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 "replacements.h"
33 #include "stellaris.h"
34 #include "cortex_m3.h"
39 #include "binarybuffer.h"
46 #define DID0_VER(did0) ((did0>>28)&0x07)
47 static int stellaris_register_commands(struct command_context_s *cmd_ctx);
48 static int stellaris_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
49 static int stellaris_erase(struct flash_bank_s *bank, int first, int last);
50 static int stellaris_protect(struct flash_bank_s *bank, int set, int first, int last);
51 static int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
52 static int stellaris_auto_probe(struct flash_bank_s *bank);
53 static int stellaris_probe(struct flash_bank_s *bank);
54 static int stellaris_protect_check(struct flash_bank_s *bank);
55 static int stellaris_info(struct flash_bank_s *bank, char *buf, int buf_size);
57 static int stellaris_read_part_info(struct flash_bank_s *bank);
58 static u32 stellaris_get_flash_status(flash_bank_t *bank);
59 static void stellaris_set_flash_mode(flash_bank_t *bank,int mode);
60 //static u32 stellaris_wait_status_busy(flash_bank_t *bank, u32 waitbits, int timeout);
62 static int stellaris_handle_mass_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
63 static int stellaris_mass_erase(struct flash_bank_s *bank);
65 flash_driver_t stellaris_flash =
68 .register_commands = stellaris_register_commands,
69 .flash_bank_command = stellaris_flash_bank_command,
70 .erase = stellaris_erase,
71 .protect = stellaris_protect,
72 .write = stellaris_write,
73 .probe = stellaris_probe,
74 .auto_probe = stellaris_auto_probe,
75 .erase_check = default_flash_mem_blank_check,
76 .protect_check = stellaris_protect_check,
77 .info = stellaris_info
117 /*{0x33,"LM3S2616"},*/
236 static char * StellarisClassname[5] =
245 /***************************************************************************
246 * openocd command interface *
247 ***************************************************************************/
249 /* flash_bank stellaris <base> <size> 0 0 <target#>
251 static int stellaris_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
253 stellaris_flash_bank_t *stellaris_info;
257 LOG_WARNING("incomplete flash_bank stellaris configuration");
258 return ERROR_FLASH_BANK_INVALID;
261 stellaris_info = calloc(sizeof(stellaris_flash_bank_t), 1);
263 bank->driver_priv = stellaris_info;
265 stellaris_info->target_name = "Unknown target";
267 /* part wasn't probed for info yet */
268 stellaris_info->did1 = 0;
270 /* TODO Use an optional main oscillator clock rate in kHz from arg[6] */
274 static int stellaris_register_commands(struct command_context_s *cmd_ctx)
276 command_t *stm32x_cmd = register_command(cmd_ctx, NULL, "stellaris", NULL, COMMAND_ANY, "stellaris flash specific commands");
278 register_command(cmd_ctx, stm32x_cmd, "mass_erase", stellaris_handle_mass_erase_command, COMMAND_EXEC, "mass erase device");
282 static int stellaris_info(struct flash_bank_s *bank, char *buf, int buf_size)
284 int printed, device_class;
285 stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
287 stellaris_read_part_info(bank);
289 if (stellaris_info->did1 == 0)
291 printed = snprintf(buf, buf_size, "Cannot identify target as a Stellaris\n");
294 return ERROR_FLASH_OPERATION_FAILED;
297 if (DID0_VER(stellaris_info->did0) > 0)
299 device_class = (stellaris_info->did0>>16) & 0xFF;
305 printed = snprintf(buf, buf_size, "\nLMI Stellaris information: Chip is class %i(%s) %s v%c.%i\n",
306 device_class, StellarisClassname[device_class], stellaris_info->target_name,
307 'A' + ((stellaris_info->did0>>8) & 0xFF), (stellaris_info->did0) & 0xFF);
311 printed = snprintf(buf, buf_size, "did1: 0x%8.8x, arch: 0x%4.4x, eproc: %s, ramsize:%ik, flashsize: %ik\n",
