1 # SPDX-License-Identifier: GPL-2.0
8 config RWSEM_GENERIC_SPINLOCK
11 config RWSEM_XCHGADD_ALGORITHM
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_DYNAMIC_FTRACE
19 select HAVE_FTRACE_MCOUNT_RECORD
20 select HAVE_FUNCTION_GRAPH_TRACER
21 select HAVE_FUNCTION_TRACER
23 select HAVE_KERNEL_GZIP if RAMKERNEL
24 select HAVE_KERNEL_BZIP2 if RAMKERNEL
25 select HAVE_KERNEL_LZMA if RAMKERNEL
26 select HAVE_KERNEL_LZO if RAMKERNEL
28 select HAVE_PERF_EVENTS
29 select ARCH_HAVE_CUSTOM_GPIO_H
32 select HAVE_UNDERSCORE_SYMBOL_PREFIX
34 select ARCH_WANT_IPC_PARSE_VERSION
35 select GENERIC_ATOMIC64
36 select GENERIC_IRQ_PROBE
37 select GENERIC_IRQ_SHOW
38 select HAVE_NMI_WATCHDOG if NMI_WATCHDOG
39 select GENERIC_SMP_IDLE_THREAD
40 select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS
41 select HAVE_MOD_ARCH_SPECIFIC
42 select MODULES_USE_ELF_RELA
43 select HAVE_DEBUG_STACKOVERFLOW
45 select ARCH_NO_COHERENT_DMA_MMAP
57 config FORCE_MAX_ZONEORDER
61 config GENERIC_CALIBRATE_DELAY
64 config LOCKDEP_SUPPORT
67 config STACKTRACE_SUPPORT
70 config TRACE_IRQFLAGS_SUPPORT
75 source "kernel/Kconfig.preempt"
77 source "kernel/Kconfig.freezer"
79 menu "Blackfin Processor Options"
81 comment "Processor and Board Settings"
90 BF512 Processor Support.
95 BF514 Processor Support.
100 BF516 Processor Support.
105 BF518 Processor Support.
110 BF522 Processor Support.
115 BF523 Processor Support.
120 BF524 Processor Support.
125 BF525 Processor Support.
130 BF526 Processor Support.
135 BF527 Processor Support.
140 BF531 Processor Support.
145 BF532 Processor Support.
150 BF533 Processor Support.
155 BF534 Processor Support.
160 BF536 Processor Support.
165 BF537 Processor Support.
170 BF538 Processor Support.
175 BF539 Processor Support.
180 BF542 Processor Support.
185 BF542 Processor Support.
190 BF544 Processor Support.
195 BF544 Processor Support.
200 BF547 Processor Support.
205 BF547 Processor Support.
210 BF548 Processor Support.
215 BF548 Processor Support.
220 BF549 Processor Support.
225 BF549 Processor Support.
230 BF561 Processor Support.
236 BF609 Processor Support.
242 select TICKSOURCE_CORETMR
243 bool "Symmetric multi-processing support"
