # These two indicate any level of the MIPS32 and MIPS64 architecture
1621 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1625 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1628 # These two indicate the revision of the architecture, either Release 1 or Release 2
1632 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1636 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1638 config SYS_SUPPORTS_32BIT_KERNEL
1640 config SYS_SUPPORTS_64BIT_KERNEL
1642 config CPU_SUPPORTS_32BIT_KERNEL
1644 config CPU_SUPPORTS_64BIT_KERNEL
1646 config CPU_SUPPORTS_CPUFREQ
1648 config CPU_SUPPORTS_ADDRWINCFG
1650 config CPU_SUPPORTS_HUGEPAGES
1652 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1654 config MIPS_PGD_C0_CONTEXT
1656 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1659 # Set to y for ptrace access to watch registers.
1661 config HARDWARE_WATCHPOINTS
1663 default y if CPU_MIPSR1 || CPU_MIPSR2
1668 prompt "Kernel code model"
1670 You should only select this option if you have a workload that
1671 actually benefits from 64-bit processing or if your machine has
1672 large memory. You will only be presented a single option in this
1673 menu if your system does not support both 32-bit and 64-bit kernels.
1676 bool "32-bit kernel"
1677 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1680 Select this option if you want to build a 32-bit kernel.
1682 bool "64-bit kernel"
1683 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1685 Select this option if you want to build a 64-bit kernel.
1690 bool "KVM Guest Kernel"
1691 depends on BROKEN_ON_SMP
1693 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1695 config KVM_HOST_FREQ
1696 int "KVM Host Processor Frequency (MHz)"
1697 depends on KVM_GUEST
1700 Select this option if building a guest kernel for KVM to skip
1701 RTC emulation when determining guest CPU Frequency. Instead, the guest
1702 processor frequency is automatically derived from the host frequency.
1705 prompt "Kernel page size"
1706 default PAGE_SIZE_4KB
1708 config PAGE_SIZE_4KB
1710 depends on !CPU_LOONGSON2
1712 This option select the standard 4kB Linux page size. On some
1713 R3000-family processors this is the only available page size. Using
1714 4kB page size will minimize memory consumption and is therefore
1715 recommended for low memory systems.
1717 config PAGE_SIZE_8KB
1719 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1721 Using 8kB page size will result in higher performance kernel at
1722 the price of higher memory consumption. This option is available
1723 only on R8000 and cnMIPS processors. Note that you will need a
1724 suitable Linux distribution to support this.
1726 config PAGE_SIZE_16KB
1728 depends on !CPU_R3000 && !CPU_TX39XX
1730 Using 16kB page size will result in higher performance kernel at
1731 the price of higher memory consumption. This option is available on
1732 all non-R3000 family processors. Note that you will need a suitable
1733 Linux distribution to support this.
1735 config PAGE_SIZE_32KB
1737 depends on CPU_CAVIUM_OCTEON
1739 Using 32kB page size will result in higher performance kernel at
1740 the price of higher memory consumption. This option is available
1741 only on cnMIPS cores. Note that you will need a suitable Linux
1742 distribution to support this.
1744 config PAGE_SIZE_64KB
1746 depends on !CPU_R3000 && !CPU_TX39XX
1748 Using 64kB page size will result in higher performance kernel at
1749 the price of higher memory consumption. This option is available on
1750 all non-R3000 family processor. Not that at the time of this
1751 writing this option is still high experimental.
1755 config FORCE_MAX_ZONEORDER
1756 int "Maximum zone order"
1757 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1758 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1759 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1760 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1761 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1762 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1766 The kernel memory allocator divides physically contiguous memory
1767 blocks into "zones", where each zone is a power of two number of
1768 pages. This option selects the largest power of two that the kernel
1769 keeps in the memory allocator. If you need to allocate very large
1770 blocks of physically contiguous memory, then you may need to
1771 increase this value.
