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 int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
59 flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr);
63 extern flash_driver_t lpc2000_flash;
64 extern flash_driver_t cfi_flash;
65 extern flash_driver_t at91sam7_flash;
66 extern flash_driver_t str7x_flash;
67 extern flash_driver_t str9x_flash;
68 extern flash_driver_t stellaris_flash;
69 extern flash_driver_t str9xpec_flash;
70 extern flash_driver_t stm32x_flash;
71 extern flash_driver_t tms470_flash;
72 extern flash_driver_t ecosflash_flash;
74 flash_driver_t *flash_drivers[] =
89 flash_bank_t *flash_banks;
90 static command_t *flash_cmd;
91 static int auto_erase = 0;
93 /* wafer thin wrapper for invoking the flash driver */
94 static int flash_driver_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
98 retval=bank->driver->write(bank, buffer, offset, count);
101 LOG_ERROR("error writing to flash at address 0x%08x at offset 0x%8.8x (%d)", bank->base, offset, retval);
107 static int flash_driver_erase(struct flash_bank_s *bank, int first, int last)
111 retval=bank->driver->erase(bank, first, last);
112 if (retval!=ERROR_OK)
114 LOG_ERROR("failed erasing sectors %d to %d (%d)", first, last, retval);
120 int flash_driver_protect(struct flash_bank_s *bank, int set, int first, int last)
124 retval=bank->driver->protect(bank, set, first, last);
125 if (retval!=ERROR_OK)
127 LOG_ERROR("failed setting protection for areas %d to %d (%d)", first, last, retval);
134 int flash_register_commands(struct command_context_s *cmd_ctx)
136 flash_cmd = register_command(cmd_ctx, NULL, "flash", NULL, COMMAND_ANY, NULL);
138 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 ...]");
139 register_command(cmd_ctx, flash_cmd, "auto_erase", handle_flash_auto_erase_command, COMMAND_ANY,
140 "auto erase flash sectors <on|off>");
144 int flash_init_drivers(struct command_context_s *cmd_ctx)
148 register_command(cmd_ctx, flash_cmd, "banks", handle_flash_banks_command, COMMAND_EXEC,
149 "list configured flash banks ");
150 register_command(cmd_ctx, flash_cmd, "info", handle_flash_info_command, COMMAND_EXEC,
151 "print info about flash bank <num>");
152 register_command(cmd_ctx, flash_cmd, "probe", handle_flash_probe_command, COMMAND_EXEC,
153 "identify flash bank <num>");
154 register_command(cmd_ctx, flash_cmd, "erase_check", handle_flash_erase_check_command, COMMAND_EXEC,
155 "check erase state of sectors in flash bank <num>");
156 register_command(cmd_ctx, flash_cmd, "protect_check", handle_flash_protect_check_command, COMMAND_EXEC,
157 "check protection state of sectors in flash bank <num>");
158 register_command(cmd_ctx, flash_cmd, "erase_sector", handle_flash_erase_command, COMMAND_EXEC,
159 "erase sectors at <bank> <first> <last>");
160 register_command(cmd_ctx, flash_cmd, "erase_address", handle_flash_erase_address_command, COMMAND_EXEC,
161 "erase address range <address> <length>");
163 register_command(cmd_ctx, flash_cmd, "fillw", handle_flash_fill_command, COMMAND_EXEC,
164 "fill with pattern <address> <word_pattern> <count>");
165 register_command(cmd_ctx, flash_cmd, "fillh", handle_flash_fill_command, COMMAND_EXEC,
166 "fill with pattern <address> <halfword_pattern> <count>");
167 register_command(cmd_ctx, flash_cmd, "fillb", handle_flash_fill_command, COMMAND_EXEC,
168 "fill with pattern <address> <byte_pattern> <count>");
170 register_command(cmd_ctx, flash_cmd, "write_bank", handle_flash_write_bank_command, COMMAND_EXEC,
171 "write binary data to <bank> <file> <offset>");
172 register_command(cmd_ctx, flash_cmd, "write_image", handle_flash_write_image_command, COMMAND_EXEC,
173 "write_image <file> [offset] [type]");
174 register_command(cmd_ctx, flash_cmd, "protect", handle_flash_protect_command, COMMAND_EXEC,
175 "set protection of sectors at <bank> <first> <last> <on|off>");
181 flash_bank_t *get_flash_bank_by_num_noprobe(int num)
186 for (p = flash_banks; p; p = p->next)
