11 config RWSEM_GENERIC_SPINLOCK
14 config RWSEM_XCHGADD_ALGORITHM
20 select HAVE_ARCH_TRACEHOOK
21 select HAVE_DYNAMIC_FTRACE
22 select HAVE_FTRACE_MCOUNT_RECORD
23 select HAVE_FUNCTION_GRAPH_TRACER
24 select HAVE_FUNCTION_TRACER
25 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
28 select HAVE_KERNEL_GZIP if RAMKERNEL
29 select HAVE_KERNEL_BZIP2 if RAMKERNEL
30 select HAVE_KERNEL_LZMA if RAMKERNEL
31 select HAVE_KERNEL_LZO if RAMKERNEL
33 select HAVE_PERF_EVENTS
34 select ARCH_HAVE_CUSTOM_GPIO_H
35 select ARCH_WANT_OPTIONAL_GPIOLIB
37 select ARCH_WANT_IPC_PARSE_VERSION
38 select HAVE_GENERIC_HARDIRQS
39 select GENERIC_ATOMIC64
40 select GENERIC_IRQ_PROBE
41 select IRQ_PER_CPU if SMP
42 select USE_GENERIC_SMP_HELPERS if SMP
43 select HAVE_NMI_WATCHDOG if NMI_WATCHDOG
44 select GENERIC_SMP_IDLE_THREAD
45 select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS
46 select HAVE_MOD_ARCH_SPECIFIC
47 select MODULES_USE_ELF_RELA
48 select GENERIC_KERNEL_THREAD
49 select GENERIC_KERNEL_EXECVE
64 config FORCE_MAX_ZONEORDER
68 config GENERIC_CALIBRATE_DELAY
71 config LOCKDEP_SUPPORT
74 config STACKTRACE_SUPPORT
77 config TRACE_IRQFLAGS_SUPPORT
82 source "kernel/Kconfig.preempt"
84 source "kernel/Kconfig.freezer"
86 menu "Blackfin Processor Options"
88 comment "Processor and Board Settings"
97 BF512 Processor Support.
102 BF514 Processor Support.
107 BF516 Processor Support.
112 BF518 Processor Support.
117 BF522 Processor Support.
122 BF523 Processor Support.
127 BF524 Processor Support.
132 BF525 Processor Support.
137 BF526 Processor Support.
142 BF527 Processor Support.
147 BF531 Processor Support.
152 BF532 Processor Support.
157 BF533 Processor Support.
162 BF534 Processor Support.
167 BF536 Processor Support.
172 BF537 Processor Support.
177 BF538 Processor Support.
182 BF539 Processor Support.
187 BF542 Processor Support.
192 BF542 Processor Support.
197 BF544 Processor Support.
202 BF544 Processor Support.
207 BF547 Processor Support.
212 BF547 Processor Support.
217 BF548 Processor Support.
222 BF548 Processor Support.
227 BF549 Processor Support.
232 BF549 Processor Support.
237 BF561 Processor Support.
243 BF609 Processor Support.
249 select TICKSOURCE_CORETMR
250 bool "Symmetric multi-processing support"
