1 /***************************************************************************
2 * Copyright (C) 2006 by Magnus Lundin *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
21 /***************************************************************************
22 * STELLARIS is tested on LM3S811
23 ***************************************************************************/
28 #include "replacements.h"
30 #include "stellaris.h"
31 #include "cortex_m3.h"
36 #include "binarybuffer.h"
43 #define DID0_VER(did0) ((did0>>28)&0x07)
44 int stellaris_register_commands(struct command_context_s
*cmd_ctx
);
45 int stellaris_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
);
46 int stellaris_erase(struct flash_bank_s
*bank
, int first
, int last
);
47 int stellaris_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
);
48 int stellaris_write(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 count
);
49 int stellaris_auto_probe(struct flash_bank_s
*bank
);
50 int stellaris_probe(struct flash_bank_s
*bank
);
51 int stellaris_erase_check(struct flash_bank_s
*bank
);
52 int stellaris_protect_check(struct flash_bank_s
*bank
);
53 int stellaris_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
);
55 int stellaris_read_part_info(struct flash_bank_s
*bank
);
56 u32
stellaris_get_flash_status(flash_bank_t
*bank
);
57 void stellaris_set_flash_mode(flash_bank_t
*bank
,int mode
);
58 u32
stellaris_wait_status_busy(flash_bank_t
*bank
, u32 waitbits
, int timeout
);
60 int stellaris_read_part_info(struct flash_bank_s
*bank
);
62 flash_driver_t stellaris_flash
=
65 .register_commands
= stellaris_register_commands
,
66 .flash_bank_command
= stellaris_flash_bank_command
,
67 .erase
= stellaris_erase
,
68 .protect
= stellaris_protect
,
69 .write
= stellaris_write
,
70 .probe
= stellaris_probe
,
71 .auto_probe
= stellaris_auto_probe
,
72 .erase_check
= stellaris_erase_check
,
73 .protect_check
= stellaris_protect_check
,
74 .info
= stellaris_info
204 char * StellarisClassname
[2] =
210 /***************************************************************************
211 * openocd command interface *
212 ***************************************************************************/
214 /* flash_bank stellaris <base> <size> 0 0 <target#>
216 int stellaris_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
)
218 stellaris_flash_bank_t
*stellaris_info
;
222 LOG_WARNING("incomplete flash_bank stellaris configuration");
223 return ERROR_FLASH_BANK_INVALID
;
226 stellaris_info
= calloc(sizeof(stellaris_flash_bank_t
),1);
228 bank
->driver_priv
= stellaris_info
;
230 stellaris_info
->target_name
= "Unknown target";
232 /* part wasn't probed for info yet */
233 stellaris_info
->did1
= 0;
235 /* TODO Use an optional main oscillator clock rate in kHz from arg[6] */
239 int stellaris_register_commands(struct command_context_s
*cmd_ctx
)
242 command_t *stellaris_cmd = register_command(cmd_ctx, NULL, "stellaris", NULL, COMMAND_ANY, NULL);
243 register_command(cmd_ctx, stellaris_cmd, "gpnvm", stellaris_handle_gpnvm_command, COMMAND_EXEC,
244 "stellaris gpnvm <num> <bit> set|clear, set or clear stellaris gpnvm bit");
249 int stellaris_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
)
251 int printed
, device_class
;
252 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
254 stellaris_read_part_info(bank
);
256 if (stellaris_info
->did1
== 0)
258 printed
= snprintf(buf
, buf_size
, "Cannot identify target as a Stellaris\n");
261 return ERROR_FLASH_OPERATION_FAILED
;
264 if (DID0_VER(stellaris_info
->did0
)>0)
266 device_class
= (stellaris_info
->did0
>>16)&0xFF;
