1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
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 ***************************************************************************/
27 #include "time_support.h"
32 #include "algorithm.h"
33 #include "binarybuffer.h"
39 #include <sys/types.h>
44 /* command handlers */
45 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
46 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
47 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
48 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
49 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
50 int handle_flash_erase_address_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
51 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
52 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
53 int handle_flash_write_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
54 int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
55 int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
56 int handle_flash_fill_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
57 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
58 flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr);
62 extern flash_driver_t lpc2000_flash;
63 extern flash_driver_t cfi_flash;
64 extern flash_driver_t at91sam7_flash;
65 extern flash_driver_t str7x_flash;
66 extern flash_driver_t str9x_flash;
67 extern flash_driver_t stellaris_flash;
68 extern flash_driver_t str9xpec_flash;
69 extern flash_driver_t stm32x_flash;
70 extern flash_driver_t tms470_flash;
71 extern flash_driver_t ecosflash_flash;
73 flash_driver_t *flash_drivers[] =
88 flash_bank_t *flash_banks;
89 static command_t *flash_cmd;
91 /* wafer thin wrapper for invoking the flash driver */
92 static int flash_driver_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
96 retval=bank->driver->write(bank, buffer, offset, count);
99 LOG_ERROR("error writing to flash at address 0x%08x at offset 0x%8.8x (%d)", bank->base, offset, retval);
105 static int flash_driver_erase(struct flash_bank_s *bank, int first, int last)
109 retval=bank->driver->erase(bank, first, last);
110 if (retval!=ERROR_OK)
112 LOG_ERROR("failed erasing sectors %d to %d (%d)", first, last, retval);
118 int flash_driver_protect(struct flash_bank_s *bank, int set, int first, int last)
122 retval=bank->driver->protect(bank, set, first, last);
123 if (retval!=ERROR_OK)
125 LOG_ERROR("failed setting protection for areas %d to %d (%d)", first, last, retval);
132 int flash_register_commands(struct command_context_s *cmd_ctx)
134 flash_cmd = register_command(cmd_ctx, NULL, "flash", NULL, COMMAND_ANY, NULL);
136 register_command(cmd_ctx, flash_cmd, "bank", handle_flash_bank_command, COMMAND_CONFIG, "flash_bank <driver> <base> <size> <chip_width> <bus_width> <target> [driver_options ...]");
140 int flash_init_drivers(struct command_context_s *cmd_ctx)
144 register_command(cmd_ctx, flash_cmd, "banks", handle_flash_banks_command, COMMAND_EXEC,
145 "list configured flash banks ");
146 register_command(cmd_ctx, flash_cmd, "info", handle_flash_info_command, COMMAND_EXEC,
147 "print info about flash bank <num>");
148 register_command(cmd_ctx, flash_cmd, "probe", handle_flash_probe_command, COMMAND_EXEC,
149 "identify flash bank <num>");
150 register_command(cmd_ctx, flash_cmd, "erase_check", handle_flash_erase_check_command, COMMAND_EXEC,
151 "check erase state of sectors in flash bank <num>");
152 register_command(cmd_ctx, flash_cmd, "protect_check", handle_flash_protect_check_command, COMMAND_EXEC,
