+++ /dev/null
-/***************************************************************************
- * Copyright (C) 2005 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * Copyright (C) 2008 by Spencer Oliver *
- * spen@spen-soft.co.uk *
- * *
- * 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 "stm32x.h"
-#include "armv7m.h"
-#include "binarybuffer.h"
-#include "algorithm.h"
-
-
-static int stm32x_mass_erase(struct flash_bank *bank);
-
-/* flash bank stm32x <base> <size> 0 0 <target#>
- */
-FLASH_BANK_COMMAND_HANDLER(stm32x_flash_bank_command)
-{
- struct stm32x_flash_bank *stm32x_info;
-
- if (CMD_ARGC < 6)
- {
- LOG_WARNING("incomplete flash_bank stm32x configuration");
- return ERROR_FLASH_BANK_INVALID;
- }
-
- stm32x_info = malloc(sizeof(struct stm32x_flash_bank));
- bank->driver_priv = stm32x_info;
-
- stm32x_info->write_algorithm = NULL;
- stm32x_info->probed = 0;
-
- return ERROR_OK;
-}
-
-static uint32_t stm32x_get_flash_status(struct flash_bank *bank)
-{
- struct target *target = bank->target;
- uint32_t status;
-
- target_read_u32(target, STM32_FLASH_SR, &status);
-
- return status;
-}
-
-static uint32_t stm32x_wait_status_busy(struct flash_bank *bank, int timeout)
-{
- struct target *target = bank->target;
- uint32_t status;
-
- /* wait for busy to clear */
- while (((status = stm32x_get_flash_status(bank)) & FLASH_BSY) && (timeout-- > 0))
- {
- LOG_DEBUG("status: 0x%" PRIx32 "", status);
- alive_sleep(1);
- }
- /* Clear but report errors */
- if (status & (FLASH_WRPRTERR | FLASH_PGERR))
- {
- target_write_u32(target, STM32_FLASH_SR, FLASH_WRPRTERR | FLASH_PGERR);
- }
- return status;
-}
-
-static int stm32x_read_options(struct flash_bank *bank)
-{
- uint32_t optiondata;
- struct stm32x_flash_bank *stm32x_info = NULL;
- struct target *target = bank->target;
-
- stm32x_info = bank->driver_priv;
-
- /* read current option bytes */
- target_read_u32(target, STM32_FLASH_OBR, &optiondata);
-
- stm32x_info->option_bytes.user_options = (uint16_t)0xFFF8 | ((optiondata >> 2) & 0x07);
- stm32x_info->option_bytes.RDP = (optiondata & (1 << OPT_READOUT)) ? 0xFFFF : 0x5AA5;
-
- if (optiondata & (1 << OPT_READOUT))
- LOG_INFO("Device Security Bit Set");
-
- /* each bit refers to a 4bank protection */
- target_read_u32(target, STM32_FLASH_WRPR, &optiondata);
-
- stm32x_info->option_bytes.protection[0] = (uint16_t)optiondata;
- stm32x_info->option_bytes.protection[1] = (uint16_t)(optiondata >> 8);
- stm32x_info->option_bytes.protection[2] = (uint16_t)(optiondata >> 16);
- stm32x_info->option_bytes.protection[3] = (uint16_t)(optiondata >> 24);
-
- return ERROR_OK;
-}
-
-static int stm32x_erase_options(struct flash_bank *bank)
-{
- struct stm32x_flash_bank *stm32x_info = NULL;
- struct target *target = bank->target;
- uint32_t status;
-
- stm32x_info = bank->driver_priv;
-
- /* read current options */
- stm32x_read_options(bank);
-
- /* unlock flash registers */
- target_write_u32(target, STM32_FLASH_KEYR, KEY1);
- target_write_u32(target, STM32_FLASH_KEYR, KEY2);
-
- /* unlock option flash registers */
- target_write_u32(target, STM32_FLASH_OPTKEYR, KEY1);
- target_write_u32(target, STM32_FLASH_OPTKEYR, KEY2);
-
- /* erase option bytes */
- target_write_u32(target, STM32_FLASH_CR, FLASH_OPTER | FLASH_OPTWRE);
- target_write_u32(target, STM32_FLASH_CR, FLASH_OPTER | FLASH_STRT | FLASH_OPTWRE);
-
- status = stm32x_wait_status_busy(bank, 10);
-
- if (status & FLASH_WRPRTERR)
- return ERROR_FLASH_OPERATION_FAILED;
- if (status & FLASH_PGERR)
- return ERROR_FLASH_OPERATION_FAILED;
-
- /* clear readout protection and complementary option bytes
- * this will also force a device unlock if set */
- stm32x_info->option_bytes.RDP = 0x5AA5;
-