272 printed
= snprintf(buf
, buf_size
, "\nLMI Stellaris information: Chip is class %i(%s) %s v%c.%i\n",
273 device_class
, StellarisClassname
[device_class
], stellaris_info
->target_name
,
274 'A' + ((stellaris_info
->did0
>>8)&0xFF), (stellaris_info
->did0
)&0xFF);
278 printed
= snprintf(buf
, buf_size
, "did1: 0x%8.8x, arch: 0x%4.4x, eproc: %s, ramsize:%ik, flashsize: %ik\n",
279 stellaris_info
->did1
, stellaris_info
->did1
, "ARMV7M", (1+((stellaris_info
->dc0
>>16)&0xFFFF))/4, (1+(stellaris_info
->dc0
&0xFFFF))*2);
283 printed
= snprintf(buf
, buf_size
, "master clock(estimated): %ikHz, rcc is 0x%x \n", stellaris_info
->mck_freq
/ 1000, stellaris_info
->rcc
);
287 if (stellaris_info
->num_lockbits
>0) {
288 printed
= snprintf(buf
, buf_size
, "pagesize: %i, lockbits: %i 0x%4.4x, pages in lock region: %i \n", stellaris_info
->pagesize
, stellaris_info
->num_lockbits
, stellaris_info
->lockbits
,stellaris_info
->num_pages
/stellaris_info
->num_lockbits
);
295 /***************************************************************************
296 * chip identification and status *
297 ***************************************************************************/
299 u32
stellaris_get_flash_status(flash_bank_t
*bank
)
301 target_t
*target
= bank
->target
;
304 target_read_u32(target
, FLASH_CONTROL_BASE
|FLASH_FMC
, &fmc
);
309 /** Read clock configuration and set stellaris_info->usec_clocks*/
311 void stellaris_read_clock_info(flash_bank_t
*bank
)
313 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
314 target_t
*target
= bank
->target
;
315 u32 rcc
, pllcfg
, sysdiv
, usesysdiv
, bypass
, oscsrc
;
316 unsigned long mainfreq
;
318 target_read_u32(target
, SCB_BASE
|RCC
, &rcc
);
319 LOG_DEBUG("Stellaris RCC %x",rcc
);
320 target_read_u32(target
, SCB_BASE
|PLLCFG
, &pllcfg
);
321 LOG_DEBUG("Stellaris PLLCFG %x",pllcfg
);
322 stellaris_info
->rcc
= rcc
;
324 sysdiv
= (rcc
>>23)&0xF;
325 usesysdiv
= (rcc
>>22)&0x1;
326 bypass
= (rcc
>>11)&0x1;
327 oscsrc
= (rcc
>>4)&0x3;
328 /* xtal = (rcc>>6)&0xF; */
332 mainfreq
= 6000000; /* Default xtal */
335 mainfreq
= 22500000; /* Internal osc. 15 MHz +- 50% */
338 mainfreq
= 5625000; /* Internal osc. / 4 */
341 LOG_WARNING("Invalid oscsrc (3) in rcc register");
345 default: /* NOTREACHED */
351 mainfreq
= 200000000; /* PLL out frec */
354 stellaris_info
->mck_freq
= mainfreq
/(1+sysdiv
);
356 stellaris_info
->mck_freq
= mainfreq
;
358 /* Forget old flash timing */
359 stellaris_set_flash_mode(bank
,0);
362 /* Setup the timimg registers */
363 void stellaris_set_flash_mode(flash_bank_t
*bank
,int mode
)
365 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
366 target_t
*target
= bank
->target
;
368 u32 usecrl
= (stellaris_info
->mck_freq
/1000000ul-1);
369 LOG_DEBUG("usecrl = %i",usecrl
);
370 target_write_u32(target
, SCB_BASE
|USECRL
, usecrl
);
374 u32
stellaris_wait_status_busy(flash_bank_t
*bank
, u32 waitbits
, int timeout
)
378 /* Stellaris waits for cmdbit to clear */
379 while (((status
= stellaris_get_flash_status(bank
)) & waitbits
) && (timeout
-- > 0))
381 LOG_DEBUG("status: 0x%x", status
);
385 /* Flash errors are reflected in the FLASH_CRIS register */
391 /* Send one command to the flash controller */
392 int stellaris_flash_command(struct flash_bank_s
*bank
,u8 cmd
,u16 pagen
)
395 target_t
*target
= bank
->target
;
397 fmc
= FMC_WRKEY
| cmd
;
398 target_write_u32(target
, FLASH_CONTROL_BASE
|FLASH_FMC
, fmc
);
399 LOG_DEBUG("Flash command: 0x%x", fmc
);
401 if (stellaris_wait_status_busy(bank
, cmd
, 100))
403 return ERROR_FLASH_OPERATION_FAILED
;
