tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1config MMU
2 def_bool n
3
4config FPU
5 def_bool n
6
7config RWSEM_GENERIC_SPINLOCK
8 def_bool y
9
10config RWSEM_XCHGADD_ALGORITHM
11 def_bool n
12
13config BLACKFIN
14 def_bool y
15 select HAVE_ARCH_KGDB
16 select HAVE_ARCH_TRACEHOOK
17 select HAVE_DYNAMIC_FTRACE
18 select HAVE_FTRACE_MCOUNT_RECORD
19 select HAVE_FUNCTION_GRAPH_TRACER
20 select HAVE_FUNCTION_TRACER
21 select HAVE_IDE
22 select HAVE_KERNEL_GZIP if RAMKERNEL
23 select HAVE_KERNEL_BZIP2 if RAMKERNEL
24 select HAVE_KERNEL_LZMA if RAMKERNEL
25 select HAVE_KERNEL_LZO if RAMKERNEL
26 select HAVE_OPROFILE
27 select HAVE_PERF_EVENTS
28 select ARCH_HAVE_CUSTOM_GPIO_H
29 select ARCH_REQUIRE_GPIOLIB
30 select HAVE_UID16
31 select HAVE_UNDERSCORE_SYMBOL_PREFIX
32 select VIRT_TO_BUS
33 select ARCH_WANT_IPC_PARSE_VERSION
34 select GENERIC_ATOMIC64
35 select GENERIC_IRQ_PROBE
36 select GENERIC_IRQ_SHOW
37 select HAVE_NMI_WATCHDOG if NMI_WATCHDOG
38 select GENERIC_SMP_IDLE_THREAD
39 select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS
40 select HAVE_MOD_ARCH_SPECIFIC
41 select MODULES_USE_ELF_RELA
42 select HAVE_DEBUG_STACKOVERFLOW
43 select HAVE_NMI
44
45config GENERIC_CSUM
46 def_bool y
47
48config GENERIC_BUG
49 def_bool y
50 depends on BUG
51
52config ZONE_DMA
53 def_bool y
54
55config FORCE_MAX_ZONEORDER
56 int
57 default "14"
58
59config GENERIC_CALIBRATE_DELAY
60 def_bool y
61
62config LOCKDEP_SUPPORT
63 def_bool y
64
65config STACKTRACE_SUPPORT
66 def_bool y
67
68config TRACE_IRQFLAGS_SUPPORT
69 def_bool y
70
71source "init/Kconfig"
72
73source "kernel/Kconfig.preempt"
74
75source "kernel/Kconfig.freezer"
76
77menu "Blackfin Processor Options"
78
79comment "Processor and Board Settings"
80
81choice
82 prompt "CPU"
83 default BF533
84
85config BF512
86 bool "BF512"
87 help
88 BF512 Processor Support.
89
90config BF514
91 bool "BF514"
92 help
93 BF514 Processor Support.
94
95config BF516
96 bool "BF516"
97 help
98 BF516 Processor Support.
99
100config BF518
101 bool "BF518"
102 help
103 BF518 Processor Support.
104
105config BF522
106 bool "BF522"
107 help
108 BF522 Processor Support.
109
110config BF523
111 bool "BF523"
112 help
113 BF523 Processor Support.
114
115config BF524
116 bool "BF524"
117 help
118 BF524 Processor Support.
119
120config BF525
121 bool "BF525"
122 help
123 BF525 Processor Support.
124
125config BF526
126 bool "BF526"
127 help
128 BF526 Processor Support.
129
130config BF527
131 bool "BF527"
132 help
133 BF527 Processor Support.
134
135config BF531
136 bool "BF531"
137 help
138 BF531 Processor Support.
139
140config BF532
141 bool "BF532"
142 help
143 BF532 Processor Support.
144
145config BF533
146 bool "BF533"
147 help
148 BF533 Processor Support.
149
150config BF534
151 bool "BF534"
152 help
153 BF534 Processor Support.
154
155config BF536
156 bool "BF536"
157 help
158 BF536 Processor Support.
159
160config BF537
161 bool "BF537"
162 help
163 BF537 Processor Support.
164
165config BF538
166 bool "BF538"
167 help
168 BF538 Processor Support.
169
170config BF539
171 bool "BF539"
172 help
173 BF539 Processor Support.
174
175config BF542_std
176 bool "BF542"
177 help
178 BF542 Processor Support.
179
180config BF542M
181 bool "BF542m"
182 help
183 BF542 Processor Support.
184
185config BF544_std
186 bool "BF544"
187 help
188 BF544 Processor Support.
189
190config BF544M
191 bool "BF544m"
192 help
193 BF544 Processor Support.
194
195config BF547_std
196 bool "BF547"
197 help
198 BF547 Processor Support.
199
200config BF547M
201 bool "BF547m"
202 help
203 BF547 Processor Support.
204
205config BF548_std
206 bool "BF548"
207 help
208 BF548 Processor Support.
209
210config BF548M
211 bool "BF548m"
212 help
213 BF548 Processor Support.
214
215config BF549_std
216 bool "BF549"
217 help
218 BF549 Processor Support.
219
220config BF549M
221 bool "BF549m"
222 help
223 BF549 Processor Support.
224
225config BF561
226 bool "BF561"
227 help
228 BF561 Processor Support.
229
230config BF609
231 bool "BF609"
232 select CLKDEV_LOOKUP
233 help
234 BF609 Processor Support.
235
236endchoice
237
238config SMP
239 depends on BF561
240 select TICKSOURCE_CORETMR
241 bool "Symmetric multi-processing support"
