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- /***************************************************************************
- * Copyright (C) 2005 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "replacements.h"
-
- #include "str9x.h"
- #include "flash.h"
- #include "target.h"
- #include "log.h"
- #include "armv4_5.h"
- #include "algorithm.h"
- #include "binarybuffer.h"
-
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
-
- str9x_mem_layout_t mem_layout_str9[] = {
- {0x00000000, 0x10000, 0x01},
- {0x00010000, 0x10000, 0x02},
- {0x00020000, 0x10000, 0x04},
- {0x00030000, 0x10000, 0x08},
- {0x00040000, 0x10000, 0x10},
- {0x00050000, 0x10000, 0x20},
- {0x00060000, 0x10000, 0x40},
- {0x00070000, 0x10000, 0x80},
- {0x00080000, 0x02000, 0x100},
- {0x00082000, 0x02000, 0x200},
- {0x00084000, 0x02000, 0x400},
- {0x00086000, 0x02000, 0x800}
- };
-
- int str9x_register_commands(struct command_context_s *cmd_ctx);
- int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
- int str9x_erase(struct flash_bank_s *bank, int first, int last);
- int str9x_protect(struct flash_bank_s *bank, int set, int first, int last);
- int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
- int str9x_probe(struct flash_bank_s *bank);
- int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
- int str9x_protect_check(struct flash_bank_s *bank);
- int str9x_erase_check(struct flash_bank_s *bank);
- int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size);
-
- int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-
- flash_driver_t str9x_flash =
- {
- .name = "str9x",
- .register_commands = str9x_register_commands,
- .flash_bank_command = str9x_flash_bank_command,
- .erase = str9x_erase,
- .protect = str9x_protect,
- .write = str9x_write,
- .probe = str9x_probe,
- .erase_check = str9x_erase_check,
- .protect_check = str9x_protect_check,
- .info = str9x_info
- };
-
- int str9x_register_commands(struct command_context_s *cmd_ctx)
- {
- command_t *str9x_cmd = register_command(cmd_ctx, NULL, "str9x", NULL, COMMAND_ANY, NULL);
-
- register_command(cmd_ctx, str9x_cmd, "flash_config", str9x_handle_flash_config_command, COMMAND_EXEC,
- "configure str9 flash controller");
-
- return ERROR_OK;
- }
-
- int str9x_build_block_list(struct flash_bank_s *bank)
- {
- str9x_flash_bank_t *str9x_info = bank->driver_priv;
-
- int i;
- int num_sectors = 0, b0_sectors = 0;
-
- switch (bank->size)
- {
- case 256 * 1024:
- b0_sectors = 4;
- break;
- case 512 * 1024:
- b0_sectors = 8;
- break;
- default:
- ERROR("BUG: unknown bank->size encountered");
- exit(-1);
- }
-
- num_sectors = b0_sectors + 2;
-
- bank->num_sectors = num_sectors;
- bank->sectors = malloc(sizeof(flash_sector_t) * num_sectors);
- str9x_info->sector_bits = malloc(sizeof(u32) * num_sectors);
-
- num_sectors = 0;
-
- for (i = 0; i < b0_sectors; i++)
- {
- bank->sectors[num_sectors].offset = mem_layout_str9[i].sector_start;
- bank->sectors[num_sectors].size = mem_layout_str9[i].sector_size;
- bank->sectors[num_sectors].is_erased = -1;
- bank->sectors[num_sectors].is_protected = 1;
- str9x_info->sector_bits[num_sectors++] = mem_layout_str9[i].sector_bit;
- }
-
- for (i = 8; i < 12; i++)
- {
- bank->sectors[num_sectors].offset = mem_layout_str9[i].sector_start;
- bank->sectors[num_sectors].size = mem_layout_str9[i].sector_size;
- bank->sectors[num_sectors].is_erased = -1;
- bank->sectors[num_sectors].is_protected = 1;
- str9x_info->sector_bits[num_sectors++] = mem_layout_str9[i].sector_bit;
- }
-
- return ERROR_OK;
- }
-
- /* flash bank str9x <base> <size> 0 0 <target#>
- */
- int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
- {
- str9x_flash_bank_t *str9x_info;
-
- if (argc < 6)
- {
- WARNING("incomplete flash_bank str9x configuration");
- return ERROR_FLASH_BANK_INVALID;
- }
-
- str9x_info = malloc(sizeof(str9x_flash_bank_t));
- bank->driver_priv = str9x_info;
-
- if (bank->base != 0x00000000)
- {