409 /* Read device id register, main clock frequency register and fill in driver info structure */
410 int stellaris_read_part_info(struct flash_bank_s
*bank
)
412 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
413 target_t
*target
= bank
->target
;
414 u32 did0
,did1
, ver
, fam
, status
;
417 /* Read and parse chip identification register */
418 target_read_u32(target
, SCB_BASE
|DID0
, &did0
);
419 target_read_u32(target
, SCB_BASE
|DID1
, &did1
);
420 target_read_u32(target
, SCB_BASE
|DC0
, &stellaris_info
->dc0
);
421 target_read_u32(target
, SCB_BASE
|DC1
, &stellaris_info
->dc1
);
422 LOG_DEBUG("did0 0x%x, did1 0x%x, dc0 0x%x, dc1 0x%x",did0
, did1
, stellaris_info
->dc0
,stellaris_info
->dc1
);
425 if((ver
!= 0) && (ver
!= 1))
427 LOG_WARNING("Unknown did0 version, cannot identify target");
428 return ERROR_FLASH_OPERATION_FAILED
;
433 LOG_WARNING("Cannot identify target as a Stellaris");
434 return ERROR_FLASH_OPERATION_FAILED
;
438 fam
= (did1
>> 24) & 0xF;
439 if(((ver
!= 0) && (ver
!= 1)) || (fam
!= 0))
441 LOG_WARNING("Unknown did1 version/family, cannot positively identify target as a Stellaris");
444 for (i
=0;StellarisParts
[i
].partno
;i
++)
446 if (StellarisParts
[i
].partno
==((did1
>>16)&0xFF))
450 stellaris_info
->target_name
= StellarisParts
[i
].partname
;
452 stellaris_info
->did0
= did0
;
453 stellaris_info
->did1
= did1
;
455 stellaris_info
->num_lockbits
= 1+(stellaris_info
->dc0
&0xFFFF);
456 stellaris_info
->num_pages
= 2*(1+(stellaris_info
->dc0
&0xFFFF));
457 stellaris_info
->pagesize
= 1024;
458 bank
->size
= 1024*stellaris_info
->num_pages
;
459 stellaris_info
->pages_in_lockregion
= 2;
460 target_read_u32(target
, SCB_BASE
|FMPPE
, &stellaris_info
->lockbits
);
462 /* Read main and master clock freqency register */
463 stellaris_read_clock_info(bank
);
465 status
= stellaris_get_flash_status(bank
);
470 /***************************************************************************
472 ***************************************************************************/
474 int stellaris_erase_check(struct flash_bank_s
*bank
)
478 stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
479 target_t *target = bank->target;
487 int stellaris_protect_check(struct flash_bank_s
*bank
)
491 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
493 if (bank
->target
->state
!= TARGET_HALTED
)
495 return ERROR_TARGET_NOT_HALTED
;
498 if (stellaris_info
->did1
== 0)
500 stellaris_read_part_info(bank
);
503 if (stellaris_info
->did1
== 0)
505 LOG_WARNING("Cannot identify target as an AT91SAM");
506 return ERROR_FLASH_OPERATION_FAILED
;
509 status
= stellaris_get_flash_status(bank
);
510 stellaris_info
->lockbits
= status
>> 16;
515 int stellaris_erase(struct flash_bank_s
*bank
, int first
, int last
)
518 u32 flash_fmc
, flash_cris
;
519 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
520 target_t
*target
= bank
->target
;
522 if (bank
->target
->state
!= TARGET_HALTED
)
524 return ERROR_TARGET_NOT_HALTED
;
527 if (stellaris_info
->did1
== 0)
529 stellaris_read_part_info(bank
);
532 if (stellaris_info
->did1
== 0)
534 LOG_WARNING("Cannot identify target as Stellaris");
535 return ERROR_FLASH_OPERATION_FAILED
;
538 if ((first
< 0) || (last
< first
) || (last
>= stellaris_info
->num_pages
))
540 return ERROR_FLASH_SECTOR_INVALID
;
543 /* Configure the flash controller timing */
544 stellaris_read_clock_info(bank
);
545 stellaris_set_flash_mode(bank
,0);
547 /* Clear and disable flash programming interrupts */
548 target_write_u32(target
, FLASH_CIM
, 0);
549 target_write_u32(target
, FLASH_MISC
, PMISC
|AMISC
);
