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
11 select PERF_USE_VMALLOC
13 select HAVE_ARCH_SECCOMP_FILTER
14 select HAVE_ARCH_TRACEHOOK
15 select HAVE_BPF_JIT if !CPU_MICROMIPS
16 select ARCH_HAVE_CUSTOM_GPIO_H
17 select HAVE_FUNCTION_TRACER
18 select HAVE_DYNAMIC_FTRACE
19 select HAVE_FTRACE_MCOUNT_RECORD
20 select HAVE_C_RECORDMCOUNT
21 select HAVE_FUNCTION_GRAPH_TRACER
23 select HAVE_KRETPROBES
24 select HAVE_DEBUG_KMEMLEAK
25 select HAVE_SYSCALL_TRACEPOINTS
26 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
27 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
28 select RTC_LIB if !MACH_LOONGSON
29 select GENERIC_ATOMIC64 if !64BIT
30 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
32 select HAVE_DMA_CONTIGUOUS
33 select HAVE_DMA_API_DEBUG
34 select GENERIC_IRQ_PROBE
35 select GENERIC_IRQ_SHOW
36 select GENERIC_PCI_IOMAP
37 select HAVE_ARCH_JUMP_LABEL
38 select ARCH_WANT_IPC_PARSE_VERSION
39 select IRQ_FORCED_THREADING
41 select HAVE_MEMBLOCK_NODE_MAP
42 select ARCH_DISCARD_MEMBLOCK
43 select GENERIC_SMP_IDLE_THREAD
44 select BUILDTIME_EXTABLE_SORT
45 select GENERIC_CLOCKEVENTS
46 select GENERIC_CMOS_UPDATE
47 select HAVE_MOD_ARCH_SPECIFIC
49 select MODULES_USE_ELF_REL if MODULES
50 select MODULES_USE_ELF_RELA if MODULES && 64BIT
51 select CLONE_BACKWARDS
52 select HAVE_DEBUG_STACKOVERFLOW
53 select HAVE_CC_STACKPROTECTOR
54 select CPU_PM if CPU_IDLE
55 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
56 select ARCH_BINFMT_ELF_STATE
57 select SYSCTL_EXCEPTION_TRACE
59 menu "Machine selection"
66 bool "Alchemy processor based machines"
67 select ARCH_PHYS_ADDR_T_64BIT
71 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
72 select SYS_HAS_CPU_MIPS32_R1
73 select SYS_SUPPORTS_32BIT_KERNEL
74 select SYS_SUPPORTS_APM_EMULATION
75 select ARCH_REQUIRE_GPIOLIB
76 select SYS_SUPPORTS_ZBOOT
80 bool "Texas Instruments AR7"
82 select DMA_NONCOHERENT
88 select SYS_HAS_CPU_MIPS32_R1
89 select SYS_HAS_EARLY_PRINTK
90 select SYS_SUPPORTS_32BIT_KERNEL
91 select SYS_SUPPORTS_LITTLE_ENDIAN
92 select SYS_SUPPORTS_MIPS16
93 select SYS_SUPPORTS_ZBOOT_UART16550
94 select ARCH_REQUIRE_GPIOLIB
98 Support for the Texas Instruments AR7 System-on-a-Chip
99 family: TNETD7100, 7200 and 7300.
102 bool "Atheros AR231x/AR531x SoC support"
105 select DMA_NONCOHERENT
108 select SYS_HAS_CPU_MIPS32_R1
109 select SYS_SUPPORTS_BIG_ENDIAN
110 select SYS_SUPPORTS_32BIT_KERNEL
111 select SYS_HAS_EARLY_PRINTK
113 Support for Atheros AR231x and Atheros AR531x based boards
116 bool "Atheros AR71XX/AR724X/AR913X based boards"
117 select ARCH_REQUIRE_GPIOLIB
121 select DMA_NONCOHERENT
126 select SYS_HAS_CPU_MIPS32_R2
127 select SYS_HAS_EARLY_PRINTK
128 select SYS_SUPPORTS_32BIT_KERNEL
129 select SYS_SUPPORTS_BIG_ENDIAN
130 select SYS_SUPPORTS_MIPS16
132 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
135 bool "Broadcom BCM3384 based boards"
137 select NO_EXCEPT_FILL
143 select DMA_NONCOHERENT
145 select SYS_SUPPORTS_32BIT_KERNEL
146 select SYS_SUPPORTS_BIG_ENDIAN
147 select SYS_SUPPORTS_HIGHMEM
148 select SYS_HAS_CPU_BMIPS5000
150 select USB_EHCI_BIG_ENDIAN_DESC
151 select USB_EHCI_BIG_ENDIAN_MMIO
152 select USB_OHCI_BIG_ENDIAN_DESC
153 select USB_OHCI_BIG_ENDIAN_MMIO
155 Support for BCM3384 based boards. BCM3384/BCM33843 is a cable modem
156 chipset with a Linux application processor that is often used to
157 provide Samba services, a CUPS print server, and/or advanced routing
161 bool "Broadcom BCM47XX based boards"
162 select ARCH_WANT_OPTIONAL_GPIOLIB
166 select DMA_NONCOHERENT
169 select SYS_HAS_CPU_MIPS32_R1
170 select NO_EXCEPT_FILL
171 select SYS_SUPPORTS_32BIT_KERNEL
172 select SYS_SUPPORTS_LITTLE_ENDIAN
173 select SYS_SUPPORTS_MIPS16
174 select SYS_HAS_EARLY_PRINTK
175 select USE_GENERIC_EARLY_PRINTK_8250
177 select LEDS_GPIO_REGISTER
179 Support for BCM47XX based boards
182 bool "Broadcom BCM63XX based boards"
187 select DMA_NONCOHERENT
189 select SYS_SUPPORTS_32BIT_KERNEL
190 select SYS_SUPPORTS_BIG_ENDIAN
191 select SYS_HAS_EARLY_PRINTK
193 select ARCH_REQUIRE_GPIOLIB
195 select MIPS_L1_CACHE_SHIFT_4
197 Support for BCM63XX based boards
204 select DMA_NONCOHERENT
210 select PCI_GT64XXX_PCI0
212 select SYS_HAS_CPU_NEVADA
213 select SYS_HAS_EARLY_PRINTK
214 select SYS_SUPPORTS_32BIT_KERNEL
215 select SYS_SUPPORTS_64BIT_KERNEL
216 select SYS_SUPPORTS_LITTLE_ENDIAN
217 select USE_GENERIC_EARLY_PRINTK_8250
219 config MACH_DECSTATION
223 select CEVT_R4K if CPU_R4X00
225 select CSRC_R4K if CPU_R4X00
226 select CPU_DADDI_WORKAROUNDS if 64BIT
227 select CPU_R4000_WORKAROUNDS if 64BIT
228 select CPU_R4400_WORKAROUNDS if 64BIT
229 select DMA_NONCOHERENT
232 select SYS_HAS_CPU_R3000
233 select SYS_HAS_CPU_R4X00
234 select SYS_SUPPORTS_32BIT_KERNEL
235 select SYS_SUPPORTS_64BIT_KERNEL
236 select SYS_SUPPORTS_LITTLE_ENDIAN
237 select SYS_SUPPORTS_128HZ
238 select SYS_SUPPORTS_256HZ
239 select SYS_SUPPORTS_1024HZ
240 select MIPS_L1_CACHE_SHIFT_4
242 This enables support for DEC's MIPS based workstations. For details
243 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
244 DECstation porting pages on <http://decstation.unix-ag.org/>.
246 If you have one of the following DECstation Models you definitely
247 want to choose R4xx0 for the CPU Type:
254 otherwise choose R3000.
257 bool "Jazz family of machines"
260 select ARCH_MAY_HAVE_PC_FDC
263 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
264 select GENERIC_ISA_DMA
265 select HAVE_PCSPKR_PLATFORM
270 select SYS_HAS_CPU_R4X00
271 select SYS_SUPPORTS_32BIT_KERNEL
272 select SYS_SUPPORTS_64BIT_KERNEL
273 select SYS_SUPPORTS_100HZ
275 This a family of machines based on the MIPS R4030 chipset which was
276 used by several vendors to build RISC/os and Windows NT workstations.
