1 /***************************************************************************
2 * Copyright (C) 2006 by Magnus Lundin *
5 * Copyright (C) 2008 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
24 /***************************************************************************
25 * STELLARIS is tested on LM3S811, LM3S6965
26 ***************************************************************************/
31 #include "stellaris.h"
33 #include "binarybuffer.h"
36 #define DID0_VER(did0) ((did0>>28)&0x07)
37 static int stellaris_register_commands(struct command_context_s
*cmd_ctx
);
38 static int stellaris_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
);
39 static int stellaris_erase(struct flash_bank_s
*bank
, int first
, int last
);
40 static int stellaris_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
);
41 static int stellaris_write(struct flash_bank_s
*bank
, uint8_t *buffer
, u32 offset
, u32 count
);
42 static int stellaris_auto_probe(struct flash_bank_s
*bank
);
43 static int stellaris_probe(struct flash_bank_s
*bank
);
44 static int stellaris_protect_check(struct flash_bank_s
*bank
);
45 static int stellaris_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
);
47 static int stellaris_read_part_info(struct flash_bank_s
*bank
);
48 static u32
stellaris_get_flash_status(flash_bank_t
*bank
);
49 static void stellaris_set_flash_mode(flash_bank_t
*bank
,int mode
);
50 //static u32 stellaris_wait_status_busy(flash_bank_t *bank, u32 waitbits, int timeout);
52 static int stellaris_handle_mass_erase_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
);
53 static int stellaris_mass_erase(struct flash_bank_s
*bank
);
55 flash_driver_t stellaris_flash
=
58 .register_commands
= stellaris_register_commands
,
59 .flash_bank_command
= stellaris_flash_bank_command
,
60 .erase
= stellaris_erase
,
61 .protect
= stellaris_protect
,
62 .write
= stellaris_write
,
63 .probe
= stellaris_probe
,
64 .auto_probe
= stellaris_auto_probe
,
65 .erase_check
= default_flash_mem_blank_check
,
66 .protect_check
= stellaris_protect_check
,
67 .info
= stellaris_info
107 /*{0x33,"LM3S2616"},*/
226 static char * StellarisClassname
[5] =
235 /***************************************************************************
236 * openocd command interface *
237 ***************************************************************************/
239 /* flash_bank stellaris <base> <size> 0 0 <target#>
241 static int stellaris_flash_bank_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct flash_bank_s
*bank
)
243 stellaris_flash_bank_t
*stellaris_info
;
247 LOG_WARNING("incomplete flash_bank stellaris configuration");
248 return ERROR_FLASH_BANK_INVALID
;
251 stellaris_info
= calloc(sizeof(stellaris_flash_bank_t
), 1);
253 bank
->driver_priv
= stellaris_info
;
255 stellaris_info
->target_name
= "Unknown target";
257 /* part wasn't probed for info yet */
258 stellaris_info
->did1
= 0;
260 /* TODO Use an optional main oscillator clock rate in kHz from arg[6] */
264 static int stellaris_register_commands(struct command_context_s
*cmd_ctx
)
266 command_t
*stm32x_cmd
= register_command(cmd_ctx
, NULL
, "stellaris", NULL
, COMMAND_ANY
, "stellaris flash specific commands");
268 register_command(cmd_ctx
, stm32x_cmd
, "mass_erase", stellaris_handle_mass_erase_command
, COMMAND_EXEC
, "mass erase device");