1773 This config option is actually maximum order plus one. For example,
1774 a value of 11 means that the largest free memory block is 2^10 pages.
1776 The page size is not necessarily 4KB. Keep this in mind
1777 when choosing a value for this option.
1780 bool "Use GIC global counter for clock events"
1781 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1783 Use the GIC global counter for the clock events. The R4K clock
1784 event driver is always present, so if the platform ends up not
1785 detecting a GIC, it will fall back to the R4K timer for the
1786 generation of clock events.
1791 config IP22_CPU_SCACHE
1796 # Support for a MIPS32 / MIPS64 style S-caches
1798 config MIPS_CPU_SCACHE
1802 config R5000_CPU_SCACHE
1806 config RM7000_CPU_SCACHE
1810 config SIBYTE_DMA_PAGEOPS
1811 bool "Use DMA to clear/copy pages"
1814 Instead of using the CPU to zero and copy pages, use a Data Mover
1815 channel. These DMA channels are otherwise unused by the standard
1816 SiByte Linux port. Seems to give a small performance benefit.
1818 config CPU_HAS_PREFETCH
1821 config CPU_GENERIC_DUMP_TLB
1823 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1827 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1829 config CPU_R4K_CACHE_TLB
1831 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1834 prompt "MIPS MT options"
1836 config MIPS_MT_DISABLED
1837 bool "Disable multithreading support"
1839 Use this option if your platform does not support the MT ASE
1840 which is hardware multithreading support. On systems without
1841 an MT-enabled processor, this will be the only option that is
1842 available in this menu.
1845 bool "Use 1 TC on each available VPE for SMP"
1846 depends on SYS_SUPPORTS_MULTITHREADING
1847 select CPU_MIPSR2_IRQ_VI
1848 select CPU_MIPSR2_IRQ_EI
1853 select SYS_SUPPORTS_SMP
1854 select SYS_SUPPORTS_SCHED_SMT
1855 select MIPS_PERF_SHARED_TC_COUNTERS
1857 This is a kernel model which is known as SMVP. This is supported
1858 on cores with the MT ASE and uses the available VPEs to implement
1859 virtual processors which supports SMP. This is equivalent to the
1860 Intel Hyperthreading feature. For further information go to
1861 <http://www.imgtec.com/mips/mips-multithreading.asp>.
1864 bool "Use all TCs on all VPEs for SMP (DEPRECATED)"
1865 depends on CPU_MIPS32_R2
1866 depends on SYS_SUPPORTS_MULTITHREADING
1867 select CPU_MIPSR2_IRQ_VI
1868 select CPU_MIPSR2_IRQ_EI
1872 select SYS_SUPPORTS_SMP
1873 select NR_CPUS_DEFAULT_8
1875 This is a kernel model which is known as SMTC. This is
1876 supported on cores with the MT ASE and presents all TCs
1877 available on all VPEs to support SMP. For further
1878 information see <http://www.linux-mips.org/wiki/34K#SMTC>.
1886 bool "SMT (multithreading) scheduler support"
1887 depends on SYS_SUPPORTS_SCHED_SMT
1890 SMT scheduler support improves the CPU scheduler's decision making
1891 when dealing with MIPS MT enabled cores at a cost of slightly
1892 increased overhead in some places. If unsure say N here.
1894 config SYS_SUPPORTS_SCHED_SMT
1897 config SYS_SUPPORTS_MULTITHREADING
1900 config MIPS_MT_FPAFF
1901 bool "Dynamic FPU affinity for FP-intensive threads"
1903 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1905 config MIPS_VPE_LOADER
1906 bool "VPE loader support."
1907 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1908 select CPU_MIPSR2_IRQ_VI
1909 select CPU_MIPSR2_IRQ_EI
1912 Includes a loader for loading an elf relocatable object
1913 onto another VPE and running it.