193 LOG_ERROR("flash bank %d does not exist", num);
197 int flash_get_bank_count()
201 for (p = flash_banks; p; p = p->next)
208 flash_bank_t *get_flash_bank_by_num(int num)
210 flash_bank_t *p = get_flash_bank_by_num_noprobe(num);
216 retval = p->driver->auto_probe(p);
218 if (retval != ERROR_OK)
220 LOG_ERROR("auto_probe failed %d\n", retval);
226 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
234 return ERROR_COMMAND_SYNTAX_ERROR;
237 if ((target = get_target_by_num(strtoul(args[5], NULL, 0))) == NULL)
239 LOG_ERROR("target %lu not defined", strtoul(args[5], NULL, 0));
243 for (i = 0; flash_drivers[i]; i++)
245 if (strcmp(args[0], flash_drivers[i]->name) == 0)
249 /* register flash specific commands */
250 if (flash_drivers[i]->register_commands(cmd_ctx) != ERROR_OK)
252 LOG_ERROR("couldn't register '%s' commands", args[0]);
256 c = malloc(sizeof(flash_bank_t));
258 c->driver = flash_drivers[i];
259 c->driver_priv = NULL;
260 c->base = strtoul(args[1], NULL, 0);
261 c->size = strtoul(args[2], NULL, 0);
262 c->chip_width = strtoul(args[3], NULL, 0);
263 c->bus_width = strtoul(args[4], NULL, 0);
268 if (flash_drivers[i]->flash_bank_command(cmd_ctx, cmd, args, argc, c) != ERROR_OK)
270 LOG_ERROR("'%s' driver rejected flash bank at 0x%8.8x", args[0], c->base);
275 /* put flash bank in linked list */
278 /* find last flash bank */
279 for (p = flash_banks; p && p->next; p = p->next);
292 /* no matching flash driver found */
295 LOG_ERROR("flash driver '%s' not found", args[0]);
302 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
309 command_print(cmd_ctx, "no flash banks configured");
313 for (p = flash_banks; p; p = p->next)
315 command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
316 i++, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
322 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
331 return ERROR_COMMAND_SYNTAX_ERROR;
334 for (p = flash_banks; p; p = p->next, i++)
336 if (i == strtoul(args[0], NULL, 0))
340 /* attempt auto probe */
341 if ((retval = p->driver->auto_probe(p)) != ERROR_OK)
344 command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
345 i, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
346 for (j = 0; j < p->num_sectors; j++)
350 if (p->sectors[j].is_protected == 0)
351 protect_state = "not protected";
352 else if (p->sectors[j].is_protected == 1)
353 protect_state = "protected";
355 protect_state = "protection state unknown";
357 command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%x %ikB) %s",
358 j, p->sectors[j].offset, p->sectors[j].size, p->sectors[j].size>>10,
362 *buf = '\0'; /* initialize buffer, otherwise it migh contain garbage if driver function fails */
363 retval = p->driver->info(p, buf, sizeof(buf));
364 command_print(cmd_ctx, "%s", buf);
365 if (retval != ERROR_OK)
366 LOG_ERROR("error retrieving flash info (%d)", retval);
373 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
380 return ERROR_COMMAND_SYNTAX_ERROR;
383 p = get_flash_bank_by_num_noprobe(strtoul(args[0], NULL, 0));
386 if ((retval = p->driver->probe(p)) == ERROR_OK)
388 command_print(cmd_ctx, "flash '%s' found at 0x%8.8x", p->driver->name, p->base);
390 else if (retval == ERROR_FLASH_BANK_INVALID)
392 command_print(cmd_ctx, "probing failed for flash bank '#%s' at 0x%8.8x",
397 command_print(cmd_ctx, "unknown error when probing flash bank '#%s' at 0x%8.8x",
403 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
409 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
416 return ERROR_COMMAND_SYNTAX_ERROR;
419 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
423 if ((retval = p->driver->erase_check(p)) == ERROR_OK)
425 command_print(cmd_ctx, "successfully checked erase state", p->driver->name, p->base);
429 command_print(cmd_ctx, "unknown error when checking erase state of flash bank #%s at 0x%8.8x",
433 for (j = 0; j < p->num_sectors; j++)
437 if (p->sectors[j].is_erased == 0)
438 erase_state = "not erased";
439 else if (p->sectors[j].is_erased == 1)
440 erase_state = "erased";
