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 ***************************************************************************/
24 #include "replacements.h"
32 #include "algorithm.h"
33 #include "binarybuffer.h"
39 str9x_mem_layout_t mem_layout_str9bank0[] = {
40 {0x00000000, 0x10000, 0x01},
41 {0x00010000, 0x10000, 0x02},
42 {0x00020000, 0x10000, 0x04},
43 {0x00030000, 0x10000, 0x08},
44 {0x00040000, 0x10000, 0x10},
45 {0x00050000, 0x10000, 0x20},
46 {0x00060000, 0x10000, 0x40},
47 {0x00070000, 0x10000, 0x80},
50 str9x_mem_layout_t mem_layout_str9bank1[] = {
51 {0x00000000, 0x02000, 0x100},
52 {0x00002000, 0x02000, 0x200},
53 {0x00004000, 0x02000, 0x400},
54 {0x00006000, 0x02000, 0x800}
57 static u32 bank1start = 0x00080000;
59 int str9x_register_commands(struct command_context_s *cmd_ctx);
60 int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
61 int str9x_erase(struct flash_bank_s *bank, int first, int last);
62 int str9x_protect(struct flash_bank_s *bank, int set, int first, int last);
63 int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
64 int str9x_probe(struct flash_bank_s *bank);
65 int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
66 int str9x_protect_check(struct flash_bank_s *bank);
67 int str9x_erase_check(struct flash_bank_s *bank);
68 int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size);
70 int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
72 flash_driver_t str9x_flash =
75 .register_commands = str9x_register_commands,
76 .flash_bank_command = str9x_flash_bank_command,
78 .protect = str9x_protect,
81 .auto_probe = str9x_probe,
82 .erase_check = str9x_erase_check,
83 .protect_check = str9x_protect_check,
87 int str9x_register_commands(struct command_context_s *cmd_ctx)
89 command_t *str9x_cmd = register_command(cmd_ctx, NULL, "str9x", NULL, COMMAND_ANY, NULL);
91 register_command(cmd_ctx, str9x_cmd, "flash_config", str9x_handle_flash_config_command, COMMAND_EXEC,
92 "configure str9 flash controller");
97 int str9x_build_block_list(struct flash_bank_s *bank)
99 str9x_flash_bank_t *str9x_info = bank->driver_priv;
103 int b0_sectors = 0, b1_sectors = 0;
115 bank1start = bank->base;
118 ERROR("BUG: unknown bank->size encountered");
122 num_sectors = b0_sectors + b1_sectors;
124 bank->num_sectors = num_sectors;
125 bank->sectors = malloc(sizeof(flash_sector_t) * num_sectors);
126 str9x_info->sector_bits = malloc(sizeof(u32) * num_sectors);
130 for (i = 0; i < b0_sectors; i++)
132 bank->sectors[num_sectors].offset = mem_layout_str9bank0[i].sector_start;
133 bank->sectors[num_sectors].size = mem_layout_str9bank0[i].sector_size;
134 bank->sectors[num_sectors].is_erased = -1;
135 bank->sectors[num_sectors].is_protected = 1;
136 str9x_info->sector_bits[num_sectors++] = mem_layout_str9bank0[i].sector_bit;
139 for (i = 0; i < b1_sectors; i++)
141 bank->sectors[num_sectors].offset = mem_layout_str9bank1[i].sector_start;
142 bank->sectors[num_sectors].size = mem_layout_str9bank1[i].sector_size;
143 bank->sectors[num_sectors].is_erased = -1;
144 bank->sectors[num_sectors].is_protected = 1;
145 str9x_info->sector_bits[num_sectors++] = mem_layout_str9bank1[i].sector_bit;
151 /* flash bank str9x <base> <size> 0 0 <target#>
153 int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
155 str9x_flash_bank_t *str9x_info;
159 WARNING("incomplete flash_bank str9x configuration");
160 return ERROR_FLASH_BANK_INVALID;
163 str9x_info = malloc(sizeof(str9x_flash_bank_t));
164 bank->driver_priv = str9x_info;
166 str9x_build_block_list(bank);
168 str9x_info->write_algorithm = NULL;
173 int str9x_blank_check(struct flash_bank_s *bank, int first, int last)
175 target_t *target = bank->target;
180 if ((first < 0) || (last > bank->num_sectors))
181 return ERROR_FLASH_SECTOR_INVALID;
183 if (bank->target->state != TARGET_HALTED)
185 return ERROR_TARGET_NOT_HALTED;
188 buffer = malloc(256);
190 for (i = first; i <= last; i++)
192 bank->sectors[i].is_erased = 1;
194 target->type->read_memory(target, bank->base + bank->sectors[i].offset, 4, 256/4, buffer);
196 for (nBytes = 0; nBytes < 256; nBytes++)
198 if (buffer[nBytes] != 0xFF)
200 bank->sectors[i].is_erased = 0;
211 int str9x_protect_check(struct flash_bank_s *bank)
213 str9x_flash_bank_t *str9x_info = bank->driver_priv;
214 target_t *target = bank->target;
220 if (bank->target->state != TARGET_HALTED)
222 return ERROR_TARGET_NOT_HALTED;
225 /* read level one protection */
227 adr = bank1start + 0x10;
229 target_write_u16(target, adr, 0x90);