252 This enables support for systems with more than one CPU,
253 like the dual core BF561. If you have a system with only one
254 CPU, say N. If you have a system with more than one CPU, say Y.
256 If you don't know what to do here, say N.
264 bool "Support for hot-pluggable CPUs"
265 depends on SMP && HOTPLUG
270 default 0 if (BF51x || BF52x || (BF54x && !BF54xM)) || BF60x
271 default 2 if (BF537 || BF536 || BF534)
272 default 3 if (BF561 || BF533 || BF532 || BF531 || BF54xM)
273 default 4 if (BF538 || BF539)
277 default 2 if (BF51x || BF52x || (BF54x && !BF54xM)) || BF60x
278 default 3 if (BF537 || BF536 || BF534 || BF54xM)
279 default 5 if (BF561 || BF538 || BF539)
280 default 6 if (BF533 || BF532 || BF531)
284 default BF_REV_0_0 if (BF51x || BF52x || BF60x)
285 default BF_REV_0_2 if (BF534 || BF536 || BF537 || (BF54x && !BF54xM))
286 default BF_REV_0_3 if (BF531 || BF532 || BF533 || BF54xM || BF561)
290 depends on (BF51x || BF52x || (BF54x && !BF54xM) || BF60x)
294 depends on (BF51x || BF52x || (BF54x && !BF54xM))
298 depends on (BF51x || BF52x || BF537 || BF536 || BF534 || (BF54x && !BF54xM))
302 depends on (BF54xM || BF561 || BF537 || BF536 || BF534 || BF533 || BF532 || BF531)
306 depends on (BF561 || BF533 || BF532 || BF531 || BF538 || BF539 || BF54x)
310 depends on (BF561 || BF533 || BF532 || BF531 || BF538 || BF539)
314 depends on (BF533 || BF532 || BF531)
326 depends on (BF531 || BF532 || BF533 || BF534 || BF536 || BF537)
329 config MEM_MT48LC64M4A2FB_7E
331 depends on (BFIN533_STAMP)
334 config MEM_MT48LC16M16A2TG_75
336 depends on (BFIN533_EZKIT || BFIN561_EZKIT \
337 || BFIN533_BLUETECHNIX_CM || BFIN537_BLUETECHNIX_CM_E \
338 || BFIN537_BLUETECHNIX_CM_U || H8606_HVSISTEMAS \
339 || BFIN527_BLUETECHNIX_CM)
342 config MEM_MT48LC32M8A2_75
344 depends on (BFIN518F_EZBRD || BFIN537_STAMP || PNAV10 || BFIN538_EZKIT)
347 config MEM_MT48LC8M32B2B5_7
349 depends on (BFIN561_BLUETECHNIX_CM)
352 config MEM_MT48LC32M16A2TG_75
354 depends on (BFIN527_EZKIT || BFIN527_EZKIT_V2 || BFIN532_IP0X || BLACKSTAMP || BFIN527_AD7160EVAL)
357 config MEM_MT48H32M16LFCJ_75
359 depends on (BFIN526_EZBRD)
362 config MEM_MT47H64M16
364 depends on (BFIN609_EZKIT)
367 source "arch/blackfin/mach-bf518/Kconfig"
368 source "arch/blackfin/mach-bf527/Kconfig"
369 source "arch/blackfin/mach-bf533/Kconfig"
370 source "arch/blackfin/mach-bf561/Kconfig"
371 source "arch/blackfin/mach-bf537/Kconfig"
372 source "arch/blackfin/mach-bf538/Kconfig"
373 source "arch/blackfin/mach-bf548/Kconfig"
374 source "arch/blackfin/mach-bf609/Kconfig"
376 menu "Board customizations"
379 bool "Default bootloader kernel arguments"
382 string "Initial kernel command string"
383 depends on CMDLINE_BOOL
384 default "console=ttyBF0,57600"
386 If you don't have a boot loader capable of passing a command line string
387 to the kernel, you may specify one here. As a minimum, you should specify
388 the memory size and the root device (e.g., mem=8M, root=/dev/nfs).
391 hex "Kernel load address for booting"
393 range 0x1000 0x20000000
395 This option allows you to set the load address of the kernel.
396 This can be useful if you are on a board which has a small amount
397 of memory or you wish to reserve some memory at the beginning of
400 Note that you need to keep this value above 4k (0x1000) as this
401 memory region is used to capture NULL pointer references as well
402 as some core kernel functions.
404 config PHY_RAM_BASE_ADDRESS
405 hex "Physical RAM Base"
408 set BF609 FPGA physical SRAM base address
411 hex "Kernel ROM Base"
414 range 0x20000000 0x20400000 if !(BF54x || BF561 || BF60x)
415 range 0x20000000 0x30000000 if (BF54x || BF561)
416 range 0xB0000000 0xC0000000 if (BF60x)
418 Make sure your ROM base does not include any file-header
419 information that is prepended to the kernel.
421 For example, the bootable U-Boot format (created with
422 mkimage) has a 64 byte header (0x40). So while the image
423 you write to flash might start at say 0x20080000, you have
424 to add 0x40 to get the kernel's ROM base as it will come
427 comment "Clock/PLL Setup"
430 int "Frequency of the crystal on the board in Hz"
431 default "10000000" if BFIN532_IP0X
432 default "11059200" if BFIN533_STAMP
433 default "24576000" if PNAV10
434 default "25000000" # most people use this
435 default "27000000" if BFIN533_EZKIT
436 default "30000000" if BFIN561_EZKIT
437 default "24000000" if BFIN527_AD7160EVAL
439 The frequency of CLKIN crystal oscillator on the board in Hz.
440 Warning: This value should match the crystal on the board. Otherwise,
441 peripherals won't work properly.