- WARNING("overriding flash base address for STR91x device with 0x00000000");
- bank->base = 0x00000000;
- }
-
- str9x_info->target = get_target_by_num(strtoul(args[5], NULL, 0));
- if (!str9x_info->target)
- {
- ERROR("no target '%s' configured", args[5]);
- exit(-1);
- }
-
- str9x_build_block_list(bank);
-
- str9x_info->write_algorithm = NULL;
-
- return ERROR_OK;
- }
-
- int str9x_blank_check(struct flash_bank_s *bank, int first, int last)
- {
- str9x_flash_bank_t *str9x_info = bank->driver_priv;
- target_t *target = str9x_info->target;
- u8 *buffer;
- int i;
- int nBytes;
-
- if ((first < 0) || (last > bank->num_sectors))
- return ERROR_FLASH_SECTOR_INVALID;
-
- if (str9x_info->target->state != TARGET_HALTED)
- {
- return ERROR_TARGET_NOT_HALTED;
- }
-
- buffer = malloc(256);
-
- for (i = first; i <= last; i++)
- {
- bank->sectors[i].is_erased = 1;
-
- target->type->read_memory(target, bank->base + bank->sectors[i].offset, 4, 256/4, buffer);
-
- for (nBytes = 0; nBytes < 256; nBytes++)
- {
- if (buffer[nBytes] != 0xFF)
- {
- bank->sectors[i].is_erased = 0;
- break;
- }
- }
- }
-
- free(buffer);
-
- return ERROR_OK;
- }
-
- int str9x_protect_check(struct flash_bank_s *bank)
- {
- str9x_flash_bank_t *str9x_info = bank->driver_priv;
- target_t *target = str9x_info->target;
-
- int i;
- u32 adr;
- u16 status;
-
- if (str9x_info->target->state != TARGET_HALTED)
- {
- return ERROR_TARGET_NOT_HALTED;
- }
-
- /* read level one protection */
-
- adr = mem_layout_str9[10].sector_start + 4;
-
- target_write_u32(target, adr, 0x90);
- target_read_u16(target, adr, &status);
- target_write_u32(target, adr, 0xFF);
-
- for (i = 0; i < bank->num_sectors; i++)
- {
- if (status & str9x_info->sector_bits[i])
- bank->sectors[i].is_protected = 1;
- else
- bank->sectors[i].is_protected = 0;
- }
-
- return ERROR_OK;
- }
-
- int str9x_erase(struct flash_bank_s *bank, int first, int last)
- {
- str9x_flash_bank_t *str9x_info = bank->driver_priv;
- target_t *target = str9x_info->target;
- int i;
- u32 adr;
- u8 status;
-
- if (str9x_info->target->state != TARGET_HALTED)
- {
- return ERROR_TARGET_NOT_HALTED;
- }
-
- for (i = first; i <= last; i++)
- {
- adr = bank->sectors[i].offset;
-
- /* erase sectors */
- target_write_u16(target, adr, 0x20);
- target_write_u16(target, adr, 0xD0);
-
- /* get status */
- target_write_u16(target, adr, 0x70);
-
- while (1) {
- target_read_u8(target, adr, &status);
- if( status & 0x80 )
- break;
- usleep(1000);
- }
-
- /* clear status, also clear read array */
- target_write_u16(target, adr, 0x50);
-
- /* read array command */
- target_write_u16(target, adr, 0xFF);
-
- if( status & 0x22 )
- {
- ERROR("error erasing flash bank, status: 0x%x", status);
- return ERROR_FLASH_OPERATION_FAILED;
- }
- }
-
- for (i = first; i <= last; i++)
- bank->sectors[i].is_erased = 1;
-
- return ERROR_OK;
- }
-
- int str9x_protect(struct flash_bank_s *bank, int set, int first, int last)
- {
- str9x_flash_bank_t *str9x_info = bank->driver_priv;
- target_t *target = str9x_info->target;
- int i;
- u32 adr;
- u8 status;
-
- if (str9x_info->target->state != TARGET_HALTED)
- {
- return ERROR_TARGET_NOT_HALTED;
- }
-
- for (i = first; i <= last; i++)
- {
- /* Level One Protection */
-
- adr = bank->sectors[i].offset;
-
- target_write_u16(target, adr, 0x60);
- if( set )
- target_write_u16(target, adr, 0x01);
- else
- target_write_u16(target, adr, 0xD0);
-
- /* query status */
- target_read_u8(target, adr, &status);
- }
-
- return ERROR_OK;
- }
-
- int str9x_write_block(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
- {
- str9x_flash_bank_t *str9x_info = bank->driver_priv;
- target_t *target = str9x_info->target;
- u32 buffer_size = 8192;
- working_area_t *source;
- u32 address = bank->base + offset;
- reg_param_t reg_params[4];
- armv4_5_algorithm_t armv4_5_info;
- int retval;
-
- u32 str9x_flash_write_code[] = {
- /* write: */
- 0xe3c14003, /* bic r4, r1, #3 */
- 0xe3a03040, /* mov r3, #0x40 */