245 This enables support for systems with more than one CPU,
246 like the dual core BF561. If you have a system with only one
247 CPU, say N. If you have a system with more than one CPU, say Y.
249 If you don't know what to do here, say N.
257 bool "Support for hot-pluggable CPUs"
263 default 0 if (BF51x || BF52x || (BF54x && !BF54xM)) || BF60x
264 default 2 if (BF537 || BF536 || BF534)
265 default 3 if (BF561 || BF533 || BF532 || BF531 || BF54xM)
266 default 4 if (BF538 || BF539)
270 default 2 if (BF51x || BF52x || (BF54x && !BF54xM)) || BF60x
271 default 3 if (BF537 || BF536 || BF534 || BF54xM)
272 default 5 if (BF561 || BF538 || BF539)
273 default 6 if (BF533 || BF532 || BF531)
277 default BF_REV_0_0 if (BF51x || BF52x || BF60x)
278 default BF_REV_0_2 if (BF534 || BF536 || BF537 || (BF54x && !BF54xM))
279 default BF_REV_0_3 if (BF531 || BF532 || BF533 || BF54xM || BF561)
283 depends on (BF51x || BF52x || (BF54x && !BF54xM) || BF60x)
287 depends on (BF51x || BF52x || (BF54x && !BF54xM) || BF60x)
291 depends on (BF51x || BF52x || BF537 || BF536 || BF534 || (BF54x && !BF54xM))
295 depends on (BF54xM || BF561 || BF537 || BF536 || BF534 || BF533 || BF532 || BF531)
299 depends on (BF561 || BF533 || BF532 || BF531 || BF538 || BF539 || BF54x)
303 depends on (BF561 || BF533 || BF532 || BF531 || BF538 || BF539)
307 depends on (BF533 || BF532 || BF531)
319 depends on (BF531 || BF532 || BF533 || BF534 || BF536 || BF537)
325 depends on (BF51x || BF52x || BF53x || BF538 || BF539 || BF561)
327 config PINCTRL_BLACKFIN_ADI2
329 depends on (BF54x || BF60x)
333 config MEM_MT48LC64M4A2FB_7E
335 depends on (BFIN533_STAMP)
338 config MEM_MT48LC16M16A2TG_75
340 depends on (BFIN533_EZKIT || BFIN561_EZKIT \
341 || BFIN533_BLUETECHNIX_CM || BFIN537_BLUETECHNIX_CM_E \
342 || BFIN537_BLUETECHNIX_CM_U || H8606_HVSISTEMAS \
343 || BFIN527_BLUETECHNIX_CM)
346 config MEM_MT48LC32M8A2_75
348 depends on (BFIN518F_EZBRD || BFIN537_STAMP || PNAV10 || BFIN538_EZKIT)
351 config MEM_MT48LC8M32B2B5_7
353 depends on (BFIN561_BLUETECHNIX_CM)
356 config MEM_MT48LC32M16A2TG_75
358 depends on (BFIN527_EZKIT || BFIN527_EZKIT_V2 || BFIN532_IP0X || BLACKSTAMP || BFIN527_AD7160EVAL)
361 config MEM_MT48H32M16LFCJ_75
363 depends on (BFIN526_EZBRD)
366 config MEM_MT47H64M16
368 depends on (BFIN609_EZKIT)
371 source "arch/blackfin/mach-bf518/Kconfig"
372 source "arch/blackfin/mach-bf527/Kconfig"
373 source "arch/blackfin/mach-bf533/Kconfig"
374 source "arch/blackfin/mach-bf561/Kconfig"
375 source "arch/blackfin/mach-bf537/Kconfig"
376 source "arch/blackfin/mach-bf538/Kconfig"
377 source "arch/blackfin/mach-bf548/Kconfig"
378 source "arch/blackfin/mach-bf609/Kconfig"
380 menu "Board customizations"
383 bool "Default bootloader kernel arguments"
386 string "Initial kernel command string"
387 depends on CMDLINE_BOOL
388 default "console=ttyBF0,57600"
390 If you don't have a boot loader capable of passing a command line string
391 to the kernel, you may specify one here. As a minimum, you should specify
392 the memory size and the root device (e.g., mem=8M, root=/dev/nfs).
395 hex "Kernel load address for booting"
397 range 0x1000 0x20000000
399 This option allows you to set the load address of the kernel.
400 This can be useful if you are on a board which has a small amount
401 of memory or you wish to reserve some memory at the beginning of
404 Note that you need to keep this value above 4k (0x1000) as this
405 memory region is used to capture NULL pointer references as well
406 as some core kernel functions.
408 config PHY_RAM_BASE_ADDRESS
409 hex "Physical RAM Base"
412 set BF609 FPGA physical SRAM base address
415 hex "Kernel ROM Base"
418 range 0x20000000 0x20400000 if !(BF54x || BF561 || BF60x)
419 range 0x20000000 0x30000000 if (BF54x || BF561)
420 range 0xB0000000 0xC0000000 if (BF60x)
422 Make sure your ROM base does not include any file-header
423 information that is prepended to the kernel.
425 For example, the bootable U-Boot format (created with
426 mkimage) has a 64 byte header (0x40). So while the image
427 you write to flash might start at say 0x20080000, you have
428 to add 0x40 to get the kernel's ROM base as it will come
431 comment "Clock/PLL Setup"
434 int "Frequency of the crystal on the board in Hz"
435 default "10000000" if BFIN532_IP0X
436 default "11059200" if BFIN533_STAMP
437 default "24576000" if PNAV10
438 default "25000000" # most people use this
439 default "27000000" if BFIN533_EZKIT
440 default "30000000" if BFIN561_EZKIT
441 default "24000000" if BFIN527_AD7160EVAL
443 The frequency of CLKIN crystal oscillator on the board in Hz.
444 Warning: This value should match the crystal on the board. Otherwise,
445 peripherals won't work properly.