- return ERROR_OK;
-}
-
-static int stm32x_write_options(struct flash_bank *bank)
-{
- struct stm32x_flash_bank *stm32x_info = NULL;
- struct target *target = bank->target;
- uint32_t status;
-
- stm32x_info = bank->driver_priv;
-
- /* unlock flash registers */
- target_write_u32(target, STM32_FLASH_KEYR, KEY1);
- target_write_u32(target, STM32_FLASH_KEYR, KEY2);
-
- /* unlock option flash registers */
- target_write_u32(target, STM32_FLASH_OPTKEYR, KEY1);
- target_write_u32(target, STM32_FLASH_OPTKEYR, KEY2);
-
- /* program option bytes */
- target_write_u32(target, STM32_FLASH_CR, FLASH_OPTPG | FLASH_OPTWRE);
-
- /* write user option byte */
- target_write_u16(target, STM32_OB_USER, stm32x_info->option_bytes.user_options);
-
- status = stm32x_wait_status_busy(bank, 10);
-
- if (status & FLASH_WRPRTERR)
- return ERROR_FLASH_OPERATION_FAILED;
- if (status & FLASH_PGERR)
- return ERROR_FLASH_OPERATION_FAILED;
-
- /* write protection byte 1 */
- target_write_u16(target, STM32_OB_WRP0, stm32x_info->option_bytes.protection[0]);
-
- status = stm32x_wait_status_busy(bank, 10);
-
- if (status & FLASH_WRPRTERR)
- return ERROR_FLASH_OPERATION_FAILED;
- if (status & FLASH_PGERR)
- return ERROR_FLASH_OPERATION_FAILED;
-
- /* write protection byte 2 */
- target_write_u16(target, STM32_OB_WRP1, stm32x_info->option_bytes.protection[1]);
-
- status = stm32x_wait_status_busy(bank, 10);
-
- if (status & FLASH_WRPRTERR)
- return ERROR_FLASH_OPERATION_FAILED;
- if (status & FLASH_PGERR)
- return ERROR_FLASH_OPERATION_FAILED;
-
- /* write protection byte 3 */
- target_write_u16(target, STM32_OB_WRP2, stm32x_info->option_bytes.protection[2]);
-
- status = stm32x_wait_status_busy(bank, 10);
-
- if (status & FLASH_WRPRTERR)
- return ERROR_FLASH_OPERATION_FAILED;
- if (status & FLASH_PGERR)
- return ERROR_FLASH_OPERATION_FAILED;
-
- /* write protection byte 4 */
- target_write_u16(target, STM32_OB_WRP3, stm32x_info->option_bytes.protection[3]);
-
- status = stm32x_wait_status_busy(bank, 10);
-
- if (status & FLASH_WRPRTERR)
- return ERROR_FLASH_OPERATION_FAILED;
- if (status & FLASH_PGERR)
- return ERROR_FLASH_OPERATION_FAILED;
-
- /* write readout protection bit */
- target_write_u16(target, STM32_OB_RDP, stm32x_info->option_bytes.RDP);
-
- status = stm32x_wait_status_busy(bank, 10);
-
- if (status & FLASH_WRPRTERR)
- return ERROR_FLASH_OPERATION_FAILED;
- if (status & FLASH_PGERR)
- return ERROR_FLASH_OPERATION_FAILED;
-
- target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK);
-
- return ERROR_OK;
-}
-
-static int stm32x_protect_check(struct flash_bank *bank)
-{
- struct target *target = bank->target;
- struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
-
- uint32_t protection;
- int i, s;
- int num_bits;
- int set;
-
- if (target->state != TARGET_HALTED)
- {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- /* medium density - each bit refers to a 4bank protection
- * high density - each bit refers to a 2bank protection */
- target_read_u32(target, STM32_FLASH_WRPR, &protection);
-
- /* medium density - each protection bit is for 4 * 1K pages
- * high density - each protection bit is for 2 * 2K pages */
- num_bits = (bank->num_sectors / stm32x_info->ppage_size);
-
- if (stm32x_info->ppage_size == 2)
- {
- /* high density flash/connectivity line protection */
-
- set = 1;
-
- if (protection & (1 << 31))
- set = 0;
-
- /* bit 31 controls sector 62 - 255 protection for high density
- * bit 31 controls sector 62 - 127 protection for connectivity line */
- for (s = 62; s < bank->num_sectors; s++)
- {
- bank->sectors[s].is_protected = set;
- }
-
- if (bank->num_sectors > 61)
- num_bits = 31;
-
- for (i = 0; i < num_bits; i++)
- {
- set = 1;
-
