1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2008 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
8 * Copyright (C) 2008 by Oyvind Harboe *
9 * oyvind.harboe@zylin.com *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program; if not, write to the *
23 * Free Software Foundation, Inc., *
24 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
25 ***************************************************************************/
30 #include "replacements.h"
38 #include "algorithm.h"
39 #include "binarybuffer.h"
45 static u32 bank1start = 0x00080000;
47 int str9x_register_commands(struct command_context_s *cmd_ctx);
48 int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
49 int str9x_erase(struct flash_bank_s *bank, int first, int last);
50 int str9x_protect(struct flash_bank_s *bank, int set, int first, int last);
51 int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
52 int str9x_probe(struct flash_bank_s *bank);
53 int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
54 int str9x_protect_check(struct flash_bank_s *bank);
55 int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size);
57 int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
59 flash_driver_t str9x_flash =
62 .register_commands = str9x_register_commands,
63 .flash_bank_command = str9x_flash_bank_command,
65 .protect = str9x_protect,
68 .auto_probe = str9x_probe,
69 .erase_check = default_flash_blank_check,
70 .protect_check = str9x_protect_check,
74 int str9x_register_commands(struct command_context_s *cmd_ctx)
76 command_t *str9x_cmd = register_command(cmd_ctx, NULL, "str9x", NULL, COMMAND_ANY, NULL);
78 register_command(cmd_ctx, str9x_cmd, "flash_config", str9x_handle_flash_config_command, COMMAND_EXEC,
79 "configure str9 flash controller");
84 int str9x_build_block_list(struct flash_bank_s *bank)
86 str9x_flash_bank_t *str9x_info = bank->driver_priv;
90 int b0_sectors = 0, b1_sectors = 0;
93 /* set if we have large flash str9 */
94 str9x_info->variant = 0;
95 str9x_info->bank1 = 0;
106 bank1start = 0x00100000;
107 str9x_info->variant = 1;
111 bank1start = 0x00200000;
112 str9x_info->variant = 1;
116 str9x_info->variant = 1;
117 str9x_info->bank1 = 1;
119 bank1start = bank->base;
122 str9x_info->bank1 = 1;
124 bank1start = bank->base;
127 LOG_ERROR("BUG: unknown bank->size encountered");
131 num_sectors = b0_sectors + b1_sectors;
133 bank->num_sectors = num_sectors;
134 bank->sectors = malloc(sizeof(flash_sector_t) * num_sectors);
135 str9x_info->sector_bits = malloc(sizeof(u32) * num_sectors);
139 for (i = 0; i < b0_sectors; i++)
141 bank->sectors[num_sectors].offset = offset;
142 bank->sectors[num_sectors].size = 0x10000;
143 offset += bank->sectors[i].size;
144 bank->sectors[num_sectors].is_erased = -1;
145 bank->sectors[num_sectors].is_protected = 1;
146 str9x_info->sector_bits[num_sectors++] = (1<<i);
149 for (i = 0; i < b1_sectors; i++)
151 bank->sectors[num_sectors].offset = offset;
152 bank->sectors[num_sectors].size = str9x_info->variant == 0 ? 0x2000 : 0x4000;
153 offset += bank->sectors[i].size;
154 bank->sectors[num_sectors].is_erased = -1;
155 bank->sectors[num_sectors].is_protected = 1;
156 if (str9x_info->variant)
157 str9x_info->sector_bits[num_sectors++] = (1<<i);
159 str9x_info->sector_bits[num_sectors++] = (1<<(i+8));
165 /* flash bank str9x <base> <size> 0 0 <target#>
167 int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
169 str9x_flash_bank_t *str9x_info;
173 LOG_WARNING("incomplete flash_bank str9x configuration");
174 return ERROR_FLASH_BANK_INVALID;