1915 config MIPS_VPE_LOADER_CMP
1918 depends on MIPS_VPE_LOADER && MIPS_CMP
1920 config MIPS_VPE_LOADER_MT
1923 depends on MIPS_VPE_LOADER && !MIPS_CMP
1925 config MIPS_MT_SMTC_IM_BACKSTOP
1926 bool "Use per-TC register bits as backstop for inhibited IM bits"
1927 depends on MIPS_MT_SMTC
1930 To support multiple TC microthreads acting as "CPUs" within
1931 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1932 during interrupt handling. To support legacy drivers and interrupt
1933 controller management code, SMTC has a "backstop" to track and
1934 if necessary restore the interrupt mask. This has some performance
1935 impact on interrupt service overhead.
1937 config MIPS_MT_SMTC_IRQAFF
1938 bool "Support IRQ affinity API"
1939 depends on MIPS_MT_SMTC
1942 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1943 for SMTC Linux kernel. Requires platform support, of which
1944 an example can be found in the MIPS kernel i8259 and Malta
1945 platform code. Adds some overhead to interrupt dispatch, and
1946 should be used only if you know what you are doing.
1948 config MIPS_VPE_LOADER_TOM
1949 bool "Load VPE program into memory hidden from linux"
1950 depends on MIPS_VPE_LOADER
1953 The loader can use memory that is present but has been hidden from
1954 Linux using the kernel command line option "mem=xxMB". It's up to
1955 you to ensure the amount you put in the option and the space your
1956 program requires is less or equal to the amount physically present.
1958 config MIPS_VPE_APSP_API
1959 bool "Enable support for AP/SP API (RTLX)"
1960 depends on MIPS_VPE_LOADER
1963 config MIPS_VPE_APSP_API_CMP
1966 depends on MIPS_VPE_APSP_API && MIPS_CMP
1968 config MIPS_VPE_APSP_API_MT
1971 depends on MIPS_VPE_APSP_API && !MIPS_CMP
1974 bool "MIPS CMP support"
1975 depends on SYS_SUPPORTS_MIPS_CMP && MIPS_MT_SMP
1977 select WEAK_ORDERING
1980 Enable Coherency Manager processor (CMP) support.
1982 config SB1_PASS_1_WORKAROUNDS
1984 depends on CPU_SB1_PASS_1
1987 config SB1_PASS_2_WORKAROUNDS
1989 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1992 config SB1_PASS_2_1_WORKAROUNDS
1994 depends on CPU_SB1 && CPU_SB1_PASS_2
1998 config 64BIT_PHYS_ADDR
2001 config ARCH_PHYS_ADDR_T_64BIT
2002 def_bool 64BIT_PHYS_ADDR
2004 config CPU_HAS_SMARTMIPS
2005 depends on SYS_SUPPORTS_SMARTMIPS
2006 bool "Support for the SmartMIPS ASE"
2008 SmartMIPS is a extension of the MIPS32 architecture aimed at
2009 increased security at both hardware and software level for
2010 smartcards. Enabling this option will allow proper use of the
2011 SmartMIPS instructions by Linux applications. However a kernel with
2012 this option will not work on a MIPS core without SmartMIPS core. If
2013 you don't know you probably don't have SmartMIPS and should say N
2016 config CPU_MICROMIPS
2017 depends on SYS_SUPPORTS_MICROMIPS
2018 bool "Build kernel using microMIPS ISA"
2020 When this option is enabled the kernel will be built using the
2030 # Vectored interrupt mode is an R2 feature
2032 config CPU_MIPSR2_IRQ_VI
2036 # Extended interrupt mode is an R2 feature
2038 config CPU_MIPSR2_IRQ_EI
2043 depends on !CPU_R3000
2049 config CPU_DADDI_WORKAROUNDS
2052 config CPU_R4000_WORKAROUNDS
2054 select CPU_R4400_WORKAROUNDS
2056 config CPU_R4400_WORKAROUNDS
2060 # - Highmem only makes sense for the 32-bit kernel.