277 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
278 Olivetti M700-10 workstations.
281 bool "Ingenic JZ4740 based machines"
282 select SYS_HAS_CPU_MIPS32_R1
283 select SYS_SUPPORTS_32BIT_KERNEL
284 select SYS_SUPPORTS_LITTLE_ENDIAN
285 select SYS_SUPPORTS_ZBOOT_UART16550
286 select DMA_NONCOHERENT
288 select ARCH_REQUIRE_GPIOLIB
289 select SYS_HAS_EARLY_PRINTK
291 select GENERIC_IRQ_CHIP
294 bool "Lantiq based platforms"
295 select DMA_NONCOHERENT
299 select SYS_HAS_CPU_MIPS32_R1
300 select SYS_HAS_CPU_MIPS32_R2
301 select SYS_SUPPORTS_BIG_ENDIAN
302 select SYS_SUPPORTS_32BIT_KERNEL
303 select SYS_SUPPORTS_MIPS16
304 select SYS_SUPPORTS_MULTITHREADING
305 select SYS_HAS_EARLY_PRINTK
306 select ARCH_REQUIRE_GPIOLIB
309 select HAVE_MACH_CLKDEV
313 select PINCTRL_LANTIQ
314 select ARCH_HAS_RESET_CONTROLLER
315 select RESET_CONTROLLER
318 bool "LASAT Networks platforms"
322 select DMA_NONCOHERENT
323 select SYS_HAS_EARLY_PRINTK
326 select PCI_GT64XXX_PCI0
328 select R5000_CPU_SCACHE
329 select SYS_HAS_CPU_R5000
330 select SYS_SUPPORTS_32BIT_KERNEL
331 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
332 select SYS_SUPPORTS_LITTLE_ENDIAN
335 bool "Loongson family of machines"
336 select SYS_SUPPORTS_ZBOOT
338 This enables the support of Loongson family of machines.
340 Loongson is a family of general-purpose MIPS-compatible CPUs.
341 developed at Institute of Computing Technology (ICT),
342 Chinese Academy of Sciences (CAS) in the People's Republic
343 of China. The chief architect is Professor Weiwu Hu.
345 config MACH_LOONGSON1
346 bool "Loongson 1 family of machines"
347 select SYS_SUPPORTS_ZBOOT
349 This enables support for the Loongson 1 based machines.
351 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
352 the ICT (Institute of Computing Technology) and the Chinese Academy
356 bool "MIPS Malta board"
357 select ARCH_MAY_HAVE_PC_FDC
362 select CLKSRC_MIPS_GIC
363 select DMA_MAYBE_COHERENT
364 select GENERIC_ISA_DMA
365 select HAVE_PCSPKR_PLATFORM
372 select MIPS_CPU_SCACHE
373 select MIPS_L1_CACHE_SHIFT_6
374 select PCI_GT64XXX_PCI0
377 select SYS_HAS_CPU_MIPS32_R1
378 select SYS_HAS_CPU_MIPS32_R2
379 select SYS_HAS_CPU_MIPS32_R3_5
380 select SYS_HAS_CPU_MIPS32_R5
381 select SYS_HAS_CPU_MIPS32_R6
382 select SYS_HAS_CPU_MIPS64_R1
383 select SYS_HAS_CPU_MIPS64_R2
384 select SYS_HAS_CPU_MIPS64_R6
385 select SYS_HAS_CPU_NEVADA
386 select SYS_HAS_CPU_RM7000
387 select SYS_SUPPORTS_32BIT_KERNEL
388 select SYS_SUPPORTS_64BIT_KERNEL
389 select SYS_SUPPORTS_BIG_ENDIAN
390 select SYS_SUPPORTS_HIGHMEM
391 select SYS_SUPPORTS_LITTLE_ENDIAN
392 select SYS_SUPPORTS_MICROMIPS
393 select SYS_SUPPORTS_MIPS_CMP
394 select SYS_SUPPORTS_MIPS_CPS
395 select SYS_SUPPORTS_MIPS16
396 select SYS_SUPPORTS_MULTITHREADING
397 select SYS_SUPPORTS_SMARTMIPS
398 select SYS_SUPPORTS_ZBOOT
400 This enables support for the MIPS Technologies Malta evaluation
404 bool "MIPS SEAD3 board"
410 select CLKSRC_MIPS_GIC
411 select CPU_MIPSR2_IRQ_VI
412 select CPU_MIPSR2_IRQ_EI
413 select DMA_NONCOHERENT
418 select SYS_HAS_CPU_MIPS32_R1
419 select SYS_HAS_CPU_MIPS32_R2
420 select SYS_HAS_CPU_MIPS64_R1
421 select SYS_HAS_EARLY_PRINTK
422 select SYS_SUPPORTS_32BIT_KERNEL
423 select SYS_SUPPORTS_64BIT_KERNEL
424 select SYS_SUPPORTS_BIG_ENDIAN
425 select SYS_SUPPORTS_LITTLE_ENDIAN
426 select SYS_SUPPORTS_SMARTMIPS
427 select SYS_SUPPORTS_MICROMIPS
428 select SYS_SUPPORTS_MIPS16
429 select USB_EHCI_BIG_ENDIAN_DESC
430 select USB_EHCI_BIG_ENDIAN_MMIO
433 This enables support for the MIPS Technologies SEAD3 evaluation
437 bool "NEC EMMA2RH Mark-eins board"
441 This enables support for the NEC Electronics Mark-eins boards.
444 bool "NEC VR4100 series based machines"
447 select SYS_HAS_CPU_VR41XX
448 select SYS_SUPPORTS_MIPS16
449 select ARCH_REQUIRE_GPIOLIB
452 bool "NXP STB220 board"
455 Support for NXP Semiconductors STB220 Development Board.
462 Support for NXP Semiconductors STB225 Development Board.
465 bool "PMC-Sierra MSP chipsets"
468 select DMA_NONCOHERENT
470 select NO_EXCEPT_FILL
472 select SYS_HAS_CPU_MIPS32_R1
473 select SYS_HAS_CPU_MIPS32_R2
474 select SYS_SUPPORTS_32BIT_KERNEL
475 select SYS_SUPPORTS_BIG_ENDIAN
476 select SYS_SUPPORTS_MIPS16
479 select SERIAL_8250_CONSOLE
480 select USB_EHCI_BIG_ENDIAN_MMIO
481 select USB_EHCI_BIG_ENDIAN_DESC
483 This adds support for the PMC-Sierra family of Multi-Service
484 Processor System-On-A-Chips. These parts include a number
485 of integrated peripherals, interfaces and DSPs in addition to
486 a variety of MIPS cores.
489 bool "Ralink based machines"
493 select DMA_NONCOHERENT
496 select SYS_HAS_CPU_MIPS32_R1
497 select SYS_HAS_CPU_MIPS32_R2
498 select SYS_SUPPORTS_32BIT_KERNEL
499 select SYS_SUPPORTS_LITTLE_ENDIAN
500 select SYS_SUPPORTS_MIPS16
501 select SYS_HAS_EARLY_PRINTK
502 select HAVE_MACH_CLKDEV
504 select ARCH_HAS_RESET_CONTROLLER
505 select RESET_CONTROLLER
508 bool "SGI IP22 (Indy/Indigo2)"
514 select DEFAULT_SGI_PARTITION
515 select DMA_NONCOHERENT
519 select IP22_CPU_SCACHE
521 select GENERIC_ISA_DMA_SUPPORT_BROKEN
523 select SGI_HAS_INDYDOG
529 select SYS_HAS_CPU_R4X00
530 select SYS_HAS_CPU_R5000
532 # Disable EARLY_PRINTK for now since it leads to overwritten prom
533 # memory during early boot on some machines.
535 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
536 # for a more details discussion
538 # select SYS_HAS_EARLY_PRINTK
539 select SYS_SUPPORTS_32BIT_KERNEL
540 select SYS_SUPPORTS_64BIT_KERNEL
541 select SYS_SUPPORTS_BIG_ENDIAN
542 select MIPS_L1_CACHE_SHIFT_7
544 This are the SGI Indy, Challenge S and Indigo2, as well as certain
545 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
546 that runs on these, say Y here.
549 bool "SGI IP27 (Origin200/2000)"
553 select DEFAULT_SGI_PARTITION
555 select SYS_HAS_EARLY_PRINTK
557 select NR_CPUS_DEFAULT_64
558 select SYS_HAS_CPU_R10000
559 select SYS_SUPPORTS_64BIT_KERNEL
560 select SYS_SUPPORTS_BIG_ENDIAN
561 select SYS_SUPPORTS_NUMA
562 select SYS_SUPPORTS_SMP
563 select MIPS_L1_CACHE_SHIFT_7
565 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
566 workstations. To compile a Linux kernel that runs on these, say Y
570 bool "SGI IP28 (Indigo2 R10k)"
576 select DEFAULT_SGI_PARTITION
577 select DMA_NONCOHERENT
578 select GENERIC_ISA_DMA_SUPPORT_BROKEN
584 select SGI_HAS_INDYDOG
590 select SYS_HAS_CPU_R10000
592 # Disable EARLY_PRINTK for now since it leads to overwritten prom
593 # memory during early boot on some machines.
595 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
596 # for a more details discussion
598 # select SYS_HAS_EARLY_PRINTK
599 select SYS_SUPPORTS_64BIT_KERNEL
600 select SYS_SUPPORTS_BIG_ENDIAN
601 select MIPS_L1_CACHE_SHIFT_7
603 This is the SGI Indigo2 with R10000 processor. To compile a Linux
604 kernel that runs on these, say Y here.