- if (protection & (1 << i))
- set = 0;
-
- for (s = 0; s < stm32x_info->ppage_size; s++)
- bank->sectors[(i * stm32x_info->ppage_size) + s].is_protected = set;
- }
- }
- else
- {
- /* low/medium density flash protection */
- for (i = 0; i < num_bits; i++)
- {
- set = 1;
-
- if (protection & (1 << i))
- set = 0;
-
- for (s = 0; s < stm32x_info->ppage_size; s++)
- bank->sectors[(i * stm32x_info->ppage_size) + s].is_protected = set;
- }
- }
-
- return ERROR_OK;
-}
-
-static int stm32x_erase(struct flash_bank *bank, int first, int last)
-{
- struct target *target = bank->target;
- int i;
- uint32_t status;
-
- if (bank->target->state != TARGET_HALTED)
- {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if ((first == 0) && (last == (bank->num_sectors - 1)))
- {
- return stm32x_mass_erase(bank);
- }
-
- /* unlock flash registers */
- target_write_u32(target, STM32_FLASH_KEYR, KEY1);
- target_write_u32(target, STM32_FLASH_KEYR, KEY2);
-
- for (i = first; i <= last; i++)
- {
- target_write_u32(target, STM32_FLASH_CR, FLASH_PER);
- target_write_u32(target, STM32_FLASH_AR, bank->base + bank->sectors[i].offset);
- target_write_u32(target, STM32_FLASH_CR, FLASH_PER | FLASH_STRT);
-
- status = stm32x_wait_status_busy(bank, 10);
-
- if (status & FLASH_WRPRTERR)
- return ERROR_FLASH_OPERATION_FAILED;
- if (status & FLASH_PGERR)
- return ERROR_FLASH_OPERATION_FAILED;
- bank->sectors[i].is_erased = 1;
- }
-
- target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK);
-
- return ERROR_OK;
-}
-
-static int stm32x_protect(struct flash_bank *bank, int set, int first, int last)
-{
- struct stm32x_flash_bank *stm32x_info = NULL;
- struct target *target = bank->target;
- uint16_t prot_reg[4] = {0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF};
- int i, reg, bit;
- int status;
- uint32_t protection;
-
- stm32x_info = bank->driver_priv;
-
- if (target->state != TARGET_HALTED)
- {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if ((first && (first % stm32x_info->ppage_size)) || ((last + 1) && (last + 1) % stm32x_info->ppage_size))
- {
- LOG_WARNING("Error: start and end sectors must be on a %d sector boundary", stm32x_info->ppage_size);
- return ERROR_FLASH_SECTOR_INVALID;
- }
-
- /* medium density - each bit refers to a 4bank protection
- * high density - each bit refers to a 2bank protection */
- target_read_u32(target, STM32_FLASH_WRPR, &protection);
-
- prot_reg[0] = (uint16_t)protection;
- prot_reg[1] = (uint16_t)(protection >> 8);
- prot_reg[2] = (uint16_t)(protection >> 16);
- prot_reg[3] = (uint16_t)(protection >> 24);
-
- if (stm32x_info->ppage_size == 2)
- {
- /* high density flash */
-
- /* bit 7 controls sector 62 - 255 protection */
- if (last > 61)
- {
- if (set)
- prot_reg[3] &= ~(1 << 7);
- else
- prot_reg[3] |= (1 << 7);
- }
-
- if (first > 61)
- first = 62;
- if (last > 61)
- last = 61;
-
- for (i = first; i <= last; i++)
- {
- reg = (i / stm32x_info->ppage_size) / 8;
- bit = (i / stm32x_info->ppage_size) - (reg * 8);
-
- if (set)
- prot_reg[reg] &= ~(1 << bit);
- else
- prot_reg[reg] |= (1 << bit);
- }
- }
- else
- {
- /* medium density flash */
- for (i = first; i <= last; i++)
- {
- reg = (i / stm32x_info->ppage_size) / 8;
- bit = (i / stm32x_info->ppage_size) - (reg * 8);
-
- if (set)
- prot_reg[reg] &= ~(1 << bit);
- else
- prot_reg[reg] |= (1 << bit);
- }
- }
-
- if ((status = stm32x_erase_options(bank)) != ERROR_OK)
- return status;
-
- stm32x_info->option_bytes.protection[0] = prot_reg[0];
- stm32x_info->option_bytes.protection[1] = prot_reg[1];
- stm32x_info->option_bytes.protection[2] = prot_reg[2];
- stm32x_info->option_bytes.protection[3] = prot_reg[3];
-
- return stm32x_write_options(bank);
-}
-