230 target_read_u16(target, adr, &status);
231 target_write_u16(target, adr, 0xFF);
233 for (i = 0; i < bank->num_sectors; i++)
235 if (status & str9x_info->sector_bits[i])
236 bank->sectors[i].is_protected = 1;
238 bank->sectors[i].is_protected = 0;
244 int str9x_erase(struct flash_bank_s *bank, int first, int last)
246 target_t *target = bank->target;
251 if (bank->target->state != TARGET_HALTED)
253 return ERROR_TARGET_NOT_HALTED;
256 for (i = first; i <= last; i++)
258 adr = bank->base + bank->sectors[i].offset;
261 target_write_u16(target, adr, 0x20);
262 target_write_u16(target, adr, 0xD0);
265 target_write_u16(target, adr, 0x70);
268 target_read_u8(target, adr, &status);
274 /* clear status, also clear read array */
275 target_write_u16(target, adr, 0x50);
277 /* read array command */
278 target_write_u16(target, adr, 0xFF);
282 ERROR("error erasing flash bank, status: 0x%x", status);
283 return ERROR_FLASH_OPERATION_FAILED;
287 for (i = first; i <= last; i++)
288 bank->sectors[i].is_erased = 1;
293 int str9x_protect(struct flash_bank_s *bank, int set, int first, int last)
295 target_t *target = bank->target;
300 if (bank->target->state != TARGET_HALTED)
302 return ERROR_TARGET_NOT_HALTED;
305 for (i = first; i <= last; i++)
307 /* Level One Protection */
309 adr = bank->base + bank->sectors[i].offset;
311 target_write_u16(target, adr, 0x60);
313 target_write_u16(target, adr, 0x01);
315 target_write_u16(target, adr, 0xD0);
318 target_read_u8(target, adr, &status);
324 int str9x_write_block(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
326 str9x_flash_bank_t *str9x_info = bank->driver_priv;
327 target_t *target = bank->target;
328 u32 buffer_size = 8192;
329 working_area_t *source;
330 u32 address = bank->base + offset;
331 reg_param_t reg_params[4];
332 armv4_5_algorithm_t armv4_5_info;
335 u32 str9x_flash_write_code[] = {
337 0xe3c14003, /* bic r4, r1, #3 */
338 0xe3a03040, /* mov r3, #0x40 */
339 0xe1c430b0, /* strh r3, [r4, #0] */
340 0xe0d030b2, /* ldrh r3, [r0], #2 */
341 0xe0c130b2, /* strh r3, [r1], #2 */
342 0xe3a03070, /* mov r3, #0x70 */
343 0xe1c430b0, /* strh r3, [r4, #0] */
345 0xe5d43000, /* ldrb r3, [r4, #0] */
346 0xe3130080, /* tst r3, #0x80 */
347 0x0afffffc, /* beq busy */
348 0xe3a05050, /* mov r5, #0x50 */
349 0xe1c450b0, /* strh r5, [r4, #0] */
350 0xe3a050ff, /* mov r5, #0xFF */
351 0xe1c450b0, /* strh r5, [r4, #0] */
352 0xe3130012, /* tst r3, #0x12 */
353 0x1a000001, /* bne exit */
354 0xe2522001, /* subs r2, r2, #1 */
355 0x1affffed, /* bne write */
357 0xeafffffe, /* b exit */
360 /* flash write code */
361 if (target_alloc_working_area(target, 4 * 19, &str9x_info->write_algorithm) != ERROR_OK)
363 WARNING("no working area available, can't do block memory writes");
364 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
367 target_write_buffer(target, str9x_info->write_algorithm->address, 19 * 4, (u8*)str9x_flash_write_code);
370 while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
373 if (buffer_size <= 256)
375 /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
376 if (str9x_info->write_algorithm)
377 target_free_working_area(target, str9x_info->write_algorithm);
379 WARNING("no large enough working area available, can't do block memory writes");
380 return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
384 armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
385 armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
386 armv4_5_info.core_state = ARMV4_5_STATE_ARM;
388 init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
389 init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
390 init_reg_param(®_params[2], "r2", 32, PARAM_OUT);
391 init_reg_param(®_params[3], "r3", 32, PARAM_IN);
395 u32 thisrun_count = (count > (buffer_size / 2)) ? (buffer_size / 2) : count;
397 target_write_buffer(target, source->address, thisrun_count * 2, buffer);
399 buf_set_u32(reg_params[0].value, 0, 32, source->address);
400 buf_set_u32(reg_params[1].value, 0, 32, address);
401 buf_set_u32(reg_params[2].value, 0, 32, thisrun_count);
403 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)
405 target_free_working_area(target, source);
406 target_free_working_area(target, str9x_info->write_algorithm);
407 ERROR("error executing str9x flash write algorithm");
408 return ERROR_FLASH_OPERATION_FAILED;
411 if (buf_get_u32(reg_params[3].value, 0, 32) != 0x80)
413 return ERROR_FLASH_OPERATION_FAILED;
416 buffer += thisrun_count * 2;
417 address += thisrun_count * 2;
418 count -= thisrun_count;
