- /***************************************************************************
- * Copyright (C) 2005 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * Copyright (C) 2008 by Spencer Oliver *
- * spen@spen-soft.co.uk *
- * *
- * Copyright (C) 2010 Øyvind Harboe *
- * oyvind.harboe@zylin.com *
- * *
- * 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., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
- ***************************************************************************/
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "imp.h"
- #include <target/arm.h>
- #include <helper/binarybuffer.h>
- #include <target/algorithm.h>
-
- /* Flash registers */
-
- #define FLASH_CR0 0x00000000
- #define FLASH_CR1 0x00000004
- #define FLASH_DR0 0x00000008
- #define FLASH_DR1 0x0000000C
- #define FLASH_AR 0x00000010
- #define FLASH_ER 0x00000014
- #define FLASH_NVWPAR 0x0000DFB0
- #define FLASH_NVAPR0 0x0000DFB8
- #define FLASH_NVAPR1 0x0000DFBC
-
- /* FLASH_CR0 register bits */
-
- #define FLASH_WMS 0x80000000
- #define FLASH_SUSP 0x40000000
- #define FLASH_WPG 0x20000000
- #define FLASH_DWPG 0x10000000
- #define FLASH_SER 0x08000000
- #define FLASH_SPR 0x01000000
- #define FLASH_BER 0x04000000
- #define FLASH_MER 0x02000000
- #define FLASH_LOCK 0x00000010
- #define FLASH_BSYA1 0x00000004
- #define FLASH_BSYA0 0x00000002
-
- /* FLASH_CR1 register bits */
-
- #define FLASH_B1S 0x02000000
- #define FLASH_B0S 0x01000000
- #define FLASH_B1F1 0x00020000
- #define FLASH_B1F0 0x00010000
- #define FLASH_B0F7 0x00000080
- #define FLASH_B0F6 0x00000040
- #define FLASH_B0F5 0x00000020
- #define FLASH_B0F4 0x00000010
- #define FLASH_B0F3 0x00000008
- #define FLASH_B0F2 0x00000004
- #define FLASH_B0F1 0x00000002
- #define FLASH_B0F0 0x00000001
-
- /* FLASH_ER register bits */
-
- #define FLASH_WPF 0x00000100
- #define FLASH_RESER 0x00000080
- #define FLASH_SEQER 0x00000040
- #define FLASH_10ER 0x00000008
- #define FLASH_PGER 0x00000004
- #define FLASH_ERER 0x00000002
- #define FLASH_ERR 0x00000001
-
-
- struct str7x_flash_bank {
- uint32_t *sector_bits;
- uint32_t disable_bit;
- uint32_t busy_bits;
- uint32_t register_base;
- };
-
- struct str7x_mem_layout {
- uint32_t sector_start;
- uint32_t sector_size;
- uint32_t sector_bit;
- };
-
- enum str7x_status_codes {
- STR7X_CMD_SUCCESS = 0,
- STR7X_INVALID_COMMAND = 1,
- STR7X_SRC_ADDR_ERROR = 2,
- STR7X_DST_ADDR_ERROR = 3,
- STR7X_SRC_ADDR_NOT_MAPPED = 4,
- STR7X_DST_ADDR_NOT_MAPPED = 5,
- STR7X_COUNT_ERROR = 6,
- STR7X_INVALID_SECTOR = 7,
- STR7X_SECTOR_NOT_BLANK = 8,
- STR7X_SECTOR_NOT_PREPARED = 9,
- STR7X_COMPARE_ERROR = 10,
- STR7X_BUSY = 11
- };
-
- static const struct str7x_mem_layout mem_layout_str7bank0[] = {
- {0x00000000, 0x02000, 0x01},
- {0x00002000, 0x02000, 0x02},
- {0x00004000, 0x02000, 0x04},
- {0x00006000, 0x02000, 0x08},
- {0x00008000, 0x08000, 0x10},
- {0x00010000, 0x10000, 0x20},
- {0x00020000, 0x10000, 0x40},
- {0x00030000, 0x10000, 0x80}
- };
-
- static const struct str7x_mem_layout mem_layout_str7bank1[] = {
- {0x00000000, 0x02000, 0x10000},
- {0x00002000, 0x02000, 0x20000}
- };
-
- static int str7x_get_flash_adr(struct flash_bank *bank, uint32_t reg)
- {