447 config BFIN_KERNEL_CLOCK
448 bool "Re-program Clocks while Kernel boots?"
451 This option decides if kernel clocks are re-programed from the
452 bootloader settings. If the clocks are not set, the SDRAM settings
453 are also not changed, and the Bootloader does 100% of the hardware
458 depends on BFIN_KERNEL_CLOCK && (!BF60x)
463 depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS)
466 If this is set the clock will be divided by 2, before it goes to the PLL.
470 depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS)
472 default "22" if BFIN533_EZKIT
473 default "45" if BFIN533_STAMP
474 default "20" if (BFIN537_STAMP || BFIN527_EZKIT || BFIN527_EZKIT_V2 || BFIN548_EZKIT || BFIN548_BLUETECHNIX_CM || BFIN538_EZKIT)
475 default "22" if BFIN533_BLUETECHNIX_CM
476 default "20" if (BFIN537_BLUETECHNIX_CM_E || BFIN537_BLUETECHNIX_CM_U || BFIN527_BLUETECHNIX_CM || BFIN561_BLUETECHNIX_CM)
477 default "20" if (BFIN561_EZKIT || BF609)
478 default "16" if (H8606_HVSISTEMAS || BLACKSTAMP || BFIN526_EZBRD || BFIN518F_EZBRD)
479 default "25" if BFIN527_AD7160EVAL
481 This controls the frequency of the on-chip PLL. This can be between 1 and 64.
482 PLL Frequency = (Crystal Frequency) * (this setting)
485 prompt "Core Clock Divider"
486 depends on BFIN_KERNEL_CLOCK
489 This sets the frequency of the core. It can be 1, 2, 4 or 8
490 Core Frequency = (PLL frequency) / (this setting)
506 int "System Clock Divider"
507 depends on BFIN_KERNEL_CLOCK
511 This sets the frequency of the system clock (including SDRAM or DDR) on
512 !BF60x else it set the clock for system buses and provides the
513 source from which SCLK0 and SCLK1 are derived.
514 This can be between 1 and 15
515 System Clock = (PLL frequency) / (this setting)
518 int "System Clock0 Divider"
519 depends on BFIN_KERNEL_CLOCK && BF60x
523 This sets the frequency of the system clock0 for PVP and all other
524 peripherals not clocked by SCLK1.
525 This can be between 1 and 15
526 System Clock0 = (System Clock) / (this setting)
529 int "System Clock1 Divider"
530 depends on BFIN_KERNEL_CLOCK && BF60x
534 This sets the frequency of the system clock1 (including SPORT, SPI and ACM).
535 This can be between 1 and 15
536 System Clock1 = (System Clock) / (this setting)
539 int "DDR Clock Divider"
540 depends on BFIN_KERNEL_CLOCK && BF60x
544 This sets the frequency of the DDR memory.
545 This can be between 1 and 15
546 DDR Clock = (PLL frequency) / (this setting)
549 prompt "DDR SDRAM Chip Type"
550 depends on BFIN_KERNEL_CLOCK
552 default MEM_MT46V32M16_5B
554 config MEM_MT46V32M16_6T
557 config MEM_MT46V32M16_5B
562 prompt "DDR/SDRAM Timing"
563 depends on BFIN_KERNEL_CLOCK && !BF60x
564 default BFIN_KERNEL_CLOCK_MEMINIT_CALC
566 This option allows you to specify Blackfin SDRAM/DDR Timing parameters
567 The calculated SDRAM timing parameters may not be 100%
568 accurate - This option is therefore marked experimental.
570 config BFIN_KERNEL_CLOCK_MEMINIT_CALC
571 bool "Calculate Timings"
573 config BFIN_KERNEL_CLOCK_MEMINIT_SPEC
574 bool "Provide accurate Timings based on target SCLK"
576 Please consult the Blackfin Hardware Reference Manuals as well
577 as the memory device datasheet.