442 erase_state = "erase state unknown";
444 command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%x %ikB) %s",
445 j, p->sectors[j].offset, p->sectors[j].size, p->sectors[j].size>>10,
454 int handle_flash_erase_address_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
463 target_t *target = get_current_target(cmd_ctx);
467 return ERROR_COMMAND_SYNTAX_ERROR;
470 address = strtoul(args[0], NULL, 0);
471 length = strtoul(args[1], NULL, 0);
474 command_print(cmd_ctx, "Length must be >0");
475 return ERROR_COMMAND_SYNTAX_ERROR;
478 p = get_flash_bank_by_addr(target, address);
481 return ERROR_COMMAND_SYNTAX_ERROR;
484 /* We can't know if we did a resume + halt, in which case we no longer know the erased state */
487 duration_start_measure(&duration);
489 if ((retval = flash_erase_address_range(target, address, length)) == ERROR_OK)
491 duration_stop_measure(&duration, &duration_text);
492 command_print(cmd_ctx, "erased address 0x%8.8x length %i in %s", address, length, duration_text);
499 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
506 return ERROR_COMMAND_SYNTAX_ERROR;
509 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
512 if ((retval = p->driver->protect_check(p)) == ERROR_OK)
514 command_print(cmd_ctx, "successfully checked protect state");
516 else if (retval == ERROR_FLASH_OPERATION_FAILED)
518 command_print(cmd_ctx, "checking protection state failed (possibly unsupported) by flash #%s at 0x%8.8x", args[0], p->base);
522 command_print(cmd_ctx, "unknown error when checking protection state of flash bank '#%s' at 0x%8.8x", args[0], p->base);
527 return ERROR_COMMAND_SYNTAX_ERROR;
533 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
537 int first = strtoul(args[1], NULL, 0);
538 int last = strtoul(args[2], NULL, 0);
540 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
544 duration_start_measure(&duration);
548 return ERROR_COMMAND_SYNTAX_ERROR;
551 if ((retval = flash_driver_erase(p, first, last)) == ERROR_OK)
553 duration_stop_measure(&duration, &duration_text);
555 command_print(cmd_ctx, "erased sectors %i through %i on flash bank %i in %s", first, last, strtoul(args[0], 0, 0), duration_text);
561 return ERROR_COMMAND_SYNTAX_ERROR;
567 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
571 int first = strtoul(args[1], NULL, 0);
572 int last = strtoul(args[2], NULL, 0);
575 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
578 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
582 if (strcmp(args[3], "on") == 0)
584 else if (strcmp(args[3], "off") == 0)
588 return ERROR_COMMAND_SYNTAX_ERROR;
591 retval = flash_driver_protect(p, set, first, last);
592 if (retval == ERROR_OK)
594 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));
599 return ERROR_COMMAND_SYNTAX_ERROR;
606 int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
608 target_t *target = get_current_target(cmd_ctx);
620 return ERROR_COMMAND_SYNTAX_ERROR;
625 LOG_ERROR("no target selected");
629 duration_start_measure(&duration);
633 image.base_address_set = 1;
634 image.base_address = strtoul(args[1], NULL, 0);
638 image.base_address_set = 0;
639 image.base_address = 0x0;
642 image.start_address_set = 0;
644 retval = image_open(&image, args[0], (argc == 3) ? args[2] : NULL);
645 if (retval != ERROR_OK)
650 retval = flash_write(target, &image, &written, auto_erase);
651 if (retval != ERROR_OK)
657 duration_stop_measure(&duration, &duration_text);
658 if (retval == ERROR_OK)
660 command_print(cmd_ctx, "wrote %u byte from file %s in %s (%f kb/s)",
661 written, args[0], duration_text,
662 (float)written / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
671 int handle_flash_fill_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
682 target_t *target = get_current_target(cmd_ctx);
688 return ERROR_COMMAND_SYNTAX_ERROR;
691 address = strtoul(args[0], NULL, 0);
692 pattern = strtoul(args[1], NULL, 0);
693 count = strtoul(args[2], NULL, 0);
711 return ERROR_COMMAND_SYNTAX_ERROR;