312 stellaris_info->did1, stellaris_info->did1, "ARMV7M", (1+((stellaris_info->dc0>>16) & 0xFFFF))/4, (1+(stellaris_info->dc0 & 0xFFFF))*2);
316 printed = snprintf(buf, buf_size, "master clock(estimated): %ikHz, rcc is 0x%x \n", stellaris_info->mck_freq / 1000, stellaris_info->rcc);
320 if (stellaris_info->num_lockbits>0)
322 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);
329 /***************************************************************************
330 * chip identification and status *
331 ***************************************************************************/
333 static u32 stellaris_get_flash_status(flash_bank_t *bank)
335 target_t *target = bank->target;
338 target_read_u32(target, FLASH_CONTROL_BASE|FLASH_FMC, &fmc);
343 /** Read clock configuration and set stellaris_info->usec_clocks*/
345 static void stellaris_read_clock_info(flash_bank_t *bank)
347 stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
348 target_t *target = bank->target;
349 u32 rcc, pllcfg, sysdiv, usesysdiv, bypass, oscsrc;
350 unsigned long mainfreq;
352 target_read_u32(target, SCB_BASE|RCC, &rcc);
353 LOG_DEBUG("Stellaris RCC %x", rcc);
354 target_read_u32(target, SCB_BASE|PLLCFG, &pllcfg);
355 LOG_DEBUG("Stellaris PLLCFG %x", pllcfg);
356 stellaris_info->rcc = rcc;
358 sysdiv = (rcc>>23) & 0xF;
359 usesysdiv = (rcc>>22) & 0x1;
360 bypass = (rcc>>11) & 0x1;
361 oscsrc = (rcc>>4) & 0x3;
362 /* xtal = (rcc>>6)&0xF; */
366 mainfreq = 6000000; /* Default xtal */
369 mainfreq = 22500000; /* Internal osc. 15 MHz +- 50% */
372 mainfreq = 5625000; /* Internal osc. / 4 */
375 LOG_WARNING("Invalid oscsrc (3) in rcc register");
379 default: /* NOTREACHED */
385 mainfreq = 200000000; /* PLL out frec */
388 stellaris_info->mck_freq = mainfreq/(1+sysdiv);
390 stellaris_info->mck_freq = mainfreq;
392 /* Forget old flash timing */
393 stellaris_set_flash_mode(bank, 0);
396 /* Setup the timimg registers */
397 static void stellaris_set_flash_mode(flash_bank_t *bank,int mode)
399 stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
400 target_t *target = bank->target;
402 u32 usecrl = (stellaris_info->mck_freq/1000000ul-1);
403 LOG_DEBUG("usecrl = %i",usecrl);
404 target_write_u32(target, SCB_BASE|USECRL, usecrl);
408 static u32 stellaris_wait_status_busy(flash_bank_t *bank, u32 waitbits, int timeout)
412 /* Stellaris waits for cmdbit to clear */
413 while (((status = stellaris_get_flash_status(bank)) & waitbits) && (timeout-- > 0))
415 LOG_DEBUG("status: 0x%x", status);
419 /* Flash errors are reflected in the FLASH_CRIS register */
424 /* Send one command to the flash controller */
425 static int stellaris_flash_command(struct flash_bank_s *bank,u8 cmd,u16 pagen)
428 target_t *target = bank->target;
430 fmc = FMC_WRKEY | cmd;
431 target_write_u32(target, FLASH_CONTROL_BASE|FLASH_FMC, fmc);
432 LOG_DEBUG("Flash command: 0x%x", fmc);
434 if (stellaris_wait_status_busy(bank, cmd, 100))
436 return ERROR_FLASH_OPERATION_FAILED;
443 /* Read device id register, main clock frequency register and fill in driver info structure */
444 static int stellaris_read_part_info(struct flash_bank_s *bank)
446 stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
447 target_t *target = bank->target;
448 u32 did0, did1, ver, fam, status;
451 /* Read and parse chip identification register */
452 target_read_u32(target, SCB_BASE|DID0, &did0);
453 target_read_u32(target, SCB_BASE|DID1, &did1);
454 target_read_u32(target, SCB_BASE|DC0, &stellaris_info->dc0);
455 target_read_u32(target, SCB_BASE|DC1, &stellaris_info->dc1);
456 LOG_DEBUG("did0 0x%x, did1 0x%x, dc0 0x%x, dc1 0x%x", did0, did1, stellaris_info->dc0, stellaris_info->dc1);
459 if((ver != 0) && (ver != 1))
461 LOG_WARNING("Unknown did0 version, cannot identify target");
462 return ERROR_FLASH_OPERATION_FAILED;
467 LOG_WARNING("Cannot identify target as a Stellaris");