242 ---help---
243 This enables support for systems with more than one CPU,
244 like the dual core BF561. If you have a system with only one
245 CPU, say N. If you have a system with more than one CPU, say Y.
246
247 If you don't know what to do here, say N.
248
249config NR_CPUS
250 int
251 depends on SMP
252 default 2 if BF561
253
254config HOTPLUG_CPU
255 bool "Support for hot-pluggable CPUs"
256 depends on SMP
257 default y
258
259config BF_REV_MIN
260 int
261 default 0 if (BF51x || BF52x || (BF54x && !BF54xM)) || BF60x
262 default 2 if (BF537 || BF536 || BF534)
263 default 3 if (BF561 || BF533 || BF532 || BF531 || BF54xM)
264 default 4 if (BF538 || BF539)
265
266config BF_REV_MAX
267 int
268 default 2 if (BF51x || BF52x || (BF54x && !BF54xM)) || BF60x
269 default 3 if (BF537 || BF536 || BF534 || BF54xM)
270 default 5 if (BF561 || BF538 || BF539)
271 default 6 if (BF533 || BF532 || BF531)
272
273choice
274 prompt "Silicon Rev"
275 default BF_REV_0_0 if (BF51x || BF52x || BF60x)
276 default BF_REV_0_2 if (BF534 || BF536 || BF537 || (BF54x && !BF54xM))
277 default BF_REV_0_3 if (BF531 || BF532 || BF533 || BF54xM || BF561)
278
279config BF_REV_0_0
280 bool "0.0"
281 depends on (BF51x || BF52x || (BF54x && !BF54xM) || BF60x)
282
283config BF_REV_0_1
284 bool "0.1"
285 depends on (BF51x || BF52x || (BF54x && !BF54xM) || BF60x)
286
287config BF_REV_0_2
288 bool "0.2"
289 depends on (BF51x || BF52x || BF537 || BF536 || BF534 || (BF54x && !BF54xM))
290
291config BF_REV_0_3
292 bool "0.3"
293 depends on (BF54xM || BF561 || BF537 || BF536 || BF534 || BF533 || BF532 || BF531)
294
295config BF_REV_0_4
296 bool "0.4"
297 depends on (BF561 || BF533 || BF532 || BF531 || BF538 || BF539 || BF54x)
298
299config BF_REV_0_5
300 bool "0.5"
301 depends on (BF561 || BF533 || BF532 || BF531 || BF538 || BF539)
302
303config BF_REV_0_6
304 bool "0.6"
305 depends on (BF533 || BF532 || BF531)
306
307config BF_REV_ANY
308 bool "any"
309
310config BF_REV_NONE
311 bool "none"
312
313endchoice
314
315config BF53x
316 bool
317 depends on (BF531 || BF532 || BF533 || BF534 || BF536 || BF537)
318 default y
319
320config GPIO_ADI
321 def_bool y
322 depends on (BF51x || BF52x || BF53x || BF538 || BF539 || BF561)
323
324config PINCTRL
325 def_bool y
326 depends on BF54x || BF60x
327
328config MEM_MT48LC64M4A2FB_7E
329 bool
330 depends on (BFIN533_STAMP)
331 default y
332
333config MEM_MT48LC16M16A2TG_75
334 bool
335 depends on (BFIN533_EZKIT || BFIN561_EZKIT \
336 || BFIN533_BLUETECHNIX_CM || BFIN537_BLUETECHNIX_CM_E \
337 || BFIN537_BLUETECHNIX_CM_U || H8606_HVSISTEMAS \
338 || BFIN527_BLUETECHNIX_CM)
339 default y
340
341config MEM_MT48LC32M8A2_75
342 bool
343 depends on (BFIN518F_EZBRD || BFIN537_STAMP || PNAV10 || BFIN538_EZKIT)
344 default y
345
346config MEM_MT48LC8M32B2B5_7
347 bool
348 depends on (BFIN561_BLUETECHNIX_CM)
349 default y
350
351config MEM_MT48LC32M16A2TG_75
352 bool
353 depends on (BFIN527_EZKIT || BFIN527_EZKIT_V2 || BFIN532_IP0X || BLACKSTAMP || BFIN527_AD7160EVAL)
354 default y
355
356config MEM_MT48H32M16LFCJ_75
357 bool
358 depends on (BFIN526_EZBRD)
359 default y
360
361config MEM_MT47H64M16
362 bool
363 depends on (BFIN609_EZKIT)
364 default y
365
366source "arch/blackfin/mach-bf518/Kconfig"
367source "arch/blackfin/mach-bf527/Kconfig"
368source "arch/blackfin/mach-bf533/Kconfig"
369source "arch/blackfin/mach-bf561/Kconfig"
370source "arch/blackfin/mach-bf537/Kconfig"
371source "arch/blackfin/mach-bf538/Kconfig"
372source "arch/blackfin/mach-bf548/Kconfig"
373source "arch/blackfin/mach-bf609/Kconfig"
374
375menu "Board customizations"
376
377config CMDLINE_BOOL
378 bool "Default bootloader kernel arguments"
379
380config CMDLINE
381 string "Initial kernel command string"
382 depends on CMDLINE_BOOL
383 default "console=ttyBF0,57600"
384 help
385 If you don't have a boot loader capable of passing a command line string
386 to the kernel, you may specify one here. As a minimum, you should specify
387 the memory size and the root device (e.g., mem=8M, root=/dev/nfs).
388
389config BOOT_LOAD
390 hex "Kernel load address for booting"
391 default "0x1000"
392 range 0x1000 0x20000000
393 help
394 This option allows you to set the load address of the kernel.
395 This can be useful if you are on a board which has a small amount
396 of memory or you wish to reserve some memory at the beginning of
397 the address space.
398
399 Note that you need to keep this value above 4k (0x1000) as this
400 memory region is used to capture NULL pointer references as well
401 as some core kernel functions.