578 http://docs.blackfin.uclinux.org/doku.php?id=bfin:sdram
581 menu "Memory Init Control"
582 depends on BFIN_KERNEL_CLOCK_MEMINIT_SPEC
599 config MEM_EBIU_DDRQUE
616 # Max & Min Speeds for various Chips
620 default 400000000 if BF512
621 default 400000000 if BF514
622 default 400000000 if BF516
623 default 400000000 if BF518
624 default 400000000 if BF522
625 default 600000000 if BF523
626 default 400000000 if BF524
627 default 600000000 if BF525
628 default 400000000 if BF526
629 default 600000000 if BF527
630 default 400000000 if BF531
631 default 400000000 if BF532
632 default 750000000 if BF533
633 default 500000000 if BF534
634 default 400000000 if BF536
635 default 600000000 if BF537
636 default 533333333 if BF538
637 default 533333333 if BF539
638 default 600000000 if BF542
639 default 533333333 if BF544
640 default 600000000 if BF547
641 default 600000000 if BF548
642 default 533333333 if BF549
643 default 600000000 if BF561
644 default 800000000 if BF609
652 default 200000000 if BF609
659 comment "Kernel Timer/Scheduler"
661 source kernel/Kconfig.hz
663 config SET_GENERIC_CLOCKEVENTS
664 bool "Generic clock events"
666 select GENERIC_CLOCKEVENTS
668 menu "Clock event device"
669 depends on GENERIC_CLOCKEVENTS
670 config TICKSOURCE_GPTMR0
675 config TICKSOURCE_CORETMR
681 depends on GENERIC_CLOCKEVENTS
682 config CYCLES_CLOCKSOURCE
685 depends on !BFIN_SCRATCH_REG_CYCLES
688 If you say Y here, you will enable support for using the 'cycles'
689 registers as a clock source. Doing so means you will be unable to
690 safely write to the 'cycles' register during runtime. You will
691 still be able to read it (such as for performance monitoring), but
692 writing the registers will most likely crash the kernel.
694 config GPTMR0_CLOCKSOURCE
697 depends on !TICKSOURCE_GPTMR0
703 prompt "Blackfin Exception Scratch Register"
704 default BFIN_SCRATCH_REG_RETN
706 Select the resource to reserve for the Exception handler:
707 - RETN: Non-Maskable Interrupt (NMI)
708 - RETE: Exception Return (JTAG/ICE)
709 - CYCLES: Performance counter
711 If you are unsure, please select "RETN".
713 config BFIN_SCRATCH_REG_RETN
716 Use the RETN register in the Blackfin exception handler
717 as a stack scratch register. This means you cannot
718 safely use NMI on the Blackfin while running Linux, but
719 you can debug the system with a JTAG ICE and use the
720 CYCLES performance registers.
722 If you are unsure, please select "RETN".
724 config BFIN_SCRATCH_REG_RETE
727 Use the RETE register in the Blackfin exception handler
728 as a stack scratch register. This means you cannot
729 safely use a JTAG ICE while debugging a Blackfin board,
730 but you can safely use the CYCLES performance registers
733 If you are unsure, please select "RETN".
735 config BFIN_SCRATCH_REG_CYCLES
738 Use the CYCLES register in the Blackfin exception handler
739 as a stack scratch register. This means you cannot
740 safely use the CYCLES performance registers on a Blackfin
741 board at anytime, but you can debug the system with a JTAG
744 If you are unsure, please select "RETN".
751 menu "Blackfin Kernel Optimizations"
753 comment "Memory Optimizations"
756 bool "Locate interrupt entry code in L1 Memory"
760 If enabled, interrupt entry code (STORE/RESTORE CONTEXT) is linked
761 into L1 instruction memory. (less latency)
763 config EXCPT_IRQ_SYSC_L1
764 bool "Locate entire ASM lowlevel exception / interrupt - Syscall and CPLB handler code in L1 Memory"
768 If enabled, the entire ASM lowlevel exception and interrupt entry code
769 (STORE/RESTORE CONTEXT) is linked into L1 instruction memory.