443 config BFIN_KERNEL_CLOCK
444 bool "Re-program Clocks while Kernel boots?"
447 This option decides if kernel clocks are re-programed from the
448 bootloader settings. If the clocks are not set, the SDRAM settings
449 are also not changed, and the Bootloader does 100% of the hardware
454 depends on BFIN_KERNEL_CLOCK && (!BF60x)
459 depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS)
462 If this is set the clock will be divided by 2, before it goes to the PLL.
466 depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS)
468 default "22" if BFIN533_EZKIT
469 default "45" if BFIN533_STAMP
470 default "20" if (BFIN537_STAMP || BFIN527_EZKIT || BFIN527_EZKIT_V2 || BFIN548_EZKIT || BFIN548_BLUETECHNIX_CM || BFIN538_EZKIT)
471 default "22" if BFIN533_BLUETECHNIX_CM
472 default "20" if (BFIN537_BLUETECHNIX_CM_E || BFIN537_BLUETECHNIX_CM_U || BFIN527_BLUETECHNIX_CM || BFIN561_BLUETECHNIX_CM)
473 default "20" if (BFIN561_EZKIT || BF609)
474 default "16" if (H8606_HVSISTEMAS || BLACKSTAMP || BFIN526_EZBRD || BFIN518F_EZBRD)
475 default "25" if BFIN527_AD7160EVAL
477 This controls the frequency of the on-chip PLL. This can be between 1 and 64.
478 PLL Frequency = (Crystal Frequency) * (this setting)
481 prompt "Core Clock Divider"
482 depends on BFIN_KERNEL_CLOCK
485 This sets the frequency of the core. It can be 1, 2, 4 or 8
486 Core Frequency = (PLL frequency) / (this setting)
502 int "System Clock Divider"
503 depends on BFIN_KERNEL_CLOCK
507 This sets the frequency of the system clock (including SDRAM or DDR) on
508 !BF60x else it set the clock for system buses and provides the
509 source from which SCLK0 and SCLK1 are derived.
510 This can be between 1 and 15
511 System Clock = (PLL frequency) / (this setting)
514 int "System Clock0 Divider"
515 depends on BFIN_KERNEL_CLOCK && BF60x
519 This sets the frequency of the system clock0 for PVP and all other
520 peripherals not clocked by SCLK1.
521 This can be between 1 and 15
522 System Clock0 = (System Clock) / (this setting)
525 int "System Clock1 Divider"
526 depends on BFIN_KERNEL_CLOCK && BF60x
530 This sets the frequency of the system clock1 (including SPORT, SPI and ACM).
531 This can be between 1 and 15
532 System Clock1 = (System Clock) / (this setting)
535 int "DDR Clock Divider"
536 depends on BFIN_KERNEL_CLOCK && BF60x
540 This sets the frequency of the DDR memory.
541 This can be between 1 and 15
542 DDR Clock = (PLL frequency) / (this setting)
545 prompt "DDR SDRAM Chip Type"
546 depends on BFIN_KERNEL_CLOCK
548 default MEM_MT46V32M16_5B
550 config MEM_MT46V32M16_6T
553 config MEM_MT46V32M16_5B
558 prompt "DDR/SDRAM Timing"
559 depends on BFIN_KERNEL_CLOCK && !BF60x
560 default BFIN_KERNEL_CLOCK_MEMINIT_CALC
562 This option allows you to specify Blackfin SDRAM/DDR Timing parameters
563 The calculated SDRAM timing parameters may not be 100%
564 accurate - This option is therefore marked experimental.
566 config BFIN_KERNEL_CLOCK_MEMINIT_CALC
567 bool "Calculate Timings (EXPERIMENTAL)"
568 depends on EXPERIMENTAL
570 config BFIN_KERNEL_CLOCK_MEMINIT_SPEC
571 bool "Provide accurate Timings based on target SCLK"
573 Please consult the Blackfin Hardware Reference Manuals as well
574 as the memory device datasheet.