613 select DMA_NONCOHERENT
616 select R5000_CPU_SCACHE
617 select RM7000_CPU_SCACHE
618 select SYS_HAS_CPU_R5000
619 select SYS_HAS_CPU_R10000 if BROKEN
620 select SYS_HAS_CPU_RM7000
621 select SYS_HAS_CPU_NEVADA
622 select SYS_SUPPORTS_64BIT_KERNEL
623 select SYS_SUPPORTS_BIG_ENDIAN
625 If you want this kernel to run on SGI O2 workstation, say Y here.
628 bool "Sibyte BCM91120C-CRhine"
631 select SIBYTE_BCM1120
633 select SYS_HAS_CPU_SB1
634 select SYS_SUPPORTS_BIG_ENDIAN
635 select SYS_SUPPORTS_LITTLE_ENDIAN
638 bool "Sibyte BCM91120x-Carmel"
641 select SIBYTE_BCM1120
643 select SYS_HAS_CPU_SB1
644 select SYS_SUPPORTS_BIG_ENDIAN
645 select SYS_SUPPORTS_LITTLE_ENDIAN
648 bool "Sibyte BCM91125C-CRhone"
651 select SIBYTE_BCM1125
653 select SYS_HAS_CPU_SB1
654 select SYS_SUPPORTS_BIG_ENDIAN
655 select SYS_SUPPORTS_HIGHMEM
656 select SYS_SUPPORTS_LITTLE_ENDIAN
659 bool "Sibyte BCM91125E-Rhone"
662 select SIBYTE_BCM1125H
664 select SYS_HAS_CPU_SB1
665 select SYS_SUPPORTS_BIG_ENDIAN
666 select SYS_SUPPORTS_LITTLE_ENDIAN
669 bool "Sibyte BCM91250A-SWARM"
672 select HAVE_PATA_PLATFORM
675 select SYS_HAS_CPU_SB1
676 select SYS_SUPPORTS_BIG_ENDIAN
677 select SYS_SUPPORTS_HIGHMEM
678 select SYS_SUPPORTS_LITTLE_ENDIAN
679 select ZONE_DMA32 if 64BIT
681 config SIBYTE_LITTLESUR
682 bool "Sibyte BCM91250C2-LittleSur"
685 select HAVE_PATA_PLATFORM
688 select SYS_HAS_CPU_SB1
689 select SYS_SUPPORTS_BIG_ENDIAN
690 select SYS_SUPPORTS_HIGHMEM
691 select SYS_SUPPORTS_LITTLE_ENDIAN
693 config SIBYTE_SENTOSA
694 bool "Sibyte BCM91250E-Sentosa"
699 select SYS_HAS_CPU_SB1
700 select SYS_SUPPORTS_BIG_ENDIAN
701 select SYS_SUPPORTS_LITTLE_ENDIAN
704 bool "Sibyte BCM91480B-BigSur"
707 select NR_CPUS_DEFAULT_4
708 select SIBYTE_BCM1x80
710 select SYS_HAS_CPU_SB1
711 select SYS_SUPPORTS_BIG_ENDIAN
712 select SYS_SUPPORTS_HIGHMEM
713 select SYS_SUPPORTS_LITTLE_ENDIAN
714 select ZONE_DMA32 if 64BIT
717 bool "SNI RM200/300/400"
718 select FW_ARC if CPU_LITTLE_ENDIAN
719 select FW_ARC32 if CPU_LITTLE_ENDIAN
720 select FW_SNIPROM if CPU_BIG_ENDIAN
721 select ARCH_MAY_HAVE_PC_FDC
725 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
726 select DMA_NONCOHERENT
727 select GENERIC_ISA_DMA
728 select HAVE_PCSPKR_PLATFORM
735 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
736 select SYS_HAS_CPU_R4X00
737 select SYS_HAS_CPU_R5000
738 select SYS_HAS_CPU_R10000
739 select R5000_CPU_SCACHE
740 select SYS_HAS_EARLY_PRINTK
741 select SYS_SUPPORTS_32BIT_KERNEL
742 select SYS_SUPPORTS_64BIT_KERNEL
743 select SYS_SUPPORTS_BIG_ENDIAN
744 select SYS_SUPPORTS_HIGHMEM
745 select SYS_SUPPORTS_LITTLE_ENDIAN
747 The SNI RM200/300/400 are MIPS-based machines manufactured by
748 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
749 Technology and now in turn merged with Fujitsu. Say Y here to
750 support this machine type.
753 bool "Toshiba TX39 series based machines"
756 bool "Toshiba TX49 series based machines"
758 config MIKROTIK_RB532
759 bool "Mikrotik RB532 boards"
762 select DMA_NONCOHERENT
765 select SYS_HAS_CPU_MIPS32_R1
766 select SYS_SUPPORTS_32BIT_KERNEL
767 select SYS_SUPPORTS_LITTLE_ENDIAN
770 select ARCH_REQUIRE_GPIOLIB
771 select MIPS_L1_CACHE_SHIFT_4
773 Support the Mikrotik(tm) RouterBoard 532 series,
774 based on the IDT RC32434 SoC.
776 config CAVIUM_OCTEON_SOC
777 bool "Cavium Networks Octeon SoC based boards"
779 select ARCH_PHYS_ADDR_T_64BIT
781 select SYS_SUPPORTS_64BIT_KERNEL
782 select SYS_SUPPORTS_BIG_ENDIAN
784 select SYS_SUPPORTS_HOTPLUG_CPU
785 select SYS_HAS_EARLY_PRINTK
786 select SYS_HAS_CPU_CAVIUM_OCTEON
791 select ARCH_REQUIRE_GPIOLIB
794 select ARCH_SPARSEMEM_ENABLE
795 select SYS_SUPPORTS_SMP
796 select NR_CPUS_DEFAULT_16
799 This option supports all of the Octeon reference boards from Cavium
800 Networks. It builds a kernel that dynamically determines the Octeon
801 CPU type and supports all known board reference implementations.
802 Some of the supported boards are:
809 Say Y here for most Octeon reference boards.
812 bool "Netlogic XLR/XLS based systems"
815 select SYS_HAS_CPU_XLR
816 select SYS_SUPPORTS_SMP
819 select SYS_SUPPORTS_32BIT_KERNEL
820 select SYS_SUPPORTS_64BIT_KERNEL
821 select ARCH_PHYS_ADDR_T_64BIT
822 select SYS_SUPPORTS_BIG_ENDIAN
823 select SYS_SUPPORTS_HIGHMEM
825 select NR_CPUS_DEFAULT_32
829 select ZONE_DMA32 if 64BIT
831 select SYS_HAS_EARLY_PRINTK
832 select SYS_SUPPORTS_ZBOOT
833 select SYS_SUPPORTS_ZBOOT_UART16550
835 Support for systems based on Netlogic XLR and XLS processors.
836 Say Y here if you have a XLR or XLS based board.
839 bool "Netlogic XLP based systems"
842 select SYS_HAS_CPU_XLP
843 select SYS_SUPPORTS_SMP
845 select SYS_SUPPORTS_32BIT_KERNEL
846 select SYS_SUPPORTS_64BIT_KERNEL
847 select ARCH_PHYS_ADDR_T_64BIT
848 select SYS_SUPPORTS_BIG_ENDIAN
849 select SYS_SUPPORTS_LITTLE_ENDIAN
850 select SYS_SUPPORTS_HIGHMEM
852 select NR_CPUS_DEFAULT_32
856 select ZONE_DMA32 if 64BIT
858 select SYS_HAS_EARLY_PRINTK
860 select SYS_SUPPORTS_ZBOOT
861 select SYS_SUPPORTS_ZBOOT_UART16550
863 This board is based on Netlogic XLP Processor.
864 Say Y here if you have a XLP based board.
867 bool "Para-Virtualized guest system"
871 select SYS_SUPPORTS_64BIT_KERNEL
872 select SYS_SUPPORTS_32BIT_KERNEL
873 select SYS_SUPPORTS_BIG_ENDIAN
874 select SYS_SUPPORTS_SMP
875 select NR_CPUS_DEFAULT_4
876 select SYS_HAS_EARLY_PRINTK
877 select SYS_HAS_CPU_MIPS32_R2
878 select SYS_HAS_CPU_MIPS64_R2
879 select SYS_HAS_CPU_CAVIUM_OCTEON
883 This option supports guest running under ????
887 source "arch/mips/alchemy/Kconfig"
888 source "arch/mips/ath25/Kconfig"
889 source "arch/mips/ath79/Kconfig"
890 source "arch/mips/bcm47xx/Kconfig"
891 source "arch/mips/bcm63xx/Kconfig"
892 source "arch/mips/jazz/Kconfig"
893 source "arch/mips/jz4740/Kconfig"
894 source "arch/mips/lantiq/Kconfig"
895 source "arch/mips/lasat/Kconfig"
896 source "arch/mips/pmcs-msp71xx/Kconfig"
897 source "arch/mips/ralink/Kconfig"
898 source "arch/mips/sgi-ip27/Kconfig"
899 source "arch/mips/sibyte/Kconfig"
900 source "arch/mips/txx9/Kconfig"
901 source "arch/mips/vr41xx/Kconfig"
902 source "arch/mips/cavium-octeon/Kconfig"
903 source "arch/mips/loongson/Kconfig"
904 source "arch/mips/loongson1/Kconfig"
905 source "arch/mips/netlogic/Kconfig"
906 source "arch/mips/paravirt/Kconfig"
910 config RWSEM_GENERIC_SPINLOCK
914 config RWSEM_XCHGADD_ALGORITHM
917 config ARCH_HAS_ILOG2_U32
921 config ARCH_HAS_ILOG2_U64
925 config GENERIC_HWEIGHT
929 config GENERIC_CALIBRATE_DELAY
933 config SCHED_OMIT_FRAME_POINTER
938 # Select some configuration options automatically based on user selections.