551 if ((first
== 0) && (last
== (stellaris_info
->num_pages
-1)))
553 target_write_u32(target
, FLASH_FMA
, 0);
554 target_write_u32(target
, FLASH_FMC
, FMC_WRKEY
| FMC_MERASE
);
555 /* Wait until erase complete */
558 target_read_u32(target
, FLASH_FMC
, &flash_fmc
);
560 while(flash_fmc
& FMC_MERASE
);
562 /* if device has > 128k, then second erase cycle is needed */
563 if(stellaris_info
->num_pages
* stellaris_info
->pagesize
> 0x20000)
565 target_write_u32(target
, FLASH_FMA
, 0x20000);
566 target_write_u32(target
, FLASH_FMC
, FMC_WRKEY
| FMC_MERASE
);
567 /* Wait until erase complete */
570 target_read_u32(target
, FLASH_FMC
, &flash_fmc
);
572 while(flash_fmc
& FMC_MERASE
);
578 for (banknr
=first
;banknr
<=last
;banknr
++)
580 /* Address is first word in page */
581 target_write_u32(target
, FLASH_FMA
, banknr
*stellaris_info
->pagesize
);
582 /* Write erase command */
583 target_write_u32(target
, FLASH_FMC
, FMC_WRKEY
| FMC_ERASE
);
584 /* Wait until erase complete */
587 target_read_u32(target
, FLASH_FMC
, &flash_fmc
);
589 while(flash_fmc
& FMC_ERASE
);
591 /* Check acess violations */
592 target_read_u32(target
, FLASH_CRIS
, &flash_cris
);
593 if(flash_cris
& (AMASK
))
595 LOG_WARNING("Error erasing flash page %i, flash_cris 0x%x", banknr
, flash_cris
);
596 target_write_u32(target
, FLASH_CRIS
, 0);
597 return ERROR_FLASH_OPERATION_FAILED
;
604 int stellaris_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
)
606 u32 fmppe
, flash_fmc
, flash_cris
;
609 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
610 target_t
*target
= bank
->target
;
612 if (bank
->target
->state
!= TARGET_HALTED
)
614 return ERROR_TARGET_NOT_HALTED
;
617 if ((first
< 0) || (last
< first
) || (last
>= stellaris_info
->num_lockbits
))
619 return ERROR_FLASH_SECTOR_INVALID
;
622 if (stellaris_info
->did1
== 0)
624 stellaris_read_part_info(bank
);
627 if (stellaris_info
->did1
== 0)
629 LOG_WARNING("Cannot identify target as an Stellaris MCU");
630 return ERROR_FLASH_OPERATION_FAILED
;
633 /* Configure the flash controller timing */
634 stellaris_read_clock_info(bank
);
635 stellaris_set_flash_mode(bank
,0);
637 fmppe
= stellaris_info
->lockbits
;
638 for (lockregion
=first
;lockregion
<=last
;lockregion
++)
641 fmppe
&= ~(1<<lockregion
);
643 fmppe
|= (1<<lockregion
);
646 /* Clear and disable flash programming interrupts */
647 target_write_u32(target
, FLASH_CIM
, 0);
648 target_write_u32(target
, FLASH_MISC
, PMISC
|AMISC
);
650 LOG_DEBUG("fmppe 0x%x",fmppe
);
651 target_write_u32(target
, SCB_BASE
|FMPPE
, fmppe
);
653 target_write_u32(target
, FLASH_FMA
, 1);
654 /* Write commit command */
655 /* TODO safety check, sice this cannot be undone */
656 LOG_WARNING("Flash protection cannot be removed once commited, commit is NOT executed !");
657 /* target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_COMT); */
658 /* Wait until erase complete */
661 target_read_u32(target
, FLASH_FMC
, &flash_fmc
);
663 while(flash_fmc
& FMC_COMT
);
665 /* Check acess violations */
666 target_read_u32(target
, FLASH_CRIS
, &flash_cris
);
667 if(flash_cris
& (AMASK
))
669 LOG_WARNING("Error setting flash page protection, flash_cris 0x%x", flash_cris
);
670 target_write_u32(target
, FLASH_CRIS
, 0);
671 return ERROR_FLASH_OPERATION_FAILED
;
674 target_read_u32(target
, SCB_BASE
|FMPPE
, &stellaris_info
->lockbits
);
679 u8 stellaris_write_code
[] =
684 r1 = destination address
685 r2 = bytecount (in) - endaddr (work)
688 r3 = pFLASH_CTRL_BASE
694 0x07,0x4B, /* ldr r3,pFLASH_CTRL_BASE */
695 0x08,0x4C, /* ldr r4,FLASHWRITECMD */
696 0x01,0x25, /* movs r5, 1 */