575 http://docs.blackfin.uclinux.org/doku.php?id=bfin:sdram
578 menu "Memory Init Control"
579 depends on BFIN_KERNEL_CLOCK_MEMINIT_SPEC
596 config MEM_EBIU_DDRQUE
613 # Max & Min Speeds for various Chips
617 default 400000000 if BF512
618 default 400000000 if BF514
619 default 400000000 if BF516
620 default 400000000 if BF518
621 default 400000000 if BF522
622 default 600000000 if BF523
623 default 400000000 if BF524
624 default 600000000 if BF525
625 default 400000000 if BF526
626 default 600000000 if BF527
627 default 400000000 if BF531
628 default 400000000 if BF532
629 default 750000000 if BF533
630 default 500000000 if BF534
631 default 400000000 if BF536
632 default 600000000 if BF537
633 default 533333333 if BF538
634 default 533333333 if BF539
635 default 600000000 if BF542
636 default 533333333 if BF544
637 default 600000000 if BF547
638 default 600000000 if BF548
639 default 533333333 if BF549
640 default 600000000 if BF561
641 default 800000000 if BF609
649 default 200000000 if BF609
656 comment "Kernel Timer/Scheduler"
658 source kernel/Kconfig.hz
660 config SET_GENERIC_CLOCKEVENTS
661 bool "Generic clock events"
663 select GENERIC_CLOCKEVENTS
665 menu "Clock event device"
666 depends on GENERIC_CLOCKEVENTS
667 config TICKSOURCE_GPTMR0
672 config TICKSOURCE_CORETMR
678 depends on GENERIC_CLOCKEVENTS
679 config CYCLES_CLOCKSOURCE
682 depends on !BFIN_SCRATCH_REG_CYCLES
685 If you say Y here, you will enable support for using the 'cycles'
686 registers as a clock source. Doing so means you will be unable to
687 safely write to the 'cycles' register during runtime. You will
688 still be able to read it (such as for performance monitoring), but
689 writing the registers will most likely crash the kernel.
691 config GPTMR0_CLOCKSOURCE
694 depends on !TICKSOURCE_GPTMR0
700 prompt "Blackfin Exception Scratch Register"
701 default BFIN_SCRATCH_REG_RETN
703 Select the resource to reserve for the Exception handler:
704 - RETN: Non-Maskable Interrupt (NMI)
705 - RETE: Exception Return (JTAG/ICE)
706 - CYCLES: Performance counter
708 If you are unsure, please select "RETN".
710 config BFIN_SCRATCH_REG_RETN
713 Use the RETN register in the Blackfin exception handler
714 as a stack scratch register. This means you cannot
715 safely use NMI on the Blackfin while running Linux, but
716 you can debug the system with a JTAG ICE and use the
717 CYCLES performance registers.
719 If you are unsure, please select "RETN".
721 config BFIN_SCRATCH_REG_RETE
724 Use the RETE register in the Blackfin exception handler
725 as a stack scratch register. This means you cannot
726 safely use a JTAG ICE while debugging a Blackfin board,
727 but you can safely use the CYCLES performance registers
730 If you are unsure, please select "RETN".
732 config BFIN_SCRATCH_REG_CYCLES
735 Use the CYCLES register in the Blackfin exception handler
736 as a stack scratch register. This means you cannot
737 safely use the CYCLES performance registers on a Blackfin
738 board at anytime, but you can debug the system with a JTAG
741 If you are unsure, please select "RETN".
748 menu "Blackfin Kernel Optimizations"
750 comment "Memory Optimizations"
753 bool "Locate interrupt entry code in L1 Memory"
757 If enabled, interrupt entry code (STORE/RESTORE CONTEXT) is linked
758 into L1 instruction memory. (less latency)
760 config EXCPT_IRQ_SYSC_L1
761 bool "Locate entire ASM lowlevel exception / interrupt - Syscall and CPLB handler code in L1 Memory"
765 If enabled, the entire ASM lowlevel exception and interrupt entry code
766 (STORE/RESTORE CONTEXT) is linked into L1 instruction memory.
770 bool "Locate frequently called do_irq dispatcher function in L1 Memory"
774 If enabled, the frequently called do_irq dispatcher function is linked
775 into L1 instruction memory. (less latency)
777 config CORE_TIMER_IRQ_L1
778 bool "Locate frequently called timer_interrupt() function in L1 Memory"
782 If enabled, the frequently called timer_interrupt() function is linked
783 into L1 instruction memory. (less latency)
786 bool "Locate frequently idle function in L1 Memory"
790 If enabled, the frequently called idle function is linked
791 into L1 instruction memory. (less latency)
794 bool "Locate kernel schedule function in L1 Memory"
798 If enabled, the frequently called kernel schedule is linked
799 into L1 instruction memory. (less latency)
801 config ARITHMETIC_OPS_L1
802 bool "Locate kernel owned arithmetic functions in L1 Memory"
806 If enabled, arithmetic functions are linked
807 into L1 instruction memory. (less latency)
810 bool "Locate access_ok function in L1 Memory"
814 If enabled, the access_ok function is linked
815 into L1 instruction memory. (less latency)
818 bool "Locate memset function in L1 Memory"
822 If enabled, the memset function is linked
823 into L1 instruction memory. (less latency)
826 bool "Locate memcpy function in L1 Memory"
830 If enabled, the memcpy function is linked
831 into L1 instruction memory. (less latency)
834 bool "locate strcmp function in L1 Memory"
838 If enabled, the strcmp function is linked
839 into L1 instruction memory (less latency).