272 static int stellaris_info(struct flash_bank_s
*bank
, char *buf
, int buf_size
)
274 int printed
, device_class
;
275 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
277 stellaris_read_part_info(bank
);
279 if (stellaris_info
->did1
== 0)
281 printed
= snprintf(buf
, buf_size
, "Cannot identify target as a Stellaris\n");
284 return ERROR_FLASH_OPERATION_FAILED
;
287 if (DID0_VER(stellaris_info
->did0
) > 0)
289 device_class
= (stellaris_info
->did0
>>16) & 0xFF;
295 printed
= snprintf(buf
, buf_size
, "\nLMI Stellaris information: Chip is class %i(%s) %s v%c.%i\n",
296 device_class
, StellarisClassname
[device_class
], stellaris_info
->target_name
,
297 'A' + ((stellaris_info
->did0
>>8) & 0xFF), (stellaris_info
->did0
) & 0xFF);
301 printed
= snprintf(buf
, buf_size
, "did1: 0x%8.8x, arch: 0x%4.4x, eproc: %s, ramsize:%ik, flashsize: %ik\n",
302 stellaris_info
->did1
, stellaris_info
->did1
, "ARMV7M", (1+((stellaris_info
->dc0
>>16) & 0xFFFF))/4, (1+(stellaris_info
->dc0
& 0xFFFF))*2);
306 printed
= snprintf(buf
, buf_size
, "master clock(estimated): %ikHz, rcc is 0x%x \n", stellaris_info
->mck_freq
/ 1000, stellaris_info
->rcc
);
310 if (stellaris_info
->num_lockbits
>0)
312 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
);
319 /***************************************************************************
320 * chip identification and status *
321 ***************************************************************************/
323 static u32
stellaris_get_flash_status(flash_bank_t
*bank
)
325 target_t
*target
= bank
->target
;
328 target_read_u32(target
, FLASH_CONTROL_BASE
|FLASH_FMC
, &fmc
);
333 /** Read clock configuration and set stellaris_info->usec_clocks*/
335 static void stellaris_read_clock_info(flash_bank_t
*bank
)
337 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
338 target_t
*target
= bank
->target
;
339 u32 rcc
, pllcfg
, sysdiv
, usesysdiv
, bypass
, oscsrc
;
340 unsigned long mainfreq
;
342 target_read_u32(target
, SCB_BASE
|RCC
, &rcc
);
343 LOG_DEBUG("Stellaris RCC %x", rcc
);
344 target_read_u32(target
, SCB_BASE
|PLLCFG
, &pllcfg
);
345 LOG_DEBUG("Stellaris PLLCFG %x", pllcfg
);
346 stellaris_info
->rcc
= rcc
;
348 sysdiv
= (rcc
>>23) & 0xF;
349 usesysdiv
= (rcc
>>22) & 0x1;
350 bypass
= (rcc
>>11) & 0x1;
351 oscsrc
= (rcc
>>4) & 0x3;
352 /* xtal = (rcc>>6)&0xF; */
356 mainfreq
= 6000000; /* Default xtal */
359 mainfreq
= 22500000; /* Internal osc. 15 MHz +- 50% */
362 mainfreq
= 5625000; /* Internal osc. / 4 */
365 LOG_WARNING("Invalid oscsrc (3) in rcc register");
369 default: /* NOTREACHED */
375 mainfreq
= 200000000; /* PLL out frec */
378 stellaris_info
->mck_freq
= mainfreq
/(1+sysdiv
);
380 stellaris_info
->mck_freq
= mainfreq
;
382 /* Forget old flash timing */
383 stellaris_set_flash_mode(bank
, 0);
386 /* Setup the timimg registers */
387 static void stellaris_set_flash_mode(flash_bank_t
*bank
,int mode
)
389 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
390 target_t
*target
= bank
->target
;
392 u32 usecrl
= (stellaris_info
->mck_freq
/1000000ul-1);
393 LOG_DEBUG("usecrl = %i",usecrl
);
394 target_write_u32(target
, SCB_BASE
|USECRL
, usecrl
);
398 static u32
stellaris_wait_status_busy(flash_bank_t
*bank
, u32 waitbits
, int timeout
)
402 /* Stellaris waits for cmdbit to clear */
403 while (((status