714 chunk_count = MIN(count, (1024 / wordsize));
718 for(i = 0; i < chunk_count; i++)
720 target_buffer_set_u32(target, chunk + i * wordsize, pattern);
724 for(i = 0; i < chunk_count; i++)
726 target_buffer_set_u16(target, chunk + i * wordsize, pattern);
730 memset(chunk, pattern, chunk_count);
733 LOG_ERROR("BUG: can't happen");
737 duration_start_measure(&duration);
740 err = flash_erase_address_range( target, address, count*wordsize );
743 for (wrote=0; wrote<(count*wordsize); wrote+=sizeof(chunk))
745 int cur_size = MIN( (count*wordsize - wrote) , 1024 );
749 bank = get_flash_bank_by_addr(target, address);
755 err = flash_driver_write(bank, chunk, address - bank->base + wrote, cur_size);
763 duration_stop_measure(&duration, &duration_text);
768 speed=wrote / 1024.0;
769 speed/=((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0));
770 command_print(cmd_ctx, "wrote %d bytes to 0x%8.8x in %s (%f kb/s)",
771 count*wordsize, address, duration_text,
778 int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
794 return ERROR_COMMAND_SYNTAX_ERROR;
797 duration_start_measure(&duration);
799 offset = strtoul(args[2], NULL, 0);
800 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
803 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
807 if (fileio_open(&fileio, args[1], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
812 buffer = malloc(fileio.size);
813 if (fileio_read(&fileio, fileio.size, buffer, &buf_cnt) != ERROR_OK)
818 retval = flash_driver_write(p, buffer, offset, buf_cnt);
822 duration_stop_measure(&duration, &duration_text);
823 if (retval!=ERROR_OK)
825 command_print(cmd_ctx, "wrote %"PRIi64" byte from file %s to flash bank %i at offset 0x%8.8x in %s (%f kb/s)",
826 fileio.size, args[1], strtoul(args[0], NULL, 0), offset, duration_text,
827 (float)fileio.size / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
831 fileio_close(&fileio);
836 void flash_set_dirty(void)
841 /* set all flash to require erasing */
842 for (c = flash_banks; c; c = c->next)
844 for (i = 0; i < c->num_sectors; i++)
846 c->sectors[i].is_erased = 0;
851 /* lookup flash bank by address */
852 flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr)
856 /* cycle through bank list */
857 for (c = flash_banks; c; c = c->next)
860 retval = c->driver->auto_probe(c);
862 if (retval != ERROR_OK)
864 LOG_ERROR("auto_probe failed %d\n", retval);
867 /* check whether address belongs to this flash bank */
868 if ((addr >= c->base) && (addr < c->base + c->size) && target == c->target)
871 LOG_ERROR("No flash at address 0x%08x\n", addr);
875 /* erase given flash region, selects proper bank according to target and address */
876 int flash_erase_address_range(target_t *target, u32 addr, u32 length)
883 if ((c = get_flash_bank_by_addr(target, addr)) == NULL)
884 return ERROR_FLASH_DST_OUT_OF_BANK; /* no corresponding bank found */
886 if (c->size == 0 || c->num_sectors == 0)
888 LOG_ERROR("Bank is invalid");
889 return ERROR_FLASH_BANK_INVALID;
894 /* special case, erase whole bank when length is zero */
896 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
898 return flash_driver_erase(c, 0, c->num_sectors - 1);
901 /* check whether it fits */
902 if (addr + length > c->base + c->size)
903 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
907 for (i = 0; i < c->num_sectors; i++)
909 /* check whether sector overlaps with the given range and is not yet erased */
910 if (addr < c->sectors[i].offset + c->sectors[i].size && addr + length > c->sectors[i].offset && c->sectors[i].is_erased != 1) {
911 /* if first is not set yet then this is the first sector */
914 last = i; /* and it is the last one so far in any case */
918 if( first == -1 || last == -1 )
921 return flash_driver_erase(c, first, last);
924 /* write (optional verify) an image to flash memory of the given target */
925 int flash_write(target_t *target, image_t *image, u32 *written, int erase)
941 /* assume all sectors need erasing - stops any problems