402
403config PHY_RAM_BASE_ADDRESS
404 hex "Physical RAM Base"
405 default 0x0
406 help
407 set BF609 FPGA physical SRAM base address
408
409config ROM_BASE
410 hex "Kernel ROM Base"
411 depends on ROMKERNEL
412 default "0x20040040"
413 range 0x20000000 0x20400000 if !(BF54x || BF561 || BF60x)
414 range 0x20000000 0x30000000 if (BF54x || BF561)
415 range 0xB0000000 0xC0000000 if (BF60x)
416 help
417 Make sure your ROM base does not include any file-header
418 information that is prepended to the kernel.
419
420 For example, the bootable U-Boot format (created with
421 mkimage) has a 64 byte header (0x40). So while the image
422 you write to flash might start at say 0x20080000, you have
423 to add 0x40 to get the kernel's ROM base as it will come
424 after the header.
425
426comment "Clock/PLL Setup"
427
428config CLKIN_HZ
429 int "Frequency of the crystal on the board in Hz"
430 default "10000000" if BFIN532_IP0X
431 default "11059200" if BFIN533_STAMP
432 default "24576000" if PNAV10
433 default "25000000" # most people use this
434 default "27000000" if BFIN533_EZKIT
435 default "30000000" if BFIN561_EZKIT
436 default "24000000" if BFIN527_AD7160EVAL
437 help
438 The frequency of CLKIN crystal oscillator on the board in Hz.
439 Warning: This value should match the crystal on the board. Otherwise,
440 peripherals won't work properly.
441
442config BFIN_KERNEL_CLOCK
443 bool "Re-program Clocks while Kernel boots?"
444 default n
445 help
446 This option decides if kernel clocks are re-programed from the
447 bootloader settings. If the clocks are not set, the SDRAM settings
448 are also not changed, and the Bootloader does 100% of the hardware
449 configuration.
450
451config PLL_BYPASS
452 bool "Bypass PLL"
453 depends on BFIN_KERNEL_CLOCK && (!BF60x)
454 default n
455
456config CLKIN_HALF
457 bool "Half Clock In"
458 depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS)
459 default n
460 help
461 If this is set the clock will be divided by 2, before it goes to the PLL.
462
463config VCO_MULT
464 int "VCO Multiplier"
465 depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS)
466 range 1 64
467 default "22" if BFIN533_EZKIT
468 default "45" if BFIN533_STAMP
469 default "20" if (BFIN537_STAMP || BFIN527_EZKIT || BFIN527_EZKIT_V2 || BFIN548_EZKIT || BFIN548_BLUETECHNIX_CM || BFIN538_EZKIT)
470 default "22" if BFIN533_BLUETECHNIX_CM
471 default "20" if (BFIN537_BLUETECHNIX_CM_E || BFIN537_BLUETECHNIX_CM_U || BFIN527_BLUETECHNIX_CM || BFIN561_BLUETECHNIX_CM)
472 default "20" if (BFIN561_EZKIT || BF609)
473 default "16" if (H8606_HVSISTEMAS || BLACKSTAMP || BFIN526_EZBRD || BFIN518F_EZBRD)
474 default "25" if BFIN527_AD7160EVAL
475 help
476 This controls the frequency of the on-chip PLL. This can be between 1 and 64.
477 PLL Frequency = (Crystal Frequency) * (this setting)
478
479choice
480 prompt "Core Clock Divider"
481 depends on BFIN_KERNEL_CLOCK
482 default CCLK_DIV_1
483 help
484 This sets the frequency of the core. It can be 1, 2, 4 or 8
485 Core Frequency = (PLL frequency) / (this setting)
486
487config CCLK_DIV_1
488 bool "1"
489
490config CCLK_DIV_2
491 bool "2"
492
493config CCLK_DIV_4
494 bool "4"
495
496config CCLK_DIV_8
497 bool "8"
498endchoice
499
500config SCLK_DIV
501 int "System Clock Divider"
502 depends on BFIN_KERNEL_CLOCK
503 range 1 15
504 default 4
505 help
506 This sets the frequency of the system clock (including SDRAM or DDR) on
507 !BF60x else it set the clock for system buses and provides the
508 source from which SCLK0 and SCLK1 are derived.
509 This can be between 1 and 15
510 System Clock = (PLL frequency) / (this setting)
511
512config SCLK0_DIV
513 int "System Clock0 Divider"
514 depends on BFIN_KERNEL_CLOCK && BF60x
515 range 1 15
516 default 1
517 help
518 This sets the frequency of the system clock0 for PVP and all other
519 peripherals not clocked by SCLK1.
520 This can be between 1 and 15
521 System Clock0 = (System Clock) / (this setting)
522
523config SCLK1_DIV
524 int "System Clock1 Divider"
525 depends on BFIN_KERNEL_CLOCK && BF60x
526 range 1 15
527 default 1
528 help
529 This sets the frequency of the system clock1 (including SPORT, SPI and ACM).
530 This can be between 1 and 15
531 System Clock1 = (System Clock) / (this setting)
532
533config DCLK_DIV
534 int "DDR Clock Divider"
535 depends on BFIN_KERNEL_CLOCK && BF60x
536 range 1 15
537 default 2
538 help
539 This sets the frequency of the DDR memory.
540 This can be between 1 and 15
541 DDR Clock = (PLL frequency) / (this setting)
542
543choice
544 prompt "DDR SDRAM Chip Type"
545 depends on BFIN_KERNEL_CLOCK
546 depends on BF54x
547 default MEM_MT46V32M16_5B
548
549config MEM_MT46V32M16_6T
550 bool "MT46V32M16_6T"
551
552config MEM_MT46V32M16_5B
553 bool "MT46V32M16_5B"
554endchoice
555
556choice
557 prompt "DDR/SDRAM Timing"
558 depends on BFIN_KERNEL_CLOCK && !BF60x
559 default BFIN_KERNEL_CLOCK_MEMINIT_CALC
560 help
561 This option allows you to specify Blackfin SDRAM/DDR Timing parameters
562 The calculated SDRAM timing parameters may not be 100%
563 accurate - This option is therefore marked experimental.