943 config ARCH_MAY_HAVE_PC_FDC
980 select ARCH_REQUIRE_GPIOLIB
986 config ARCH_DMA_ADDR_T_64BIT
987 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
989 config DMA_MAYBE_COHERENT
990 select DMA_NONCOHERENT
996 config DMA_NONCOHERENT
998 select NEED_DMA_MAP_STATE
1000 config NEED_DMA_MAP_STATE
1003 config SYS_HAS_EARLY_PRINTK
1007 bool "Support for hot-pluggable CPUs"
1008 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1010 Say Y here to allow turning CPUs off and on. CPUs can be
1011 controlled through /sys/devices/system/cpu.
1012 (Note: power management support will enable this option
1013 automatically on SMP systems. )
1014 Say N if you want to disable CPU hotplug.
1016 config SYS_SUPPORTS_HOTPLUG_CPU
1023 config MIPS_BONITO64
1038 config NO_IOPORT_MAP
1044 config GENERIC_ISA_DMA
1046 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1049 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1051 select GENERIC_ISA_DMA
1056 config HOLES_IN_ZONE
1060 # Endianness selection. Sufficiently obscure so many users don't know what to
1061 # answer,so we try hard to limit the available choices. Also the use of a
1062 # choice statement should be more obvious to the user.
1065 prompt "Endianness selection"
1067 Some MIPS machines can be configured for either little or big endian
1068 byte order. These modes require different kernels and a different
1069 Linux distribution. In general there is one preferred byteorder for a
1070 particular system but some systems are just as commonly used in the
1071 one or the other endianness.
1073 config CPU_BIG_ENDIAN
1075 depends on SYS_SUPPORTS_BIG_ENDIAN
1077 config CPU_LITTLE_ENDIAN
1078 bool "Little endian"
1079 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1086 config SYS_SUPPORTS_APM_EMULATION
1089 config SYS_SUPPORTS_BIG_ENDIAN
1092 config SYS_SUPPORTS_LITTLE_ENDIAN
1095 config SYS_SUPPORTS_HUGETLBFS
1097 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1100 config MIPS_HUGE_TLB_SUPPORT
1101 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1122 config PCI_GT64XXX_PCI0
1125 config NO_EXCEPT_FILL
1132 select DMA_NONCOHERENT
1134 select SWAP_IO_SPACE
1135 select SYS_HAS_CPU_R5500
1136 select SYS_SUPPORTS_32BIT_KERNEL
1137 select SYS_SUPPORTS_64BIT_KERNEL
1138 select SYS_SUPPORTS_BIG_ENDIAN
1145 select DMA_NONCOHERENT
1146 select SYS_HAS_CPU_MIPS32_R2
1147 select SYS_SUPPORTS_32BIT_KERNEL
1148 select SYS_SUPPORTS_LITTLE_ENDIAN
1149 select SYS_SUPPORTS_BIG_ENDIAN
1150 select SYS_SUPPORTS_MIPS16
1151 select CPU_MIPSR2_IRQ_VI
1160 config SWAP_IO_SPACE
1163 config SGI_HAS_INDYDOG
1175 config SGI_HAS_ZILOG
1178 config SGI_HAS_I8042
1181 config DEFAULT_SGI_PARTITION
1193 config MIPS_L1_CACHE_SHIFT_4
1196 config MIPS_L1_CACHE_SHIFT_5
1199 config MIPS_L1_CACHE_SHIFT_6
1202 config MIPS_L1_CACHE_SHIFT_7
1205 config MIPS_L1_CACHE_SHIFT
1207 default "4" if MIPS_L1_CACHE_SHIFT_4
1208 default "5" if MIPS_L1_CACHE_SHIFT_5
1209 default "6" if MIPS_L1_CACHE_SHIFT_6
1210 default "7" if MIPS_L1_CACHE_SHIFT_7
1213 config HAVE_STD_PC_SERIAL_PORT
1217 bool "ARC console support"
1218 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1222 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1227 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1236 menu "CPU selection"
1242 config CPU_LOONGSON3
1243 bool "Loongson 3 CPU"
1244 depends on SYS_HAS_CPU_LOONGSON3
1245 select CPU_SUPPORTS_64BIT_KERNEL
1246 select CPU_SUPPORTS_HIGHMEM
1247 select CPU_SUPPORTS_HUGEPAGES
1248 select WEAK_ORDERING
1249 select WEAK_REORDERING_BEYOND_LLSC
1251 The Loongson 3 processor implements the MIPS64R2 instruction
1252 set with many extensions.
1254 config CPU_LOONGSON2E
1256 depends on SYS_HAS_CPU_LOONGSON2E
1257 select CPU_LOONGSON2
1259 The Loongson 2E processor implements the MIPS III instruction set
1260 with many extensions.
1262 It has an internal FPGA northbridge, which is compatible to
1265 config CPU_LOONGSON2F
1267 depends on SYS_HAS_CPU_LOONGSON2F
1268 select CPU_LOONGSON2
1269 select ARCH_REQUIRE_GPIOLIB
1271 The Loongson 2F processor implements the MIPS III instruction set
1272 with many extensions.
1274 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1275 have a similar programming interface with FPGA northbridge used in
1278 config CPU_LOONGSON1B
1280 depends on SYS_HAS_CPU_LOONGSON1B
1281 select CPU_LOONGSON1
1283 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1284 release 2 instruction set.
1286 config CPU_MIPS32_R1
1287 bool "MIPS32 Release 1"
1288 depends on SYS_HAS_CPU_MIPS32_R1
1289 select CPU_HAS_PREFETCH
1290 select CPU_SUPPORTS_32BIT_KERNEL
1291 select CPU_SUPPORTS_HIGHMEM
1293 Choose this option to build a kernel for release 1 or later of the
1294 MIPS32 architecture. Most modern embedded systems with a 32-bit
1295 MIPS processor are based on a MIPS32 processor. If you know the
1296 specific type of processor in your system, choose those that one
1297 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1298 Release 2 of the MIPS32 architecture is available since several
1299 years so chances are you even have a MIPS32 Release 2 processor
1300 in which case you should choose CPU_MIPS32_R2 instead for better
1303 config CPU_MIPS32_R2
1304 bool "MIPS32 Release 2"
1305 depends on SYS_HAS_CPU_MIPS32_R2
1306 select CPU_HAS_PREFETCH
1307 select CPU_SUPPORTS_32BIT_KERNEL
1308 select CPU_SUPPORTS_HIGHMEM
1309 select CPU_SUPPORTS_MSA
1312 Choose this option to build a kernel for release 2 or later of the
1313 MIPS32 architecture. Most modern embedded systems with a 32-bit
1314 MIPS processor are based on a MIPS32 processor. If you know the
1315 specific type of processor in your system, choose those that one
1316 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1318 config CPU_MIPS32_R6
1319 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1320 depends on SYS_HAS_CPU_MIPS32_R6
1321 select CPU_HAS_PREFETCH
1322 select CPU_SUPPORTS_32BIT_KERNEL
1323 select CPU_SUPPORTS_HIGHMEM
1324 select CPU_SUPPORTS_MSA
1327 select MIPS_O32_FP64_SUPPORT
1329 Choose this option to build a kernel for release 6 or later of the
1330 MIPS32 architecture. New MIPS processors, starting with the Warrior
1331 family, are based on a MIPS32r6 processor. If you own an older
1332 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1334 config CPU_MIPS64_R1
1335 bool "MIPS64 Release 1"
1336 depends on SYS_HAS_CPU_MIPS64_R1
1337 select CPU_HAS_PREFETCH
1338 select CPU_SUPPORTS_32BIT_KERNEL
1339 select CPU_SUPPORTS_64BIT_KERNEL
1340 select CPU_SUPPORTS_HIGHMEM
1341 select CPU_SUPPORTS_HUGEPAGES
1343 Choose this option to build a kernel for release 1 or later of the
1344 MIPS64 architecture. Many modern embedded systems with a 64-bit
1345 MIPS processor are based on a MIPS64 processor. If you know the
1346 specific type of processor in your system, choose those that one
1347 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1348 Release 2 of the MIPS64 architecture is available since several
1349 years so chances are you even have a MIPS64 Release 2 processor
1350 in which case you should choose CPU_MIPS64_R2 instead for better
1353 config CPU_MIPS64_R2
1354 bool "MIPS64 Release 2"
1355 depends on SYS_HAS_CPU_MIPS64_R2
1356 select CPU_HAS_PREFETCH
1357 select CPU_SUPPORTS_32BIT_KERNEL
1358 select CPU_SUPPORTS_64BIT_KERNEL
1359 select CPU_SUPPORTS_HIGHMEM
1360 select CPU_SUPPORTS_HUGEPAGES
1361 select CPU_SUPPORTS_MSA
1363 Choose this option to build a kernel for release 2 or later of the
1364 MIPS64 architecture. Many modern embedded systems with a 64-bit
1365 MIPS processor are based on a MIPS64 processor. If you know the
1366 specific type of processor in your system, choose those that one
1367 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1369 config CPU_MIPS64_R6
1370 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1371 depends on SYS_HAS_CPU_MIPS64_R6
1372 select CPU_HAS_PREFETCH
1373 select CPU_SUPPORTS_32BIT_KERNEL
1374 select CPU_SUPPORTS_64BIT_KERNEL
1375 select CPU_SUPPORTS_HIGHMEM
1376 select CPU_SUPPORTS_MSA
1379 Choose this option to build a kernel for release 6 or later of the
1380 MIPS64 architecture. New MIPS processors, starting with the Warrior
1381 family, are based on a MIPS64r6 processor. If you own an older
1382 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1386 depends on SYS_HAS_CPU_R3000
1388 select CPU_SUPPORTS_32BIT_KERNEL
1389 select CPU_SUPPORTS_HIGHMEM
1391 Please make sure to pick the right CPU type. Linux/MIPS is not
1392 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1393 *not* work on R4000 machines and vice versa. However, since most
1394 of the supported machines have an R4000 (or similar) CPU, R4x00
1395 might be a safe bet. If the resulting kernel does not work,
1396 try to recompile with R3000.