773 bool "Locate frequently called do_irq dispatcher function in L1 Memory"
777 If enabled, the frequently called do_irq dispatcher function is linked
778 into L1 instruction memory. (less latency)
780 config CORE_TIMER_IRQ_L1
781 bool "Locate frequently called timer_interrupt() function in L1 Memory"
785 If enabled, the frequently called timer_interrupt() function is linked
786 into L1 instruction memory. (less latency)
789 bool "Locate frequently idle function in L1 Memory"
793 If enabled, the frequently called idle function is linked
794 into L1 instruction memory. (less latency)
797 bool "Locate kernel schedule function in L1 Memory"
801 If enabled, the frequently called kernel schedule is linked
802 into L1 instruction memory. (less latency)
804 config ARITHMETIC_OPS_L1
805 bool "Locate kernel owned arithmetic functions in L1 Memory"
809 If enabled, arithmetic functions are linked
810 into L1 instruction memory. (less latency)
813 bool "Locate access_ok function in L1 Memory"
817 If enabled, the access_ok function is linked
818 into L1 instruction memory. (less latency)
821 bool "Locate memset function in L1 Memory"
825 If enabled, the memset function is linked
826 into L1 instruction memory. (less latency)
829 bool "Locate memcpy function in L1 Memory"
833 If enabled, the memcpy function is linked
834 into L1 instruction memory. (less latency)
837 bool "locate strcmp function in L1 Memory"
841 If enabled, the strcmp function is linked
842 into L1 instruction memory (less latency).
845 bool "locate strncmp function in L1 Memory"
849 If enabled, the strncmp function is linked
850 into L1 instruction memory (less latency).
853 bool "locate strcpy function in L1 Memory"
857 If enabled, the strcpy function is linked
858 into L1 instruction memory (less latency).
861 bool "locate strncpy function in L1 Memory"
865 If enabled, the strncpy function is linked
866 into L1 instruction memory (less latency).
868 config SYS_BFIN_SPINLOCK_L1
869 bool "Locate sys_bfin_spinlock function in L1 Memory"
873 If enabled, sys_bfin_spinlock function is linked
874 into L1 instruction memory. (less latency)
876 config CACHELINE_ALIGNED_L1
877 bool "Locate cacheline_aligned data to L1 Data Memory"
880 depends on !SMP && !BF531 && !CRC32
882 If enabled, cacheline_aligned data is linked
883 into L1 data memory. (less latency)
885 config SYSCALL_TAB_L1
886 bool "Locate Syscall Table L1 Data Memory"
888 depends on !SMP && !BF531
890 If enabled, the Syscall LUT is linked
891 into L1 data memory. (less latency)
893 config CPLB_SWITCH_TAB_L1
894 bool "Locate CPLB Switch Tables L1 Data Memory"
896 depends on !SMP && !BF531
898 If enabled, the CPLB Switch Tables are linked
899 into L1 data memory. (less latency)
901 config ICACHE_FLUSH_L1
902 bool "Locate icache flush funcs in L1 Inst Memory"
905 If enabled, the Blackfin icache flushing functions are linked
906 into L1 instruction memory.
908 Note that this might be required to address anomalies, but
909 these functions are pretty small, so it shouldn't be too bad.
910 If you are using a processor affected by an anomaly, the build
911 system will double check for you and prevent it.
913 config DCACHE_FLUSH_L1
914 bool "Locate dcache flush funcs in L1 Inst Memory"
918 If enabled, the Blackfin dcache flushing functions are linked
919 into L1 instruction memory.
922 bool "Support locating application stack in L1 Scratch Memory"
926 If enabled the application stack can be located in L1
927 scratch memory (less latency).
929 Currently only works with FLAT binaries.
931 config EXCEPTION_L1_SCRATCH
932 bool "Locate exception stack in L1 Scratch Memory"
934 depends on !SMP && !APP_STACK_L1
936 Whenever an exception occurs, use the L1 Scratch memory for
937 stack storage. You cannot place the stacks of FLAT binaries
938 in L1 when using this option.
940 If you don't use L1 Scratch, then you should say Y here.
942 comment "Speed Optimizations"
943 config BFIN_INS_LOWOVERHEAD
944 bool "ins[bwl] low overhead, higher interrupt latency"
948 Reads on the Blackfin are speculative. In Blackfin terms, this means
949 they can be interrupted at any time (even after they have been issued
950 on to the external bus), and re-issued after the interrupt occurs.
951 For memory - this is not a big deal, since memory does not change if
954 If a FIFO is sitting on the end of the read, it will see two reads,
955 when the core only sees one since the FIFO receives both the read
956 which is cancelled (and not delivered to the core) and the one which
957 is re-issued (which is delivered to the core).
959 To solve this, interrupts are turned off before reads occur to
960 I/O space. This option controls which the overhead/latency of
961 controlling interrupts during this time
962 "n" turns interrupts off every read
963 (higher overhead, but lower interrupt latency)
964 "y" turns interrupts off every loop
965 (low overhead, but longer interrupt latency)
967 default behavior is to leave this set to on (type "Y"). If you are experiencing
968 interrupt latency issues, it is safe and OK to turn this off.