564
565config BFIN_KERNEL_CLOCK_MEMINIT_CALC
566 bool "Calculate Timings"
567
568config BFIN_KERNEL_CLOCK_MEMINIT_SPEC
569 bool "Provide accurate Timings based on target SCLK"
570 help
571 Please consult the Blackfin Hardware Reference Manuals as well
572 as the memory device datasheet.
573 http://docs.blackfin.uclinux.org/doku.php?id=bfin:sdram
574endchoice
575
576menu "Memory Init Control"
577 depends on BFIN_KERNEL_CLOCK_MEMINIT_SPEC
578
579config MEM_DDRCTL0
580 depends on BF54x
581 hex "DDRCTL0"
582 default 0x0
583
584config MEM_DDRCTL1
585 depends on BF54x
586 hex "DDRCTL1"
587 default 0x0
588
589config MEM_DDRCTL2
590 depends on BF54x
591 hex "DDRCTL2"
592 default 0x0
593
594config MEM_EBIU_DDRQUE
595 depends on BF54x
596 hex "DDRQUE"
597 default 0x0
598
599config MEM_SDRRC
600 depends on !BF54x
601 hex "SDRRC"
602 default 0x0
603
604config MEM_SDGCTL
605 depends on !BF54x
606 hex "SDGCTL"
607 default 0x0
608endmenu
609
610#
611# Max & Min Speeds for various Chips
612#
613config MAX_VCO_HZ
614 int
615 default 400000000 if BF512
616 default 400000000 if BF514
617 default 400000000 if BF516
618 default 400000000 if BF518
619 default 400000000 if BF522
620 default 600000000 if BF523
621 default 400000000 if BF524
622 default 600000000 if BF525
623 default 400000000 if BF526
624 default 600000000 if BF527
625 default 400000000 if BF531
626 default 400000000 if BF532
627 default 750000000 if BF533
628 default 500000000 if BF534
629 default 400000000 if BF536
630 default 600000000 if BF537
631 default 533333333 if BF538
632 default 533333333 if BF539
633 default 600000000 if BF542
634 default 533333333 if BF544
635 default 600000000 if BF547
636 default 600000000 if BF548
637 default 533333333 if BF549
638 default 600000000 if BF561
639 default 800000000 if BF609
640
641config MIN_VCO_HZ
642 int
643 default 50000000
644
645config MAX_SCLK_HZ
646 int
647 default 200000000 if BF609
648 default 133333333
649
650config MIN_SCLK_HZ
651 int
652 default 27000000
653
654comment "Kernel Timer/Scheduler"
655
656source kernel/Kconfig.hz
657
658config SET_GENERIC_CLOCKEVENTS
659 bool "Generic clock events"
660 default y
661 select GENERIC_CLOCKEVENTS
662
663menu "Clock event device"
664 depends on GENERIC_CLOCKEVENTS
665config TICKSOURCE_GPTMR0
666 bool "GPTimer0"
667 depends on !SMP
668 select BFIN_GPTIMERS
669
670config TICKSOURCE_CORETMR
671 bool "Core timer"
672 default y
673endmenu
674
675menu "Clock source"
676 depends on GENERIC_CLOCKEVENTS
677config CYCLES_CLOCKSOURCE
678 bool "CYCLES"
679 default y
680 depends on !BFIN_SCRATCH_REG_CYCLES
681 depends on !SMP
682 help
683 If you say Y here, you will enable support for using the 'cycles'
684 registers as a clock source. Doing so means you will be unable to
685 safely write to the 'cycles' register during runtime. You will
686 still be able to read it (such as for performance monitoring), but
687 writing the registers will most likely crash the kernel.
688
689config GPTMR0_CLOCKSOURCE
690 bool "GPTimer0"
691 select BFIN_GPTIMERS
692 depends on !TICKSOURCE_GPTMR0
693endmenu
694
695comment "Misc"
696
697choice
698 prompt "Blackfin Exception Scratch Register"
699 default BFIN_SCRATCH_REG_RETN
700 help
701 Select the resource to reserve for the Exception handler:
702 - RETN: Non-Maskable Interrupt (NMI)
703 - RETE: Exception Return (JTAG/ICE)
704 - CYCLES: Performance counter
705
706 If you are unsure, please select "RETN".
707
708config BFIN_SCRATCH_REG_RETN
709 bool "RETN"
710 help
711 Use the RETN register in the Blackfin exception handler
712 as a stack scratch register. This means you cannot
713 safely use NMI on the Blackfin while running Linux, but
714 you can debug the system with a JTAG ICE and use the
715 CYCLES performance registers.
716
717 If you are unsure, please select "RETN".
718
719config BFIN_SCRATCH_REG_RETE
720 bool "RETE"
721 help
722 Use the RETE register in the Blackfin exception handler
723 as a stack scratch register. This means you cannot
724 safely use a JTAG ICE while debugging a Blackfin board,
725 but you can safely use the CYCLES performance registers
726 and the NMI.
727
728 If you are unsure, please select "RETN".
729
730config BFIN_SCRATCH_REG_CYCLES
731 bool "CYCLES"
732 help
733 Use the CYCLES register in the Blackfin exception handler
734 as a stack scratch register. This means you cannot
735 safely use the CYCLES performance registers on a Blackfin
736 board at anytime, but you can debug the system with a JTAG
737 ICE and use the NMI.
738
739 If you are unsure, please select "RETN".
740
741endchoice
742
743endmenu
744
745
746menu "Blackfin Kernel Optimizations"
747
748comment "Memory Optimizations"
749
750config I_ENTRY_L1
751 bool "Locate interrupt entry code in L1 Memory"
752 default y
753 depends on !SMP
754 help
755 If enabled, interrupt entry code (STORE/RESTORE CONTEXT) is linked
756 into L1 instruction memory. (less latency)
757
758config EXCPT_IRQ_SYSC_L1
759 bool "Locate entire ASM lowlevel exception / interrupt - Syscall and CPLB handler code in L1 Memory"
760 default y
761 depends on !SMP
762 help
763 If enabled, the entire ASM lowlevel exception and interrupt entry code
764 (STORE/RESTORE CONTEXT) is linked into L1 instruction memory.