- 0xe1c430b0, /* strh r3, [r4, #0] */
- 0xe0d030b2, /* ldrh r3, [r0], #2 */
- 0xe0c130b2, /* strh r3, [r1], #2 */
- 0xe3a03070, /* mov r3, #0x70 */
- 0xe1c430b0, /* strh r3, [r4, #0] */
- /* busy: */
- 0xe5d43000, /* ldrb r3, [r4, #0] */
- 0xe3130080, /* tst r3, #0x80 */
- 0x0afffffc, /* beq busy */
- 0xe3a05050, /* mov r5, #0x50 */
- 0xe1c450b0, /* strh r5, [r4, #0] */
- 0xe3a050ff, /* mov r5, #0xFF */
- 0xe1c450b0, /* strh r5, [r4, #0] */
- 0xe3130012, /* tst r3, #0x12 */
- 0x1a000001, /* bne exit */
- 0xe2522001, /* subs r2, r2, #1 */
- 0x1affffed, /* bne write */
- /* exit: */
- 0xeafffffe, /* b exit */
- };
-
- u8 str9x_flash_write_code_buf[76];
- int i;
-
- /* flash write code */
- if (!str9x_info->write_algorithm)
- {
- if (target_alloc_working_area(target, 4 * 19, &str9x_info->write_algorithm) != ERROR_OK)
- {
- WARNING("no working area available, can't do block memory writes");
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- };
-
- /* convert flash writing code into a buffer in target endianness */
- for (i = 0; i < 19; i++)
- target_buffer_set_u32(target, str9x_flash_write_code_buf + i*4, str9x_flash_write_code[i]);
-
- target_write_buffer(target, str9x_info->write_algorithm->address, 19 * 4, str9x_flash_write_code_buf);
- }
-
- /* memory buffer */
- while (target_alloc_working_area(target, buffer_size, &source) != ERROR_OK)
- {
- buffer_size /= 2;
- if (buffer_size <= 256)
- {
- /* if we already allocated the writing code, but failed to get a buffer, free the algorithm */
- if (str9x_info->write_algorithm)
- target_free_working_area(target, str9x_info->write_algorithm);
-
- WARNING("no large enough working area available, can't do block memory writes");
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- }
- };
-
- armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
- armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
- armv4_5_info.core_state = ARMV4_5_STATE_ARM;
-
- init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
- init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
- init_reg_param(®_params[2], "r2", 32, PARAM_OUT);
- init_reg_param(®_params[3], "r3", 32, PARAM_IN);
-
- while (count > 0)
- {
- u32 thisrun_count = (count > (buffer_size / 2)) ? (buffer_size / 2) : count;
-
- target_write_buffer(target, source->address, thisrun_count * 2, buffer);
-
- buf_set_u32(reg_params[0].value, 0, 32, source->address);
- buf_set_u32(reg_params[1].value, 0, 32, address);
- buf_set_u32(reg_params[2].value, 0, 32, thisrun_count);
-
- 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)
- {
- ERROR("error executing str9x flash write algorithm");
- return ERROR_FLASH_OPERATION_FAILED;
- }
-
- if (buf_get_u32(reg_params[3].value, 0, 32) != 0x80)
- {
- return ERROR_FLASH_OPERATION_FAILED;
- }
-
- buffer += thisrun_count * 2;
- address += thisrun_count * 2;
- count -= thisrun_count;
- }
-
- destroy_reg_param(®_params[0]);
- destroy_reg_param(®_params[1]);
- destroy_reg_param(®_params[2]);
- destroy_reg_param(®_params[3]);
-
- return ERROR_OK;
- }
-
- int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
- {
- str9x_flash_bank_t *str9x_info = bank->driver_priv;
- target_t *target = str9x_info->target;
- u32 words_remaining = (count / 2);
- u32 bytes_remaining = (count & 0x00000001);
- u32 address = bank->base + offset;
- u32 bytes_written = 0;
- u8 status;
- u32 retval;
- u32 check_address = offset;
- u32 bank_adr;
- int i;
-
- if (str9x_info->target->state != TARGET_HALTED)
- {
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if (offset & 0x1)
- {
- WARNING("offset 0x%x breaks required 2-byte alignment", offset);
- return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
- }
-
- for (i = 0; i < bank->num_sectors; i++)
- {
- u32 sec_start = bank->sectors[i].offset;
- u32 sec_end = sec_start + bank->sectors[i].size;
-
- /* check if destination falls within the current sector */
- if ((check_address >= sec_start) && (check_address < sec_end))