-static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
-{
- struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
- struct target *target = bank->target;
- uint32_t buffer_size = 16384;
- struct working_area *source;
- uint32_t address = bank->base + offset;
- struct reg_param reg_params[4];
- struct armv7m_algorithm armv7m_info;
- int retval = ERROR_OK;
-
- uint8_t stm32x_flash_write_code[] = {
- /* write: */
- 0xDF, 0xF8, 0x24, 0x40, /* ldr r4, STM32_FLASH_CR */
- 0x09, 0x4D, /* ldr r5, STM32_FLASH_SR */
- 0x4F, 0xF0, 0x01, 0x03, /* mov r3, #1 */
- 0x23, 0x60, /* str r3, [r4, #0] */
- 0x30, 0xF8, 0x02, 0x3B, /* ldrh r3, [r0], #2 */
- 0x21, 0xF8, 0x02, 0x3B, /* strh r3, [r1], #2 */
- /* busy: */
- 0x2B, 0x68, /* ldr r3, [r5, #0] */
- 0x13, 0xF0, 0x01, 0x0F, /* tst r3, #0x01 */
- 0xFB, 0xD0, /* beq busy */
- 0x13, 0xF0, 0x14, 0x0F, /* tst r3, #0x14 */
- 0x01, 0xD1, /* bne exit */
- 0x01, 0x3A, /* subs r2, r2, #1 */
- 0xED, 0xD1, /* bne write */
- /* exit: */
- 0xFE, 0xE7, /* b exit */
- 0x10, 0x20, 0x02, 0x40, /* STM32_FLASH_CR: .word 0x40022010 */
- 0x0C, 0x20, 0x02, 0x40 /* STM32_FLASH_SR: .word 0x4002200C */
- };
-
- /* flash write code */
- if (target_alloc_working_area(target, sizeof(stm32x_flash_write_code), &stm32x_info->write_algorithm) != ERROR_OK)
- {
- LOG_WARNING("no working area available, can't do block memory writes");
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- };
-
- if ((retval = target_write_buffer(target, stm32x_info->write_algorithm->address, sizeof(stm32x_flash_write_code), stm32x_flash_write_code)) != ERROR_OK)
- return retval;
-
- /* 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 (stm32x_info->write_algorithm)
- target_free_working_area(target, stm32x_info->write_algorithm);
-
- LOG_WARNING("no large enough working area available, can't do block memory writes");
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- }
- };
-
- armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
- armv7m_info.core_mode = ARMV7M_MODE_ANY;
-
- 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)
- {
- uint32_t thisrun_count = (count > (buffer_size / 2)) ? (buffer_size / 2) : count;
-
- if ((retval = target_write_buffer(target, source->address, thisrun_count * 2, buffer)) != ERROR_OK)
- break;
-
- 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_run_algorithm(target, 0, NULL, 4, reg_params, stm32x_info->write_algorithm->address, \
- stm32x_info->write_algorithm->address + (sizeof(stm32x_flash_write_code) - 10), 10000, &armv7m_info)) != ERROR_OK)
- {
- LOG_ERROR("error executing stm32x flash write algorithm");
- retval = ERROR_FLASH_OPERATION_FAILED;
- break;
- }
-
- if (buf_get_u32(reg_params[3].value, 0, 32) & FLASH_PGERR)
- {
- LOG_ERROR("flash memory not erased before writing");
- /* Clear but report errors */
- target_write_u32(target, STM32_FLASH_SR, FLASH_PGERR);
- retval = ERROR_FLASH_OPERATION_FAILED;
- break;
- }
-
- if (buf_get_u32(reg_params[3].value, 0, 32) & FLASH_WRPRTERR)
- {
- LOG_ERROR("flash memory write protected");
- /* Clear but report errors */
- target_write_u32(target, STM32_FLASH_SR, FLASH_WRPRTERR);
- retval = ERROR_FLASH_OPERATION_FAILED;
- break;
- }
-
- buffer += thisrun_count * 2;
- address += thisrun_count * 2;
- count -= thisrun_count;
- }
-
- target_free_working_area(target, source);
- target_free_working_area(target, stm32x_info->write_algorithm);
-
- destroy_reg_param(®_params[0]);
- destroy_reg_param(®_params[1]);
- destroy_reg_param(®_params[2]);
- destroy_reg_param(®_params[3]);
-
- return retval;
-}
-
-static int stm32x_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
-{
- struct target *target = bank->target;
- uint32_t words_remaining = (count / 2);