765 (less latency)
766
767config DO_IRQ_L1
768 bool "Locate frequently called do_irq dispatcher function in L1 Memory"
769 default y
770 depends on !SMP
771 help
772 If enabled, the frequently called do_irq dispatcher function is linked
773 into L1 instruction memory. (less latency)
774
775config CORE_TIMER_IRQ_L1
776 bool "Locate frequently called timer_interrupt() function in L1 Memory"
777 default y
778 depends on !SMP
779 help
780 If enabled, the frequently called timer_interrupt() function is linked
781 into L1 instruction memory. (less latency)
782
783config IDLE_L1
784 bool "Locate frequently idle function in L1 Memory"
785 default y
786 depends on !SMP
787 help
788 If enabled, the frequently called idle function is linked
789 into L1 instruction memory. (less latency)
790
791config SCHEDULE_L1
792 bool "Locate kernel schedule function in L1 Memory"
793 default y
794 depends on !SMP
795 help
796 If enabled, the frequently called kernel schedule is linked
797 into L1 instruction memory. (less latency)
798
799config ARITHMETIC_OPS_L1
800 bool "Locate kernel owned arithmetic functions in L1 Memory"
801 default y
802 depends on !SMP
803 help
804 If enabled, arithmetic functions are linked
805 into L1 instruction memory. (less latency)
806
807config ACCESS_OK_L1
808 bool "Locate access_ok function in L1 Memory"
809 default y
810 depends on !SMP
811 help
812 If enabled, the access_ok function is linked
813 into L1 instruction memory. (less latency)
814
815config MEMSET_L1
816 bool "Locate memset function in L1 Memory"
817 default y
818 depends on !SMP
819 help
820 If enabled, the memset function is linked
821 into L1 instruction memory. (less latency)
822
823config MEMCPY_L1
824 bool "Locate memcpy function in L1 Memory"
825 default y
826 depends on !SMP
827 help
828 If enabled, the memcpy function is linked
829 into L1 instruction memory. (less latency)
830
831config STRCMP_L1
832 bool "locate strcmp function in L1 Memory"
833 default y
834 depends on !SMP
835 help
836 If enabled, the strcmp function is linked
837 into L1 instruction memory (less latency).
838
839config STRNCMP_L1
840 bool "locate strncmp function in L1 Memory"
841 default y
842 depends on !SMP
843 help
844 If enabled, the strncmp function is linked
845 into L1 instruction memory (less latency).
846
847config STRCPY_L1
848 bool "locate strcpy function in L1 Memory"
849 default y
850 depends on !SMP
851 help
852 If enabled, the strcpy function is linked
853 into L1 instruction memory (less latency).
854
855config STRNCPY_L1
856 bool "locate strncpy function in L1 Memory"
857 default y
858 depends on !SMP
859 help
860 If enabled, the strncpy function is linked
861 into L1 instruction memory (less latency).
862
863config SYS_BFIN_SPINLOCK_L1
864 bool "Locate sys_bfin_spinlock function in L1 Memory"
865 default y
866 depends on !SMP
867 help
868 If enabled, sys_bfin_spinlock function is linked
869 into L1 instruction memory. (less latency)
870
871config CACHELINE_ALIGNED_L1
872 bool "Locate cacheline_aligned data to L1 Data Memory"
873 default y if !BF54x
874 default n if BF54x
875 depends on !SMP && !BF531 && !CRC32
876 help
877 If enabled, cacheline_aligned data is linked
878 into L1 data memory. (less latency)
879
880config SYSCALL_TAB_L1
881 bool "Locate Syscall Table L1 Data Memory"
882 default n
883 depends on !SMP && !BF531
884 help
885 If enabled, the Syscall LUT is linked
886 into L1 data memory. (less latency)
887
888config CPLB_SWITCH_TAB_L1
889 bool "Locate CPLB Switch Tables L1 Data Memory"
890 default n
891 depends on !SMP && !BF531
892 help
893 If enabled, the CPLB Switch Tables are linked
894 into L1 data memory. (less latency)
895
896config ICACHE_FLUSH_L1
897 bool "Locate icache flush funcs in L1 Inst Memory"
898 default y
899 help
900 If enabled, the Blackfin icache flushing functions are linked
901 into L1 instruction memory.
902
903 Note that this might be required to address anomalies, but
904 these functions are pretty small, so it shouldn't be too bad.
905 If you are using a processor affected by an anomaly, the build
906 system will double check for you and prevent it.
907
908config DCACHE_FLUSH_L1
909 bool "Locate dcache flush funcs in L1 Inst Memory"
910 default y
911 depends on !SMP
912 help
913 If enabled, the Blackfin dcache flushing functions are linked
914 into L1 instruction memory.
915
916config APP_STACK_L1
917 bool "Support locating application stack in L1 Scratch Memory"
918 default y
919 depends on !SMP
920 help
921 If enabled the application stack can be located in L1
922 scratch memory (less latency).
923
924 Currently only works with FLAT binaries.
925
926config EXCEPTION_L1_SCRATCH
927 bool "Locate exception stack in L1 Scratch Memory"
928 default n
929 depends on !SMP && !APP_STACK_L1
930 help
931 Whenever an exception occurs, use the L1 Scratch memory for
932 stack storage. You cannot place the stacks of FLAT binaries
933 in L1 when using this option.
934
935 If you don't use L1 Scratch, then you should say Y here.
936
937comment "Speed Optimizations"
938config BFIN_INS_LOWOVERHEAD
939 bool "ins[bwl] low overhead, higher interrupt latency"
940 default y
941 depends on !SMP
942 help
943 Reads on the Blackfin are speculative. In Blackfin terms, this means
944 they can be interrupted at any time (even after they have been issued
945 on to the external bus), and re-issued after the interrupt occurs.