697 0x00,0x26, /* movs r6, #0 */
699 0x19,0x60, /* str r1, [r3, #0] */
700 0x87,0x59, /* ldr r7, [r0, r6] */
701 0x5F,0x60, /* str r7, [r3, #4] */
702 0x9C,0x60, /* str r4, [r3, #8] */
704 0x9F,0x68, /* ldr r7, [r3, #8] */
705 0x2F,0x42, /* tst r7, r5 */
706 0xFC,0xD1, /* bne waitloop */
707 0x04,0x31, /* adds r1, r1, #4 */
708 0x04,0x36, /* adds r6, r6, #4 */
709 0x96,0x42, /* cmp r6, r2 */
710 0xF4,0xD1, /* bne mainloop */
711 0x00,0xBE, /* bkpt #0 */
712 /* pFLASH_CTRL_BASE: */
713 0x00,0xD0,0x0F,0x40, /* .word 0x400FD000 */
715 0x01,0x00,0x42,0xA4 /* .word 0xA4420001 */
718 int stellaris_write_block(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 wcount
)
720 target_t
*target
= bank
->target
;
721 u32 buffer_size
= 8192;
722 working_area_t
*source
;
723 working_area_t
*write_algorithm
;
724 u32 address
= bank
->base
+ offset
;
725 reg_param_t reg_params
[8];
726 armv7m_algorithm_t armv7m_info
;
729 LOG_DEBUG("(bank=%p buffer=%p offset=%08X wcount=%08X)",
730 bank
, buffer
, offset
, wcount
);
732 /* flash write code */
733 if (target_alloc_working_area(target
, sizeof(stellaris_write_code
), &write_algorithm
) != ERROR_OK
)
735 LOG_WARNING("no working area available, can't do block memory writes");
736 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
739 target_write_buffer(target
, write_algorithm
->address
, sizeof(stellaris_write_code
), stellaris_write_code
);
742 while (target_alloc_working_area(target
, buffer_size
, &source
) != ERROR_OK
)
744 LOG_DEBUG("called target_alloc_working_area(target=%p buffer_size=%08X source=%p)",
745 target
, buffer_size
, source
);
747 if (buffer_size
<= 256)
749 /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
751 target_free_working_area(target
, write_algorithm
);
753 LOG_WARNING("no large enough working area available, can't do block memory writes");
754 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
758 armv7m_info
.common_magic
= ARMV7M_COMMON_MAGIC
;
759 armv7m_info
.core_mode
= ARMV7M_MODE_ANY
;
760 armv7m_info
.core_state
= ARMV7M_STATE_THUMB
;
762 init_reg_param(®_params
[0], "r0", 32, PARAM_OUT
);
763 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
);
764 init_reg_param(®_params
[2], "r2", 32, PARAM_OUT
);
765 init_reg_param(®_params
[3], "r3", 32, PARAM_OUT
);
766 init_reg_param(®_params
[4], "r4", 32, PARAM_OUT
);
767 init_reg_param(®_params
[5], "r5", 32, PARAM_OUT
);
768 init_reg_param(®_params
[6], "r6", 32, PARAM_OUT
);
769 init_reg_param(®_params
[7], "r7", 32, PARAM_OUT
);
773 u32 thisrun_count
= (wcount
> (buffer_size
/ 4)) ? (buffer_size
/ 4) : wcount
;
775 target_write_buffer(target
, source
->address
, thisrun_count
* 4, buffer
);
777 buf_set_u32(reg_params
[0].value
, 0, 32, source
->address
);
778 buf_set_u32(reg_params
[1].value
, 0, 32, address
);
779 buf_set_u32(reg_params
[2].value
, 0, 32, 4*thisrun_count
);
780 LOG_WARNING("Algorithm flash write %i words to 0x%x, %i remaining",thisrun_count
,address
, wcount
);
781 LOG_DEBUG("Algorithm flash write %i words to 0x%x, %i remaining",thisrun_count
,address
, wcount
);
782 if ((retval
= target
->type
->run_algorithm(target
, 0, NULL
, 3, reg_params
, write_algorithm
->address
, write_algorithm
->address
+ sizeof(stellaris_write_code
)-10, 10000, &armv7m_info
)) != ERROR_OK
)
784 LOG_ERROR("error executing stellaris flash write algorithm");
785 target_free_working_area(target
, source
);
786 destroy_reg_param(®_params
[0]);
787 destroy_reg_param(®_params
[1]);
788 destroy_reg_param(®_params
[2]);
789 return ERROR_FLASH_OPERATION_FAILED
;
792 buffer
+= thisrun_count