- uint32_t bytes_remaining = (count & 0x00000001);
- uint32_t address = bank->base + offset;
- uint32_t bytes_written = 0;
- uint8_t status;
- int retval;
-
- if (bank->target->state != TARGET_HALTED)
- {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if (offset & 0x1)
- {
- LOG_WARNING("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset);
- return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
- }
-
- /* unlock flash registers */
- target_write_u32(target, STM32_FLASH_KEYR, KEY1);
- target_write_u32(target, STM32_FLASH_KEYR, KEY2);
-
- /* multiple half words (2-byte) to be programmed? */
- if (words_remaining > 0)
- {
- /* try using a block write */
- if ((retval = stm32x_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 */
- LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
- }
- else if (retval == ERROR_FLASH_OPERATION_FAILED)
- {
- LOG_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)
- {
- uint16_t value;
- memcpy(&value, buffer + bytes_written, sizeof(uint16_t));
-
- target_write_u32(target, STM32_FLASH_CR, FLASH_PG);
- target_write_u16(target, address, value);
-
- status = stm32x_wait_status_busy(bank, 5);
-
- if (status & FLASH_WRPRTERR)
- {
- LOG_ERROR("flash memory not erased before writing");
- return ERROR_FLASH_OPERATION_FAILED;
- }
- if (status & FLASH_PGERR)
- {
- LOG_ERROR("flash memory write protected");
- return ERROR_FLASH_OPERATION_FAILED;
- }
-
- bytes_written += 2;
- words_remaining--;
- address += 2;
- }
-
- if (bytes_remaining)
- {
- uint16_t value = 0xffff;
- memcpy(&value, buffer + bytes_written, bytes_remaining);
-
- target_write_u32(target, STM32_FLASH_CR, FLASH_PG);
- target_write_u16(target, address, value);
-
- status = stm32x_wait_status_busy(bank, 5);
-
- if (status & FLASH_WRPRTERR)
- {
- LOG_ERROR("flash memory not erased before writing");
- return ERROR_FLASH_OPERATION_FAILED;
- }
- if (status & FLASH_PGERR)
- {
- LOG_ERROR("flash memory write protected");
- return ERROR_FLASH_OPERATION_FAILED;
- }
- }
-
- target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK);
-
- return ERROR_OK;
-}
-
-static int stm32x_probe(struct flash_bank *bank)
-{
- struct target *target = bank->target;
- struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
- int i;
- uint16_t num_pages;
- uint32_t device_id;
- int page_size;
-
- if (bank->target->state != TARGET_HALTED)
- {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- stm32x_info->probed = 0;
-
- /* read stm32 device id register */
- target_read_u32(target, 0xE0042000, &device_id);
- LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
-
- /* get flash size from target */
- if (target_read_u16(target, 0x1FFFF7E0, &num_pages) != ERROR_OK)
- {
- /* failed reading flash size, default to max target family */
- num_pages = 0xffff;
- }
-
- if ((device_id & 0x7ff) == 0x410)
- {
- /* medium density - we have 1k pages
- * 4 pages for a protection area */
- page_size = 1024;
- stm32x_info->ppage_size = 4;
-
- /* check for early silicon */
- if (num_pages == 0xffff)
- {
- /* number of sectors incorrect on revA */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 128k flash");
- num_pages = 128;
- }
- }
- else if ((device_id & 0x7ff) == 0x412)
- {
- /* low density - we have 1k pages
- * 4 pages for a protection area */
- page_size = 1024;
- stm32x_info->ppage_size = 4;
-
- /* check for early silicon */
- if (num_pages == 0xffff)
- {
- /* number of sectors incorrect on revA */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 32k flash");
- num_pages = 32;
- }
- }
- else if ((device_id & 0x7ff) == 0x414)
- {
- /* high density - we have 2k pages
- * 2 pages for a protection area */
- page_size = 2048;
- stm32x_info->ppage_size = 2;
-