946 For memory - this is not a big deal, since memory does not change if
947 it sees a read.
948
949 If a FIFO is sitting on the end of the read, it will see two reads,
950 when the core only sees one since the FIFO receives both the read
951 which is cancelled (and not delivered to the core) and the one which
952 is re-issued (which is delivered to the core).
953
954 To solve this, interrupts are turned off before reads occur to
955 I/O space. This option controls which the overhead/latency of
956 controlling interrupts during this time
957 "n" turns interrupts off every read
958 (higher overhead, but lower interrupt latency)
959 "y" turns interrupts off every loop
960 (low overhead, but longer interrupt latency)
961
962 default behavior is to leave this set to on (type "Y"). If you are experiencing
963 interrupt latency issues, it is safe and OK to turn this off.
964
965endmenu
966
967choice
968 prompt "Kernel executes from"
969 help
970 Choose the memory type that the kernel will be running in.
971
972config RAMKERNEL
973 bool "RAM"
974 help
975 The kernel will be resident in RAM when running.
976
977config ROMKERNEL
978 bool "ROM"
979 help
980 The kernel will be resident in FLASH/ROM when running.
981
982endchoice
983
984# Common code uses "ROMKERNEL" or "XIP_KERNEL", so define both
985config XIP_KERNEL
986 bool
987 default y
988 depends on ROMKERNEL
989
990source "mm/Kconfig"
991
992config BFIN_GPTIMERS
993 tristate "Enable Blackfin General Purpose Timers API"
994 default n
995 help
996 Enable support for the General Purpose Timers API. If you
997 are unsure, say N.
998
999 To compile this driver as a module, choose M here: the module
1000 will be called gptimers.
1001
1002choice
1003 prompt "Uncached DMA region"
1004 default DMA_UNCACHED_1M
1005config DMA_UNCACHED_32M
1006 bool "Enable 32M DMA region"
1007config DMA_UNCACHED_16M
1008 bool "Enable 16M DMA region"
1009config DMA_UNCACHED_8M
1010 bool "Enable 8M DMA region"
1011config DMA_UNCACHED_4M
1012 bool "Enable 4M DMA region"
1013config DMA_UNCACHED_2M
1014 bool "Enable 2M DMA region"
1015config DMA_UNCACHED_1M
1016 bool "Enable 1M DMA region"
1017config DMA_UNCACHED_512K
1018 bool "Enable 512K DMA region"
1019config DMA_UNCACHED_256K
1020 bool "Enable 256K DMA region"
1021config DMA_UNCACHED_128K
1022 bool "Enable 128K DMA region"
1023config DMA_UNCACHED_NONE
1024 bool "Disable DMA region"
1025endchoice
1026
1027
1028comment "Cache Support"
1029
1030config BFIN_ICACHE
1031 bool "Enable ICACHE"
1032 default y
1033config BFIN_EXTMEM_ICACHEABLE
1034 bool "Enable ICACHE for external memory"
1035 depends on BFIN_ICACHE
1036 default y
1037config BFIN_L2_ICACHEABLE
1038 bool "Enable ICACHE for L2 SRAM"
1039 depends on BFIN_ICACHE
1040 depends on (BF54x || BF561 || BF60x) && !SMP
1041 default n
1042
1043config BFIN_DCACHE
1044 bool "Enable DCACHE"
1045 default y
1046config BFIN_DCACHE_BANKA
1047 bool "Enable only 16k BankA DCACHE - BankB is SRAM"
1048 depends on BFIN_DCACHE && !BF531
1049 default n
1050config BFIN_EXTMEM_DCACHEABLE
1051 bool "Enable DCACHE for external memory"
1052 depends on BFIN_DCACHE
1053 default y
1054choice
1055 prompt "External memory DCACHE policy"
1056 depends on BFIN_EXTMEM_DCACHEABLE
1057 default BFIN_EXTMEM_WRITEBACK if !SMP
1058 default BFIN_EXTMEM_WRITETHROUGH if SMP
1059config BFIN_EXTMEM_WRITEBACK
1060 bool "Write back"
1061 depends on !SMP
1062 help
1063 Write Back Policy:
1064 Cached data will be written back to SDRAM only when needed.
1065 This can give a nice increase in performance, but beware of
1066 broken drivers that do not properly invalidate/flush their
1067 cache.
1068
1069 Write Through Policy:
1070 Cached data will always be written back to SDRAM when the
1071 cache is updated. This is a completely safe setting, but
1072 performance is worse than Write Back.
1073
1074 If you are unsure of the options and you want to be safe,
1075 then go with Write Through.
1076
1077config BFIN_EXTMEM_WRITETHROUGH
1078 bool "Write through"
1079 help
1080 Write Back Policy:
1081 Cached data will be written back to SDRAM only when needed.
1082 This can give a nice increase in performance, but beware of
1083 broken drivers that do not properly invalidate/flush their
1084 cache.
1085
1086 Write Through Policy:
1087 Cached data will always be written back to SDRAM when the
1088 cache is updated. This is a completely safe setting, but
1089 performance is worse than Write Back.
1090
1091 If you are unsure of the options and you want to be safe,
1092 then go with Write Through.
1093
1094endchoice
1095
1096config BFIN_L2_DCACHEABLE
1097 bool "Enable DCACHE for L2 SRAM"
1098 depends on BFIN_DCACHE
1099 depends on (BF54x || BF561 || BF60x) && !SMP
1100 default n
1101choice
1102 prompt "L2 SRAM DCACHE policy"
1103 depends on BFIN_L2_DCACHEABLE
1104 default BFIN_L2_WRITEBACK
1105config BFIN_L2_WRITEBACK
1106 bool "Write back"
1107
1108config BFIN_L2_WRITETHROUGH
1109 bool "Write through"
1110endchoice
1111
1112
1113comment "Memory Protection Unit"
1114config MPU
1115 bool "Enable the memory protection unit"
1116 default n
1117 help
1118 Use the processor's MPU to protect applications from accessing
1119 memory they do not own. This comes at a performance penalty
1120 and is recommended only for debugging.