153 "check protection state of sectors in flash bank <num>");
154 register_command(cmd_ctx, flash_cmd, "erase_sector", handle_flash_erase_command, COMMAND_EXEC,
155 "erase sectors at <bank> <first> <last>");
156 register_command(cmd_ctx, flash_cmd, "erase_address", handle_flash_erase_address_command, COMMAND_EXEC,
157 "erase address range <address> <length>");
159 register_command(cmd_ctx, flash_cmd, "fillw", handle_flash_fill_command, COMMAND_EXEC,
160 "fill with pattern <address> <word_pattern> <count>");
161 register_command(cmd_ctx, flash_cmd, "fillh", handle_flash_fill_command, COMMAND_EXEC,
162 "fill with pattern <address> <halfword_pattern> <count>");
163 register_command(cmd_ctx, flash_cmd, "fillb", handle_flash_fill_command, COMMAND_EXEC,
164 "fill with pattern <address> <byte_pattern> <count>");
166 register_command(cmd_ctx, flash_cmd, "write_bank", handle_flash_write_bank_command, COMMAND_EXEC,
167 "write binary data to <bank> <file> <offset>");
168 register_command(cmd_ctx, flash_cmd, "write_image", handle_flash_write_image_command, COMMAND_EXEC,
169 "write_image [erase] <file> [offset] [type]");
170 register_command(cmd_ctx, flash_cmd, "protect", handle_flash_protect_command, COMMAND_EXEC,
171 "set protection of sectors at <bank> <first> <last> <on|off>");
177 flash_bank_t *get_flash_bank_by_num_noprobe(int num)
182 for (p = flash_banks; p; p = p->next)
189 LOG_ERROR("flash bank %d does not exist", num);
193 int flash_get_bank_count()
197 for (p = flash_banks; p; p = p->next)
204 flash_bank_t *get_flash_bank_by_num(int num)
206 flash_bank_t *p = get_flash_bank_by_num_noprobe(num);
212 retval = p->driver->auto_probe(p);
214 if (retval != ERROR_OK)
216 LOG_ERROR("auto_probe failed %d\n", retval);
222 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
230 return ERROR_COMMAND_SYNTAX_ERROR;
233 if ((target = get_target_by_num(strtoul(args[5], NULL, 0))) == NULL)
235 LOG_ERROR("target %lu not defined", strtoul(args[5], NULL, 0));
239 for (i = 0; flash_drivers[i]; i++)
241 if (strcmp(args[0], flash_drivers[i]->name) == 0)
245 /* register flash specific commands */
246 if (flash_drivers[i]->register_commands(cmd_ctx) != ERROR_OK)
248 LOG_ERROR("couldn't register '%s' commands", args[0]);
252 c = malloc(sizeof(flash_bank_t));
254 c->driver = flash_drivers[i];
255 c->driver_priv = NULL;
256 c->base = strtoul(args[1], NULL, 0);
257 c->size = strtoul(args[2], NULL, 0);
258 c->chip_width = strtoul(args[3], NULL, 0);
259 c->bus_width = strtoul(args[4], NULL, 0);
264 if (flash_drivers[i]->flash_bank_command(cmd_ctx, cmd, args, argc, c) != ERROR_OK)
266 LOG_ERROR("'%s' driver rejected flash bank at 0x%8.8x", args[0], c->base);
271 /* put flash bank in linked list */
274 /* find last flash bank */
275 for (p = flash_banks; p && p->next; p = p->next);
288 /* no matching flash driver found */
291 LOG_ERROR("flash driver '%s' not found", args[0]);
298 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
305 command_print(cmd_ctx, "no flash banks configured");
309 for (p = flash_banks; p; p = p->next)
311 command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
312 i++, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
318 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
327 return ERROR_COMMAND_SYNTAX_ERROR;
330 for (p = flash_banks; p; p = p->next, i++)
332 if (i == strtoul(args[0], NULL, 0))
336 /* attempt auto probe */
337 if ((retval = p->driver->auto_probe(p)) != ERROR_OK)
340 command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
341 i, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
342 for (j = 0; j < p->num_sectors; j++)