468 return ERROR_FLASH_OPERATION_FAILED;
472 fam = (did1 >> 24) & 0xF;
473 if(((ver != 0) && (ver != 1)) || (fam != 0))
475 LOG_WARNING("Unknown did1 version/family, cannot positively identify target as a Stellaris");
478 for (i = 0; StellarisParts[i].partno; i++)
480 if (StellarisParts[i].partno == ((did1 >> 16) & 0xFF))
484 stellaris_info->target_name = StellarisParts[i].partname;
486 stellaris_info->did0 = did0;
487 stellaris_info->did1 = did1;
489 stellaris_info->num_lockbits = 1 + (stellaris_info->dc0 & 0xFFFF);
490 stellaris_info->num_pages = 2 *(1+(stellaris_info->dc0 & 0xFFFF));
491 stellaris_info->pagesize = 1024;
492 bank->size = 1024 * stellaris_info->num_pages;
493 stellaris_info->pages_in_lockregion = 2;
494 target_read_u32(target, SCB_BASE|FMPPE, &stellaris_info->lockbits);
496 /* provide this for the benefit of the higher flash driver layers */
497 bank->num_sectors = stellaris_info->num_pages;
498 bank->sectors = malloc(sizeof(flash_sector_t) * bank->num_sectors);
499 for (i = 0; i < bank->num_sectors; i++)
501 bank->sectors[i].offset = i * stellaris_info->pagesize;
502 bank->sectors[i].size = stellaris_info->pagesize;
503 bank->sectors[i].is_erased = -1;
504 bank->sectors[i].is_protected = -1;
507 /* Read main and master clock freqency register */
508 stellaris_read_clock_info(bank);
510 status = stellaris_get_flash_status(bank);
515 /***************************************************************************
517 ***************************************************************************/
519 static int stellaris_protect_check(struct flash_bank_s *bank)
523 stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
525 if (bank->target->state != TARGET_HALTED)
527 LOG_ERROR("Target not halted");
528 return ERROR_TARGET_NOT_HALTED;
531 if (stellaris_info->did1 == 0)
533 stellaris_read_part_info(bank);
536 if (stellaris_info->did1 == 0)
538 LOG_WARNING("Cannot identify target as an AT91SAM");
539 return ERROR_FLASH_OPERATION_FAILED;
542 status = stellaris_get_flash_status(bank);
543 stellaris_info->lockbits = status >> 16;
548 static int stellaris_erase(struct flash_bank_s *bank, int first, int last)
551 u32 flash_fmc, flash_cris;
552 stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
553 target_t *target = bank->target;
555 if (bank->target->state != TARGET_HALTED)
557 LOG_ERROR("Target not halted");
558 return ERROR_TARGET_NOT_HALTED;
561 if (stellaris_info->did1 == 0)
563 stellaris_read_part_info(bank);
566 if (stellaris_info->did1 == 0)
568 LOG_WARNING("Cannot identify target as Stellaris");
569 return ERROR_FLASH_OPERATION_FAILED;
572 if ((first < 0) || (last < first) || (last >= (int)stellaris_info->num_pages))
574 return ERROR_FLASH_SECTOR_INVALID;
577 if ((first == 0) && (last == ((int)stellaris_info->num_pages-1)))
579 return stellaris_mass_erase(bank);
582 /* Configure the flash controller timing */
583 stellaris_read_clock_info(bank);
584 stellaris_set_flash_mode(bank,0);
586 /* Clear and disable flash programming interrupts */
587 target_write_u32(target, FLASH_CIM, 0);
588 target_write_u32(target, FLASH_MISC, PMISC|AMISC);
590 for (banknr = first; banknr <= last; banknr++)
592 /* Address is first word in page */
593 target_write_u32(target, FLASH_FMA, banknr * stellaris_info->pagesize);
594 /* Write erase command */
595 target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_ERASE);
596 /* Wait until erase complete */
599 target_read_u32(target, FLASH_FMC, &flash_fmc);
601 while(flash_fmc & FMC_ERASE);
603 /* Check acess violations */
604 target_read_u32(target, FLASH_CRIS, &flash_cris);
605 if(flash_cris & (AMASK))
607 LOG_WARNING("Error erasing flash page %i, flash_cris 0x%x", banknr, flash_cris);
608 target_write_u32(target, FLASH_CRIS, 0);
609 return ERROR_FLASH_OPERATION_FAILED;