1121
1122comment "Asynchronous Memory Configuration"
1123
1124menu "EBIU_AMGCTL Global Control"
1125 depends on !BF60x
1126config C_AMCKEN
1127 bool "Enable CLKOUT"
1128 default y
1129
1130config C_CDPRIO
1131 bool "DMA has priority over core for ext. accesses"
1132 default n
1133
1134config C_B0PEN
1135 depends on BF561
1136 bool "Bank 0 16 bit packing enable"
1137 default y
1138
1139config C_B1PEN
1140 depends on BF561
1141 bool "Bank 1 16 bit packing enable"
1142 default y
1143
1144config C_B2PEN
1145 depends on BF561
1146 bool "Bank 2 16 bit packing enable"
1147 default y
1148
1149config C_B3PEN
1150 depends on BF561
1151 bool "Bank 3 16 bit packing enable"
1152 default n
1153
1154choice
1155 prompt "Enable Asynchronous Memory Banks"
1156 default C_AMBEN_ALL
1157
1158config C_AMBEN
1159 bool "Disable All Banks"
1160
1161config C_AMBEN_B0
1162 bool "Enable Bank 0"
1163
1164config C_AMBEN_B0_B1
1165 bool "Enable Bank 0 & 1"
1166
1167config C_AMBEN_B0_B1_B2
1168 bool "Enable Bank 0 & 1 & 2"
1169
1170config C_AMBEN_ALL
1171 bool "Enable All Banks"
1172endchoice
1173endmenu
1174
1175menu "EBIU_AMBCTL Control"
1176 depends on !BF60x
1177config BANK_0
1178 hex "Bank 0 (AMBCTL0.L)"
1179 default 0x7BB0
1180 help
1181 These are the low 16 bits of the EBIU_AMBCTL0 MMR which are
1182 used to control the Asynchronous Memory Bank 0 settings.
1183
1184config BANK_1
1185 hex "Bank 1 (AMBCTL0.H)"
1186 default 0x7BB0
1187 default 0x5558 if BF54x
1188 help
1189 These are the high 16 bits of the EBIU_AMBCTL0 MMR which are
1190 used to control the Asynchronous Memory Bank 1 settings.
1191
1192config BANK_2
1193 hex "Bank 2 (AMBCTL1.L)"
1194 default 0x7BB0
1195 help
1196 These are the low 16 bits of the EBIU_AMBCTL1 MMR which are
1197 used to control the Asynchronous Memory Bank 2 settings.
1198
1199config BANK_3
1200 hex "Bank 3 (AMBCTL1.H)"
1201 default 0x99B3
1202 help
1203 These are the high 16 bits of the EBIU_AMBCTL1 MMR which are
1204 used to control the Asynchronous Memory Bank 3 settings.
1205
1206endmenu
1207
1208config EBIU_MBSCTLVAL
1209 hex "EBIU Bank Select Control Register"
1210 depends on BF54x
1211 default 0
1212
1213config EBIU_MODEVAL
1214 hex "Flash Memory Mode Control Register"
1215 depends on BF54x
1216 default 1
1217
1218config EBIU_FCTLVAL
1219 hex "Flash Memory Bank Control Register"
1220 depends on BF54x
1221 default 6
1222endmenu
1223
1224#############################################################################
1225menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
1226
1227config PCI
1228 bool "PCI support"
1229 depends on BROKEN
1230 help
1231 Support for PCI bus.
1232
1233source "drivers/pci/Kconfig"
1234
1235source "drivers/pcmcia/Kconfig"
1236
1237endmenu
1238
1239menu "Executable file formats"
1240
1241source "fs/Kconfig.binfmt"
1242
1243endmenu
1244
1245menu "Power management options"
1246
1247source "kernel/power/Kconfig"
1248
1249config ARCH_SUSPEND_POSSIBLE
1250 def_bool y
1251
1252choice
1253 prompt "Standby Power Saving Mode"
1254 depends on PM && !BF60x
1255 default PM_BFIN_SLEEP_DEEPER
1256config PM_BFIN_SLEEP_DEEPER
1257 bool "Sleep Deeper"
1258 help
1259 Sleep "Deeper" Mode (High Power Savings) - This mode reduces dynamic
1260 power dissipation by disabling the clock to the processor core (CCLK).
1261 Furthermore, Standby sets the internal power supply voltage (VDDINT)
1262 to 0.85 V to provide the greatest power savings, while preserving the
1263 processor state.
1264 The PLL and system clock (SCLK) continue to operate at a very low
1265 frequency of about 3.3 MHz. To preserve data integrity in the SDRAM,
1266 the SDRAM is put into Self Refresh Mode. Typically an external event
1267 such as GPIO interrupt or RTC activity wakes up the processor.
1268 Various Peripherals such as UART, SPORT, PPI may not function as
1269 normal during Sleep Deeper, due to the reduced SCLK frequency.
1270 When in the sleep mode, system DMA access to L1 memory is not supported.
1271
1272 If unsure, select "Sleep Deeper".
1273
1274config PM_BFIN_SLEEP
1275 bool "Sleep"
1276 help
1277 Sleep Mode (High Power Savings) - The sleep mode reduces power
1278 dissipation by disabling the clock to the processor core (CCLK).
1279 The PLL and system clock (SCLK), however, continue to operate in
1280 this mode. Typically an external event or RTC activity will wake
1281 up the processor. When in the sleep mode, system DMA access to L1
1282 memory is not supported.