346 if (p->sectors[j].is_protected == 0)
347 protect_state = "not protected";
348 else if (p->sectors[j].is_protected == 1)
349 protect_state = "protected";
351 protect_state = "protection state unknown";
353 command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%x %ikB) %s",
354 j, p->sectors[j].offset, p->sectors[j].size, p->sectors[j].size>>10,
358 *buf = '\0'; /* initialize buffer, otherwise it migh contain garbage if driver function fails */
359 retval = p->driver->info(p, buf, sizeof(buf));
360 command_print(cmd_ctx, "%s", buf);
361 if (retval != ERROR_OK)
362 LOG_ERROR("error retrieving flash info (%d)", retval);
369 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
376 return ERROR_COMMAND_SYNTAX_ERROR;
379 p = get_flash_bank_by_num_noprobe(strtoul(args[0], NULL, 0));
382 if ((retval = p->driver->probe(p)) == ERROR_OK)
384 command_print(cmd_ctx, "flash '%s' found at 0x%8.8x", p->driver->name, p->base);
386 else if (retval == ERROR_FLASH_BANK_INVALID)
388 command_print(cmd_ctx, "probing failed for flash bank '#%s' at 0x%8.8x",
393 command_print(cmd_ctx, "unknown error when probing flash bank '#%s' at 0x%8.8x",
399 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
405 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
412 return ERROR_COMMAND_SYNTAX_ERROR;
415 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
419 if ((retval = p->driver->erase_check(p)) == ERROR_OK)
421 command_print(cmd_ctx, "successfully checked erase state", p->driver->name, p->base);
425 command_print(cmd_ctx, "unknown error when checking erase state of flash bank #%s at 0x%8.8x",
429 for (j = 0; j < p->num_sectors; j++)
433 if (p->sectors[j].is_erased == 0)
434 erase_state = "not erased";
435 else if (p->sectors[j].is_erased == 1)
436 erase_state = "erased";
438 erase_state = "erase state unknown";
440 command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%x %ikB) %s",
441 j, p->sectors[j].offset, p->sectors[j].size, p->sectors[j].size>>10,
450 int handle_flash_erase_address_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
459 target_t *target = get_current_target(cmd_ctx);
463 return ERROR_COMMAND_SYNTAX_ERROR;
466 address = strtoul(args[0], NULL, 0);
467 length = strtoul(args[1], NULL, 0);
470 command_print(cmd_ctx, "Length must be >0");
471 return ERROR_COMMAND_SYNTAX_ERROR;
474 p = get_flash_bank_by_addr(target, address);
477 return ERROR_COMMAND_SYNTAX_ERROR;
480 /* We can't know if we did a resume + halt, in which case we no longer know the erased state */
483 duration_start_measure(&duration);
485 if ((retval = flash_erase_address_range(target, address, length)) == ERROR_OK)
487 duration_stop_measure(&duration, &duration_text);
488 command_print(cmd_ctx, "erased address 0x%8.8x length %i in %s", address, length, duration_text);
495 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
502 return ERROR_COMMAND_SYNTAX_ERROR;
505 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
508 if ((retval = p->driver->protect_check(p)) == ERROR_OK)
510 command_print(cmd_ctx, "successfully checked protect state");
512 else if (retval == ERROR_FLASH_OPERATION_FAILED)
514 command_print(cmd_ctx, "checking protection state failed (possibly unsupported) by flash #%s at 0x%8.8x", args[0], p->base);
518 command_print(cmd_ctx, "unknown error when checking protection state of flash bank '#%s' at 0x%8.8x", args[0], p->base);
523 return ERROR_COMMAND_SYNTAX_ERROR;
529 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
533 int first = strtoul(args[1], NULL, 0);
534 int last = strtoul(args[2], NULL, 0);