612 bank->sectors[banknr].is_erased = 1;
618 static int stellaris_protect(struct flash_bank_s *bank, int set, int first, int last)
620 u32 fmppe, flash_fmc, flash_cris;
623 stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
624 target_t *target = bank->target;
626 if (bank->target->state != TARGET_HALTED)
628 LOG_ERROR("Target not halted");
629 return ERROR_TARGET_NOT_HALTED;
632 if ((first < 0) || (last < first) || (last >= stellaris_info->num_lockbits))
634 return ERROR_FLASH_SECTOR_INVALID;
637 if (stellaris_info->did1 == 0)
639 stellaris_read_part_info(bank);
642 if (stellaris_info->did1 == 0)
644 LOG_WARNING("Cannot identify target as an Stellaris MCU");
645 return ERROR_FLASH_OPERATION_FAILED;
648 /* Configure the flash controller timing */
649 stellaris_read_clock_info(bank);
650 stellaris_set_flash_mode(bank, 0);
652 fmppe = stellaris_info->lockbits;
653 for (lockregion = first; lockregion <= last; lockregion++)
656 fmppe &= ~(1<<lockregion);
658 fmppe |= (1<<lockregion);
661 /* Clear and disable flash programming interrupts */
662 target_write_u32(target, FLASH_CIM, 0);
663 target_write_u32(target, FLASH_MISC, PMISC|AMISC);
665 LOG_DEBUG("fmppe 0x%x",fmppe);
666 target_write_u32(target, SCB_BASE|FMPPE, fmppe);
668 target_write_u32(target, FLASH_FMA, 1);
669 /* Write commit command */
670 /* TODO safety check, sice this cannot be undone */
671 LOG_WARNING("Flash protection cannot be removed once commited, commit is NOT executed !");
672 /* target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_COMT); */
673 /* Wait until erase complete */
676 target_read_u32(target, FLASH_FMC, &flash_fmc);
678 while(flash_fmc & FMC_COMT);
680 /* Check acess violations */
681 target_read_u32(target, FLASH_CRIS, &flash_cris);
682 if(flash_cris & (AMASK))
684 LOG_WARNING("Error setting flash page protection, flash_cris 0x%x", flash_cris);
685 target_write_u32(target, FLASH_CRIS, 0);
686 return ERROR_FLASH_OPERATION_FAILED;
689 target_read_u32(target, SCB_BASE|FMPPE, &stellaris_info->lockbits);
694 static u8 stellaris_write_code[] =
699 r1 = destination address
700 r2 = bytecount (in) - endaddr (work)
703 r3 = pFLASH_CTRL_BASE
709 0x07,0x4B, /* ldr r3,pFLASH_CTRL_BASE */
710 0x08,0x4C, /* ldr r4,FLASHWRITECMD */
711 0x01,0x25, /* movs r5, 1 */
712 0x00,0x26, /* movs r6, #0 */
714 0x19,0x60, /* str r1, [r3, #0] */
715 0x87,0x59, /* ldr r7, [r0, r6] */
716 0x5F,0x60, /* str r7, [r3, #4] */
717 0x9C,0x60, /* str r4, [r3, #8] */
719 0x9F,0x68, /* ldr r7, [r3, #8] */
720 0x2F,0x42, /* tst r7, r5 */
721 0xFC,0xD1, /* bne waitloop */
722 0x04,0x31, /* adds r1, r1, #4 */
723 0x04,0x36, /* adds r6, r6, #4 */
724 0x96,0x42, /* cmp r6, r2 */
725 0xF4,0xD1, /* bne mainloop */
727 0xFE,0xE7, /* b exit */
728 /* pFLASH_CTRL_BASE: */
729 0x00,0xD0,0x0F,0x40, /* .word 0x400FD000 */
731 0x01,0x00,0x42,0xA4 /* .word 0xA4420001 */
734 static int stellaris_write_block(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 wcount)
736 target_t *target = bank->target;
737 u32 buffer_size = 8192;
738 working_area_t *source;
739 working_area_t *write_algorithm;
740 u32 address = bank->base + offset;
741 reg_param_t reg_params[3];
742 armv7m_algorithm_t armv7m_info;
743 int retval = ERROR_OK;
745 LOG_DEBUG("(bank=%p buffer=%p offset=%08X wcount=%08X)",
746 bank, buffer, offset, wcount);
748 /* flash write code */
749 if (target_alloc_working_area(target, sizeof(stellaris_write_code), &write_algorithm) != ERROR_OK)
751 LOG_WARNING("no working area available, can't do block memory writes");
752 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
755 target_write_buffer(target, write_algorithm->address, sizeof(stellaris_write_code), stellaris_write_code);
758 while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
760 LOG_DEBUG("called target_alloc_working_area(target=%p buffer_size=%08X source=%p)",