1283
1284 If unsure, select "Sleep Deeper".
1285endchoice
1286
1287comment "Possible Suspend Mem / Hibernate Wake-Up Sources"
1288 depends on PM
1289
1290config PM_BFIN_WAKE_PH6
1291 bool "Allow Wake-Up from on-chip PHY or PH6 GP"
1292 depends on PM && (BF51x || BF52x || BF534 || BF536 || BF537)
1293 default n
1294 help
1295 Enable PHY and PH6 GP Wake-Up (Voltage Regulator Power-Up)
1296
1297config PM_BFIN_WAKE_GP
1298 bool "Allow Wake-Up from GPIOs"
1299 depends on PM && BF54x
1300 default n
1301 help
1302 Enable General-Purpose Wake-Up (Voltage Regulator Power-Up)
1303 (all processors, except ADSP-BF549). This option sets
1304 the general-purpose wake-up enable (GPWE) control bit to enable
1305 wake-up upon detection of an active low signal on the /GPW (PH7) pin.
1306 On ADSP-BF549 this option enables the same functionality on the
1307 /MRXON pin also PH7.
1308
1309config PM_BFIN_WAKE_PA15
1310 bool "Allow Wake-Up from PA15"
1311 depends on PM && BF60x
1312 default n
1313 help
1314 Enable PA15 Wake-Up
1315
1316config PM_BFIN_WAKE_PA15_POL
1317 int "Wake-up priority"
1318 depends on PM_BFIN_WAKE_PA15
1319 default 0
1320 help
1321 Wake-Up priority 0(low) 1(high)
1322
1323config PM_BFIN_WAKE_PB15
1324 bool "Allow Wake-Up from PB15"
1325 depends on PM && BF60x
1326 default n
1327 help
1328 Enable PB15 Wake-Up
1329
1330config PM_BFIN_WAKE_PB15_POL
1331 int "Wake-up priority"
1332 depends on PM_BFIN_WAKE_PB15
1333 default 0
1334 help
1335 Wake-Up priority 0(low) 1(high)
1336
1337config PM_BFIN_WAKE_PC15
1338 bool "Allow Wake-Up from PC15"
1339 depends on PM && BF60x
1340 default n
1341 help
1342 Enable PC15 Wake-Up
1343
1344config PM_BFIN_WAKE_PC15_POL
1345 int "Wake-up priority"
1346 depends on PM_BFIN_WAKE_PC15
1347 default 0
1348 help
1349 Wake-Up priority 0(low) 1(high)
1350
1351config PM_BFIN_WAKE_PD06
1352 bool "Allow Wake-Up from PD06(ETH0_PHYINT)"
1353 depends on PM && BF60x
1354 default n
1355 help
1356 Enable PD06(ETH0_PHYINT) Wake-up
1357
1358config PM_BFIN_WAKE_PD06_POL
1359 int "Wake-up priority"
1360 depends on PM_BFIN_WAKE_PD06
1361 default 0
1362 help
1363 Wake-Up priority 0(low) 1(high)
1364
1365config PM_BFIN_WAKE_PE12
1366 bool "Allow Wake-Up from PE12(ETH1_PHYINT, PUSH BUTTON)"
1367 depends on PM && BF60x
1368 default n
1369 help
1370 Enable PE12(ETH1_PHYINT, PUSH BUTTON) Wake-up
1371
1372config PM_BFIN_WAKE_PE12_POL
1373 int "Wake-up priority"
1374 depends on PM_BFIN_WAKE_PE12
1375 default 0
1376 help
1377 Wake-Up priority 0(low) 1(high)
1378
1379config PM_BFIN_WAKE_PG04
1380 bool "Allow Wake-Up from PG04(CAN0_RX)"
1381 depends on PM && BF60x
1382 default n
1383 help
1384 Enable PG04(CAN0_RX) Wake-up
1385
1386config PM_BFIN_WAKE_PG04_POL
1387 int "Wake-up priority"
1388 depends on PM_BFIN_WAKE_PG04
1389 default 0
1390 help
1391 Wake-Up priority 0(low) 1(high)
1392
1393config PM_BFIN_WAKE_PG13
1394 bool "Allow Wake-Up from PG13"
1395 depends on PM && BF60x
1396 default n
1397 help
1398 Enable PG13 Wake-Up
1399
1400config PM_BFIN_WAKE_PG13_POL
1401 int "Wake-up priority"
1402 depends on PM_BFIN_WAKE_PG13
1403 default 0
1404 help
1405 Wake-Up priority 0(low) 1(high)
1406
1407config PM_BFIN_WAKE_USB
1408 bool "Allow Wake-Up from (USB)"
1409 depends on PM && BF60x
1410 default n
1411 help
1412 Enable (USB) Wake-up
1413
1414config PM_BFIN_WAKE_USB_POL
1415 int "Wake-up priority"
1416 depends on PM_BFIN_WAKE_USB
1417 default 0
1418 help
1419 Wake-Up priority 0(low) 1(high)
1420
1421endmenu
1422
1423menu "CPU Frequency scaling"
1424
1425source "drivers/cpufreq/Kconfig"
1426
1427config BFIN_CPU_FREQ
1428 bool
1429 depends on CPU_FREQ
1430 default y
1431
1432config CPU_VOLTAGE
1433 bool "CPU Voltage scaling"
1434 depends on CPU_FREQ
1435 default n
1436 help
1437 Say Y here if you want CPU voltage scaling according to the CPU frequency.
1438 This option violates the PLL BYPASS recommendation in the Blackfin Processor
1439 manuals. There is a theoretical risk that during VDDINT transitions
1440 the PLL may unlock.
1441
1442endmenu
1443
1444source "net/Kconfig"
1445
1446source "drivers/Kconfig"
1447
1448source "drivers/firmware/Kconfig"
1449
1450source "fs/Kconfig"
1451
1452source "arch/blackfin/Kconfig.debug"
1453
1454source "security/Kconfig"
1455
1456source "crypto/Kconfig"
1457
1458source "lib/Kconfig"