- struct str7x_flash_bank *str7x_info = bank->driver_priv;
- return str7x_info->register_base | reg;
- }
-
- static int str7x_build_block_list(struct flash_bank *bank)
- {
- struct str7x_flash_bank *str7x_info = bank->driver_priv;
-
- int i;
- int num_sectors;
- int b0_sectors = 0, b1_sectors = 0;
-
- switch (bank->size) {
- case 16 * 1024:
- b1_sectors = 2;
- break;
- case 64 * 1024:
- b0_sectors = 5;
- break;
- case 128 * 1024:
- b0_sectors = 6;
- break;
- case 256 * 1024:
- b0_sectors = 8;
- break;
- default:
- LOG_ERROR("BUG: unknown bank->size encountered");
- exit(-1);
- }
-
- num_sectors = b0_sectors + b1_sectors;
-
- bank->num_sectors = num_sectors;
- bank->sectors = malloc(sizeof(struct flash_sector) * num_sectors);
- str7x_info->sector_bits = malloc(sizeof(uint32_t) * num_sectors);
-
- num_sectors = 0;
-
- for (i = 0; i < b0_sectors; i++) {
- bank->sectors[num_sectors].offset = mem_layout_str7bank0[i].sector_start;
- bank->sectors[num_sectors].size = mem_layout_str7bank0[i].sector_size;
- bank->sectors[num_sectors].is_erased = -1;
- /* the reset_init handler marks all the sectors unprotected,
- * matching hardware after reset; keep the driver in sync
- */
- bank->sectors[num_sectors].is_protected = 0;
- str7x_info->sector_bits[num_sectors++] = mem_layout_str7bank0[i].sector_bit;
- }
-
- for (i = 0; i < b1_sectors; i++) {
- bank->sectors[num_sectors].offset = mem_layout_str7bank1[i].sector_start;
- bank->sectors[num_sectors].size = mem_layout_str7bank1[i].sector_size;
- bank->sectors[num_sectors].is_erased = -1;
- /* the reset_init handler marks all the sectors unprotected,
- * matching hardware after reset; keep the driver in sync
- */
- bank->sectors[num_sectors].is_protected = 0;
- str7x_info->sector_bits[num_sectors++] = mem_layout_str7bank1[i].sector_bit;
- }
-
- return ERROR_OK;
- }
-
- /* flash bank str7x <base> <size> 0 0 <target#> <str71_variant>
- */
- FLASH_BANK_COMMAND_HANDLER(str7x_flash_bank_command)
- {
- struct str7x_flash_bank *str7x_info;
-
- if (CMD_ARGC < 7)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- str7x_info = malloc(sizeof(struct str7x_flash_bank));
- bank->driver_priv = str7x_info;
-
- /* set default bits for str71x flash */
- str7x_info->busy_bits = (FLASH_LOCK | FLASH_BSYA1 | FLASH_BSYA0);
- str7x_info->disable_bit = (1 << 1);
-
- if (strcmp(CMD_ARGV[6], "STR71x") == 0)
- str7x_info->register_base = 0x40100000;
- else if (strcmp(CMD_ARGV[6], "STR73x") == 0) {
- str7x_info->register_base = 0x80100000;
- str7x_info->busy_bits = (FLASH_LOCK | FLASH_BSYA0);
- } else if (strcmp(CMD_ARGV[6], "STR75x") == 0) {
- str7x_info->register_base = 0x20100000;
- str7x_info->disable_bit = (1 << 0);
- } else {
- LOG_ERROR("unknown STR7x variant: '%s'", CMD_ARGV[6]);
- free(str7x_info);
- return ERROR_FLASH_BANK_INVALID;
- }
-
- str7x_build_block_list(bank);
-
- return ERROR_OK;
- }
-
- /* wait for flash to become idle or report errors.
-
- FIX!!! what's the maximum timeout??? The documentation doesn't
- state any maximum time.... by inspection it seems > 1000ms is to be
- expected.
-
- 10000ms is long enough that it should cover anything, yet not
- quite be equivalent to an infinite loop.