- /* check for early silicon */
- if (num_pages == 0xffff)
- {
- /* number of sectors incorrect on revZ */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 512k flash");
- num_pages = 512;
- }
- }
- else if ((device_id & 0x7ff) == 0x418)
- {
- /* connectivity line density - we have 2k pages
- * 2 pages for a protection area */
- page_size = 2048;
- stm32x_info->ppage_size = 2;
-
- /* check for early silicon */
- if (num_pages == 0xffff)
- {
- /* number of sectors incorrect on revZ */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 256k flash");
- num_pages = 256;
- }
- }
- else
- {
- LOG_WARNING("Cannot identify target as a STM32 family.");
- return ERROR_FLASH_OPERATION_FAILED;
- }
-
- LOG_INFO("flash size = %dkbytes", num_pages);
-
- /* calculate numbers of pages */
- num_pages /= (page_size / 1024);
-
- bank->base = 0x08000000;
- bank->size = (num_pages * page_size);
- bank->num_sectors = num_pages;
- bank->sectors = malloc(sizeof(struct flash_sector) * num_pages);
-
- for (i = 0; i < num_pages; i++)
- {
- bank->sectors[i].offset = i * page_size;
- bank->sectors[i].size = page_size;
- bank->sectors[i].is_erased = -1;
- bank->sectors[i].is_protected = 1;
- }
-
- stm32x_info->probed = 1;
-
- return ERROR_OK;
-}
-
-static int stm32x_auto_probe(struct flash_bank *bank)
-{
- struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
- if (stm32x_info->probed)
- return ERROR_OK;
- return stm32x_probe(bank);
-}
-
-#if 0
-COMMAND_HANDLER(stm32x_handle_part_id_command)
-{
- return ERROR_OK;
-}
-#endif
-
-static int stm32x_info(struct flash_bank *bank, char *buf, int buf_size)
-{
- struct target *target = bank->target;
- uint32_t device_id;
- int printed;
-
- /* read stm32 device id register */
- target_read_u32(target, 0xE0042000, &device_id);
-
- if ((device_id & 0x7ff) == 0x410)
- {
- printed = snprintf(buf, buf_size, "stm32x (Medium Density) - Rev: ");
- buf += printed;
- buf_size -= printed;
-
- switch (device_id >> 16)
- {
- case 0x0000:
- snprintf(buf, buf_size, "A");
- break;
-
- case 0x2000:
- snprintf(buf, buf_size, "B");
- break;
-
- case 0x2001:
- snprintf(buf, buf_size, "Z");
- break;
-
- case 0x2003:
- snprintf(buf, buf_size, "Y");
- break;
-
- default:
- snprintf(buf, buf_size, "unknown");
- break;
- }
- }
- else if ((device_id & 0x7ff) == 0x412)
- {
- printed = snprintf(buf, buf_size, "stm32x (Low Density) - Rev: ");
- buf += printed;
- buf_size -= printed;
-
- switch (device_id >> 16)
- {
- case 0x1000:
- snprintf(buf, buf_size, "A");
- break;
-
- default:
- snprintf(buf, buf_size, "unknown");
- break;
- }
- }
- else if ((device_id & 0x7ff) == 0x414)
- {
- printed = snprintf(buf, buf_size, "stm32x (High Density) - Rev: ");
- buf += printed;
- buf_size -= printed;
-
- switch (device_id >> 16)
- {
- case 0x1000:
- snprintf(buf, buf_size, "A");
- break;
-
- case 0x1001:
- snprintf(buf, buf_size, "Z");
- break;
-
- default:
- snprintf(buf, buf_size, "unknown");
- break;
- }
- }
- else if ((device_id & 0x7ff) == 0x418)
- {
- printed = snprintf(buf, buf_size, "stm32x (Connectivity) - Rev: ");
- buf += printed;
- buf_size -= printed;
-
- switch (device_id >> 16)
- {
- case 0x1000:
- snprintf(buf, buf_size, "A");
- break;
-
- case 0x1001:
- snprintf(buf, buf_size, "Z");
- break;
-
- default:
- snprintf(buf, buf_size, "unknown");
- break;
- }
- }
- else
- {
- snprintf(buf, buf_size, "Cannot identify target as a stm32x\n");
- return ERROR_FLASH_OPERATION_FAILED;
- }
-
- return ERROR_OK;
-}
-
-COMMAND_HANDLER(stm32x_handle_lock_command)
-{
- struct target *target = NULL;
- struct stm32x_flash_bank *stm32x_info = NULL;
-
- if (CMD_ARGC < 1)
- {
- command_print(CMD_CTX, "stm32x lock <bank>");
- return ERROR_OK;
- }
-
- struct flash_bank *bank;