1400 depends on SYS_HAS_CPU_TX39XX
1401 select CPU_SUPPORTS_32BIT_KERNEL
1405 depends on SYS_HAS_CPU_VR41XX
1406 select CPU_SUPPORTS_32BIT_KERNEL
1407 select CPU_SUPPORTS_64BIT_KERNEL
1409 The options selects support for the NEC VR4100 series of processors.
1410 Only choose this option if you have one of these processors as a
1411 kernel built with this option will not run on any other type of
1412 processor or vice versa.
1416 depends on SYS_HAS_CPU_R4300
1417 select CPU_SUPPORTS_32BIT_KERNEL
1418 select CPU_SUPPORTS_64BIT_KERNEL
1420 MIPS Technologies R4300-series processors.
1424 depends on SYS_HAS_CPU_R4X00
1425 select CPU_SUPPORTS_32BIT_KERNEL
1426 select CPU_SUPPORTS_64BIT_KERNEL
1427 select CPU_SUPPORTS_HUGEPAGES
1429 MIPS Technologies R4000-series processors other than 4300, including
1430 the R4000, R4400, R4600, and 4700.
1434 depends on SYS_HAS_CPU_TX49XX
1435 select CPU_HAS_PREFETCH
1436 select CPU_SUPPORTS_32BIT_KERNEL
1437 select CPU_SUPPORTS_64BIT_KERNEL
1438 select CPU_SUPPORTS_HUGEPAGES
1442 depends on SYS_HAS_CPU_R5000
1443 select CPU_SUPPORTS_32BIT_KERNEL
1444 select CPU_SUPPORTS_64BIT_KERNEL
1445 select CPU_SUPPORTS_HUGEPAGES
1447 MIPS Technologies R5000-series processors other than the Nevada.
1451 depends on SYS_HAS_CPU_R5432
1452 select CPU_SUPPORTS_32BIT_KERNEL
1453 select CPU_SUPPORTS_64BIT_KERNEL
1454 select CPU_SUPPORTS_HUGEPAGES
1458 depends on SYS_HAS_CPU_R5500
1459 select CPU_SUPPORTS_32BIT_KERNEL
1460 select CPU_SUPPORTS_64BIT_KERNEL
1461 select CPU_SUPPORTS_HUGEPAGES
1463 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1468 depends on SYS_HAS_CPU_R6000
1469 select CPU_SUPPORTS_32BIT_KERNEL
1471 MIPS Technologies R6000 and R6000A series processors. Note these
1472 processors are extremely rare and the support for them is incomplete.
1476 depends on SYS_HAS_CPU_NEVADA
1477 select CPU_SUPPORTS_32BIT_KERNEL
1478 select CPU_SUPPORTS_64BIT_KERNEL
1479 select CPU_SUPPORTS_HUGEPAGES
1481 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1485 depends on SYS_HAS_CPU_R8000
1486 select CPU_HAS_PREFETCH
1487 select CPU_SUPPORTS_64BIT_KERNEL
1489 MIPS Technologies R8000 processors. Note these processors are
1490 uncommon and the support for them is incomplete.
1494 depends on SYS_HAS_CPU_R10000
1495 select CPU_HAS_PREFETCH
1496 select CPU_SUPPORTS_32BIT_KERNEL
1497 select CPU_SUPPORTS_64BIT_KERNEL
1498 select CPU_SUPPORTS_HIGHMEM
1499 select CPU_SUPPORTS_HUGEPAGES
1501 MIPS Technologies R10000-series processors.
1505 depends on SYS_HAS_CPU_RM7000
1506 select CPU_HAS_PREFETCH
1507 select CPU_SUPPORTS_32BIT_KERNEL
1508 select CPU_SUPPORTS_64BIT_KERNEL
1509 select CPU_SUPPORTS_HIGHMEM
1510 select CPU_SUPPORTS_HUGEPAGES
1514 depends on SYS_HAS_CPU_SB1
1515 select CPU_SUPPORTS_32BIT_KERNEL
1516 select CPU_SUPPORTS_64BIT_KERNEL
1517 select CPU_SUPPORTS_HIGHMEM
1518 select CPU_SUPPORTS_HUGEPAGES
1519 select WEAK_ORDERING
1521 config CPU_CAVIUM_OCTEON
1522 bool "Cavium Octeon processor"
1523 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1524 select CPU_HAS_PREFETCH
1525 select CPU_SUPPORTS_64BIT_KERNEL
1526 select WEAK_ORDERING
1527 select CPU_SUPPORTS_HIGHMEM
1528 select CPU_SUPPORTS_HUGEPAGES
1529 select USB_EHCI_BIG_ENDIAN_MMIO
1530 select MIPS_L1_CACHE_SHIFT_7
1532 The Cavium Octeon processor is a highly integrated chip containing
1533 many ethernet hardware widgets for networking tasks. The processor
1534 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1535 Full details can be found at http://www.caviumnetworks.com.
1538 bool "Broadcom BMIPS"
1539 depends on SYS_HAS_CPU_BMIPS
1541 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1542 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1543 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1544 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1545 select CPU_SUPPORTS_32BIT_KERNEL
1546 select DMA_NONCOHERENT
1548 select SWAP_IO_SPACE
1549 select WEAK_ORDERING
1550 select CPU_SUPPORTS_HIGHMEM
1551 select CPU_HAS_PREFETCH
1553 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1556 bool "Netlogic XLR SoC"
1557 depends on SYS_HAS_CPU_XLR
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
1563 select WEAK_REORDERING_BEYOND_LLSC
1565 Netlogic Microsystems XLR/XLS processors.
1568 bool "Netlogic XLP SoC"
1569 depends on SYS_HAS_CPU_XLP
1570 select CPU_SUPPORTS_32BIT_KERNEL
1571 select CPU_SUPPORTS_64BIT_KERNEL
1572 select CPU_SUPPORTS_HIGHMEM
1573 select WEAK_ORDERING
1574 select WEAK_REORDERING_BEYOND_LLSC
1575 select CPU_HAS_PREFETCH
1578 Netlogic Microsystems XLP processors.
1581 config CPU_MIPS32_3_5_FEATURES
1582 bool "MIPS32 Release 3.5 Features"
1583 depends on SYS_HAS_CPU_MIPS32_R3_5
1584 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1586 Choose this option to build a kernel for release 2 or later of the
1587 MIPS32 architecture including features from the 3.5 release such as
1588 support for Enhanced Virtual Addressing (EVA).
1590 config CPU_MIPS32_3_5_EVA
1591 bool "Enhanced Virtual Addressing (EVA)"
1592 depends on CPU_MIPS32_3_5_FEATURES
1596 Choose this option if you want to enable the Enhanced Virtual
1597 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1598 One of its primary benefits is an increase in the maximum size
1599 of lowmem (up to 3GB). If unsure, say 'N' here.
1601 config CPU_MIPS32_R5_FEATURES
1602 bool "MIPS32 Release 5 Features"
1603 depends on SYS_HAS_CPU_MIPS32_R5
1604 depends on CPU_MIPS32_R2
1606 Choose this option to build a kernel for release 2 or later of the
1607 MIPS32 architecture including features from release 5 such as
1608 support for Extended Physical Addressing (XPA).
1610 config CPU_MIPS32_R5_XPA
1611 bool "Extended Physical Addressing (XPA)"
1612 depends on CPU_MIPS32_R5_FEATURES
1614 depends on !PAGE_SIZE_4KB
1615 depends on SYS_SUPPORTS_HIGHMEM
1618 select ARCH_PHYS_ADDR_T_64BIT
1621 Choose this option if you want to enable the Extended Physical
1622 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1623 benefit is to increase physical addressing equal to or greater
1624 than 40 bits. Note that this has the side effect of turning on
1625 64-bit addressing which in turn makes the PTEs 64-bit in size.
1626 If unsure, say 'N' here.
1629 config CPU_NOP_WORKAROUNDS
1632 config CPU_JUMP_WORKAROUNDS
1635 config CPU_LOONGSON2F_WORKAROUNDS
1636 bool "Loongson 2F Workarounds"
1638 select CPU_NOP_WORKAROUNDS
1639 select CPU_JUMP_WORKAROUNDS
1641 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1642 require workarounds. Without workarounds the system may hang
1643 unexpectedly. For more information please refer to the gas
1644 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1646 Loongson 2F03 and later have fixed these issues and no workarounds
1647 are needed. The workarounds have no significant side effect on them
1648 but may decrease the performance of the system so this option should
1649 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1652 If unsure, please say Y.