- {
- /* check if destination ends in the current sector */
- if (offset + count < sec_end)
- check_address = offset + count;
- else
- check_address = sec_end;
- }
- }
-
- if (check_address != offset + count)
- return ERROR_FLASH_DST_OUT_OF_BANK;
-
- /* multiple half words (2-byte) to be programmed? */
- if (words_remaining > 0)
- {
- /* try using a block write */
- if ((retval = str9x_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK)
- {
- if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
- {
- /* if block write failed (no sufficient working area),
- * we use normal (slow) single dword accesses */
- WARNING("couldn't use block writes, falling back to single memory accesses");
- }
- else if (retval == ERROR_FLASH_OPERATION_FAILED)
- {
- ERROR("flash writing failed with error code: 0x%x", retval);
- return ERROR_FLASH_OPERATION_FAILED;
- }
- }
- else
- {
- buffer += words_remaining * 2;
- address += words_remaining * 2;
- words_remaining = 0;
- }
- }
-
- while (words_remaining > 0)
- {
- bank_adr = address & 0x03;
-
- /* write data command */
- target_write_u16(target, bank_adr, 0x40);
- target->type->write_memory(target, address, 2, 1, buffer + bytes_written);
-
- /* get status command */
- target_write_u16(target, bank_adr, 0x70);
-
- while (1) {
- target_read_u8(target, bank_adr, &status);
- if( status & 0x80 )
- break;
- usleep(1000);
- }
-
- /* clear status reg and read array */
- target_write_u16(target, bank_adr, 0x50);
- target_write_u16(target, bank_adr, 0xFF);
-
- if (status & 0x10)
- return ERROR_FLASH_OPERATION_FAILED;
- else if (status & 0x02)
- return ERROR_FLASH_OPERATION_FAILED;
-
- bytes_written += 2;
- words_remaining--;
- address += 2;
- }
-
- if (bytes_remaining)
- {
- u8 last_halfword[2] = {0xff, 0xff};
- int i = 0;
-
- while(bytes_remaining > 0)
- {
- last_halfword[i++] = *(buffer + bytes_written);
- bytes_remaining--;
- bytes_written++;
- }
-
- bank_adr = address & 0x03;
-
- /* write data comamnd */
- target_write_u16(target, bank_adr, 0x40);
- target->type->write_memory(target, address, 2, 1, last_halfword);
-
- /* query status command */
- target_write_u16(target, bank_adr, 0x70);
-
- while (1) {
- target_read_u8(target, bank_adr, &status);
- if( status & 0x80 )
- break;
- usleep(1000);
- }
-
- /* clear status reg and read array */
- target_write_u16(target, bank_adr, 0x50);
- target_write_u16(target, bank_adr, 0xFF);
-
- if (status & 0x10)
- return ERROR_FLASH_OPERATION_FAILED;
- else if (status & 0x02)
- return ERROR_FLASH_OPERATION_FAILED;
- }
-
- return ERROR_OK;
- }
-
- int str9x_probe(struct flash_bank_s *bank)
- {
- return ERROR_OK;
- }
-
- int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
- {
- return ERROR_OK;
- }
-
- int str9x_erase_check(struct flash_bank_s *bank)
- {
- return str9x_blank_check(bank, 0, bank->num_sectors - 1);
- }
-
- int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size)
- {
- snprintf(buf, buf_size, "str9x flash driver info" );
- return ERROR_OK;
- }
-
- int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
- {
- str9x_flash_bank_t *str9x_info;
- flash_bank_t *bank;
- target_t *target = NULL;
-
- if (argc < 4)
- {
- command_print(cmd_ctx, "usage: str9x flash_config b0size b1size b0start b1start");
- return ERROR_OK;
- }
-
- bank = get_flash_bank_by_num(0);
- str9x_info = bank->driver_priv;
- target = str9x_info->target;
-
- if (str9x_info->target->state != TARGET_HALTED)
- {
- return ERROR_TARGET_NOT_HALTED;
- }
-
- /* config flash controller */
- target_write_u32(target, FLASH_BBSR, strtoul(args[0], NULL, 0));
- target_write_u32(target, FLASH_NBBSR, strtoul(args[1], NULL, 0));
- target_write_u32(target, FLASH_BBADR, (strtoul(args[2], NULL, 0) >> 2));
- target_write_u32(target, FLASH_NBBADR, (strtoul(args[3], NULL, 0) >> 2));
-
- /* enable flash bank 1 */
- target_write_u32(target, FLASH_CR, 0x18);
- return ERROR_OK;
- }
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