842 bool "locate strncmp function in L1 Memory"
846 If enabled, the strncmp function is linked
847 into L1 instruction memory (less latency).
850 bool "locate strcpy function in L1 Memory"
854 If enabled, the strcpy function is linked
855 into L1 instruction memory (less latency).
858 bool "locate strncpy function in L1 Memory"
862 If enabled, the strncpy function is linked
863 into L1 instruction memory (less latency).
865 config SYS_BFIN_SPINLOCK_L1
866 bool "Locate sys_bfin_spinlock function in L1 Memory"
870 If enabled, sys_bfin_spinlock function is linked
871 into L1 instruction memory. (less latency)
873 config IP_CHECKSUM_L1
874 bool "Locate IP Checksum function in L1 Memory"
878 If enabled, the IP Checksum function is linked
879 into L1 instruction memory. (less latency)
881 config CACHELINE_ALIGNED_L1
882 bool "Locate cacheline_aligned data to L1 Data Memory"
885 depends on !SMP && !BF531 && !CRC32
887 If enabled, cacheline_aligned data is linked
888 into L1 data memory. (less latency)
890 config SYSCALL_TAB_L1
891 bool "Locate Syscall Table L1 Data Memory"
893 depends on !SMP && !BF531
895 If enabled, the Syscall LUT is linked
896 into L1 data memory. (less latency)
898 config CPLB_SWITCH_TAB_L1
899 bool "Locate CPLB Switch Tables L1 Data Memory"
901 depends on !SMP && !BF531
903 If enabled, the CPLB Switch Tables are linked
904 into L1 data memory. (less latency)
906 config ICACHE_FLUSH_L1
907 bool "Locate icache flush funcs in L1 Inst Memory"
910 If enabled, the Blackfin icache flushing functions are linked
911 into L1 instruction memory.
913 Note that this might be required to address anomalies, but
914 these functions are pretty small, so it shouldn't be too bad.
915 If you are using a processor affected by an anomaly, the build
916 system will double check for you and prevent it.
918 config DCACHE_FLUSH_L1
919 bool "Locate dcache flush funcs in L1 Inst Memory"
923 If enabled, the Blackfin dcache flushing functions are linked
924 into L1 instruction memory.
927 bool "Support locating application stack in L1 Scratch Memory"
931 If enabled the application stack can be located in L1
932 scratch memory (less latency).
934 Currently only works with FLAT binaries.
936 config EXCEPTION_L1_SCRATCH
937 bool "Locate exception stack in L1 Scratch Memory"
939 depends on !SMP && !APP_STACK_L1
941 Whenever an exception occurs, use the L1 Scratch memory for
942 stack storage. You cannot place the stacks of FLAT binaries
943 in L1 when using this option.
945 If you don't use L1 Scratch, then you should say Y here.
947 comment "Speed Optimizations"
948 config BFIN_INS_LOWOVERHEAD
949 bool "ins[bwl] low overhead, higher interrupt latency"
953 Reads on the Blackfin are speculative. In Blackfin terms, this means
954 they can be interrupted at any time (even after they have been issued
955 on to the external bus), and re-issued after the interrupt occurs.
956 For memory - this is not a big deal, since memory does not change if
959 If a FIFO is sitting on the end of the read, it will see two reads,
960 when the core only sees one since the FIFO receives both the read
961 which is cancelled (and not delivered to the core) and the one which
962 is re-issued (which is delivered to the core).
964 To solve this, interrupts are turned off before reads occur to
965 I/O space. This option controls which the overhead/latency of
966 controlling interrupts during this time
967 "n" turns interrupts off every read
968 (higher overhead, but lower interrupt latency)
969 "y" turns interrupts off every loop
970 (low overhead, but longer interrupt latency)
972 default behavior is to leave this set to on (type "Y"). If you are experiencing
973 interrupt latency issues, it is safe and OK to turn this off.