2061 # - The current highmem code will only work properly on physically indexed
2062 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2063 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2064 # moment we protect the user and offer the highmem option only on machines
2065 # where it's known to be safe. This will not offer highmem on a few systems
2066 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2067 # indexed CPUs but we're playing safe.
2068 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2069 # know they might have memory configurations that could make use of highmem
2073 bool "High Memory Support"
2074 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2076 config CPU_SUPPORTS_HIGHMEM
2079 config SYS_SUPPORTS_HIGHMEM
2082 config SYS_SUPPORTS_SMARTMIPS
2085 config SYS_SUPPORTS_MICROMIPS
2088 config ARCH_FLATMEM_ENABLE
2090 depends on !NUMA && !CPU_LOONGSON2
2092 config ARCH_DISCONTIGMEM_ENABLE
2094 default y if SGI_IP27
2096 Say Y to support efficient handling of discontiguous physical memory,
2097 for architectures which are either NUMA (Non-Uniform Memory Access)
2098 or have huge holes in the physical address space for other reasons.
2099 See <file:Documentation/vm/numa> for more.
2101 config ARCH_SPARSEMEM_ENABLE
2103 select SPARSEMEM_STATIC
2107 depends on SYS_SUPPORTS_NUMA
2109 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2110 Access). This option improves performance on systems with more
2111 than two nodes; on two node systems it is generally better to
2112 leave it disabled; on single node systems disable this option
2115 config SYS_SUPPORTS_NUMA
2121 depends on NEED_MULTIPLE_NODES
2123 config HW_PERF_EVENTS
2124 bool "Enable hardware performance counter support for perf events"
2125 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2128 Enable hardware performance counter support for perf events. If
2129 disabled, perf events will use software events only.
2134 bool "Multi-Processing support"
2135 depends on SYS_SUPPORTS_SMP
2137 This enables support for systems with more than one CPU. If you have
2138 a system with only one CPU, like most personal computers, say N. If
2139 you have a system with more than one CPU, say Y.
2141 If you say N here, the kernel will run on single and multiprocessor
2142 machines, but will use only one CPU of a multiprocessor machine. If
2143 you say Y here, the kernel will run on many, but not all,
2144 singleprocessor machines. On a singleprocessor machine, the kernel
2145 will run faster if you say N here.
2147 People using multiprocessor machines who say Y here should also say
2148 Y to "Enhanced Real Time Clock Support", below.
2150 See also the SMP-HOWTO available at
2151 <http://www.tldp.org/docs.html#howto>.
2153 If you don't know what to do here, say N.
2158 config SYS_SUPPORTS_MIPS_CMP
2161 config SYS_SUPPORTS_SMP
2164 config NR_CPUS_DEFAULT_4
2167 config NR_CPUS_DEFAULT_8
2170 config NR_CPUS_DEFAULT_16
2173 config NR_CPUS_DEFAULT_32
2176 config NR_CPUS_DEFAULT_64
2180 int "Maximum number of CPUs (2-64)"
2183 default "4" if NR_CPUS_DEFAULT_4
2184 default "8" if NR_CPUS_DEFAULT_8
2185 default "16" if NR_CPUS_DEFAULT_16
2186 default "32" if NR_CPUS_DEFAULT_32
2187 default "64" if NR_CPUS_DEFAULT_64
2189 This allows you to specify the maximum number of CPUs which this
2190 kernel will support. The maximum supported value is 32 for 32-bit
2191 kernel and 64 for 64-bit kernels; the minimum value which makes
2192 sense is 1 for Qemu (useful only for kernel debugging purposes)
2193 and 2 for all others.