- int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
- if (ERROR_OK != retval)
- return retval;
-
- stm32x_info = bank->driver_priv;
-
- target = bank->target;
-
- if (target->state != TARGET_HALTED)
- {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if (stm32x_erase_options(bank) != ERROR_OK)
- {
- command_print(CMD_CTX, "stm32x failed to erase options");
- return ERROR_OK;
- }
-
- /* set readout protection */
- stm32x_info->option_bytes.RDP = 0;
-
- if (stm32x_write_options(bank) != ERROR_OK)
- {
- command_print(CMD_CTX, "stm32x failed to lock device");
- return ERROR_OK;
- }
-
- command_print(CMD_CTX, "stm32x locked");
-
- return ERROR_OK;
-}
-
-COMMAND_HANDLER(stm32x_handle_unlock_command)
-{
- struct target *target = NULL;
- struct stm32x_flash_bank *stm32x_info = NULL;
-
- if (CMD_ARGC < 1)
- {
- command_print(CMD_CTX, "stm32x unlock <bank>");
- return ERROR_OK;
- }
-
- struct flash_bank *bank;
- int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
- if (ERROR_OK != retval)
- return retval;
-
- stm32x_info = bank->driver_priv;
-
- target = bank->target;
-
- if (target->state != TARGET_HALTED)
- {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if (stm32x_erase_options(bank) != ERROR_OK)
- {
- command_print(CMD_CTX, "stm32x failed to unlock device");
- return ERROR_OK;
- }
-
- if (stm32x_write_options(bank) != ERROR_OK)
- {
- command_print(CMD_CTX, "stm32x failed to lock device");
- return ERROR_OK;
- }
-
- command_print(CMD_CTX, "stm32x unlocked");
-
- return ERROR_OK;
-}
-
-COMMAND_HANDLER(stm32x_handle_options_read_command)
-{
- uint32_t optionbyte;
- struct target *target = NULL;
- struct stm32x_flash_bank *stm32x_info = NULL;
-
- if (CMD_ARGC < 1)
- {
- command_print(CMD_CTX, "stm32x options_read <bank>");
- return ERROR_OK;
- }
-
- struct flash_bank *bank;
- int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
- if (ERROR_OK != retval)
- return retval;
-
- stm32x_info = bank->driver_priv;
-
- target = bank->target;
-
- if (target->state != TARGET_HALTED)
- {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- target_read_u32(target, STM32_FLASH_OBR, &optionbyte);
- command_print(CMD_CTX, "Option Byte: 0x%" PRIx32 "", optionbyte);
-
- if (buf_get_u32((uint8_t*)&optionbyte, OPT_ERROR, 1))
- command_print(CMD_CTX, "Option Byte Complement Error");
-
- if (buf_get_u32((uint8_t*)&optionbyte, OPT_READOUT, 1))
- command_print(CMD_CTX, "Readout Protection On");
- else
- command_print(CMD_CTX, "Readout Protection Off");
-
- if (buf_get_u32((uint8_t*)&optionbyte, OPT_RDWDGSW, 1))
- command_print(CMD_CTX, "Software Watchdog");
- else
- command_print(CMD_CTX, "Hardware Watchdog");
-
- if (buf_get_u32((uint8_t*)&optionbyte, OPT_RDRSTSTOP, 1))
- command_print(CMD_CTX, "Stop: No reset generated");
- else
- command_print(CMD_CTX, "Stop: Reset generated");
-
- if (buf_get_u32((uint8_t*)&optionbyte, OPT_RDRSTSTDBY, 1))
- command_print(CMD_CTX, "Standby: No reset generated");
- else
- command_print(CMD_CTX, "Standby: Reset generated");
-
- return ERROR_OK;
-}
-
-COMMAND_HANDLER(stm32x_handle_options_write_command)
-{
- struct target *target = NULL;
- struct stm32x_flash_bank *stm32x_info = NULL;
- uint16_t optionbyte = 0xF8;
-
- if (CMD_ARGC < 4)
- {
- command_print(CMD_CTX, "stm32x options_write <bank> <SWWDG | HWWDG> <RSTSTNDBY | NORSTSTNDBY> <RSTSTOP | NORSTSTOP>");
- return ERROR_OK;
- }
-
- struct flash_bank *bank;
- int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
- if (ERROR_OK != retval)
- return retval;
-
- stm32x_info = bank->driver_priv;
-
- target = bank->target;
-
- if (target->state != TARGET_HALTED)
- {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if (strcmp(CMD_ARGV[1], "SWWDG") == 0)