978 prompt "Kernel executes from"
980 Choose the memory type that the kernel will be running in.
985 The kernel will be resident in RAM when running.
990 The kernel will be resident in FLASH/ROM when running.
994 # Common code uses "ROMKERNEL" or "XIP_KERNEL", so define both
1002 config BFIN_GPTIMERS
1003 tristate "Enable Blackfin General Purpose Timers API"
1006 Enable support for the General Purpose Timers API. If you
1009 To compile this driver as a module, choose M here: the module
1010 will be called gptimers.
1013 prompt "Uncached DMA region"
1014 default DMA_UNCACHED_1M
1015 config DMA_UNCACHED_32M
1016 bool "Enable 32M DMA region"
1017 config DMA_UNCACHED_16M
1018 bool "Enable 16M DMA region"
1019 config DMA_UNCACHED_8M
1020 bool "Enable 8M DMA region"
1021 config DMA_UNCACHED_4M
1022 bool "Enable 4M DMA region"
1023 config DMA_UNCACHED_2M
1024 bool "Enable 2M DMA region"
1025 config DMA_UNCACHED_1M
1026 bool "Enable 1M DMA region"
1027 config DMA_UNCACHED_512K
1028 bool "Enable 512K DMA region"
1029 config DMA_UNCACHED_256K
1030 bool "Enable 256K DMA region"
1031 config DMA_UNCACHED_128K
1032 bool "Enable 128K DMA region"
1033 config DMA_UNCACHED_NONE
1034 bool "Disable DMA region"
1038 comment "Cache Support"
1041 bool "Enable ICACHE"
1043 config BFIN_EXTMEM_ICACHEABLE
1044 bool "Enable ICACHE for external memory"
1045 depends on BFIN_ICACHE
1047 config BFIN_L2_ICACHEABLE
1048 bool "Enable ICACHE for L2 SRAM"
1049 depends on BFIN_ICACHE
1050 depends on (BF54x || BF561 || BF60x) && !SMP
1054 bool "Enable DCACHE"
1056 config BFIN_DCACHE_BANKA
1057 bool "Enable only 16k BankA DCACHE - BankB is SRAM"
1058 depends on BFIN_DCACHE && !BF531
1060 config BFIN_EXTMEM_DCACHEABLE
1061 bool "Enable DCACHE for external memory"
1062 depends on BFIN_DCACHE
1065 prompt "External memory DCACHE policy"
1066 depends on BFIN_EXTMEM_DCACHEABLE
1067 default BFIN_EXTMEM_WRITEBACK if !SMP
1068 default BFIN_EXTMEM_WRITETHROUGH if SMP
1069 config BFIN_EXTMEM_WRITEBACK
1074 Cached data will be written back to SDRAM only when needed.
1075 This can give a nice increase in performance, but beware of
1076 broken drivers that do not properly invalidate/flush their
1079 Write Through Policy:
1080 Cached data will always be written back to SDRAM when the
1081 cache is updated. This is a completely safe setting, but
1082 performance is worse than Write Back.
1084 If you are unsure of the options and you want to be safe,
1085 then go with Write Through.
1087 config BFIN_EXTMEM_WRITETHROUGH
1088 bool "Write through"
1091 Cached data will be written back to SDRAM only when needed.
1092 This can give a nice increase in performance, but beware of
1093 broken drivers that do not properly invalidate/flush their
1096 Write Through Policy:
1097 Cached data will always be written back to SDRAM when the
1098 cache is updated. This is a completely safe setting, but
1099 performance is worse than Write Back.
1101 If you are unsure of the options and you want to be safe,
1102 then go with Write Through.
1106 config BFIN_L2_DCACHEABLE
1107 bool "Enable DCACHE for L2 SRAM"
1108 depends on BFIN_DCACHE
1109 depends on (BF54x || BF561 || BF60x) && !SMP
1112 prompt "L2 SRAM DCACHE policy"
1113 depends on BFIN_L2_DCACHEABLE
1114 default BFIN_L2_WRITEBACK
1115 config BFIN_L2_WRITEBACK
1118 config BFIN_L2_WRITETHROUGH
1119 bool "Write through"
1123 comment "Memory Protection Unit"
1125 bool "Enable the memory protection unit (EXPERIMENTAL)"
1128 Use the processor's MPU to protect applications from accessing
1129 memory they do not own. This comes at a performance penalty
1130 and is recommended only for debugging.