2195 This is purely to save memory - each supported CPU adds
2196 approximately eight kilobytes to the kernel image. For best
2197 performance should round up your number of processors to the next
2200 config MIPS_PERF_SHARED_TC_COUNTERS
2204 # Timer Interrupt Frequency Configuration
2208 prompt "Timer frequency"
2211 Allows the configuration of the timer frequency.
2214 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2217 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2220 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2223 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2226 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2229 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2232 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2236 config SYS_SUPPORTS_48HZ
2239 config SYS_SUPPORTS_100HZ
2242 config SYS_SUPPORTS_128HZ
2245 config SYS_SUPPORTS_250HZ
2248 config SYS_SUPPORTS_256HZ
2251 config SYS_SUPPORTS_1000HZ
2254 config SYS_SUPPORTS_1024HZ
2257 config SYS_SUPPORTS_ARBIT_HZ
2259 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2260 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2261 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2262 !SYS_SUPPORTS_1024HZ
2267 default 100 if HZ_100
2268 default 128 if HZ_128
2269 default 250 if HZ_250
2270 default 256 if HZ_256
2271 default 1000 if HZ_1000
2272 default 1024 if HZ_1024
2274 source "kernel/Kconfig.preempt"
2277 bool "Kexec system call"
2279 kexec is a system call that implements the ability to shutdown your
2280 current kernel, and to start another kernel. It is like a reboot
2281 but it is independent of the system firmware. And like a reboot
2282 you can start any kernel with it, not just Linux.
2284 The name comes from the similarity to the exec system call.
2286 It is an ongoing process to be certain the hardware in a machine
2287 is properly shutdown, so do not be surprised if this code does not
2288 initially work for you. As of this writing the exact hardware
2289 interface is strongly in flux, so no good recommendation can be
2293 bool "Kernel crash dumps"
2295 Generate crash dump after being started by kexec.
2296 This should be normally only set in special crash dump kernels
2297 which are loaded in the main kernel with kexec-tools into
2298 a specially reserved region and then later executed after
2299 a crash by kdump/kexec. The crash dump kernel must be compiled
2300 to a memory address not used by the main kernel or firmware using
2303 config PHYSICAL_START
2304 hex "Physical address where the kernel is loaded"
2305 default "0xffffffff84000000" if 64BIT
2306 default "0x84000000" if 32BIT
2307 depends on CRASH_DUMP
2309 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2310 If you plan to use kernel for capturing the crash dump change
2311 this value to start of the reserved region (the "X" value as
2312 specified in the "crashkernel=YM@XM" command line boot parameter
2313 passed to the panic-ed kernel).
2316 bool "Enable seccomp to safely compute untrusted bytecode"
2320 This kernel feature is useful for number crunching applications
2321 that may need to compute untrusted bytecode during their
2322 execution. By using pipes or other transports made available to
2323 the process as file descriptors supporting the read/write
2324 syscalls, it's possible to isolate those applications in
2325 their own address space using seccomp. Once seccomp is
2326 enabled via /proc/<pid>/seccomp, it cannot be disabled
2327 and the task is only allowed to execute a few safe syscalls
2328 defined by each seccomp mode.
2330 If unsure, say Y. Only embedded should say N here.
2332 config CC_STACKPROTECTOR
2333 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2335 This option turns on the -fstack-protector GCC feature. This
2336 feature puts, at the beginning of functions, a canary value on
2337 the stack just before the return address, and validates
2338 the value just before actually returning. Stack based buffer
2339 overflows (that need to overwrite this return address) now also
2340 overwrite the canary, which gets detected and the attack is then
2341 neutralized via a kernel panic.
