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flash: stm32f2x support write protection 

Change-Id: I42662681104bb06e28148229464ae144c4a54538
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/989
Tested-by: jenkins
This commit is contained in:
Spencer Oliver 2012-11-20 12:53:22 +00:00
parent 061f828a50
commit 86cc37183a
1 changed files with 49 additions and 0 deletions
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49
src/flash/nor/stm32f2x.c
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@ -377,6 +377,28 @@ static int stm32x_write_options(struct flash_bank *bank)
static int stm32x_protect_check(struct flash_bank *bank)
{
struct target *target = bank->target;
struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
if (target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
/* read write protection settings */
int retval = stm32x_read_options(bank);
if (retval != ERROR_OK) {
LOG_DEBUG("unable to read option bytes");
return retval;
}
for (int i = 0; i < bank->num_sectors; i++) {
if (stm32x_info->option_bytes.protection & (1 << i))
bank->sectors[i].is_protected = 0;
else
bank->sectors[i].is_protected = 1;
}
return ERROR_OK;
}
@ -428,6 +450,33 @@ static int stm32x_erase(struct flash_bank *bank, int first, int last)
static int stm32x_protect(struct flash_bank *bank, int set, int first, int last)
{
struct target *target = bank->target;
struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
if (target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
/* read protection settings */
int retval = stm32x_read_options(bank);
if (retval != ERROR_OK) {
LOG_DEBUG("unable to read option bytes");
return retval;
}
for (int i = first; i <= last; i++) {
if (set)
stm32x_info->option_bytes.protection &= ~(1 << i);
else
stm32x_info->option_bytes.protection |= (1 << i);
}
retval = stm32x_write_options(bank);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}