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-rw-r--r--src/flash/nor/stm32x.c34
1 files changed, 25 insertions, 9 deletions
diff --git a/src/flash/nor/stm32x.c b/src/flash/nor/stm32x.c
index ae4f02b5..63a137c1 100644
--- a/src/flash/nor/stm32x.c
+++ b/src/flash/nor/stm32x.c
@@ -115,7 +115,9 @@ static int stm32x_read_options(struct flash_bank *bank)
stm32x_info = bank->driver_priv;
/* read current option bytes */
- target_read_u32(target, STM32_FLASH_OBR, &optiondata);
+ int retval = target_read_u32(target, STM32_FLASH_OBR, &optiondata);
+ if (retval != ERROR_OK)
+ return retval;
stm32x_info->option_bytes.user_options = (uint16_t)0xFFF8 | ((optiondata >> 2) & 0x07);
stm32x_info->option_bytes.RDP = (optiondata & (1 << OPT_READOUT)) ? 0xFFFF : 0x5AA5;
@@ -124,7 +126,9 @@ static int stm32x_read_options(struct flash_bank *bank)
LOG_INFO("Device Security Bit Set");
/* each bit refers to a 4bank protection */
- target_read_u32(target, STM32_FLASH_WRPR, &optiondata);
+ retval = target_read_u32(target, STM32_FLASH_WRPR, &optiondata);
+ if (retval != ERROR_OK)
+ return retval;
stm32x_info->option_bytes.protection[0] = (uint16_t)optiondata;
stm32x_info->option_bytes.protection[1] = (uint16_t)(optiondata >> 8);
@@ -287,7 +291,9 @@ static int stm32x_protect_check(struct flash_bank *bank)
/* 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);
+ int retval = target_read_u32(target, STM32_FLASH_WRPR, &protection);
+ if (retval != ERROR_OK)
+ return retval;
/* medium density - each protection bit is for 4 * 1K pages
* high density - each protection bit is for 2 * 2K pages */
@@ -418,7 +424,9 @@ static int stm32x_protect(struct flash_bank *bank, int set, int first, int last)
/* 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);
+ int retval = target_read_u32(target, STM32_FLASH_WRPR, &protection);
+ if (retval != ERROR_OK)
+ return retval;
prot_reg[0] = (uint16_t)protection;
prot_reg[1] = (uint16_t)(protection >> 8);
@@ -713,12 +721,16 @@ static int stm32x_probe(struct flash_bank *bank)
stm32x_info->probed = 0;
/* read stm32 device id register */
- target_read_u32(target, 0xE0042000, &device_id);
+ int retval = target_read_u32(target, 0xE0042000, &device_id);
+ if (retval != ERROR_OK)
+ return retval;
LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
- /* get flash size from target */
- if (target_read_u16(target, 0x1FFFF7E0, &num_pages) != ERROR_OK)
+ /* get flash size from target. */
+ retval = target_read_u16(target, 0x1FFFF7E0, &num_pages);
+ if (retval != ERROR_OK)
{
+ LOG_WARNING("failed reading flash size, default to max target family");
/* failed reading flash size, default to max target family */
num_pages = 0xffff;
}
@@ -855,7 +867,9 @@ static int get_stm32x_info(struct flash_bank *bank, char *buf, int buf_size)
int printed;
/* read stm32 device id register */
- target_read_u32(target, 0xE0042000, &device_id);
+ int retval = target_read_u32(target, 0xE0042000, &device_id);
+ if (retval != ERROR_OK)
+ return retval;
if ((device_id & 0x7ff) == 0x410)
{
@@ -1093,7 +1107,9 @@ COMMAND_HANDLER(stm32x_handle_options_read_command)
return ERROR_TARGET_NOT_HALTED;
}
- target_read_u32(target, STM32_FLASH_OBR, &optionbyte);
+ retval = target_read_u32(target, STM32_FLASH_OBR, &optionbyte);
+ if (retval != ERROR_OK)
+ return retval;
command_print(CMD_CTX, "Option Byte: 0x%" PRIx32 "", optionbyte);
if (buf_get_u32((uint8_t*)&optionbyte, OPT_ERROR, 1))