= stellaris_get_flash_status(bank
)) & waitbits
) && (timeout
-- > 0))
405 LOG_DEBUG("status: 0x%x", status
);
409 /* Flash errors are reflected in the FLASH_CRIS register */
414 /* Send one command to the flash controller */
415 static int stellaris_flash_command(struct flash_bank_s
*bank
,uint8_t cmd
,u16 pagen
)
418 target_t
*target
= bank
->target
;
420 fmc
= FMC_WRKEY
| cmd
;
421 target_write_u32(target
, FLASH_CONTROL_BASE
|FLASH_FMC
, fmc
);
422 LOG_DEBUG("Flash command: 0x%x", fmc
);
424 if (stellaris_wait_status_busy(bank
, cmd
, 100))
426 return ERROR_FLASH_OPERATION_FAILED
;
433 /* Read device id register, main clock frequency register and fill in driver info structure */
434 static int stellaris_read_part_info(struct flash_bank_s
*bank
)
436 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
437 target_t
*target
= bank
->target
;
438 u32 did0
, did1
, ver
, fam
, status
;
441 /* Read and parse chip identification register */
442 target_read_u32(target
, SCB_BASE
|DID0
, &did0
);
443 target_read_u32(target
, SCB_BASE
|DID1
, &did1
);
444 target_read_u32(target
, SCB_BASE
|DC0
, &stellaris_info
->dc0
);
445 target_read_u32(target
, SCB_BASE
|DC1
, &stellaris_info
->dc1
);
446 LOG_DEBUG("did0 0x%x, did1 0x%x, dc0 0x%x, dc1 0x%x", did0
, did1
, stellaris_info
->dc0
, stellaris_info
->dc1
);
449 if((ver
!= 0) && (ver
!= 1))
451 LOG_WARNING("Unknown did0 version, cannot identify target");
452 return ERROR_FLASH_OPERATION_FAILED
;
457 LOG_WARNING("Cannot identify target as a Stellaris");
458 return ERROR_FLASH_OPERATION_FAILED
;
462 fam
= (did1
>> 24) & 0xF;
463 if(((ver
!= 0) && (ver
!= 1)) || (fam
!= 0))
465 LOG_WARNING("Unknown did1 version/family, cannot positively identify target as a Stellaris");
468 for (i
= 0; StellarisParts
[i
].partno
; i
++)
470 if (StellarisParts
[i
].partno
== ((did1
>> 16) & 0xFF))
474 stellaris_info
->target_name
= StellarisParts
[i
].partname
;
476 stellaris_info
->did0
= did0
;
477 stellaris_info
->did1
= did1
;
479 stellaris_info
->num_lockbits
= 1 + (stellaris_info
->dc0
& 0xFFFF);
480 stellaris_info
->num_pages
= 2 *(1+(stellaris_info
->dc0
& 0xFFFF));
481 stellaris_info
->pagesize
= 1024;
482 bank
->size
= 1024 * stellaris_info
->num_pages
;
483 stellaris_info
->pages_in_lockregion
= 2;
484 target_read_u32(target
, SCB_BASE
|FMPPE
, &stellaris_info
->lockbits
);
486 /* provide this for the benefit of the higher flash driver layers */
487 bank
->num_sectors
= stellaris_info
->num_pages
;
488 bank
->sectors
= malloc(sizeof(flash_sector_t
) * bank
->num_sectors
);
489 for (i
= 0; i
< bank
->num_sectors
; i
++)
491 bank
->sectors
[i
].offset
= i
* stellaris_info
->pagesize
;
492 bank
->sectors
[i
].size
= stellaris_info
->pagesize
;
493 bank
->sectors
[i
].is_erased
= -1;
494 bank
->sectors
[i
].is_protected
= -1;
497 /* Read main and master clock freqency register */
498 stellaris_read_clock_info(bank
);
500 status
= stellaris_get_flash_status(bank
);
505 /***************************************************************************
507 ***************************************************************************/
509 static int stellaris_protect_check(struct flash_bank_s
*bank
)
513 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
515 if (bank
->target
->state
!= TARGET_HALTED
)
517 LOG_ERROR("Target not halted");