761 target, buffer_size, source);
763 if (buffer_size <= 256)
765 /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
767 target_free_working_area(target, write_algorithm);
769 LOG_WARNING("no large enough working area available, can't do block memory writes");
770 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
774 armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
775 armv7m_info.core_mode = ARMV7M_MODE_ANY;
777 init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
778 init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
779 init_reg_param(®_params[2], "r2", 32, PARAM_OUT);
783 u32 thisrun_count = (wcount > (buffer_size / 4)) ? (buffer_size / 4) : wcount;
785 target_write_buffer(target, source->address, thisrun_count * 4, buffer);
787 buf_set_u32(reg_params[0].value, 0, 32, source->address);
788 buf_set_u32(reg_params[1].value, 0, 32, address);
789 buf_set_u32(reg_params[2].value, 0, 32, 4*thisrun_count);
790 LOG_INFO("Algorithm flash write %i words to 0x%x, %i remaining", thisrun_count, address, wcount);
791 LOG_DEBUG("Algorithm flash write %i words to 0x%x, %i remaining", thisrun_count, address, wcount);
792 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)
794 LOG_ERROR("error executing stellaris flash write algorithm");
795 retval = ERROR_FLASH_OPERATION_FAILED;
799 buffer += thisrun_count * 4;
800 address += thisrun_count * 4;
801 wcount -= thisrun_count;
804 target_free_working_area(target, write_algorithm);
805 target_free_working_area(target, source);
807 destroy_reg_param(®_params[0]);
808 destroy_reg_param(®_params[1]);
809 destroy_reg_param(®_params[2]);
814 static int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
816 stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
817 target_t *target = bank->target;
818 u32 address = offset;
819 u32 flash_cris, flash_fmc;
820 u32 words_remaining = (count / 4);
821 u32 bytes_remaining = (count & 0x00000003);
822 u32 bytes_written = 0;
825 if (bank->target->state != TARGET_HALTED)
827 LOG_ERROR("Target not halted");
828 return ERROR_TARGET_NOT_HALTED;
831 LOG_DEBUG("(bank=%p buffer=%p offset=%08X count=%08X)",
832 bank, buffer, offset, count);
834 if (stellaris_info->did1 == 0)
836 stellaris_read_part_info(bank);
839 if (stellaris_info->did1 == 0)
841 LOG_WARNING("Cannot identify target as a Stellaris processor");
842 return ERROR_FLASH_OPERATION_FAILED;
847 LOG_WARNING("offset size must be word aligned");
848 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
851 if (offset + count > bank->size)
852 return ERROR_FLASH_DST_OUT_OF_BANK;
854 /* Configure the flash controller timing */
855 stellaris_read_clock_info(bank);
856 stellaris_set_flash_mode(bank, 0);
858 /* Clear and disable flash programming interrupts */
859 target_write_u32(target, FLASH_CIM, 0);
860 target_write_u32(target, FLASH_MISC, PMISC|AMISC);
862 /* multiple words to be programmed? */
863 if (words_remaining > 0)
865 /* try using a block write */
866 if ((retval = stellaris_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK)
868 if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
870 /* if block write failed (no sufficient working area),
871 * we use normal (slow) single dword accesses */
872 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
874 else if (retval == ERROR_FLASH_OPERATION_FAILED)
876 /* if an error occured, we examine the reason, and quit */
877 target_read_u32(target, FLASH_CRIS, &flash_cris);
879 LOG_ERROR("flash writing failed with CRIS: 0x%x", flash_cris);
880 return ERROR_FLASH_OPERATION_FAILED;
885 buffer += words_remaining * 4;
886 address += words_remaining * 4;
891 while (words_remaining > 0)
893 if (!(address & 0xff))
894 LOG_DEBUG("0x%x", address);
896 /* Program one word */
897 target_write_u32(target, FLASH_FMA, address);