973 prompt "Kernel executes from"
975 Choose the memory type that the kernel will be running in.
980 The kernel will be resident in RAM when running.
985 The kernel will be resident in FLASH/ROM when running.
989 # Common code uses "ROMKERNEL" or "XIP_KERNEL", so define both
998 tristate "Enable Blackfin General Purpose Timers API"
1001 Enable support for the General Purpose Timers API. If you
1004 To compile this driver as a module, choose M here: the module
1005 will be called gptimers.
1008 prompt "Uncached DMA region"
1009 default DMA_UNCACHED_1M
1010 config DMA_UNCACHED_32M
1011 bool "Enable 32M DMA region"
1012 config DMA_UNCACHED_16M
1013 bool "Enable 16M DMA region"
1014 config DMA_UNCACHED_8M
1015 bool "Enable 8M DMA region"
1016 config DMA_UNCACHED_4M
1017 bool "Enable 4M DMA region"
1018 config DMA_UNCACHED_2M
1019 bool "Enable 2M DMA region"
1020 config DMA_UNCACHED_1M
1021 bool "Enable 1M DMA region"
1022 config DMA_UNCACHED_512K
1023 bool "Enable 512K DMA region"
1024 config DMA_UNCACHED_256K
1025 bool "Enable 256K DMA region"
1026 config DMA_UNCACHED_128K
1027 bool "Enable 128K DMA region"
1028 config DMA_UNCACHED_NONE
1029 bool "Disable DMA region"
1033 comment "Cache Support"
1036 bool "Enable ICACHE"
1038 config BFIN_EXTMEM_ICACHEABLE
1039 bool "Enable ICACHE for external memory"
1040 depends on BFIN_ICACHE
1042 config BFIN_L2_ICACHEABLE
1043 bool "Enable ICACHE for L2 SRAM"
1044 depends on BFIN_ICACHE
1045 depends on (BF54x || BF561 || BF60x) && !SMP
1049 bool "Enable DCACHE"
1051 config BFIN_DCACHE_BANKA
1052 bool "Enable only 16k BankA DCACHE - BankB is SRAM"
1053 depends on BFIN_DCACHE && !BF531
1055 config BFIN_EXTMEM_DCACHEABLE
1056 bool "Enable DCACHE for external memory"
1057 depends on BFIN_DCACHE
1060 prompt "External memory DCACHE policy"
1061 depends on BFIN_EXTMEM_DCACHEABLE
1062 default BFIN_EXTMEM_WRITEBACK if !SMP
1063 default BFIN_EXTMEM_WRITETHROUGH if SMP
1064 config BFIN_EXTMEM_WRITEBACK
1069 Cached data will be written back to SDRAM only when needed.
1070 This can give a nice increase in performance, but beware of
1071 broken drivers that do not properly invalidate/flush their
1074 Write Through Policy:
1075 Cached data will always be written back to SDRAM when the
1076 cache is updated. This is a completely safe setting, but
1077 performance is worse than Write Back.
1079 If you are unsure of the options and you want to be safe,
1080 then go with Write Through.
1082 config BFIN_EXTMEM_WRITETHROUGH
1083 bool "Write through"
1086 Cached data will be written back to SDRAM only when needed.
1087 This can give a nice increase in performance, but beware of
1088 broken drivers that do not properly invalidate/flush their
1091 Write Through Policy:
1092 Cached data will always be written back to SDRAM when the
1093 cache is updated. This is a completely safe setting, but
1094 performance is worse than Write Back.
1096 If you are unsure of the options and you want to be safe,
1097 then go with Write Through.
1101 config BFIN_L2_DCACHEABLE
1102 bool "Enable DCACHE for L2 SRAM"
1103 depends on BFIN_DCACHE
1104 depends on (BF54x || BF561 || BF60x) && !SMP
1107 prompt "L2 SRAM DCACHE policy"
1108 depends on BFIN_L2_DCACHEABLE
1109 default BFIN_L2_WRITEBACK
1110 config BFIN_L2_WRITEBACK
1113 config BFIN_L2_WRITETHROUGH
1114 bool "Write through"
1118 comment "Memory Protection Unit"
1120 bool "Enable the memory protection unit"
1123 Use the processor's MPU to protect applications from accessing
1124 memory they do not own. This comes at a performance penalty
1125 and is recommended only for debugging.