-
- */
- static int str7x_waitbusy(struct flash_bank *bank)
- {
- int err;
- int i;
- struct target *target = bank->target;
- struct str7x_flash_bank *str7x_info = bank->driver_priv;
-
- for (i = 0 ; i < 10000; i++) {
- uint32_t retval;
- err = target_read_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), &retval);
- if (err != ERROR_OK)
- return err;
-
- if ((retval & str7x_info->busy_bits) == 0)
- return ERROR_OK;
-
- alive_sleep(1);
- }
- LOG_ERROR("Timed out waiting for str7x flash");
- return ERROR_FAIL;
- }
-
-
- static int str7x_result(struct flash_bank *bank)
- {
- struct target *target = bank->target;
- uint32_t flash_flags;
-
- int retval;
- retval = target_read_u32(target, str7x_get_flash_adr(bank, FLASH_ER), &flash_flags);
- if (retval != ERROR_OK)
- return retval;
-
- if (flash_flags & FLASH_WPF) {
- LOG_ERROR("str7x hw write protection set");
- retval = ERROR_FAIL;
- }
- if (flash_flags & FLASH_RESER) {
- LOG_ERROR("str7x suspended program erase not resumed");
- retval = ERROR_FAIL;
- }
- if (flash_flags & FLASH_10ER) {
- LOG_ERROR("str7x trying to set bit to 1 when it is already 0");
- retval = ERROR_FAIL;
- }
- if (flash_flags & FLASH_PGER) {
- LOG_ERROR("str7x program error");
- retval = ERROR_FAIL;
- }
- if (flash_flags & FLASH_ERER) {
- LOG_ERROR("str7x erase error");
- retval = ERROR_FAIL;
- }
- if (retval == ERROR_OK) {
- if (flash_flags & FLASH_ERR) {
- /* this should always be set if one of the others are set... */
- LOG_ERROR("str7x write operation failed / bad setup");
- retval = ERROR_FAIL;
- }
- }
-
- return retval;
- }
-
- static int str7x_protect_check(struct flash_bank *bank)
- {
- struct str7x_flash_bank *str7x_info = bank->driver_priv;
- struct target *target = bank->target;
-
- int i;
- uint32_t flash_flags;
-
- if (bank->target->state != TARGET_HALTED) {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- int retval;
- retval = target_read_u32(target, str7x_get_flash_adr(bank, FLASH_NVWPAR), &flash_flags);
- if (retval != ERROR_OK)
- return retval;
-
- for (i = 0; i < bank->num_sectors; i++) {
- if (flash_flags & str7x_info->sector_bits[i])
- bank->sectors[i].is_protected = 0;
- else
- bank->sectors[i].is_protected = 1;
- }
-
- return ERROR_OK;
- }
-
- static int str7x_erase(struct flash_bank *bank, int first, int last)
- {
- struct str7x_flash_bank *str7x_info = bank->driver_priv;
- struct target *target = bank->target;
-
- int i;
- uint32_t cmd;
- uint32_t sectors = 0;
- int err;
-
- if (bank->target->state != TARGET_HALTED) {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- for (i = first; i <= last; i++)
- sectors |= str7x_info->sector_bits[i];
-
- LOG_DEBUG("sectors: 0x%" PRIx32 "", sectors);
-
- /* clear FLASH_ER register */
- err = target_write_u32(target, str7x_get_flash_adr(bank, FLASH_ER), 0x0);
- if (err != ERROR_OK)
- return err;
-
- cmd = FLASH_SER;
- err = target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
- if (err != ERROR_OK)
- return err;
-
- cmd = sectors;
- err = target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR1), cmd);
- if (err != ERROR_OK)
- return err;
-
- cmd = FLASH_SER | FLASH_WMS;
- err = target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
- if (err != ERROR_OK)
- return err;
-
- err = str7x_waitbusy(bank);
- if (err != ERROR_OK)
- return err;
-
- err = str7x_result(bank);
- if (err != ERROR_OK)
- return err;
-
- for (i = first; i <= last; i++)
- bank->sectors[i].is_erased = 1;
-
- return ERROR_OK;
- }
-
- static int str7x_protect(struct flash_bank *bank, int set, int first, int last)
- {
- struct str7x_flash_bank *str7x_info = bank->driver_priv;
- struct target *target = bank->target;
- int i;
- uint32_t cmd;
- uint32_t protect_blocks;
-
- if (bank->target->state != TARGET_HALTED) {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- protect_blocks = 0xFFFFFFFF;
-
- if (set) {
- for (i = first; i <= last; i++)
- protect_blocks &= ~(str7x_info->sector_bits[i]);
- }
-
- /* clear FLASH_ER register */
- int err;
- err = target_write_u32(target, str7x_get_flash_adr(bank, FLASH_ER), 0x0);