536 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
540 duration_start_measure(&duration);
544 return ERROR_COMMAND_SYNTAX_ERROR;
547 if ((retval = flash_driver_erase(p, first, last)) == ERROR_OK)
549 duration_stop_measure(&duration, &duration_text);
551 command_print(cmd_ctx, "erased sectors %i through %i on flash bank %i in %s", first, last, strtoul(args[0], 0, 0), duration_text);
557 return ERROR_COMMAND_SYNTAX_ERROR;
563 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
567 int first = strtoul(args[1], NULL, 0);
568 int last = strtoul(args[2], NULL, 0);
571 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
574 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
578 if (strcmp(args[3], "on") == 0)
580 else if (strcmp(args[3], "off") == 0)
584 return ERROR_COMMAND_SYNTAX_ERROR;
587 retval = flash_driver_protect(p, set, first, last);
588 if (retval == ERROR_OK)
590 command_print(cmd_ctx, "%s protection for sectors %i through %i on flash bank %i", (set) ? "set" : "cleared", first, last, strtoul(args[0], 0, 0));
595 return ERROR_COMMAND_SYNTAX_ERROR;
602 int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
604 target_t *target = get_current_target(cmd_ctx);
616 return ERROR_COMMAND_SYNTAX_ERROR;
619 /* flash auto-erase is disabled by default*/
622 if (stricmp(args[0], "erase")==0)
627 command_print(cmd_ctx, "auto erase enabled");
633 return ERROR_COMMAND_SYNTAX_ERROR;
638 LOG_ERROR("no target selected");
642 duration_start_measure(&duration);
646 image.base_address_set = 1;
647 image.base_address = strtoul(args[1], NULL, 0);
651 image.base_address_set = 0;
652 image.base_address = 0x0;
655 image.start_address_set = 0;
657 retval = image_open(&image, args[0], (argc == 3) ? args[2] : NULL);
658 if (retval != ERROR_OK)
663 retval = flash_write(target, &image, &written, auto_erase);
664 if (retval != ERROR_OK)
670 duration_stop_measure(&duration, &duration_text);
671 if (retval == ERROR_OK)
673 command_print(cmd_ctx, "wrote %u byte from file %s in %s (%f kb/s)",
674 written, args[0], duration_text,
675 (float)written / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
684 int handle_flash_fill_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
695 target_t *target = get_current_target(cmd_ctx);
701 return ERROR_COMMAND_SYNTAX_ERROR;
704 address = strtoul(args[0], NULL, 0);
705 pattern = strtoul(args[1], NULL, 0);
706 count = strtoul(args[2], NULL, 0);
724 return ERROR_COMMAND_SYNTAX_ERROR;
727 chunk_count = MIN(count, (1024 / wordsize));
731 for(i = 0; i < chunk_count; i++)
733 target_buffer_set_u32(target, chunk + i * wordsize, pattern);
737 for(i = 0; i < chunk_count; i++)
739 target_buffer_set_u16(target, chunk + i * wordsize, pattern);
743 memset(chunk, pattern, chunk_count);
746 LOG_ERROR("BUG: can't happen");
750 duration_start_measure(&duration);
753 err = flash_erase_address_range( target, address, count*wordsize );
756 for (wrote=0; wrote<(count*wordsize); wrote+=sizeof(chunk))
758 int cur_size = MIN( (count*wordsize - wrote) , 1024 );
762 bank = get_flash_bank_by_addr(target, address);
768 err = flash_driver_write(bank, chunk, address - bank->base + wrote, cur_size);
776 duration_stop_measure(&duration, &duration_text);
781 speed=wrote / 1024.0;
782 speed/=((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0));
783 command_print(cmd_ctx, "wrote %d bytes to 0x%8.8x in %s (%f kb/s)",
784 count*wordsize, address, duration_text,
791 int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
807 return ERROR_COMMAND_SYNTAX_ERROR;
810 duration_start_measure(&duration);
812 offset = strtoul(args[2], NULL, 0);