1132 comment "Asynchronous Memory Configuration"
1134 menu "EBIU_AMGCTL Global Control"
1137 bool "Enable CLKOUT"
1141 bool "DMA has priority over core for ext. accesses"
1146 bool "Bank 0 16 bit packing enable"
1151 bool "Bank 1 16 bit packing enable"
1156 bool "Bank 2 16 bit packing enable"
1161 bool "Bank 3 16 bit packing enable"
1165 prompt "Enable Asynchronous Memory Banks"
1169 bool "Disable All Banks"
1172 bool "Enable Bank 0"
1174 config C_AMBEN_B0_B1
1175 bool "Enable Bank 0 & 1"
1177 config C_AMBEN_B0_B1_B2
1178 bool "Enable Bank 0 & 1 & 2"
1181 bool "Enable All Banks"
1185 menu "EBIU_AMBCTL Control"
1188 hex "Bank 0 (AMBCTL0.L)"
1191 These are the low 16 bits of the EBIU_AMBCTL0 MMR which are
1192 used to control the Asynchronous Memory Bank 0 settings.
1195 hex "Bank 1 (AMBCTL0.H)"
1197 default 0x5558 if BF54x
1199 These are the high 16 bits of the EBIU_AMBCTL0 MMR which are
1200 used to control the Asynchronous Memory Bank 1 settings.
1203 hex "Bank 2 (AMBCTL1.L)"
1206 These are the low 16 bits of the EBIU_AMBCTL1 MMR which are
1207 used to control the Asynchronous Memory Bank 2 settings.
1210 hex "Bank 3 (AMBCTL1.H)"
1213 These are the high 16 bits of the EBIU_AMBCTL1 MMR which are
1214 used to control the Asynchronous Memory Bank 3 settings.
1218 config EBIU_MBSCTLVAL
1219 hex "EBIU Bank Select Control Register"
1224 hex "Flash Memory Mode Control Register"
1229 hex "Flash Memory Bank Control Register"
1234 #############################################################################
1235 menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
1241 Support for PCI bus.
1243 source "drivers/pci/Kconfig"
1245 source "drivers/pcmcia/Kconfig"
1247 source "drivers/pci/hotplug/Kconfig"
1251 menu "Executable file formats"
1253 source "fs/Kconfig.binfmt"
1257 menu "Power management options"
1259 source "kernel/power/Kconfig"
1261 config ARCH_SUSPEND_POSSIBLE
1265 prompt "Standby Power Saving Mode"
1266 depends on PM && !BF60x
1267 default PM_BFIN_SLEEP_DEEPER
1268 config PM_BFIN_SLEEP_DEEPER
1271 Sleep "Deeper" Mode (High Power Savings) - This mode reduces dynamic
1272 power dissipation by disabling the clock to the processor core (CCLK).
1273 Furthermore, Standby sets the internal power supply voltage (VDDINT)
1274 to 0.85 V to provide the greatest power savings, while preserving the
1276 The PLL and system clock (SCLK) continue to operate at a very low
1277 frequency of about 3.3 MHz. To preserve data integrity in the SDRAM,
1278 the SDRAM is put into Self Refresh Mode. Typically an external event
1279 such as GPIO interrupt or RTC activity wakes up the processor.
1280 Various Peripherals such as UART, SPORT, PPI may not function as
1281 normal during Sleep Deeper, due to the reduced SCLK frequency.
1282 When in the sleep mode, system DMA access to L1 memory is not supported.
1284 If unsure, select "Sleep Deeper".
1286 config PM_BFIN_SLEEP
1289 Sleep Mode (High Power Savings) - The sleep mode reduces power
1290 dissipation by disabling the clock to the processor core (CCLK).
1291 The PLL and system clock (SCLK), however, continue to operate in
1292 this mode. Typically an external event or RTC activity will wake
1293 up the processor. When in the sleep mode, system DMA access to L1
1294 memory is not supported.
1296 If unsure, select "Sleep Deeper".
1299 comment "Possible Suspend Mem / Hibernate Wake-Up Sources"
1302 config PM_BFIN_WAKE_PH6
1303 bool "Allow Wake-Up from on-chip PHY or PH6 GP"
1304 depends on PM && (BF51x || BF52x || BF534 || BF536 || BF537)
1307 Enable PHY and PH6 GP Wake-Up (Voltage Regulator Power-Up)
1309 config PM_BFIN_WAKE_GP
1310 bool "Allow Wake-Up from GPIOs"
1311 depends on PM && BF54x
1314 Enable General-Purpose Wake-Up (Voltage Regulator Power-Up)
1315 (all processors, except ADSP-BF549). This option sets
1316 the general-purpose wake-up enable (GPWE) control bit to enable
1317 wake-up upon detection of an active low signal on the /GPW (PH7) pin.