1127 comment "Asynchronous Memory Configuration"
1129 menu "EBIU_AMGCTL Global Control"
1132 bool "Enable CLKOUT"
1136 bool "DMA has priority over core for ext. accesses"
1141 bool "Bank 0 16 bit packing enable"
1146 bool "Bank 1 16 bit packing enable"
1151 bool "Bank 2 16 bit packing enable"
1156 bool "Bank 3 16 bit packing enable"
1160 prompt "Enable Asynchronous Memory Banks"
1164 bool "Disable All Banks"
1167 bool "Enable Bank 0"
1169 config C_AMBEN_B0_B1
1170 bool "Enable Bank 0 & 1"
1172 config C_AMBEN_B0_B1_B2
1173 bool "Enable Bank 0 & 1 & 2"
1176 bool "Enable All Banks"
1180 menu "EBIU_AMBCTL Control"
1183 hex "Bank 0 (AMBCTL0.L)"
1186 These are the low 16 bits of the EBIU_AMBCTL0 MMR which are
1187 used to control the Asynchronous Memory Bank 0 settings.
1190 hex "Bank 1 (AMBCTL0.H)"
1192 default 0x5558 if BF54x
1194 These are the high 16 bits of the EBIU_AMBCTL0 MMR which are
1195 used to control the Asynchronous Memory Bank 1 settings.
1198 hex "Bank 2 (AMBCTL1.L)"
1201 These are the low 16 bits of the EBIU_AMBCTL1 MMR which are
1202 used to control the Asynchronous Memory Bank 2 settings.
1205 hex "Bank 3 (AMBCTL1.H)"
1208 These are the high 16 bits of the EBIU_AMBCTL1 MMR which are
1209 used to control the Asynchronous Memory Bank 3 settings.
1213 config EBIU_MBSCTLVAL
1214 hex "EBIU Bank Select Control Register"
1219 hex "Flash Memory Mode Control Register"
1224 hex "Flash Memory Bank Control Register"
1229 #############################################################################
1230 menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
1236 Support for PCI bus.
1238 source "drivers/pci/Kconfig"
1240 source "drivers/pcmcia/Kconfig"
1244 menu "Executable file formats"
1246 source "fs/Kconfig.binfmt"
1250 menu "Power management options"
1252 source "kernel/power/Kconfig"
1254 config ARCH_SUSPEND_POSSIBLE
1258 prompt "Standby Power Saving Mode"
1259 depends on PM && !BF60x
1260 default PM_BFIN_SLEEP_DEEPER
1261 config PM_BFIN_SLEEP_DEEPER
1264 Sleep "Deeper" Mode (High Power Savings) - This mode reduces dynamic
1265 power dissipation by disabling the clock to the processor core (CCLK).
1266 Furthermore, Standby sets the internal power supply voltage (VDDINT)
1267 to 0.85 V to provide the greatest power savings, while preserving the
1269 The PLL and system clock (SCLK) continue to operate at a very low
1270 frequency of about 3.3 MHz. To preserve data integrity in the SDRAM,
1271 the SDRAM is put into Self Refresh Mode. Typically an external event
1272 such as GPIO interrupt or RTC activity wakes up the processor.
1273 Various Peripherals such as UART, SPORT, PPI may not function as
1274 normal during Sleep Deeper, due to the reduced SCLK frequency.
1275 When in the sleep mode, system DMA access to L1 memory is not supported.
1277 If unsure, select "Sleep Deeper".
1279 config PM_BFIN_SLEEP
1282 Sleep Mode (High Power Savings) - The sleep mode reduces power
1283 dissipation by disabling the clock to the processor core (CCLK).
1284 The PLL and system clock (SCLK), however, continue to operate in
1285 this mode. Typically an external event or RTC activity will wake
1286 up the processor. When in the sleep mode, system DMA access to L1
1287 memory is not supported.
1289 If unsure, select "Sleep Deeper".
1292 comment "Possible Suspend Mem / Hibernate Wake-Up Sources"
1295 config PM_BFIN_WAKE_PH6
1296 bool "Allow Wake-Up from on-chip PHY or PH6 GP"
1297 depends on PM && (BF51x || BF52x || BF534 || BF536 || BF537)
1300 Enable PHY and PH6 GP Wake-Up (Voltage Regulator Power-Up)
1302 config PM_BFIN_WAKE_GP
1303 bool "Allow Wake-Up from GPIOs"
1304 depends on PM && BF54x
1307 Enable General-Purpose Wake-Up (Voltage Regulator Power-Up)
1308 (all processors, except ADSP-BF549). This option sets
1309 the general-purpose wake-up enable (GPWE) control bit to enable
1310 wake-up upon detection of an active low signal on the /GPW (PH7) pin.