177 str9x_info = malloc(sizeof(str9x_flash_bank_t));
178 bank->driver_priv = str9x_info;
180 str9x_build_block_list(bank);
182 str9x_info->write_algorithm = NULL;
187 int str9x_protect_check(struct flash_bank_s *bank)
190 str9x_flash_bank_t *str9x_info = bank->driver_priv;
191 target_t *target = bank->target;
197 if (bank->target->state != TARGET_HALTED)
199 LOG_ERROR("Target not halted");
200 return ERROR_TARGET_NOT_HALTED;
203 /* read level one protection */
205 if (str9x_info->variant)
207 if (str9x_info->bank1)
209 adr = bank1start + 0x18;
210 if ((retval=target_write_u16(target, adr, 0x90))!=ERROR_OK)
214 if ((retval=target_read_u16(target, adr, (u16*)&status))!=ERROR_OK)
221 adr = bank1start + 0x14;
222 if ((retval=target_write_u16(target, adr, 0x90))!=ERROR_OK)
226 if ((retval=target_read_u32(target, adr, &status))!=ERROR_OK)
234 adr = bank1start + 0x10;
235 if ((retval=target_write_u16(target, adr, 0x90))!=ERROR_OK)
239 if ((retval=target_read_u16(target, adr, (u16*)&status))!=ERROR_OK)
245 /* read array command */
246 if ((retval=target_write_u16(target, adr, 0xFF))!=ERROR_OK)
251 for (i = 0; i < bank->num_sectors; i++)
253 if (status & str9x_info->sector_bits[i])
254 bank->sectors[i].is_protected = 1;
256 bank->sectors[i].is_protected = 0;
262 int str9x_erase(struct flash_bank_s *bank, int first, int last)
264 target_t *target = bank->target;
270 if (bank->target->state != TARGET_HALTED)
272 LOG_ERROR("Target not halted");
273 return ERROR_TARGET_NOT_HALTED;
276 /* Check if we erase whole bank */
277 if ((first == 0) && (last == (bank->num_sectors - 1)))
279 /* Optimize to run erase bank command instead of sector */
284 /* Erase sector command */
288 for (i = first; i <= last; i++)
291 adr = bank->base + bank->sectors[i].offset;
294 if ((retval=target_write_u16(target, adr, erase_cmd))!=ERROR_OK)
298 if ((retval=target_write_u16(target, adr, 0xD0))!=ERROR_OK)
304 if ((retval=target_write_u16(target, adr, 0x70))!=ERROR_OK)
310 if ((retval=target_read_u8(target, adr, &status))!=ERROR_OK)
319 /* clear status, also clear read array */
320 if ((retval=target_write_u16(target, adr, 0x50))!=ERROR_OK)
325 /* read array command */
326 if ((retval=target_write_u16(target, adr, 0xFF))!=ERROR_OK)
333 LOG_ERROR("error erasing flash bank, status: 0x%x", status);
334 return ERROR_FLASH_OPERATION_FAILED;
337 /* If we ran erase bank command, we are finished */
338 if (erase_cmd == 0x80)
342 for (i = first; i <= last; i++)
343 bank->sectors[i].is_erased = 1;
348 int str9x_protect(struct flash_bank_s *bank, int set, int first, int last)
350 target_t *target = bank->target;
355 if (bank->target->state != TARGET_HALTED)
357 LOG_ERROR("Target not halted");
358 return ERROR_TARGET_NOT_HALTED;
361 for (i = first; i <= last; i++)
363 /* Level One Protection */
365 adr = bank->base + bank->sectors[i].offset;
367 target_write_u16(target, adr, 0x60);
369 target_write_u16(target, adr, 0x01);
371 target_write_u16(target, adr, 0xD0);
374 target_read_u8(target, adr, &status);
376 /* clear status, also clear read array */
377 target_write_u16(target, adr, 0x50);
379 /* read array command */
380 target_write_u16(target, adr, 0xFF);
386 int str9x_write_block(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
388 str9x_flash_bank_t *str9x_info = bank->driver_priv;
389 target_t *target = bank->target;
390 u32 buffer_size = 8192;
391 working_area_t *source;
392 u32 address = bank->base + offset;
393 reg_param_t reg_params[4];
394 armv4_5_algorithm_t armv4_5_info;
395 int retval = ERROR_OK;
397 u32 str9x_flash_write_code[] = {