- if (err != ERROR_OK)
- return err;
-
- cmd = FLASH_SPR;
- err = target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
- if (err != ERROR_OK)
- return err;
-
- cmd = str7x_get_flash_adr(bank, FLASH_NVWPAR);
- err = target_write_u32(target, str7x_get_flash_adr(bank, FLASH_AR), cmd);
- if (err != ERROR_OK)
- return err;
-
- cmd = protect_blocks;
- err = target_write_u32(target, str7x_get_flash_adr(bank, FLASH_DR0), cmd);
- if (err != ERROR_OK)
- return err;
-
- cmd = FLASH_SPR | FLASH_WMS;
- err = target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
- if (err != ERROR_OK)
- return err;
-
- err = str7x_waitbusy(bank);
- if (err != ERROR_OK)
- return err;
-
- err = str7x_result(bank);
- if (err != ERROR_OK)
- return err;
-
- return ERROR_OK;
- }
-
- static int str7x_write_block(struct flash_bank *bank, const uint8_t *buffer,
- uint32_t offset, uint32_t count)
- {
- struct str7x_flash_bank *str7x_info = bank->driver_priv;
- struct target *target = bank->target;
- uint32_t buffer_size = 32768;
- struct working_area *write_algorithm;
- struct working_area *source;
- uint32_t address = bank->base + offset;
- struct reg_param reg_params[6];
- struct arm_algorithm arm_algo;
- int retval = ERROR_OK;
-
- /* see contib/loaders/flash/str7x.s for src */
-
- static const uint32_t str7x_flash_write_code[] = {
- /* write: */
- 0xe3a04201, /* mov r4, #0x10000000 */
- 0xe5824000, /* str r4, [r2, #0x0] */
- 0xe5821010, /* str r1, [r2, #0x10] */
- 0xe4904004, /* ldr r4, [r0], #4 */
- 0xe5824008, /* str r4, [r2, #0x8] */
- 0xe4904004, /* ldr r4, [r0], #4 */
- 0xe582400c, /* str r4, [r2, #0xc] */
- 0xe3a04209, /* mov r4, #0x90000000 */
- 0xe5824000, /* str r4, [r2, #0x0] */
- /* busy: */
- 0xe5924000, /* ldr r4, [r2, #0x0] */
- 0xe1140005, /* tst r4, r5 */
- 0x1afffffc, /* bne busy */
- 0xe5924014, /* ldr r4, [r2, #0x14] */
- 0xe31400ff, /* tst r4, #0xff */
- 0x03140c01, /* tsteq r4, #0x100 */
- 0x1a000002, /* bne exit */
- 0xe2811008, /* add r1, r1, #0x8 */
- 0xe2533001, /* subs r3, r3, #1 */
- 0x1affffec, /* bne write */
- /* exit: */
- 0xeafffffe, /* b exit */
- };
-
- /* flash write code */
- if (target_alloc_working_area_try(target, sizeof(str7x_flash_write_code),
- &write_algorithm) != ERROR_OK) {
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- }
-
- uint8_t code[sizeof(str7x_flash_write_code)];
- target_buffer_set_u32_array(target, code, ARRAY_SIZE(str7x_flash_write_code),
- str7x_flash_write_code);
- target_write_buffer(target, write_algorithm->address, sizeof(code), code);
-
- /* memory buffer */
- while (target_alloc_working_area_try(target, buffer_size, &source) != ERROR_OK) {
- buffer_size /= 2;
- if (buffer_size <= 256) {
- /* we already allocated the writing code, but failed to get a
- * buffer, free the algorithm */
- target_free_working_area(target, write_algorithm);
-
- LOG_WARNING("no large enough working area available, can't do block memory writes");
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- }
- }
-
- arm_algo.common_magic = ARM_COMMON_MAGIC;
- arm_algo.core_mode = ARM_MODE_SVC;
- arm_algo.core_state = ARM_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_OUT);
- init_reg_param(®_params[4], "r4", 32, PARAM_IN);
- init_reg_param(®_params[5], "r5", 32, PARAM_OUT);
-
- while (count > 0) {
- uint32_t thisrun_count = (count > (buffer_size / 8)) ? (buffer_size / 8) : count;
-
- target_write_buffer(target, source->address, thisrun_count * 8, 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, str7x_get_flash_adr(bank, FLASH_CR0));
- buf_set_u32(reg_params[3].value, 0, 32, thisrun_count);
- buf_set_u32(reg_params[5].value, 0, 32, str7x_info->busy_bits);
-
- retval = target_run_algorithm(target, 0, NULL, 6, reg_params,
- write_algorithm->address,
- write_algorithm->address + (sizeof(str7x_flash_write_code) - 4),
- 10000, &arm_algo);
- if (retval != ERROR_OK)
- break;
-
- if (buf_get_u32(reg_params[4].value, 0, 32) != 0x00) {
- retval = str7x_result(bank);
- break;
- }
-
- buffer += thisrun_count * 8;
- address += thisrun_count * 8;