518 return ERROR_TARGET_NOT_HALTED
;
521 if (stellaris_info
->did1
== 0)
523 stellaris_read_part_info(bank
);
526 if (stellaris_info
->did1
== 0)
528 LOG_WARNING("Cannot identify target as an AT91SAM");
529 return ERROR_FLASH_OPERATION_FAILED
;
532 status
= stellaris_get_flash_status(bank
);
533 stellaris_info
->lockbits
= status
>> 16;
538 static int stellaris_erase(struct flash_bank_s
*bank
, int first
, int last
)
541 u32 flash_fmc
, flash_cris
;
542 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
543 target_t
*target
= bank
->target
;
545 if (bank
->target
->state
!= TARGET_HALTED
)
547 LOG_ERROR("Target not halted");
548 return ERROR_TARGET_NOT_HALTED
;
551 if (stellaris_info
->did1
== 0)
553 stellaris_read_part_info(bank
);
556 if (stellaris_info
->did1
== 0)
558 LOG_WARNING("Cannot identify target as Stellaris");
559 return ERROR_FLASH_OPERATION_FAILED
;
562 if ((first
< 0) || (last
< first
) || (last
>= (int)stellaris_info
->num_pages
))
564 return ERROR_FLASH_SECTOR_INVALID
;
567 if ((first
== 0) && (last
== ((int)stellaris_info
->num_pages
-1)))
569 return stellaris_mass_erase(bank
);
572 /* Configure the flash controller timing */
573 stellaris_read_clock_info(bank
);
574 stellaris_set_flash_mode(bank
,0);
576 /* Clear and disable flash programming interrupts */
577 target_write_u32(target
, FLASH_CIM
, 0);
578 target_write_u32(target
, FLASH_MISC
, PMISC
|AMISC
);
580 for (banknr
= first
; banknr
<= last
; banknr
++)
582 /* Address is first word in page */
583 target_write_u32(target
, FLASH_FMA
, banknr
* stellaris_info
->pagesize
);
584 /* Write erase command */
585 target_write_u32(target
, FLASH_FMC
, FMC_WRKEY
| FMC_ERASE
);
586 /* Wait until erase complete */
589 target_read_u32(target
, FLASH_FMC
, &flash_fmc
);
591 while(flash_fmc
& FMC_ERASE
);
593 /* Check acess violations */
594 target_read_u32(target
, FLASH_CRIS
, &flash_cris
);
595 if(flash_cris
& (AMASK
))
597 LOG_WARNING("Error erasing flash page %i, flash_cris 0x%x", banknr
, flash_cris
);
598 target_write_u32(target
, FLASH_CRIS
, 0);
599 return ERROR_FLASH_OPERATION_FAILED
;
602 bank
->sectors
[banknr
].is_erased
= 1;
608 static int stellaris_protect(struct flash_bank_s
*bank
, int set
, int first
, int last
)
610 u32 fmppe
, flash_fmc
, flash_cris
;
613 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
614 target_t
*target
= bank
->target
;
616 if (bank
->target
->state
!= TARGET_HALTED
)
618 LOG_ERROR("Target not halted");
619 return ERROR_TARGET_NOT_HALTED
;
622 if ((first
< 0) || (last
< first
) || (last
>= stellaris_info
->num_lockbits
))
624 return ERROR_FLASH_SECTOR_INVALID
;
627 if (stellaris_info
->did1
== 0)
629 stellaris_read_part_info(bank
);
632 if (stellaris_info
->did1
== 0)
634 LOG_WARNING("Cannot identify target as an Stellaris MCU");
635 return ERROR_FLASH_OPERATION_FAILED
;
638 /* Configure the flash controller timing */
639 stellaris_read_clock_info(bank
);
640 stellaris_set_flash_mode(bank
, 0);
642 fmppe
= stellaris_info
->lockbits
;
643 for (lockregion
= first
; lockregion
<= last
; lockregion
++)
646 fmppe
&= ~(1<<lockregion
);
648 fmppe
|= (1<<lockregion
);
651 /* Clear and disable flash programming interrupts */
652 target_write_u32(target
, FLASH_CIM
, 0);
653 target_write_u32(target
, FLASH_MISC
, PMISC
|AMISC
);
655 LOG_DEBUG("fmppe 0x%x",fmppe