1653 endif # CPU_LOONGSON2F
1655 config SYS_SUPPORTS_ZBOOT
1657 select HAVE_KERNEL_GZIP
1658 select HAVE_KERNEL_BZIP2
1659 select HAVE_KERNEL_LZ4
1660 select HAVE_KERNEL_LZMA
1661 select HAVE_KERNEL_LZO
1662 select HAVE_KERNEL_XZ
1664 config SYS_SUPPORTS_ZBOOT_UART16550
1666 select SYS_SUPPORTS_ZBOOT
1668 config CPU_LOONGSON2
1670 select CPU_SUPPORTS_32BIT_KERNEL
1671 select CPU_SUPPORTS_64BIT_KERNEL
1672 select CPU_SUPPORTS_HIGHMEM
1673 select CPU_SUPPORTS_HUGEPAGES
1675 config CPU_LOONGSON1
1679 select CPU_HAS_PREFETCH
1680 select CPU_SUPPORTS_32BIT_KERNEL
1681 select CPU_SUPPORTS_HIGHMEM
1682 select CPU_SUPPORTS_CPUFREQ
1684 config CPU_BMIPS32_3300
1685 select SMP_UP if SMP
1688 config CPU_BMIPS4350
1690 select SYS_SUPPORTS_SMP
1691 select SYS_SUPPORTS_HOTPLUG_CPU
1693 config CPU_BMIPS4380
1695 select MIPS_L1_CACHE_SHIFT_6
1696 select SYS_SUPPORTS_SMP
1697 select SYS_SUPPORTS_HOTPLUG_CPU
1699 config CPU_BMIPS5000
1701 select MIPS_CPU_SCACHE
1702 select MIPS_L1_CACHE_SHIFT_7
1703 select SYS_SUPPORTS_SMP
1704 select SYS_SUPPORTS_HOTPLUG_CPU
1706 config SYS_HAS_CPU_LOONGSON3
1708 select CPU_SUPPORTS_CPUFREQ
1710 config SYS_HAS_CPU_LOONGSON2E
1713 config SYS_HAS_CPU_LOONGSON2F
1715 select CPU_SUPPORTS_CPUFREQ
1716 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1717 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1719 config SYS_HAS_CPU_LOONGSON1B
1722 config SYS_HAS_CPU_MIPS32_R1
1725 config SYS_HAS_CPU_MIPS32_R2
1728 config SYS_HAS_CPU_MIPS32_R3_5
1731 config SYS_HAS_CPU_MIPS32_R5
1734 config SYS_HAS_CPU_MIPS32_R6
1737 config SYS_HAS_CPU_MIPS64_R1
1740 config SYS_HAS_CPU_MIPS64_R2
1743 config SYS_HAS_CPU_MIPS64_R6
1746 config SYS_HAS_CPU_R3000
1749 config SYS_HAS_CPU_TX39XX
1752 config SYS_HAS_CPU_VR41XX
1755 config SYS_HAS_CPU_R4300
1758 config SYS_HAS_CPU_R4X00
1761 config SYS_HAS_CPU_TX49XX
1764 config SYS_HAS_CPU_R5000
1767 config SYS_HAS_CPU_R5432
1770 config SYS_HAS_CPU_R5500
1773 config SYS_HAS_CPU_R6000
1776 config SYS_HAS_CPU_NEVADA
1779 config SYS_HAS_CPU_R8000
1782 config SYS_HAS_CPU_R10000
1785 config SYS_HAS_CPU_RM7000
1788 config SYS_HAS_CPU_SB1
1791 config SYS_HAS_CPU_CAVIUM_OCTEON
1794 config SYS_HAS_CPU_BMIPS
1797 config SYS_HAS_CPU_BMIPS32_3300
1799 select SYS_HAS_CPU_BMIPS
1801 config SYS_HAS_CPU_BMIPS4350
1803 select SYS_HAS_CPU_BMIPS
1805 config SYS_HAS_CPU_BMIPS4380
1807 select SYS_HAS_CPU_BMIPS
1809 config SYS_HAS_CPU_BMIPS5000
1811 select SYS_HAS_CPU_BMIPS
1813 config SYS_HAS_CPU_XLR
1816 config SYS_HAS_CPU_XLP
1819 config MIPS_MALTA_PM
1820 depends on MIPS_MALTA
1826 # CPU may reorder R->R, R->W, W->R, W->W
1827 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1829 config WEAK_ORDERING
1833 # CPU may reorder reads and writes beyond LL/SC
1834 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1836 config WEAK_REORDERING_BEYOND_LLSC
1841 # These two indicate any level of the MIPS32 and MIPS64 architecture
1845 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1849 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1852 # These two indicate the revision of the architecture, either Release 1 or Release 2
1856 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1860 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1865 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1874 config SYS_SUPPORTS_32BIT_KERNEL
1876 config SYS_SUPPORTS_64BIT_KERNEL
1878 config CPU_SUPPORTS_32BIT_KERNEL
1880 config CPU_SUPPORTS_64BIT_KERNEL
1882 config CPU_SUPPORTS_CPUFREQ
1884 config CPU_SUPPORTS_ADDRWINCFG
1886 config CPU_SUPPORTS_HUGEPAGES
1888 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1890 config MIPS_PGD_C0_CONTEXT
1892 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1895 # Set to y for ptrace access to watch registers.
1897 config HARDWARE_WATCHPOINTS
1899 default y if CPU_MIPSR1 || CPU_MIPSR2
1904 prompt "Kernel code model"
1906 You should only select this option if you have a workload that
1907 actually benefits from 64-bit processing or if your machine has
1908 large memory. You will only be presented a single option in this
1909 menu if your system does not support both 32-bit and 64-bit kernels.
1912 bool "32-bit kernel"
1913 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1916 Select this option if you want to build a 32-bit kernel.
1918 bool "64-bit kernel"
1919 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1921 Select this option if you want to build a 64-bit kernel.
1926 bool "KVM Guest Kernel"
1927 depends on BROKEN_ON_SMP
1929 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1931 config KVM_GUEST_TIMER_FREQ
1932 int "Count/Compare Timer Frequency (MHz)"
1933 depends on KVM_GUEST
1936 Set this to non-zero if building a guest kernel for KVM to skip RTC
1937 emulation when determining guest CPU Frequency. Instead, the guest's
1938 timer frequency is specified directly.
1941 prompt "Kernel page size"
1942 default PAGE_SIZE_4KB
1944 config PAGE_SIZE_4KB
1946 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1948 This option select the standard 4kB Linux page size. On some
1949 R3000-family processors this is the only available page size. Using
1950 4kB page size will minimize memory consumption and is therefore
1951 recommended for low memory systems.
1953 config PAGE_SIZE_8KB
1955 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1957 Using 8kB page size will result in higher performance kernel at
1958 the price of higher memory consumption. This option is available
1959 only on R8000 and cnMIPS processors. Note that you will need a
1960 suitable Linux distribution to support this.
1962 config PAGE_SIZE_16KB
1964 depends on !CPU_R3000 && !CPU_TX39XX
1966 Using 16kB page size will result in higher performance kernel at
1967 the price of higher memory consumption. This option is available on
1968 all non-R3000 family processors. Note that you will need a suitable
1969 Linux distribution to support this.
1971 config PAGE_SIZE_32KB
1973 depends on CPU_CAVIUM_OCTEON
1975 Using 32kB page size will result in higher performance kernel at
1976 the price of higher memory consumption. This option is available
1977 only on cnMIPS cores. Note that you will need a suitable Linux
1978 distribution to support this.
1980 config PAGE_SIZE_64KB
1982 depends on !CPU_R3000 && !CPU_TX39XX
1984 Using 64kB page size will result in higher performance kernel at
1985 the price of higher memory consumption. This option is available on
1986 all non-R3000 family processor. Not that at the time of this
1987 writing this option is still high experimental.
1991 config FORCE_MAX_ZONEORDER
1992 int "Maximum zone order"
1993 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1994 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1995 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1996 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1997 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1998 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2002 The kernel memory allocator divides physically contiguous memory
2003 blocks into "zones", where each zone is a power of two number of
2004 pages. This option selects the largest power of two that the kernel
2005 keeps in the memory allocator. If you need to allocate very large
2006 blocks of physically contiguous memory, then you may need to
2007 increase this value.
2009 This config option is actually maximum order plus one. For example,
2010 a value of 11 means that the largest free memory block is 2^10 pages.
2012 The page size is not necessarily 4KB. Keep this in mind
2013 when choosing a value for this option.