813 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
816 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
820 if (fileio_open(&fileio, args[1], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
825 buffer = malloc(fileio.size);
826 if (fileio_read(&fileio, fileio.size, buffer, &buf_cnt) != ERROR_OK)
831 retval = flash_driver_write(p, buffer, offset, buf_cnt);
835 duration_stop_measure(&duration, &duration_text);
836 if (retval!=ERROR_OK)
838 command_print(cmd_ctx, "wrote %"PRIi64" byte from file %s to flash bank %i at offset 0x%8.8x in %s (%f kb/s)",
839 fileio.size, args[1], strtoul(args[0], NULL, 0), offset, duration_text,
840 (float)fileio.size / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
844 fileio_close(&fileio);
849 void flash_set_dirty(void)
854 /* set all flash to require erasing */
855 for (c = flash_banks; c; c = c->next)
857 for (i = 0; i < c->num_sectors; i++)
859 c->sectors[i].is_erased = 0;
864 /* lookup flash bank by address */
865 flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr)
869 /* cycle through bank list */
870 for (c = flash_banks; c; c = c->next)
873 retval = c->driver->auto_probe(c);
875 if (retval != ERROR_OK)
877 LOG_ERROR("auto_probe failed %d\n", retval);
880 /* check whether address belongs to this flash bank */
881 if ((addr >= c->base) && (addr < c->base + c->size) && target == c->target)
884 LOG_ERROR("No flash at address 0x%08x\n", addr);
888 /* erase given flash region, selects proper bank according to target and address */
889 int flash_erase_address_range(target_t *target, u32 addr, u32 length)
896 if ((c = get_flash_bank_by_addr(target, addr)) == NULL)
897 return ERROR_FLASH_DST_OUT_OF_BANK; /* no corresponding bank found */
899 if (c->size == 0 || c->num_sectors == 0)
901 LOG_ERROR("Bank is invalid");
902 return ERROR_FLASH_BANK_INVALID;
907 /* special case, erase whole bank when length is zero */
909 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
911 return flash_driver_erase(c, 0, c->num_sectors - 1);
914 /* check whether it fits */
915 if (addr + length > c->base + c->size)
916 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
920 for (i = 0; i < c->num_sectors; i++)
922 /* check whether sector overlaps with the given range and is not yet erased */
923 if (addr < c->sectors[i].offset + c->sectors[i].size && addr + length > c->sectors[i].offset && c->sectors[i].is_erased != 1) {
924 /* if first is not set yet then this is the first sector */
927 last = i; /* and it is the last one so far in any case */
931 if( first == -1 || last == -1 )
934 return flash_driver_erase(c, first, last);
937 /* write (optional verify) an image to flash memory of the given target */
938 int flash_write(target_t *target, image_t *image, u32 *written, int erase)
954 /* assume all sectors need erasing - stops any problems
955 * when flash_write is called multiple times */
960 /* loop until we reach end of the image */
961 while (section < image->num_sections)
967 u32 run_address = image->sections[section].base_address + section_offset;
968 u32 run_size = image->sections[section].size - section_offset;
970 if (image->sections[section].size == 0)
972 LOG_WARNING("empty section %d", section);
978 /* find the corresponding flash bank */
979 if ((c = get_flash_bank_by_addr(target, run_address)) == NULL)
981 section++; /* and skip it */
986 /* collect consecutive sections which fall into the same bank */
987 section_first = section;
988 section_last = section;
989 while ((run_address + run_size < c->base + c->size)
990 && (section_last + 1 < image->num_sections))