);
656 target_write_u32(target
, SCB_BASE
|FMPPE
, fmppe
);
658 target_write_u32(target
, FLASH_FMA
, 1);
659 /* Write commit command */
660 /* TODO safety check, sice this cannot be undone */
661 LOG_WARNING("Flash protection cannot be removed once commited, commit is NOT executed !");
662 /* target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_COMT); */
663 /* Wait until erase complete */
666 target_read_u32(target
, FLASH_FMC
, &flash_fmc
);
668 while(flash_fmc
& FMC_COMT
);
670 /* Check acess violations */
671 target_read_u32(target
, FLASH_CRIS
, &flash_cris
);
672 if(flash_cris
& (AMASK
))
674 LOG_WARNING("Error setting flash page protection, flash_cris 0x%x", flash_cris
);
675 target_write_u32(target
, FLASH_CRIS
, 0);
676 return ERROR_FLASH_OPERATION_FAILED
;
679 target_read_u32(target
, SCB_BASE
|FMPPE
, &stellaris_info
->lockbits
);
684 static uint8_t stellaris_write_code
[] =
689 r1 = destination address
690 r2 = bytecount (in) - endaddr (work)
693 r3 = pFLASH_CTRL_BASE
699 0x07,0x4B, /* ldr r3,pFLASH_CTRL_BASE */
700 0x08,0x4C, /* ldr r4,FLASHWRITECMD */
701 0x01,0x25, /* movs r5, 1 */
702 0x00,0x26, /* movs r6, #0 */
704 0x19,0x60, /* str r1, [r3, #0] */
705 0x87,0x59, /* ldr r7, [r0, r6] */
706 0x5F,0x60, /* str r7, [r3, #4] */
707 0x9C,0x60, /* str r4, [r3, #8] */
709 0x9F,0x68, /* ldr r7, [r3, #8] */
710 0x2F,0x42, /* tst r7, r5 */
711 0xFC,0xD1, /* bne waitloop */
712 0x04,0x31, /* adds r1, r1, #4 */
713 0x04,0x36, /* adds r6, r6, #4 */
714 0x96,0x42, /* cmp r6, r2 */
715 0xF4,0xD1, /* bne mainloop */
717 0xFE,0xE7, /* b exit */
718 /* pFLASH_CTRL_BASE: */
719 0x00,0xD0,0x0F,0x40, /* .word 0x400FD000 */
721 0x01,0x00,0x42,0xA4 /* .word 0xA4420001 */
724 static int stellaris_write_block(struct flash_bank_s
*bank
, uint8_t *buffer
, u32 offset
, u32 wcount
)
726 target_t
*target
= bank
->target
;
727 u32 buffer_size
= 8192;
728 working_area_t
*source
;
729 working_area_t
*write_algorithm
;
730 u32 address
= bank
->base
+ offset
;
731 reg_param_t reg_params
[3];
732 armv7m_algorithm_t armv7m_info
;
733 int retval
= ERROR_OK
;
735 LOG_DEBUG("(bank=%p buffer=%p offset=%08X wcount=%08X)",
736 bank
, buffer
, offset
, wcount
);
738 /* flash write code */
739 if (target_alloc_working_area(target
, sizeof(stellaris_write_code
), &write_algorithm
) != ERROR_OK
)
741 LOG_WARNING("no working area available, can't do block memory writes");
742 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
745 target_write_buffer(target
, write_algorithm
->address
, sizeof(stellaris_write_code
), stellaris_write_code
);
748 while (target_alloc_working_area(target
, buffer_size
, &source
) != ERROR_OK
)
750 LOG_DEBUG("called target_alloc_working_area(target=%p buffer_size=%08X source=%p)",
751 target
, buffer_size
, source
);
753 if (buffer_size
<= 256)
755 /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
757 target_free_working_area(target
, write_algorithm
);
759 LOG_WARNING("no large enough working area available, can't do block memory writes");
760 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE
;
764 armv7m_info
.common_magic
= ARMV7M_COMMON_MAGIC
;
765 armv7m_info
.core_mode
= ARMV7M_MODE_ANY
;
767 init_reg_param(®_params
[0], "r0", 32, PARAM_OUT
);
768 init_reg_param(®_params
[1], "r1", 32, PARAM_OUT
);
769 init_reg_param(®_params