- count -= thisrun_count;
- }
-
- target_free_working_area(target, source);
- target_free_working_area(target, write_algorithm);
-
- destroy_reg_param(®_params[0]);
- destroy_reg_param(®_params[1]);
- destroy_reg_param(®_params[2]);
- destroy_reg_param(®_params[3]);
- destroy_reg_param(®_params[4]);
- destroy_reg_param(®_params[5]);
-
- return retval;
- }
-
- static int str7x_write(struct flash_bank *bank, const uint8_t *buffer,
- uint32_t offset, uint32_t count)
- {
- struct target *target = bank->target;
- uint32_t dwords_remaining = (count / 8);
- uint32_t bytes_remaining = (count & 0x00000007);
- uint32_t address = bank->base + offset;
- uint32_t bytes_written = 0;
- uint32_t cmd;
- int retval;
- uint32_t check_address = offset;
- int i;
-
- if (bank->target->state != TARGET_HALTED) {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if (offset & 0x7) {
- LOG_WARNING("offset 0x%" PRIx32 " breaks required 8-byte alignment", offset);
- return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
- }
-
- for (i = 0; i < bank->num_sectors; i++) {
- uint32_t sec_start = bank->sectors[i].offset;
- uint32_t 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;
-
- /* clear FLASH_ER register */
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_ER), 0x0);
-
- /* multiple dwords (8-byte) to be programmed? */
- if (dwords_remaining > 0) {
- /* try using a block write */
- retval = str7x_write_block(bank, buffer, offset, dwords_remaining);
- if (retval != ERROR_OK) {
- if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
- /* if block write failed (no sufficient working area),
- * we use normal (slow) single dword accesses */
- LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
- } else {
- return retval;
- }
- } else {
- buffer += dwords_remaining * 8;
- address += dwords_remaining * 8;
- dwords_remaining = 0;
- }
- }
-
- while (dwords_remaining > 0) {
- /* command */
- cmd = FLASH_DWPG;
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
-
- /* address */
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_AR), address);
-
- /* data word 1 */
- target_write_memory(target, str7x_get_flash_adr(bank, FLASH_DR0),
- 4, 1, buffer + bytes_written);
- bytes_written += 4;
-
- /* data word 2 */
- target_write_memory(target, str7x_get_flash_adr(bank, FLASH_DR1),
- 4, 1, buffer + bytes_written);
- bytes_written += 4;
-
- /* start programming cycle */
- cmd = FLASH_DWPG | FLASH_WMS;
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
-
- int err;
- err = str7x_waitbusy(bank);
- if (err != ERROR_OK)
- return err;
-
- err = str7x_result(bank);
- if (err != ERROR_OK)
- return err;
-
- dwords_remaining--;
- address += 8;
- }
-
- if (bytes_remaining) {
- uint8_t last_dword[8] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
-
- /* copy the last remaining bytes into the write buffer */
- memcpy(last_dword, buffer+bytes_written, bytes_remaining);
-
- /* command */
- cmd = FLASH_DWPG;
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
-
- /* address */
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_AR), address);
-
- /* data word 1 */
- target_write_memory(target, str7x_get_flash_adr(bank, FLASH_DR0),
- 4, 1, last_dword);
-
- /* data word 2 */
- target_write_memory(target, str7x_get_flash_adr(bank, FLASH_DR1),
- 4, 1, last_dword + 4);
-
- /* start programming cycle */
- cmd = FLASH_DWPG | FLASH_WMS;
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), cmd);
-
- int err;
- err = str7x_waitbusy(bank);
- if (err != ERROR_OK)
- return err;
-
- err = str7x_result(bank);
- if (err != ERROR_OK)
- return err;
- }
-
- return ERROR_OK;
- }
-
- static int str7x_probe(struct flash_bank *bank)
- {
- return ERROR_OK;
- }
-
- #if 0
- COMMAND_HANDLER(str7x_handle_part_id_command)
- {
- return ERROR_OK;
- }
- #endif
-
- static int get_str7x_info(struct flash_bank *bank, char *buf, int buf_size)
- {
- /* Setting the write protection on a sector is a permanent change but it
- * can be disabled temporarily. FLASH_NVWPAR reflects the permanent
- * protection state of the sectors, not the temporary.