421 target_free_working_area(target, source);
422 target_free_working_area(target, str9x_info->write_algorithm);
424 destroy_reg_param(®_params[0]);
425 destroy_reg_param(®_params[1]);
426 destroy_reg_param(®_params[2]);
427 destroy_reg_param(®_params[3]);
432 int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
434 target_t *target = bank->target;
435 u32 words_remaining = (count / 2);
436 u32 bytes_remaining = (count & 0x00000001);
437 u32 address = bank->base + offset;
438 u32 bytes_written = 0;
441 u32 check_address = offset;
445 if (bank->target->state != TARGET_HALTED)
447 return ERROR_TARGET_NOT_HALTED;
452 WARNING("offset 0x%x breaks required 2-byte alignment", offset);
453 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
456 for (i = 0; i < bank->num_sectors; i++)
458 u32 sec_start = bank->sectors[i].offset;
459 u32 sec_end = sec_start + bank->sectors[i].size;
461 /* check if destination falls within the current sector */
462 if ((check_address >= sec_start) && (check_address < sec_end))
464 /* check if destination ends in the current sector */
465 if (offset + count < sec_end)
466 check_address = offset + count;
468 check_address = sec_end;
472 if (check_address != offset + count)
473 return ERROR_FLASH_DST_OUT_OF_BANK;
475 /* multiple half words (2-byte) to be programmed? */
476 if (words_remaining > 0)
478 /* try using a block write */
479 if ((retval = str9x_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK)
481 if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
483 /* if block write failed (no sufficient working area),
484 * we use normal (slow) single dword accesses */
485 WARNING("couldn't use block writes, falling back to single memory accesses");
487 else if (retval == ERROR_FLASH_OPERATION_FAILED)
489 ERROR("flash writing failed with error code: 0x%x", retval);
490 return ERROR_FLASH_OPERATION_FAILED;
495 buffer += words_remaining * 2;
496 address += words_remaining * 2;
501 while (words_remaining > 0)
503 bank_adr = address & ~0x03;
505 /* write data command */
506 target_write_u16(target, bank_adr, 0x40);
507 target->type->write_memory(target, address, 2, 1, buffer + bytes_written);
509 /* get status command */
510 target_write_u16(target, bank_adr, 0x70);
513 target_read_u8(target, bank_adr, &status);
519 /* clear status reg and read array */
520 target_write_u16(target, bank_adr, 0x50);
521 target_write_u16(target, bank_adr, 0xFF);
524 return ERROR_FLASH_OPERATION_FAILED;
525 else if (status & 0x02)
526 return ERROR_FLASH_OPERATION_FAILED;
535 u8 last_halfword[2] = {0xff, 0xff};
538 while(bytes_remaining > 0)
540 last_halfword[i++] = *(buffer + bytes_written);
545 bank_adr = address & ~0x03;
547 /* write data comamnd */
548 target_write_u16(target, bank_adr, 0x40);
549 target->type->write_memory(target, address, 2, 1, last_halfword);
551 /* query status command */
552 target_write_u16(target, bank_adr, 0x70);
555 target_read_u8(target, bank_adr, &status);
561 /* clear status reg and read array */
562 target_write_u16(target, bank_adr, 0x50);
563 target_write_u16(target, bank_adr, 0xFF);
566 return ERROR_FLASH_OPERATION_FAILED;
567 else if (status & 0x02)
568 return ERROR_FLASH_OPERATION_FAILED;
574 int str9x_probe(struct flash_bank_s *bank)
579 int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
584 int str9x_erase_check(struct flash_bank_s *bank)
586 return str9x_blank_check(bank, 0, bank->num_sectors - 1);
589 int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size)
591 snprintf(buf, buf_size, "str9x flash driver info" );
595 int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
597 str9x_flash_bank_t *str9x_info;
599 target_t *target = NULL;
603 return ERROR_COMMAND_SYNTAX_ERROR;
606 bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
609 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
613 str9x_info = bank->driver_priv;
615 target = bank->target;
617 if (bank->target->state != TARGET_HALTED)
619 return ERROR_TARGET_NOT_HALTED;
622 /* config flash controller */
623 target_write_u32(target, FLASH_BBSR, strtoul(args[1], NULL, 0));
624 target_write_u32(target, FLASH_NBBSR, strtoul(args[2], NULL, 0));
625 target_write_u32(target, FLASH_BBADR, (strtoul(args[3], NULL, 0) >> 2));
626 target_write_u32(target, FLASH_NBBADR, (strtoul(args[4], NULL, 0) >> 2));
628 /* set bit 18 instruction TCM order as per flash programming manual */
629 arm966e_write_cp15(target, 62, 0x40000);
631 /* enable flash bank 1 */
632 target_write_u32(target, FLASH_CR, 0x18);