2343 This feature requires gcc version 4.2 or above.
2345 config MIPS_O32_FP64_SUPPORT
2346 bool "Support for O32 binaries using 64-bit FP"
2347 depends on 32BIT || MIPS32_O32
2350 When this is enabled, the kernel will support use of 64-bit floating
2351 point registers with binaries using the O32 ABI along with the
2352 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2353 32-bit MIPS systems this support is at the cost of increasing the
2354 size and complexity of the compiled FPU emulator. Thus if you are
2355 running a MIPS32 system and know that none of your userland binaries
2356 will require 64-bit floating point, you may wish to reduce the size
2357 of your kernel & potentially improve FP emulation performance by
2365 select OF_EARLY_FLATTREE
2370 config LOCKDEP_SUPPORT
2374 config STACKTRACE_SUPPORT
2378 source "init/Kconfig"
2380 source "kernel/Kconfig.freezer"
2382 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2390 bool "Support for PCI controller"
2391 depends on HW_HAS_PCI
2393 select NO_GENERIC_PCI_IOPORT_MAP
2395 Find out whether you have a PCI motherboard. PCI is the name of a
2396 bus system, i.e. the way the CPU talks to the other stuff inside
2397 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2403 source "drivers/pci/Kconfig"
2405 source "drivers/pci/pcie/Kconfig"
2408 # ISA support is now enabled via select. Too many systems still have the one
2409 # or other ISA chip on the board that users don't know about so don't expect
2410 # users to choose the right thing ...
2417 depends on HW_HAS_EISA
2419 select GENERIC_ISA_DMA
2421 The Extended Industry Standard Architecture (EISA) bus was
2422 developed as an open alternative to the IBM MicroChannel bus.
2424 The EISA bus provided some of the features of the IBM MicroChannel
2425 bus while maintaining backward compatibility with cards made for
2426 the older ISA bus. The EISA bus saw limited use between 1988 and
2427 1995 when it was made obsolete by the PCI bus.
2429 Say Y here if you are building a kernel for an EISA-based machine.
2433 source "drivers/eisa/Kconfig"
2436 bool "TURBOchannel support"
2437 depends on MACH_DECSTATION
2439 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2440 processors. TURBOchannel programming specifications are available
2442 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2444 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2445 Linux driver support status is documented at:
2446 <http://www.linux-mips.org/wiki/DECstation>
2456 select MIPS_EXTERNAL_TIMER
2464 source "drivers/pcmcia/Kconfig"
2466 source "drivers/pci/hotplug/Kconfig"
2469 bool "RapidIO support"
2473 If you say Y here, the kernel will include drivers and
2474 infrastructure code to support RapidIO interconnect devices.
2476 source "drivers/rapidio/Kconfig"
2480 menu "Executable file formats"
2482 source "fs/Kconfig.binfmt"
2487 config MIPS32_COMPAT
2488 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2491 Select this option if you want Linux/MIPS 32-bit binary
2492 compatibility. Since all software available for Linux/MIPS is
2493 currently 32-bit you should say Y here.
2497 depends on MIPS32_COMPAT
2498 select ARCH_WANT_OLD_COMPAT_IPC
2501 config SYSVIPC_COMPAT
2503 depends on COMPAT && SYSVIPC
2507 bool "Kernel support for o32 binaries"
2508 depends on MIPS32_COMPAT
2510 Select this option if you want to run o32 binaries. These are pure
2511 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2512 existing binaries are in this format.
2517 bool "Kernel support for n32 binaries"
2518 depends on MIPS32_COMPAT
2520 Select this option if you want to run n32 binaries. These are
2521 64-bit binaries using 32-bit quantities for addressing and certain
2522 data that would normally be 64-bit. They are used in special
2529 default y if MIPS32_O32 || MIPS32_N32
2533 menu "Power management options"
2535 config ARCH_HIBERNATION_POSSIBLE
2537 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2539 config ARCH_SUSPEND_POSSIBLE
2541 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2543 source "kernel/power/Kconfig"
2547 config MIPS_EXTERNAL_TIMER
2550 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2551 menu "CPU Power Management"
2552 source "drivers/cpufreq/Kconfig"
2556 source "net/Kconfig"
2558 source "drivers/Kconfig"
2560 source "drivers/firmware/Kconfig"
2564 source "arch/mips/Kconfig.debug"
2566 source "security/Kconfig"
2568 source "crypto/Kconfig"
2570 source "lib/Kconfig"
2572 source "arch/mips/kvm/Kconfig"