898 target_write_buffer(target, FLASH_FMD, 4, buffer);
899 target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_WRITE);
900 /* LOG_DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE); */
901 /* Wait until write complete */
904 target_read_u32(target, FLASH_FMC, &flash_fmc);
905 } while (flash_fmc & FMC_WRITE);
914 u8 last_word[4] = {0xff, 0xff, 0xff, 0xff};
917 while(bytes_remaining > 0)
919 last_word[i++] = *(buffer + bytes_written);
924 if (!(address & 0xff))
925 LOG_DEBUG("0x%x", address);
927 /* Program one word */
928 target_write_u32(target, FLASH_FMA, address);
929 target_write_buffer(target, FLASH_FMD, 4, last_word);
930 target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_WRITE);
931 /* LOG_DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE); */
932 /* Wait until write complete */
935 target_read_u32(target, FLASH_FMC, &flash_fmc);
936 } while (flash_fmc & FMC_WRITE);
939 /* Check access violations */
940 target_read_u32(target, FLASH_CRIS, &flash_cris);
941 if (flash_cris & (AMASK))
943 LOG_DEBUG("flash_cris 0x%x", flash_cris);
944 return ERROR_FLASH_OPERATION_FAILED;
949 static int stellaris_probe(struct flash_bank_s *bank)
951 /* we can't probe on an stellaris
952 * if this is an stellaris, it has the configured flash
955 if (bank->target->state != TARGET_HALTED)
957 LOG_ERROR("Target not halted");
958 return ERROR_TARGET_NOT_HALTED;
961 /* stellaris_read_part_info() already takes care about error checking and reporting */
962 return stellaris_read_part_info(bank);
965 static int stellaris_auto_probe(struct flash_bank_s *bank)
967 stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
968 if (stellaris_info->did1)
970 return stellaris_probe(bank);
973 static int stellaris_mass_erase(struct flash_bank_s *bank)
975 target_t *target = NULL;
976 stellaris_flash_bank_t *stellaris_info = NULL;
979 stellaris_info = bank->driver_priv;
980 target = bank->target;
982 if (target->state != TARGET_HALTED)
984 LOG_ERROR("Target not halted");
985 return ERROR_TARGET_NOT_HALTED;
988 if (stellaris_info->did1 == 0)
990 stellaris_read_part_info(bank);
993 if (stellaris_info->did1 == 0)
995 LOG_WARNING("Cannot identify target as Stellaris");
996 return ERROR_FLASH_OPERATION_FAILED;
999 /* Configure the flash controller timing */
1000 stellaris_read_clock_info(bank);
1001 stellaris_set_flash_mode(bank, 0);
1003 /* Clear and disable flash programming interrupts */
1004 target_write_u32(target, FLASH_CIM, 0);
1005 target_write_u32(target, FLASH_MISC, PMISC|AMISC);
1007 target_write_u32(target, FLASH_FMA, 0);
1008 target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_MERASE);
1009 /* Wait until erase complete */
1012 target_read_u32(target, FLASH_FMC, &flash_fmc);
1014 while (flash_fmc & FMC_MERASE);
1016 /* if device has > 128k, then second erase cycle is needed
1017 * this is only valid for older devices, but will not hurt */
1018 if (stellaris_info->num_pages * stellaris_info->pagesize > 0x20000)
1020 target_write_u32(target, FLASH_FMA, 0x20000);
1021 target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_MERASE);
1022 /* Wait until erase complete */
1025 target_read_u32(target, FLASH_FMC, &flash_fmc);
1027 while (flash_fmc & FMC_MERASE);
1033 static int stellaris_handle_mass_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1040 command_print(cmd_ctx, "stellaris mass_erase <bank>");
1044 bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
1047 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
1051 if (stellaris_mass_erase(bank) == ERROR_OK)
1053 /* set all sectors as erased */
1054 for (i = 0; i < bank->num_sectors; i++)
1056 bank->sectors[i].is_erased = 1;
1059 command_print(cmd_ctx, "stellaris mass erase complete");
1063 command_print(cmd_ctx, "stellaris mass erase failed");