[2], "r2", 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_INFO("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_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 retval
= ERROR_FLASH_OPERATION_FAILED
;
789 buffer
+= thisrun_count
* 4;
790 address
+= thisrun_count
* 4;
791 wcount
-= thisrun_count
;
794 target_free_working_area(target
, write_algorithm
);
795 target_free_working_area(target
, source
);
797 destroy_reg_param(®_params
[0]);
798 destroy_reg_param(®_params
[1]);
799 destroy_reg_param(®_params
[2]);
804 static int stellaris_write(struct flash_bank_s
*bank
, uint8_t *buffer
, u32 offset
, u32 count
)
806 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
807 target_t
*target
= bank
->target
;
808 u32 address
= offset
;
809 u32 flash_cris
, flash_fmc
;
810 u32 words_remaining
= (count
/ 4);
811 u32 bytes_remaining
= (count
& 0x00000003);
812 u32 bytes_written
= 0;
815 if (bank
->target
->state
!= TARGET_HALTED
)
817 LOG_ERROR("Target not halted");
818 return ERROR_TARGET_NOT_HALTED
;
821 LOG_DEBUG("(bank=%p buffer=%p offset=%08X count=%08X)",
822 bank
, buffer
, offset
, count
);
824 if (stellaris_info
->did1
== 0)
826 stellaris_read_part_info(bank
);
829 if (stellaris_info
->did1
== 0)
831 LOG_WARNING("Cannot identify target as a Stellaris processor");
832 return ERROR_FLASH_OPERATION_FAILED
;
837 LOG_WARNING("offset size must be word aligned");
838 return ERROR_FLASH_DST_BREAKS_ALIGNMENT
;
841 if (offset
+ count
> bank
->size
)
842 return ERROR_FLASH_DST_OUT_OF_BANK
;
844 /* Configure the flash controller timing */
845 stellaris_read_clock_info(bank
);
846 stellaris_set_flash_mode(bank
, 0);
848 /* Clear and disable flash programming interrupts */
849 target_write_u32(target
, FLASH_CIM
, 0);
850 target_write_u32(target
, FLASH_MISC
, PMISC
|AMISC
);
852 /* multiple words to be programmed? */
853 if (words_remaining
> 0)
855 /* try using a block write */
856 if ((retval
= stellaris_write_block(bank
, buffer
, offset
, words_remaining
)) != ERROR_OK
)
858 if (retval
== ERROR_TARGET_RESOURCE_NOT_AVAILABLE
)
860 /* if block write failed (no sufficient working area),
861 * we use normal (slow) single dword accesses */
862 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
864 else if (retval
== ERROR_FLASH_OPERATION_FAILED
)
866 /* if an error occured, we examine the reason, and quit */
867 target_read_u32(target
, FLASH_CRIS
, &flash_cris
);
869 LOG_ERROR("flash writing failed with CRIS: 0x%x", flash_cris
);
870 return ERROR_FLASH_OPERATION_FAILED
;
875 buffer
+= words_remaining
* 4;
876 address
+= words_remaining
* 4;
881 while (words_remaining
> 0)
883 if (!(address
& 0xff))
884 LOG_DEBUG("0x%x", address
);
886 /* Program one word */
887 target_write_u32(target
, FLASH_FMA
, address
);
888 target_write_buffer(target
, FLASH_FMD
, 4, buffer
);
889 target_write_u32(target
, FLASH_FMC
, FMC_WRKEY
| FMC_WRITE
);
890 /* LOG_DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE); */
891 /* Wait until write complete */
894 target_read_u32(target
, FLASH_FMC
, &flash_fmc
);
895 } while (flash_fmc
& FMC_WRITE
);
904 uint8_t last_word
[4] = {0xff, 0xff, 0xff, 0xff};
907 while(bytes_remaining
> 0)
909 last_word
[i
++] = *(buffer
+ bytes_written
);
914 if (!(address
& 0xff))
915 LOG_DEBUG("0x%x", address
);
917 /* Program one word */