2018 config IP22_CPU_SCACHE
2023 # Support for a MIPS32 / MIPS64 style S-caches
2025 config MIPS_CPU_SCACHE
2029 config R5000_CPU_SCACHE
2033 config RM7000_CPU_SCACHE
2037 config SIBYTE_DMA_PAGEOPS
2038 bool "Use DMA to clear/copy pages"
2041 Instead of using the CPU to zero and copy pages, use a Data Mover
2042 channel. These DMA channels are otherwise unused by the standard
2043 SiByte Linux port. Seems to give a small performance benefit.
2045 config CPU_HAS_PREFETCH
2048 config CPU_GENERIC_DUMP_TLB
2050 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2054 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2056 config CPU_R4K_CACHE_TLB
2058 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2061 bool "MIPS MT SMP support (1 TC on each available VPE)"
2062 depends on SYS_SUPPORTS_MULTITHREADING
2063 select CPU_MIPSR2_IRQ_VI
2064 select CPU_MIPSR2_IRQ_EI
2070 select SYS_SUPPORTS_SMP
2071 select SYS_SUPPORTS_SCHED_SMT
2072 select MIPS_PERF_SHARED_TC_COUNTERS
2074 This is a kernel model which is known as SMVP. This is supported
2075 on cores with the MT ASE and uses the available VPEs to implement
2076 virtual processors which supports SMP. This is equivalent to the
2077 Intel Hyperthreading feature. For further information go to
2078 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2084 bool "SMT (multithreading) scheduler support"
2085 depends on SYS_SUPPORTS_SCHED_SMT
2088 SMT scheduler support improves the CPU scheduler's decision making
2089 when dealing with MIPS MT enabled cores at a cost of slightly
2090 increased overhead in some places. If unsure say N here.
2092 config SYS_SUPPORTS_SCHED_SMT
2095 config SYS_SUPPORTS_MULTITHREADING
2098 config MIPS_MT_FPAFF
2099 bool "Dynamic FPU affinity for FP-intensive threads"
2101 depends on MIPS_MT_SMP
2103 config MIPSR2_TO_R6_EMULATOR
2104 bool "MIPS R2-to-R6 emulator"
2105 depends on CPU_MIPSR6 && !SMP
2108 Choose this option if you want to run non-R6 MIPS userland code.
2109 Even if you say 'Y' here, the emulator will still be disabled by
2110 default. You can enable it using the 'mipsr2emu' kernel option.
2111 The only reason this is a build-time option is to save ~14K from the
2113 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2114 depends on SMP && CPU_MIPSR6
2116 config MIPS_VPE_LOADER
2117 bool "VPE loader support."
2118 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2119 select CPU_MIPSR2_IRQ_VI
2120 select CPU_MIPSR2_IRQ_EI
2123 Includes a loader for loading an elf relocatable object
2124 onto another VPE and running it.
2126 config MIPS_VPE_LOADER_CMP
2129 depends on MIPS_VPE_LOADER && MIPS_CMP
2131 config MIPS_VPE_LOADER_MT
2134 depends on MIPS_VPE_LOADER && !MIPS_CMP
2136 config MIPS_VPE_LOADER_TOM
2137 bool "Load VPE program into memory hidden from linux"
2138 depends on MIPS_VPE_LOADER
2141 The loader can use memory that is present but has been hidden from
2142 Linux using the kernel command line option "mem=xxMB". It's up to
2143 you to ensure the amount you put in the option and the space your
2144 program requires is less or equal to the amount physically present.
2146 config MIPS_VPE_APSP_API
2147 bool "Enable support for AP/SP API (RTLX)"
2148 depends on MIPS_VPE_LOADER
2151 config MIPS_VPE_APSP_API_CMP
2154 depends on MIPS_VPE_APSP_API && MIPS_CMP
2156 config MIPS_VPE_APSP_API_MT
2159 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2162 bool "MIPS CMP framework support (DEPRECATED)"
2163 depends on SYS_SUPPORTS_MIPS_CMP
2167 select SYS_SUPPORTS_SMP
2168 select WEAK_ORDERING
2171 Select this if you are using a bootloader which implements the "CMP
2172 framework" protocol (ie. YAMON) and want your kernel to make use of
2173 its ability to start secondary CPUs.
2175 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2179 bool "MIPS Coherent Processing System support"
2180 depends on SYS_SUPPORTS_MIPS_CPS && !64BIT
2183 select MIPS_CPS_PM if HOTPLUG_CPU
2186 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2187 select SYS_SUPPORTS_HOTPLUG_CPU
2188 select SYS_SUPPORTS_SMP
2189 select WEAK_ORDERING
2191 Select this if you wish to run an SMP kernel across multiple cores
2192 within a MIPS Coherent Processing System. When this option is
2193 enabled the kernel will probe for other cores and boot them with
2194 no external assistance. It is safe to enable this when hardware
2195 support is unavailable.
2211 config SB1_PASS_1_WORKAROUNDS
2213 depends on CPU_SB1_PASS_1
2216 config SB1_PASS_2_WORKAROUNDS
2218 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2221 config SB1_PASS_2_1_WORKAROUNDS
2223 depends on CPU_SB1 && CPU_SB1_PASS_2
2227 config ARCH_PHYS_ADDR_T_64BIT
2231 prompt "SmartMIPS or microMIPS ASE support"
2233 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2236 Select this if you want neither microMIPS nor SmartMIPS support
2238 config CPU_HAS_SMARTMIPS
2239 depends on SYS_SUPPORTS_SMARTMIPS
2242 SmartMIPS is a extension of the MIPS32 architecture aimed at
2243 increased security at both hardware and software level for
2244 smartcards. Enabling this option will allow proper use of the
2245 SmartMIPS instructions by Linux applications. However a kernel with
2246 this option will not work on a MIPS core without SmartMIPS core. If
2247 you don't know you probably don't have SmartMIPS and should say N
2250 config CPU_MICROMIPS
2251 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2254 When this option is enabled the kernel will be built using the
2260 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2261 depends on CPU_SUPPORTS_MSA
2262 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2264 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2265 and a set of SIMD instructions to operate on them. When this option
2266 is enabled the kernel will support allocating & switching MSA
2267 vector register contexts. If you know that your kernel will only be
2268 running on CPUs which do not support MSA or that your userland will
2269 not be making use of it then you may wish to say N here to reduce
2270 the size & complexity of your kernel.
2281 # Vectored interrupt mode is an R2 feature
2283 config CPU_MIPSR2_IRQ_VI
2287 # Extended interrupt mode is an R2 feature
2289 config CPU_MIPSR2_IRQ_EI
2294 depends on !CPU_R3000
2300 config CPU_DADDI_WORKAROUNDS
2303 config CPU_R4000_WORKAROUNDS
2305 select CPU_R4400_WORKAROUNDS
2307 config CPU_R4400_WORKAROUNDS
2311 # - Highmem only makes sense for the 32-bit kernel.
2312 # - The current highmem code will only work properly on physically indexed
2313 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2314 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2315 # moment we protect the user and offer the highmem option only on machines
2316 # where it's known to be safe. This will not offer highmem on a few systems
2317 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2318 # indexed CPUs but we're playing safe.
2319 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2320 # know they might have memory configurations that could make use of highmem
2324 bool "High Memory Support"
2325 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2327 config CPU_SUPPORTS_HIGHMEM
2330 config SYS_SUPPORTS_HIGHMEM
2333 config SYS_SUPPORTS_SMARTMIPS
2336 config SYS_SUPPORTS_MICROMIPS
2339 config SYS_SUPPORTS_MIPS16
2342 This option must be set if a kernel might be executed on a MIPS16-
2343 enabled CPU even if MIPS16 is not actually being used. In other
2344 words, it makes the kernel MIPS16-tolerant.
2346 config CPU_SUPPORTS_MSA
2349 config ARCH_FLATMEM_ENABLE
2351 depends on !NUMA && !CPU_LOONGSON2
2353 config ARCH_DISCONTIGMEM_ENABLE
2355 default y if SGI_IP27
2357 Say Y to support efficient handling of discontiguous physical memory,
2358 for architectures which are either NUMA (Non-Uniform Memory Access)
2359 or have huge holes in the physical address space for other reasons.
2360 See <file:Documentation/vm/numa> for more.
2362 config ARCH_SPARSEMEM_ENABLE
2364 select SPARSEMEM_STATIC
2368 depends on SYS_SUPPORTS_NUMA
2370 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2371 Access). This option improves performance on systems with more
2372 than two nodes; on two node systems it is generally better to
2373 leave it disabled; on single node systems disable this option
2376 config SYS_SUPPORTS_NUMA
2382 depends on NEED_MULTIPLE_NODES
2384 config HW_PERF_EVENTS
2385 bool "Enable hardware performance counter support for perf events"
2386 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2389 Enable hardware performance counter support for perf events. If
2390 disabled, perf events will use software events only.
2395 bool "Multi-Processing support"
2396 depends on SYS_SUPPORTS_SMP
2398 This enables support for systems with more than one CPU. If you have
2399 a system with only one CPU, say N. If you have a system with more
2400 than one CPU, say Y.
2402 If you say N here, the kernel will run on uni- and multiprocessor
2403 machines, but will use only one CPU of a multiprocessor machine. If
2404 you say Y here, the kernel will run on many, but not all,
2405 uniprocessor machines. On a uniprocessor machine, the kernel
2406 will run faster if you say N here.
2408 People using multiprocessor machines who say Y here should also say
2409 Y to "Enhanced Real Time Clock Support", below.
2411 See also the SMP-HOWTO available at
2412 <http://www.tldp.org/docs.html#howto>.