942 * when flash_write is called multiple times */
947 /* loop until we reach end of the image */
948 while (section < image->num_sections)
954 u32 run_address = image->sections[section].base_address + section_offset;
955 u32 run_size = image->sections[section].size - section_offset;
957 if (image->sections[section].size == 0)
959 LOG_WARNING("empty section %d", section);
965 /* find the corresponding flash bank */
966 if ((c = get_flash_bank_by_addr(target, run_address)) == NULL)
968 section++; /* and skip it */
973 /* collect consecutive sections which fall into the same bank */
974 section_first = section;
975 section_last = section;
976 while ((run_address + run_size < c->base + c->size)
977 && (section_last + 1 < image->num_sections))
979 if (image->sections[section_last + 1].base_address < (run_address + run_size))
981 LOG_DEBUG("section %d out of order(very slightly surprising, but supported)", section_last + 1);
984 if (image->sections[section_last + 1].base_address != (run_address + run_size))
986 run_size += image->sections[++section_last].size;
989 /* fit the run into bank constraints */
990 if (run_address + run_size > c->base + c->size)
991 run_size = c->base + c->size - run_address;
993 /* allocate buffer */
994 buffer = malloc(run_size);
997 /* read sections to the buffer */
998 while (buffer_size < run_size)
1002 if (buffer_size - run_size <= image->sections[section].size - section_offset)
1003 size_read = buffer_size - run_size;
1005 size_read = image->sections[section].size - section_offset;
1007 if ((retval = image_read_section(image, section, section_offset,
1008 size_read, buffer + buffer_size, &size_read)) != ERROR_OK || size_read == 0)
1015 buffer_size += size_read;
1016 section_offset += size_read;
1018 if (section_offset >= image->sections[section].size)
1029 /* calculate and erase sectors */
1030 retval = flash_erase_address_range( target, run_address, run_size );
1033 if (retval == ERROR_OK)
1035 /* write flash sectors */
1036 retval = flash_driver_write(c, buffer, run_address - c->base, run_size);
1041 if (retval != ERROR_OK)
1043 return retval; /* abort operation */
1046 if (written != NULL)
1047 *written += run_size; /* add run size to total written counter */
1053 int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1057 return ERROR_COMMAND_SYNTAX_ERROR;
1060 if (strcmp(args[0], "on") == 0)
1062 else if (strcmp(args[0], "off") == 0)
1065 return ERROR_COMMAND_SYNTAX_ERROR;
1071 int default_flash_blank_check(struct flash_bank_s *bank)
1073 target_t *target = bank->target;
1075 int buffer_size=sizeof(buffer);
1079 if (bank->target->state != TARGET_HALTED)
1081 return ERROR_TARGET_NOT_HALTED;
1086 working_area_t *erase_check_algorithm;
1088 /* FIX! doesn't work yet... */
1090 char test(char *a, int len, char t)
1094 for (i=0; i<len; i++)
1101 $ arm-elf-gcc -c -mthumb -O3 test.c
1103 $ arm-elf-objdump --disassemble test.o
1105 test.o: file format elf32-littlearm
1107 Disassembly of section .text:
1110 0: b510 push {r4, lr}
1111 2: 0612 lsl r2, r2, #24
1112 4: 1c04 mov r4, r0 (add r4, r0, #0)
1113 6: 0e10 lsr r0, r2, #24
1116 c: dd04 ble 18 <test+0x18>
1117 e: 5ca3 ldrb r3, [r4, r2]
1121 16: dbfa blt e <test+0xe>
1122 18: bd10 pop {r4, pc}
1123 1a: 46c0 nop (mov r8, r8)
1127 u16 erase_check_code[] =
1129 0x0612,// lsl r2, r2, #24
1130 0x1c04,// mov r4, r0 (add r4, r0, #0)
1131 0x0e10,// lsr r0, r2, #24
1132 0x2200,// mov r2, #0
1133 0x2900,// cmp r1, #0
1134 0xdd04,// ble 18 <test+0x18>
1135 0x5ca3,// ldrb r3, [r4, r2]
1136 0x3201,// add r2, #1
1137 0x4018,// and r0, r3
1138 0x428a,// cmp r2, r1
1139 0xdbfa,// blt e <test+0xe>
1140 0x46c0,// nop (mov r8, r8)
1146 /* make sure we have a working area */
1147 if (target_alloc_working_area(target, ((sizeof(erase_check_code)+3)/4)*4, &erase_check_algorithm) != ERROR_OK)
1149 erase_check_algorithm = NULL;
1152 if (erase_check_algorithm)
1154 u8 erase_check_code_buf[((sizeof(erase_check_code)+3)/4)*4];
1155 LOG_DEBUG("Running fast flash erase check");