918 target_write_u32(target
, FLASH_FMA
, address
);
919 target_write_buffer(target
, FLASH_FMD
, 4, last_word
);
920 target_write_u32(target
, FLASH_FMC
, FMC_WRKEY
| FMC_WRITE
);
921 /* LOG_DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE); */
922 /* Wait until write complete */
925 target_read_u32(target
, FLASH_FMC
, &flash_fmc
);
926 } while (flash_fmc
& FMC_WRITE
);
929 /* Check access violations */
930 target_read_u32(target
, FLASH_CRIS
, &flash_cris
);
931 if (flash_cris
& (AMASK
))
933 LOG_DEBUG("flash_cris 0x%x", flash_cris
);
934 return ERROR_FLASH_OPERATION_FAILED
;
939 static int stellaris_probe(struct flash_bank_s
*bank
)
941 /* we can't probe on an stellaris
942 * if this is an stellaris, it has the configured flash
945 if (bank
->target
->state
!= TARGET_HALTED
)
947 LOG_ERROR("Target not halted");
948 return ERROR_TARGET_NOT_HALTED
;
951 /* stellaris_read_part_info() already takes care about error checking and reporting */
952 return stellaris_read_part_info(bank
);
955 static int stellaris_auto_probe(struct flash_bank_s
*bank
)
957 stellaris_flash_bank_t
*stellaris_info
= bank
->driver_priv
;
958 if (stellaris_info
->did1
)
960 return stellaris_probe(bank
);
963 static int stellaris_mass_erase(struct flash_bank_s
*bank
)
965 target_t
*target
= NULL
;
966 stellaris_flash_bank_t
*stellaris_info
= NULL
;
969 stellaris_info
= bank
->driver_priv
;
970 target
= bank
->target
;
972 if (target
->state
!= TARGET_HALTED
)
974 LOG_ERROR("Target not halted");
975 return ERROR_TARGET_NOT_HALTED
;
978 if (stellaris_info
->did1
== 0)
980 stellaris_read_part_info(bank
);
983 if (stellaris_info
->did1
== 0)
985 LOG_WARNING("Cannot identify target as Stellaris");
986 return ERROR_FLASH_OPERATION_FAILED
;
989 /* Configure the flash controller timing */
990 stellaris_read_clock_info(bank
);
991 stellaris_set_flash_mode(bank
, 0);
993 /* Clear and disable flash programming interrupts */
994 target_write_u32(target
, FLASH_CIM
, 0);
995 target_write_u32(target
, FLASH_MISC
, PMISC
|AMISC
);
997 target_write_u32(target
, FLASH_FMA
, 0);
998 target_write_u32(target
, FLASH_FMC
, FMC_WRKEY
| FMC_MERASE
);
999 /* Wait until erase complete */
1002 target_read_u32(target
, FLASH_FMC
, &flash_fmc
);
1004 while (flash_fmc
& FMC_MERASE
);
1006 /* if device has > 128k, then second erase cycle is needed
1007 * this is only valid for older devices, but will not hurt */
1008 if (stellaris_info
->num_pages
* stellaris_info
->pagesize
> 0x20000)
1010 target_write_u32(target
, FLASH_FMA
, 0x20000);
1011 target_write_u32(target
, FLASH_FMC
, FMC_WRKEY
| FMC_MERASE
);
1012 /* Wait until erase complete */
1015 target_read_u32(target
, FLASH_FMC
, &flash_fmc
);
1017 while (flash_fmc
& FMC_MERASE
);
1023 static int stellaris_handle_mass_erase_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
1030 command_print(cmd_ctx
, "stellaris mass_erase <bank>");
1034 bank
= get_flash_bank_by_num(strtoul(args
[0], NULL
, 0));
1037 command_print(cmd_ctx
, "flash bank '#%s' is out of bounds", args
[0]);
1041 if (stellaris_mass_erase(bank
) == ERROR_OK
)
1043 /* set all sectors as erased */
1044 for (i
= 0; i
< bank
->num_sectors
; i
++)
1046 bank
->sectors
[i
].is_erased
= 1;
1049 command_print(cmd_ctx
, "stellaris mass erase complete");
1053 command_print(cmd_ctx
, "stellaris mass erase failed");