399 0xe3c14003, /* bic r4, r1, #3 */
400 0xe3a03040, /* mov r3, #0x40 */
401 0xe1c430b0, /* strh r3, [r4, #0] */
402 0xe0d030b2, /* ldrh r3, [r0], #2 */
403 0xe0c130b2, /* strh r3, [r1], #2 */
404 0xe3a03070, /* mov r3, #0x70 */
405 0xe1c430b0, /* strh r3, [r4, #0] */
407 0xe5d43000, /* ldrb r3, [r4, #0] */
408 0xe3130080, /* tst r3, #0x80 */
409 0x0afffffc, /* beq busy */
410 0xe3a05050, /* mov r5, #0x50 */
411 0xe1c450b0, /* strh r5, [r4, #0] */
412 0xe3a050ff, /* mov r5, #0xFF */
413 0xe1c450b0, /* strh r5, [r4, #0] */
414 0xe3130012, /* tst r3, #0x12 */
415 0x1a000001, /* bne exit */
416 0xe2522001, /* subs r2, r2, #1 */
417 0x1affffed, /* bne write */
419 0xeafffffe, /* b exit */
422 /* flash write code */
423 if (target_alloc_working_area(target, 4 * 19, &str9x_info->write_algorithm) != ERROR_OK)
425 LOG_WARNING("no working area available, can't do block memory writes");
426 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
429 target_write_buffer(target, str9x_info->write_algorithm->address, 19 * 4, (u8*)str9x_flash_write_code);
432 while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
435 if (buffer_size <= 256)
437 /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
438 if (str9x_info->write_algorithm)
439 target_free_working_area(target, str9x_info->write_algorithm);
441 LOG_WARNING("no large enough working area available, can't do block memory writes");
442 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
446 armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
447 armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
448 armv4_5_info.core_state = ARMV4_5_STATE_ARM;
450 init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
451 init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
452 init_reg_param(®_params[2], "r2", 32, PARAM_OUT);
453 init_reg_param(®_params[3], "r3", 32, PARAM_IN);
457 u32 thisrun_count = (count > (buffer_size / 2)) ? (buffer_size / 2) : count;
459 target_write_buffer(target, source->address, thisrun_count * 2, buffer);
461 buf_set_u32(reg_params[0].value, 0, 32, source->address);
462 buf_set_u32(reg_params[1].value, 0, 32, address);
463 buf_set_u32(reg_params[2].value, 0, 32, thisrun_count);
465 if ((retval = target->type->run_algorithm(target, 0, NULL, 4, reg_params, str9x_info->write_algorithm->address, str9x_info->write_algorithm->address + (18 * 4), 10000, &armv4_5_info)) != ERROR_OK)
467 LOG_ERROR("error executing str9x flash write algorithm");
468 retval = ERROR_FLASH_OPERATION_FAILED;
472 if (buf_get_u32(reg_params[3].value, 0, 32) != 0x80)
474 retval = ERROR_FLASH_OPERATION_FAILED;
478 buffer += thisrun_count * 2;
479 address += thisrun_count * 2;
480 count -= thisrun_count;
483 target_free_working_area(target, source);
484 target_free_working_area(target, str9x_info->write_algorithm);
486 destroy_reg_param(®_params[0]);
487 destroy_reg_param(®_params[1]);
488 destroy_reg_param(®_params[2]);
489 destroy_reg_param(®_params[3]);
494 int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
496 target_t *target = bank->target;
497 u32 words_remaining = (count / 2);
498 u32 bytes_remaining = (count & 0x00000001);
499 u32 address = bank->base + offset;
500 u32 bytes_written = 0;
503 u32 check_address = offset;
507 if (bank->target->state != TARGET_HALTED)
509 LOG_ERROR("Target not halted");
510 return ERROR_TARGET_NOT_HALTED;
515 LOG_WARNING("offset 0x%x breaks required 2-byte alignment", offset);
516 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
519 for (i = 0; i < bank->num_sectors; i++)
521 u32 sec_start = bank->sectors[i].offset;