1311 On ADSP-BF549 this option enables the same functionality on the
1312 /MRXON pin also PH7.
1314 config PM_BFIN_WAKE_PA15
1315 bool "Allow Wake-Up from PA15"
1316 depends on PM && BF60x
1321 config PM_BFIN_WAKE_PA15_POL
1322 int "Wake-up priority"
1323 depends on PM_BFIN_WAKE_PA15
1326 Wake-Up priority 0(low) 1(high)
1328 config PM_BFIN_WAKE_PB15
1329 bool "Allow Wake-Up from PB15"
1330 depends on PM && BF60x
1335 config PM_BFIN_WAKE_PB15_POL
1336 int "Wake-up priority"
1337 depends on PM_BFIN_WAKE_PB15
1340 Wake-Up priority 0(low) 1(high)
1342 config PM_BFIN_WAKE_PC15
1343 bool "Allow Wake-Up from PC15"
1344 depends on PM && BF60x
1349 config PM_BFIN_WAKE_PC15_POL
1350 int "Wake-up priority"
1351 depends on PM_BFIN_WAKE_PC15
1354 Wake-Up priority 0(low) 1(high)
1356 config PM_BFIN_WAKE_PD06
1357 bool "Allow Wake-Up from PD06(ETH0_PHYINT)"
1358 depends on PM && BF60x
1361 Enable PD06(ETH0_PHYINT) Wake-up
1363 config PM_BFIN_WAKE_PD06_POL
1364 int "Wake-up priority"
1365 depends on PM_BFIN_WAKE_PD06
1368 Wake-Up priority 0(low) 1(high)
1370 config PM_BFIN_WAKE_PE12
1371 bool "Allow Wake-Up from PE12(ETH1_PHYINT, PUSH BUTTON)"
1372 depends on PM && BF60x
1375 Enable PE12(ETH1_PHYINT, PUSH BUTTON) Wake-up
1377 config PM_BFIN_WAKE_PE12_POL
1378 int "Wake-up priority"
1379 depends on PM_BFIN_WAKE_PE12
1382 Wake-Up priority 0(low) 1(high)
1384 config PM_BFIN_WAKE_PG04
1385 bool "Allow Wake-Up from PG04(CAN0_RX)"
1386 depends on PM && BF60x
1389 Enable PG04(CAN0_RX) Wake-up
1391 config PM_BFIN_WAKE_PG04_POL
1392 int "Wake-up priority"
1393 depends on PM_BFIN_WAKE_PG04
1396 Wake-Up priority 0(low) 1(high)
1398 config PM_BFIN_WAKE_PG13
1399 bool "Allow Wake-Up from PG13"
1400 depends on PM && BF60x
1405 config PM_BFIN_WAKE_PG13_POL
1406 int "Wake-up priority"
1407 depends on PM_BFIN_WAKE_PG13
1410 Wake-Up priority 0(low) 1(high)
1412 config PM_BFIN_WAKE_USB
1413 bool "Allow Wake-Up from (USB)"
1414 depends on PM && BF60x
1417 Enable (USB) Wake-up
1419 config PM_BFIN_WAKE_USB_POL
1420 int "Wake-up priority"
1421 depends on PM_BFIN_WAKE_USB
1424 Wake-Up priority 0(low) 1(high)
1428 menu "CPU Frequency scaling"
1430 source "drivers/cpufreq/Kconfig"
1432 config BFIN_CPU_FREQ
1438 bool "CPU Voltage scaling"
1442 Say Y here if you want CPU voltage scaling according to the CPU frequency.
1443 This option violates the PLL BYPASS recommendation in the Blackfin Processor
1444 manuals. There is a theoretical risk that during VDDINT transitions
1449 source "net/Kconfig"
1451 source "drivers/Kconfig"
1453 source "drivers/firmware/Kconfig"
1457 source "arch/blackfin/Kconfig.debug"
1459 source "security/Kconfig"
1461 source "crypto/Kconfig"
1463 source "lib/Kconfig"