diff options
Diffstat (limited to 'src/flash/nor/stm32f1x.c')
| -rw-r--r-- | src/flash/nor/stm32f1x.c | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/src/flash/nor/stm32f1x.c b/src/flash/nor/stm32f1x.c index 9a3d459b..91f7f1ff 100644 --- a/src/flash/nor/stm32f1x.c +++ b/src/flash/nor/stm32f1x.c @@ -843,9 +843,35 @@ static int stm32x_get_device_id(struct flash_bank *bank, uint32_t *device_id) return retval; } -static int stm32x_probe(struct flash_bank *bank) +static int stm32x_get_flash_size(struct flash_bank *bank, uint16_t *flash_size_in_kb) { struct target *target = bank->target; + uint32_t cpuid, flash_size_reg; + + int retval = target_read_u32(target, 0xE000ED00, &cpuid); + if (retval != ERROR_OK) + return retval; + + if (((cpuid >> 4) & 0xFFF) == 0xC20) { + /* 0xC20 is M0 devices */ + flash_size_reg = 0x1FFFF7CC; + } else if (((cpuid >> 4) & 0xFFF) == 0xC23) { + /* 0xC23 is M3 devices */ + flash_size_reg = 0x1FFFF7E0; + } else { + LOG_ERROR("Cannot identify target as a stm32x"); + return ERROR_FAIL; + } + + retval = target_read_u16(target, flash_size_reg, flash_size_in_kb); + if (retval != ERROR_OK) + return retval; + + return retval; +} + +static int stm32x_probe(struct flash_bank *bank) +{ struct stm32x_flash_bank *stm32x_info = bank->driver_priv; int i; uint16_t flash_size_in_kb; @@ -853,7 +879,6 @@ static int stm32x_probe(struct flash_bank *bank) int page_size; uint32_t base_address = 0x08000000; - stm32x_info->probed = 0; stm32x_info->register_base = FLASH_REG_BASE_B0; @@ -865,7 +890,7 @@ static int stm32x_probe(struct flash_bank *bank) LOG_INFO("device id = 0x%08" PRIx32 "", device_id); /* get flash size from target. */ - retval = target_read_u16(target, 0x1FFFF7E0, &flash_size_in_kb); + retval = stm32x_get_flash_size(bank, &flash_size_in_kb); if (retval != ERROR_OK) { LOG_WARNING("failed reading flash size, default to max target family"); /* failed reading flash size, default to max target family */ |