* 4;
793 address
+= thisrun_count
* 4;
794 wcount
-= thisrun_count
;
798 target_free_working_area(target
, write_algorithm
);
799 target_free_working_area(target
, source
);
801 destroy_reg_param(®_params
[0]);
802 destroy_reg_param(®_params
[1]);
803 destroy_reg_param(®_params
[2]);
804 destroy_reg_param(®_params
[3]);
805 destroy_reg_param(®_params
[4]);
806 destroy_reg_param(®_params
[5]);
807 destroy_reg_param(®_params
[6]);
808 destroy_reg_param(®_params
[7]);
813 int stellaris_write(struct flash_bank_s
*bank
, u8
*buffer
, u32 offset
, u32 count
)
815 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
816 target_t
*target
= bank
->target
;
817 u32 address
= offset
;
818 u32 flash_cris
,flash_fmc
;
821 if (bank
->target
->state
!= TARGET_HALTED
)
823 return ERROR_TARGET_NOT_HALTED
;
826 LOG_DEBUG("(bank=%p buffer=%p offset=%08X count=%08X)",
827 bank
, buffer
, offset
, count
);
829 if (stellaris_info
->did1
== 0)
831 stellaris_read_part_info(bank
);
834 if (stellaris_info
->did1
== 0)
836 LOG_WARNING("Cannot identify target as a Stellaris processor");
837 return ERROR_FLASH_OPERATION_FAILED
;
840 if((offset
& 3) || (count
& 3))
842 LOG_WARNING("offset size must be word aligned");
843 return ERROR_FLASH_DST_BREAKS_ALIGNMENT
;
846 if (offset
+ count
> bank
->size
)
847 return ERROR_FLASH_DST_OUT_OF_BANK
;
849 /* Configure the flash controller timing */
850 stellaris_read_clock_info(bank
);
851 stellaris_set_flash_mode(bank
,0);
854 /* Clear and disable flash programming interrupts */
855 target_write_u32(target
, FLASH_CIM
, 0);
856 target_write_u32(target
, FLASH_MISC
, PMISC
|AMISC
);
858 /* multiple words to be programmed? */
861 /* try using a block write */
862 if ((retval
= stellaris_write_block(bank
, buffer
, offset
, count
/4)) != ERROR_OK
)
864 if (retval
== ERROR_TARGET_RESOURCE_NOT_AVAILABLE
)
866 /* if block write failed (no sufficient working area),
867 * we use normal (slow) single dword accesses */
868 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
870 else if (retval
== ERROR_FLASH_OPERATION_FAILED
)
872 /* if an error occured, we examine the reason, and quit */
873 target_read_u32(target
, FLASH_CRIS
, &flash_cris
);
875 LOG_ERROR("flash writing failed with CRIS: 0x%x", flash_cris
);
876 return ERROR_FLASH_OPERATION_FAILED
;
882 address
+= count
* 4;
891 if (!(address
&0xff)) LOG_DEBUG("0x%x",address
);
892 /* Program one word */
893 target_write_u32(target
, FLASH_FMA
, address
);
894 target_write_buffer(target
, FLASH_FMD
, 4, buffer
);
895 target_write_u32(target
, FLASH_FMC
, FMC_WRKEY
| FMC_WRITE
);
896 /* LOG_DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE); */
897 /* Wait until write complete */
900 target_read_u32(target
, FLASH_FMC
, &flash_fmc
);
902 while(flash_fmc
& FMC_WRITE
);
907 /* Check acess violations */
908 target_read_u32(target
, FLASH_CRIS
, &flash_cris
);
909 if(flash_cris
& (AMASK
))
911 LOG_DEBUG("flash_cris 0x%x", flash_cris
);
912 return ERROR_FLASH_OPERATION_FAILED
;
918 int stellaris_probe(struct flash_bank_s
*bank
)
920 /* we can't probe on an stellaris
921 * if this is an stellaris, it has the configured flash
924 if (bank
->target
->state
!= TARGET_HALTED
)
926 return ERROR_TARGET_NOT_HALTED
;
929 /* stellaris_read_part_info() already takes care about error checking and reporting */
930 return stellaris_read_part_info(bank
);
933 int stellaris_auto_probe(struct flash_bank_s
*bank
)
935 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
936 if (stellaris_info
->did1
)
938 return stellaris_probe(bank
);
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