- */
- snprintf(buf, buf_size, "STR7x flash protection info is only valid after a power cycle, "
- "clearing the protection is only temporary and may not be reflected in the current "
- "info returned.");
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(str7x_handle_disable_jtag_command)
- {
- struct target *target = NULL;
- struct str7x_flash_bank *str7x_info = NULL;
-
- uint32_t flash_cmd;
- uint16_t ProtectionLevel = 0;
- uint16_t ProtectionRegs;
-
- if (CMD_ARGC < 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- struct flash_bank *bank;
- int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
- if (ERROR_OK != retval)
- return retval;
-
- str7x_info = bank->driver_priv;
-
- target = bank->target;
-
- if (target->state != TARGET_HALTED) {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- /* first we get protection status */
- uint32_t reg;
- target_read_u32(target, str7x_get_flash_adr(bank, FLASH_NVAPR0), ®);
-
- if (!(reg & str7x_info->disable_bit))
- ProtectionLevel = 1;
-
- target_read_u32(target, str7x_get_flash_adr(bank, FLASH_NVAPR1), ®);
- ProtectionRegs = ~(reg >> 16);
-
- while (((ProtectionRegs) != 0) && (ProtectionLevel < 16)) {
- ProtectionRegs >>= 1;
- ProtectionLevel++;
- }
-
- if (ProtectionLevel == 0) {
- flash_cmd = FLASH_SPR;
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), flash_cmd);
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_AR), 0x4010DFB8);
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_DR0), 0xFFFFFFFD);
- flash_cmd = FLASH_SPR | FLASH_WMS;
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), flash_cmd);
- } else {
- flash_cmd = FLASH_SPR;
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), flash_cmd);
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_AR), 0x4010DFBC);
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_DR0),
- ~(1 << (15 + ProtectionLevel)));
- flash_cmd = FLASH_SPR | FLASH_WMS;
- target_write_u32(target, str7x_get_flash_adr(bank, FLASH_CR0), flash_cmd);
- }
-
- return ERROR_OK;
- }
-
- static const struct command_registration str7x_exec_command_handlers[] = {
- {
- .name = "disable_jtag",
- .usage = "<bank>",
- .handler = str7x_handle_disable_jtag_command,
- .mode = COMMAND_EXEC,
- .help = "disable jtag access",
- },
- COMMAND_REGISTRATION_DONE
- };
-
- static const struct command_registration str7x_command_handlers[] = {
- {
- .name = "str7x",
- .mode = COMMAND_ANY,
- .help = "str7x flash command group",
- .usage = "",
- .chain = str7x_exec_command_handlers,
- },
- COMMAND_REGISTRATION_DONE
- };
-
- struct flash_driver str7x_flash = {
- .name = "str7x",
- .commands = str7x_command_handlers,
- .flash_bank_command = str7x_flash_bank_command,
- .erase = str7x_erase,
- .protect = str7x_protect,
- .write = str7x_write,
- .read = default_flash_read,
- .probe = str7x_probe,
- .auto_probe = str7x_probe,
- .erase_check = default_flash_blank_check,
- .protect_check = str7x_protect_check,
- .info = get_str7x_info,
- };
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