522 u32 sec_end = sec_start + bank->sectors[i].size;
524 /* check if destination falls within the current sector */
525 if ((check_address >= sec_start) && (check_address < sec_end))
527 /* check if destination ends in the current sector */
528 if (offset + count < sec_end)
529 check_address = offset + count;
531 check_address = sec_end;
535 if (check_address != offset + count)
536 return ERROR_FLASH_DST_OUT_OF_BANK;
538 /* multiple half words (2-byte) to be programmed? */
539 if (words_remaining > 0)
541 /* try using a block write */
542 if ((retval = str9x_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK)
544 if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
546 /* if block write failed (no sufficient working area),
547 * we use normal (slow) single dword accesses */
548 LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
550 else if (retval == ERROR_FLASH_OPERATION_FAILED)
552 LOG_ERROR("flash writing failed with error code: 0x%x", retval);
553 return ERROR_FLASH_OPERATION_FAILED;
558 buffer += words_remaining * 2;
559 address += words_remaining * 2;
564 while (words_remaining > 0)
566 bank_adr = address & ~0x03;
568 /* write data command */
569 target_write_u16(target, bank_adr, 0x40);
570 target->type->write_memory(target, address, 2, 1, buffer + bytes_written);
572 /* get status command */
573 target_write_u16(target, bank_adr, 0x70);
576 target_read_u8(target, bank_adr, &status);
582 /* clear status reg and read array */
583 target_write_u16(target, bank_adr, 0x50);
584 target_write_u16(target, bank_adr, 0xFF);
587 return ERROR_FLASH_OPERATION_FAILED;
588 else if (status & 0x02)
589 return ERROR_FLASH_OPERATION_FAILED;
598 u8 last_halfword[2] = {0xff, 0xff};
601 while(bytes_remaining > 0)
603 last_halfword[i++] = *(buffer + bytes_written);
608 bank_adr = address & ~0x03;
610 /* write data comamnd */
611 target_write_u16(target, bank_adr, 0x40);
612 target->type->write_memory(target, address, 2, 1, last_halfword);
614 /* query status command */
615 target_write_u16(target, bank_adr, 0x70);
618 target_read_u8(target, bank_adr, &status);
624 /* clear status reg and read array */
625 target_write_u16(target, bank_adr, 0x50);
626 target_write_u16(target, bank_adr, 0xFF);
629 return ERROR_FLASH_OPERATION_FAILED;
630 else if (status & 0x02)
631 return ERROR_FLASH_OPERATION_FAILED;
637 int str9x_probe(struct flash_bank_s *bank)
642 int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
647 int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size)
649 snprintf(buf, buf_size, "str9x flash driver info" );
653 int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
655 str9x_flash_bank_t *str9x_info;
657 target_t *target = NULL;
661 return ERROR_COMMAND_SYNTAX_ERROR;
664 bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
667 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
671 str9x_info = bank->driver_priv;
673 target = bank->target;
675 if (bank->target->state != TARGET_HALTED)
677 LOG_ERROR("Target not halted");
678 return ERROR_TARGET_NOT_HALTED;
681 /* config flash controller */
682 target_write_u32(target, FLASH_BBSR, strtoul(args[1], NULL, 0));
683 target_write_u32(target, FLASH_NBBSR, strtoul(args[2], NULL, 0));
684 target_write_u32(target, FLASH_BBADR, (strtoul(args[3], NULL, 0) >> 2));
685 target_write_u32(target, FLASH_NBBADR, (strtoul(args[4], NULL, 0) >> 2));
687 /* set bit 18 instruction TCM order as per flash programming manual */
688 arm966e_write_cp15(target, 62, 0x40000);
690 /* enable flash bank 1 */
691 target_write_u32(target, FLASH_CR, 0x18);