1157 for (i = 0; i < sizeof(erase_check_code)/sizeof(*erase_check_code); i++)
1158 target_buffer_set_u16(target, erase_check_code_buf + (i*2), erase_check_code[i]);
1160 /* write algorithm code to working area */
1161 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)
1163 for (i = 0; i < bank->num_sectors; i++)
1165 u32 address = bank->base + bank->sectors[i].offset;
1166 u32 size = bank->sectors[i].size;
1168 reg_param_t reg_params[3];
1169 armv7m_algorithm_t arm_info;
1171 arm_info.common_magic = ARMV7M_COMMON_MAGIC;
1172 arm_info.core_mode = ARMV7M_MODE_ANY;
1173 arm_info.core_state = ARMV7M_STATE_THUMB;
1175 init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
1176 buf_set_u32(reg_params[0].value, 0, 32, address);
1178 init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
1179 buf_set_u32(reg_params[1].value, 0, 32, size);
1181 init_reg_param(®_params[2], "r2", 32, PARAM_IN_OUT);
1182 buf_set_u32(reg_params[2].value, 0, 32, 0xff);
1184 if ((retval = target->type->run_algorithm(target, 0, NULL, 3, reg_params, erase_check_algorithm->address,
1185 erase_check_algorithm->address + sizeof(erase_check_code) - 2, 10000, &arm_info)) != ERROR_OK)
1188 if (buf_get_u32(reg_params[2].value, 0, 32) == 0xff)
1189 bank->sectors[i].is_erased = 1;
1191 bank->sectors[i].is_erased = 0;
1193 destroy_reg_param(®_params[0]);
1194 destroy_reg_param(®_params[1]);
1195 destroy_reg_param(®_params[2]);
1197 if (i == bank->num_sectors)
1202 target_free_working_area(target, erase_check_algorithm);
1207 /* try ARM7 instead */
1209 u32 erase_check_code[] =
1211 0xe4d03001, /* ldrb r3, [r0], #1 */
1212 0xe0022003, /* and r2, r2, r3 */
1213 0xe2511001, /* subs r1, r1, #1 */
1214 0x1afffffb, /* b -4 */
1215 0xeafffffe /* b 0 */
1218 /* make sure we have a working area */
1219 if (target_alloc_working_area(target, 20, &erase_check_algorithm) == ERROR_OK)
1221 u8 erase_check_code_buf[5 * 4];
1223 for (i = 0; i < 5; i++)
1224 target_buffer_set_u32(target, erase_check_code_buf + (i*4), erase_check_code[i]);
1226 /* write algorithm code to working area */
1227 if ((retval=target->type->write_memory(target, erase_check_algorithm->address, 4, 5, erase_check_code_buf))==ERROR_OK)
1229 for (i = 0; i < bank->num_sectors; i++)
1231 u32 address = bank->base + bank->sectors[i].offset;
1232 u32 size = bank->sectors[i].size;
1234 reg_param_t reg_params[3];
1235 armv4_5_algorithm_t armv4_5_info;
1237 armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
1238 armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
1239 armv4_5_info.core_state = ARMV4_5_STATE_ARM;
1241 init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
1242 buf_set_u32(reg_params[0].value, 0, 32, address);
1244 init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
1245 buf_set_u32(reg_params[1].value, 0, 32, size);
1247 init_reg_param(®_params[2], "r2", 32, PARAM_IN_OUT);
1248 buf_set_u32(reg_params[2].value, 0, 32, 0xff);
1250 if ((retval = target->type->run_algorithm(target, 0, NULL, 3, reg_params,
1251 erase_check_algorithm->address, erase_check_algorithm->address + 0x10, 10000, &armv4_5_info)) != ERROR_OK)
1254 if (buf_get_u32(reg_params[2].value, 0, 32) == 0xff)
1255 bank->sectors[i].is_erased = 1;
1257 bank->sectors[i].is_erased = 0;
1259 destroy_reg_param(®_params[0]);
1260 destroy_reg_param(®_params[1]);
1261 destroy_reg_param(®_params[2]);
1263 if (i == bank->num_sectors)
1268 target_free_working_area(target, erase_check_algorithm);
1275 LOG_USER("Running slow fallback erase check - add working memory");
1276 for (i = 0; i < bank->num_sectors; i++)
1279 bank->sectors[i].is_erased = 1;
1281 for (j=0; j<bank->sectors[i].size; j+=buffer_size)
1286 if (chunk>(j-bank->sectors[i].size))
1288 chunk=(j-bank->sectors[i].size);
1291 retval=target->type->read_memory(target, bank->base + bank->sectors[i].offset + j, 4, chunk/4, buffer);
1292 if (retval!=ERROR_OK)
1295 for (nBytes = 0; nBytes < chunk; nBytes++)
1297 if (buffer[nBytes] != 0xFF)
1299 bank->sectors[i].is_erased = 0;