- {
- optionbyte |= (1 << 0);
- }
- else
- {
- optionbyte &= ~(1 << 0);
- }
-
- if (strcmp(CMD_ARGV[2], "NORSTSTNDBY") == 0)
- {
- optionbyte |= (1 << 1);
- }
- else
- {
- optionbyte &= ~(1 << 1);
- }
-
- if (strcmp(CMD_ARGV[3], "NORSTSTOP") == 0)
- {
- optionbyte |= (1 << 2);
- }
- else
- {
- optionbyte &= ~(1 << 2);
- }
-
- if (stm32x_erase_options(bank) != ERROR_OK)
- {
- command_print(CMD_CTX, "stm32x failed to erase options");
- return ERROR_OK;
- }
-
- stm32x_info->option_bytes.user_options = optionbyte;
-
- if (stm32x_write_options(bank) != ERROR_OK)
- {
- command_print(CMD_CTX, "stm32x failed to write options");
- return ERROR_OK;
- }
-
- command_print(CMD_CTX, "stm32x write options complete");
-
- return ERROR_OK;
-}
-
-static int stm32x_mass_erase(struct flash_bank *bank)
-{
- struct target *target = bank->target;
- uint32_t status;
-
- if (target->state != TARGET_HALTED)
- {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
- /* unlock option flash registers */
- target_write_u32(target, STM32_FLASH_KEYR, KEY1);
- target_write_u32(target, STM32_FLASH_KEYR, KEY2);
-
- /* mass erase flash memory */
- target_write_u32(target, STM32_FLASH_CR, FLASH_MER);
- target_write_u32(target, STM32_FLASH_CR, FLASH_MER | FLASH_STRT);
-
- status = stm32x_wait_status_busy(bank, 10);
-
- target_write_u32(target, STM32_FLASH_CR, FLASH_LOCK);
-
- if (status & FLASH_WRPRTERR)
- {
- LOG_ERROR("stm32x device protected");
- return ERROR_OK;
- }
-
- if (status & FLASH_PGERR)
- {
- LOG_ERROR("stm32x device programming failed");
- return ERROR_OK;
- }
-
- return ERROR_OK;
-}
-
-COMMAND_HANDLER(stm32x_handle_mass_erase_command)
-{
- int i;
-
- if (CMD_ARGC < 1)
- {
- command_print(CMD_CTX, "stm32x mass_erase <bank>");
- return ERROR_OK;
- }
-
- struct flash_bank *bank;
- int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
- if (ERROR_OK != retval)
- return retval;
-
- if (stm32x_mass_erase(bank) == ERROR_OK)
- {
- /* set all sectors as erased */
- for (i = 0; i < bank->num_sectors; i++)
- {
- bank->sectors[i].is_erased = 1;
- }
-
- command_print(CMD_CTX, "stm32x mass erase complete");
- }
- else
- {
- command_print(CMD_CTX, "stm32x mass erase failed");
- }
-
- return ERROR_OK;
-}
-
-static const struct command_registration stm32x_exec_command_handlers[] = {
- {
- .name = "lock",
- .handler = &stm32x_handle_lock_command,
- .mode = COMMAND_EXEC,
- .help = "lock device",
- },
- {
- .name = "unlock",
- .handler = &stm32x_handle_unlock_command,
- .mode = COMMAND_EXEC,
- .help = "unlock protected device",
- },
- {
- .name = "mass_erase",
- .handler = &stm32x_handle_mass_erase_command,
- .mode = COMMAND_EXEC,
- .help = "mass erase device",
- },
- {
- .name = "options_read",
- .handler = &stm32x_handle_options_read_command,
- .mode = COMMAND_EXEC,
- .help = "read device option bytes",
- },
- {
- .name = "options_write",
- .handler = &stm32x_handle_options_write_command,
- .mode = COMMAND_EXEC,
- .help = "write device option bytes",
- },
- COMMAND_REGISTRATION_DONE
-};
-static const struct command_registration stm32x_command_handlers[] = {
- {
- .name = "stm32x",
- .mode = COMMAND_ANY,
- .help = "stm32x flash command group",
- .chain = stm32x_exec_command_handlers,
- },
- COMMAND_REGISTRATION_DONE
-};
-
-struct flash_driver stm32x_flash = {
- .name = "stm32x",
- .commands = stm32x_command_handlers,
- .flash_bank_command = &stm32x_flash_bank_command,
- .erase = &stm32x_erase,
- .protect = &stm32x_protect,
- .write = &stm32x_write,
- .probe = &stm32x_probe,
- .auto_probe = &stm32x_auto_probe,
- .erase_check = &default_flash_mem_blank_check,
- .protect_check = &stm32x_protect_check,
- .info = &stm32x_info,
- };
Code Review / openocd.git / blobdiff