2414 If you don't know what to do here, say N.
2419 config SYS_SUPPORTS_MIPS_CMP
2422 config SYS_SUPPORTS_MIPS_CPS
2425 config SYS_SUPPORTS_SMP
2428 config NR_CPUS_DEFAULT_4
2431 config NR_CPUS_DEFAULT_8
2434 config NR_CPUS_DEFAULT_16
2437 config NR_CPUS_DEFAULT_32
2440 config NR_CPUS_DEFAULT_64
2444 int "Maximum number of CPUs (2-256)"
2447 default "4" if NR_CPUS_DEFAULT_4
2448 default "8" if NR_CPUS_DEFAULT_8
2449 default "16" if NR_CPUS_DEFAULT_16
2450 default "32" if NR_CPUS_DEFAULT_32
2451 default "64" if NR_CPUS_DEFAULT_64
2453 This allows you to specify the maximum number of CPUs which this
2454 kernel will support. The maximum supported value is 32 for 32-bit
2455 kernel and 64 for 64-bit kernels; the minimum value which makes
2456 sense is 1 for Qemu (useful only for kernel debugging purposes)
2457 and 2 for all others.
2459 This is purely to save memory - each supported CPU adds
2460 approximately eight kilobytes to the kernel image. For best
2461 performance should round up your number of processors to the next
2464 config MIPS_PERF_SHARED_TC_COUNTERS
2468 # Timer Interrupt Frequency Configuration
2472 prompt "Timer frequency"
2475 Allows the configuration of the timer frequency.
2478 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2481 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2484 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2487 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2490 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2493 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2496 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2500 config SYS_SUPPORTS_48HZ
2503 config SYS_SUPPORTS_100HZ
2506 config SYS_SUPPORTS_128HZ
2509 config SYS_SUPPORTS_250HZ
2512 config SYS_SUPPORTS_256HZ
2515 config SYS_SUPPORTS_1000HZ
2518 config SYS_SUPPORTS_1024HZ
2521 config SYS_SUPPORTS_ARBIT_HZ
2523 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2524 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2525 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2526 !SYS_SUPPORTS_1024HZ
2531 default 100 if HZ_100
2532 default 128 if HZ_128
2533 default 250 if HZ_250
2534 default 256 if HZ_256
2535 default 1000 if HZ_1000
2536 default 1024 if HZ_1024
2538 source "kernel/Kconfig.preempt"
2541 bool "Kexec system call"
2543 kexec is a system call that implements the ability to shutdown your
2544 current kernel, and to start another kernel. It is like a reboot
2545 but it is independent of the system firmware. And like a reboot
2546 you can start any kernel with it, not just Linux.
2548 The name comes from the similarity to the exec system call.
2550 It is an ongoing process to be certain the hardware in a machine
2551 is properly shutdown, so do not be surprised if this code does not
2552 initially work for you. As of this writing the exact hardware
2553 interface is strongly in flux, so no good recommendation can be
2557 bool "Kernel crash dumps"
2559 Generate crash dump after being started by kexec.
2560 This should be normally only set in special crash dump kernels
2561 which are loaded in the main kernel with kexec-tools into
2562 a specially reserved region and then later executed after
2563 a crash by kdump/kexec. The crash dump kernel must be compiled
2564 to a memory address not used by the main kernel or firmware using
2567 config PHYSICAL_START
2568 hex "Physical address where the kernel is loaded"
2569 default "0xffffffff84000000" if 64BIT
2570 default "0x84000000" if 32BIT
2571 depends on CRASH_DUMP
2573 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2574 If you plan to use kernel for capturing the crash dump change
2575 this value to start of the reserved region (the "X" value as
2576 specified in the "crashkernel=YM@XM" command line boot parameter
2577 passed to the panic-ed kernel).
2580 bool "Enable seccomp to safely compute untrusted bytecode"
2584 This kernel feature is useful for number crunching applications
2585 that may need to compute untrusted bytecode during their
2586 execution. By using pipes or other transports made available to
2587 the process as file descriptors supporting the read/write
2588 syscalls, it's possible to isolate those applications in
2589 their own address space using seccomp. Once seccomp is
2590 enabled via /proc/<pid>/seccomp, it cannot be disabled
2591 and the task is only allowed to execute a few safe syscalls
2592 defined by each seccomp mode.
2594 If unsure, say Y. Only embedded should say N here.
2596 config MIPS_O32_FP64_SUPPORT
2597 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2598 depends on 32BIT || MIPS32_O32
2600 When this is enabled, the kernel will support use of 64-bit floating
2601 point registers with binaries using the O32 ABI along with the
2602 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2603 32-bit MIPS systems this support is at the cost of increasing the
2604 size and complexity of the compiled FPU emulator. Thus if you are
2605 running a MIPS32 system and know that none of your userland binaries
2606 will require 64-bit floating point, you may wish to reduce the size
2607 of your kernel & potentially improve FP emulation performance by
2610 Although binutils currently supports use of this flag the details
2611 concerning its effect upon the O32 ABI in userland are still being
2612 worked on. In order to avoid userland becoming dependant upon current
2613 behaviour before the details have been finalised, this option should
2614 be considered experimental and only enabled by those working upon
2622 select OF_EARLY_FLATTREE
2630 config LOCKDEP_SUPPORT
2634 config STACKTRACE_SUPPORT
2638 source "init/Kconfig"
2640 source "kernel/Kconfig.freezer"
2642 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2650 bool "Support for PCI controller"
2651 depends on HW_HAS_PCI
2653 select NO_GENERIC_PCI_IOPORT_MAP
2655 Find out whether you have a PCI motherboard. PCI is the name of a
2656 bus system, i.e. the way the CPU talks to the other stuff inside
2657 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2661 bool "Support for HT-linked PCI"
2663 depends on CPU_LOONGSON3
2667 Loongson family machines use Hyper-Transport bus for inter-core
2668 connection and device connection. The PCI bus is a subordinate
2669 linked at HT. Choose Y for Loongson-3 based machines.
2674 source "drivers/pci/Kconfig"
2676 source "drivers/pci/pcie/Kconfig"
2679 # ISA support is now enabled via select. Too many systems still have the one
2680 # or other ISA chip on the board that users don't know about so don't expect
2681 # users to choose the right thing ...
2688 depends on HW_HAS_EISA
2690 select GENERIC_ISA_DMA
2692 The Extended Industry Standard Architecture (EISA) bus was
2693 developed as an open alternative to the IBM MicroChannel bus.
2695 The EISA bus provided some of the features of the IBM MicroChannel
2696 bus while maintaining backward compatibility with cards made for
2697 the older ISA bus. The EISA bus saw limited use between 1988 and
2698 1995 when it was made obsolete by the PCI bus.
2700 Say Y here if you are building a kernel for an EISA-based machine.
2704 source "drivers/eisa/Kconfig"
2707 bool "TURBOchannel support"
2708 depends on MACH_DECSTATION
2710 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2711 processors. TURBOchannel programming specifications are available
2713 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2715 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2716 Linux driver support status is documented at:
2717 <http://www.linux-mips.org/wiki/DECstation>
2727 select MIPS_EXTERNAL_TIMER
2735 source "drivers/pcmcia/Kconfig"
2737 source "drivers/pci/hotplug/Kconfig"
2740 tristate "RapidIO support"
2744 If you say Y here, the kernel will include drivers and
2745 infrastructure code to support RapidIO interconnect devices.
2747 source "drivers/rapidio/Kconfig"
2751 menu "Executable file formats"
2753 source "fs/Kconfig.binfmt"
2758 config MIPS32_COMPAT
2764 config SYSVIPC_COMPAT
2768 bool "Kernel support for o32 binaries"
2770 select ARCH_WANT_OLD_COMPAT_IPC
2772 select MIPS32_COMPAT
2773 select SYSVIPC_COMPAT if SYSVIPC
2775 Select this option if you want to run o32 binaries. These are pure
2776 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2777 existing binaries are in this format.
2782 bool "Kernel support for n32 binaries"
2785 select MIPS32_COMPAT
2786 select SYSVIPC_COMPAT if SYSVIPC
2788 Select this option if you want to run n32 binaries. These are
2789 64-bit binaries using 32-bit quantities for addressing and certain
2790 data that would normally be 64-bit. They are used in special
2797 default y if MIPS32_O32 || MIPS32_N32
2801 menu "Power management options"
2803 config ARCH_HIBERNATION_POSSIBLE
2805 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2807 config ARCH_SUSPEND_POSSIBLE
2809 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2811 source "kernel/power/Kconfig"
2815 config MIPS_EXTERNAL_TIMER
2818 menu "CPU Power Management"
2820 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2821 source "drivers/cpufreq/Kconfig"
2824 source "drivers/cpuidle/Kconfig"
2828 source "net/Kconfig"
2830 source "drivers/Kconfig"
2832 source "drivers/firmware/Kconfig"
2836 source "arch/mips/Kconfig.debug"
2838 source "security/Kconfig"
2840 source "crypto/Kconfig"
2842 source "lib/Kconfig"
2844 source "arch/mips/kvm/Kconfig"