992 if (image->sections[section_last + 1].base_address < (run_address + run_size))
994 LOG_DEBUG("section %d out of order(very slightly surprising, but supported)", section_last + 1);
997 if (image->sections[section_last + 1].base_address != (run_address + run_size))
999 run_size += image->sections[++section_last].size;
1002 /* fit the run into bank constraints */
1003 if (run_address + run_size > c->base + c->size)
1004 run_size = c->base + c->size - run_address;
1006 /* allocate buffer */
1007 buffer = malloc(run_size);
1010 /* read sections to the buffer */
1011 while (buffer_size < run_size)
1015 if (buffer_size - run_size <= image->sections[section].size - section_offset)
1016 size_read = buffer_size - run_size;
1018 size_read = image->sections[section].size - section_offset;
1020 if ((retval = image_read_section(image, section, section_offset,
1021 size_read, buffer + buffer_size, &size_read)) != ERROR_OK || size_read == 0)
1028 buffer_size += size_read;
1029 section_offset += size_read;
1031 if (section_offset >= image->sections[section].size)
1042 /* calculate and erase sectors */
1043 retval = flash_erase_address_range( target, run_address, run_size );
1046 if (retval == ERROR_OK)
1048 /* write flash sectors */
1049 retval = flash_driver_write(c, buffer, run_address - c->base, run_size);
1054 if (retval != ERROR_OK)
1056 return retval; /* abort operation */
1059 if (written != NULL)
1060 *written += run_size; /* add run size to total written counter */
1066 int default_flash_blank_check(struct flash_bank_s *bank)
1068 target_t *target = bank->target;
1070 int buffer_size=sizeof(buffer);
1074 if (bank->target->state != TARGET_HALTED)
1076 return ERROR_TARGET_NOT_HALTED;
1081 working_area_t *erase_check_algorithm;
1083 /* FIX! doesn't work yet... */
1085 char test(char *a, int len, char t)
1089 for (i=0; i<len; i++)
1096 $ arm-elf-gcc -c -mthumb -O3 test.c
1098 $ arm-elf-objdump --disassemble test.o
1100 test.o: file format elf32-littlearm
1102 Disassembly of section .text:
1105 0: b510 push {r4, lr}
1106 2: 0612 lsl r2, r2, #24
1107 4: 1c04 mov r4, r0 (add r4, r0, #0)
1108 6: 0e10 lsr r0, r2, #24
1111 c: dd04 ble 18 <test+0x18>
1112 e: 5ca3 ldrb r3, [r4, r2]
1116 16: dbfa blt e <test+0xe>
1117 18: bd10 pop {r4, pc}
1118 1a: 46c0 nop (mov r8, r8)
1122 u16 erase_check_code[] =
1124 0x0612,// lsl r2, r2, #24
1125 0x1c04,// mov r4, r0 (add r4, r0, #0)
1126 0x0e10,// lsr r0, r2, #24
1127 0x2200,// mov r2, #0
1128 0x2900,// cmp r1, #0
1129 0xdd04,// ble 18 <test+0x18>
1130 0x5ca3,// ldrb r3, [r4, r2]
1131 0x3201,// add r2, #1
1132 0x4018,// and r0, r3
1133 0x428a,// cmp r2, r1
1134 0xdbfa,// blt e <test+0xe>
1135 0x46c0,// nop (mov r8, r8)
1141 /* make sure we have a working area */
1142 if (target_alloc_working_area(target, ((sizeof(erase_check_code)+3)/4)*4, &erase_check_algorithm) != ERROR_OK)
1144 erase_check_algorithm = NULL;
1147 if (erase_check_algorithm)
1149 u8 erase_check_code_buf[((sizeof(erase_check_code)+3)/4)*4];
1150 LOG_DEBUG("Running fast flash erase check");
1152 for (i = 0; i < sizeof(erase_check_code)/sizeof(*erase_check_code); i++)
1153 target_buffer_set_u16(target, erase_check_code_buf + (i*2), erase_check_code[i]);
1155 /* write algorithm code to working area */
1156 if ((retval=target->type->write_memory(target, erase_check_algorithm->address, 2, sizeof(erase_check_code)/sizeof(*erase_check_code), erase_check_code_buf))==ERROR_OK)
1158 for (i = 0; i < bank->num_sectors; i++)
1160 u32 address = bank->base + bank->sectors[i].offset;
1161 u32 size = bank->sectors[i].size;