1318 On ADSP-BF549 this option enables the same functionality on the
1319 /MRXON pin also PH7.
1321 config PM_BFIN_WAKE_PA15
1322 bool "Allow Wake-Up from PA15"
1323 depends on PM && BF60x
1328 config PM_BFIN_WAKE_PA15_POL
1329 int "Wake-up priority"
1330 depends on PM_BFIN_WAKE_PA15
1333 Wake-Up priority 0(low) 1(high)
1335 config PM_BFIN_WAKE_PB15
1336 bool "Allow Wake-Up from PB15"
1337 depends on PM && BF60x
1342 config PM_BFIN_WAKE_PB15_POL
1343 int "Wake-up priority"
1344 depends on PM_BFIN_WAKE_PB15
1347 Wake-Up priority 0(low) 1(high)
1349 config PM_BFIN_WAKE_PC15
1350 bool "Allow Wake-Up from PC15"
1351 depends on PM && BF60x
1356 config PM_BFIN_WAKE_PC15_POL
1357 int "Wake-up priority"
1358 depends on PM_BFIN_WAKE_PC15
1361 Wake-Up priority 0(low) 1(high)
1363 config PM_BFIN_WAKE_PD06
1364 bool "Allow Wake-Up from PD06(ETH0_PHYINT)"
1365 depends on PM && BF60x
1368 Enable PD06(ETH0_PHYINT) Wake-up
1370 config PM_BFIN_WAKE_PD06_POL
1371 int "Wake-up priority"
1372 depends on PM_BFIN_WAKE_PD06
1375 Wake-Up priority 0(low) 1(high)
1377 config PM_BFIN_WAKE_PE12
1378 bool "Allow Wake-Up from PE12(ETH1_PHYINT, PUSH BUTTON)"
1379 depends on PM && BF60x
1382 Enable PE12(ETH1_PHYINT, PUSH BUTTON) Wake-up
1384 config PM_BFIN_WAKE_PE12_POL
1385 int "Wake-up priority"
1386 depends on PM_BFIN_WAKE_PE12
1389 Wake-Up priority 0(low) 1(high)
1391 config PM_BFIN_WAKE_PG04
1392 bool "Allow Wake-Up from PG04(CAN0_RX)"
1393 depends on PM && BF60x
1396 Enable PG04(CAN0_RX) Wake-up
1398 config PM_BFIN_WAKE_PG04_POL
1399 int "Wake-up priority"
1400 depends on PM_BFIN_WAKE_PG04
1403 Wake-Up priority 0(low) 1(high)
1405 config PM_BFIN_WAKE_PG13
1406 bool "Allow Wake-Up from PG13"
1407 depends on PM && BF60x
1412 config PM_BFIN_WAKE_PG13_POL
1413 int "Wake-up priority"
1414 depends on PM_BFIN_WAKE_PG13
1417 Wake-Up priority 0(low) 1(high)
1419 config PM_BFIN_WAKE_USB
1420 bool "Allow Wake-Up from (USB)"
1421 depends on PM && BF60x
1424 Enable (USB) Wake-up
1426 config PM_BFIN_WAKE_USB_POL
1427 int "Wake-up priority"
1428 depends on PM_BFIN_WAKE_USB
1431 Wake-Up priority 0(low) 1(high)
1435 menu "CPU Frequency scaling"
1437 source "drivers/cpufreq/Kconfig"
1439 config BFIN_CPU_FREQ
1442 select CPU_FREQ_TABLE
1446 bool "CPU Voltage scaling"
1447 depends on EXPERIMENTAL
1451 Say Y here if you want CPU voltage scaling according to the CPU frequency.
1452 This option violates the PLL BYPASS recommendation in the Blackfin Processor
1453 manuals. There is a theoretical risk that during VDDINT transitions
1458 source "net/Kconfig"
1460 source "drivers/Kconfig"
1462 source "drivers/firmware/Kconfig"
1466 source "arch/blackfin/Kconfig.debug"
1468 source "security/Kconfig"
1470 source "crypto/Kconfig"
1472 source "lib/Kconfig"