1163 reg_param_t reg_params[3];
1164 armv7m_algorithm_t arm_info;
1166 arm_info.common_magic = ARMV7M_COMMON_MAGIC;
1167 arm_info.core_mode = ARMV7M_MODE_ANY;
1168 arm_info.core_state = ARMV7M_STATE_THUMB;
1170 init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
1171 buf_set_u32(reg_params[0].value, 0, 32, address);
1173 init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
1174 buf_set_u32(reg_params[1].value, 0, 32, size);
1176 init_reg_param(®_params[2], "r2", 32, PARAM_IN_OUT);
1177 buf_set_u32(reg_params[2].value, 0, 32, 0xff);
1179 if ((retval = target->type->run_algorithm(target, 0, NULL, 3, reg_params, erase_check_algorithm->address,
1180 erase_check_algorithm->address + sizeof(erase_check_code) - 2, 10000, &arm_info)) != ERROR_OK)
1183 if (buf_get_u32(reg_params[2].value, 0, 32) == 0xff)
1184 bank->sectors[i].is_erased = 1;
1186 bank->sectors[i].is_erased = 0;
1188 destroy_reg_param(®_params[0]);
1189 destroy_reg_param(®_params[1]);
1190 destroy_reg_param(®_params[2]);
1192 if (i == bank->num_sectors)
1197 target_free_working_area(target, erase_check_algorithm);
1202 /* try ARM7 instead */
1204 u32 erase_check_code[] =
1206 0xe4d03001, /* ldrb r3, [r0], #1 */
1207 0xe0022003, /* and r2, r2, r3 */
1208 0xe2511001, /* subs r1, r1, #1 */
1209 0x1afffffb, /* b -4 */
1210 0xeafffffe /* b 0 */
1213 /* make sure we have a working area */
1214 if (target_alloc_working_area(target, 20, &erase_check_algorithm) == ERROR_OK)
1216 u8 erase_check_code_buf[5 * 4];
1218 for (i = 0; i < 5; i++)
1219 target_buffer_set_u32(target, erase_check_code_buf + (i*4), erase_check_code[i]);
1221 /* write algorithm code to working area */
1222 if ((retval=target->type->write_memory(target, erase_check_algorithm->address, 4, 5, erase_check_code_buf))==ERROR_OK)
1224 for (i = 0; i < bank->num_sectors; i++)
1226 u32 address = bank->base + bank->sectors[i].offset;
1227 u32 size = bank->sectors[i].size;
1229 reg_param_t reg_params[3];
1230 armv4_5_algorithm_t armv4_5_info;
1232 armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
1233 armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
1234 armv4_5_info.core_state = ARMV4_5_STATE_ARM;
1236 init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
1237 buf_set_u32(reg_params[0].value, 0, 32, address);
1239 init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
1240 buf_set_u32(reg_params[1].value, 0, 32, size);
1242 init_reg_param(®_params[2], "r2", 32, PARAM_IN_OUT);
1243 buf_set_u32(reg_params[2].value, 0, 32, 0xff);
1245 if ((retval = target->type->run_algorithm(target, 0, NULL, 3, reg_params,
1246 erase_check_algorithm->address, erase_check_algorithm->address + 0x10, 10000, &armv4_5_info)) != ERROR_OK)
1249 if (buf_get_u32(reg_params[2].value, 0, 32) == 0xff)
1250 bank->sectors[i].is_erased = 1;
1252 bank->sectors[i].is_erased = 0;
1254 destroy_reg_param(®_params[0]);
1255 destroy_reg_param(®_params[1]);
1256 destroy_reg_param(®_params[2]);
1258 if (i == bank->num_sectors)
1263 target_free_working_area(target, erase_check_algorithm);
1270 LOG_USER("Running slow fallback erase check - add working memory");
1271 for (i = 0; i < bank->num_sectors; i++)
1274 bank->sectors[i].is_erased = 1;
1276 for (j=0; j<bank->sectors[i].size; j+=buffer_size)
1281 if (chunk>(j-bank->sectors[i].size))
1283 chunk=(j-bank->sectors[i].size);
1286 retval=target->type->read_memory(target, bank->base + bank->sectors[i].offset + j, 4, chunk/4, buffer);
1287 if (retval!=ERROR_OK)
1290 for (nBytes = 0; nBytes < chunk; nBytes++)
1292 if (buffer[nBytes] != 0xFF)
1294 bank->sectors[i].is_erased = 0;