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flash/nor/stm32l: unify waiting for busy flag functions 

Change-Id: I5e6daff8232bb4807dd13a1951fbf335529661d4
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/2491
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
__archive__
Paul Fertser 2015-01-23 12:40:58 +03:00 committed by Spencer Oliver
parent cd72808889
commit f34098953a
1 changed files with 12 additions and 40 deletions
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52
src/flash/nor/stm32lx.c
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@ -104,7 +104,7 @@ static int stm32lx_enable_write_half_page(struct flash_bank *bank);
static int stm32lx_erase_sector(struct flash_bank *bank, int sector);
static int stm32lx_wait_until_bsy_clear(struct flash_bank *bank);
static int stm32lx_mass_erase(struct flash_bank *bank);
static int stm32lx_wait_status_busy(struct flash_bank *bank, int timeout);
static int stm32lx_wait_until_bsy_clear_timeout(struct flash_bank *bank, int timeout);
struct stm32lx_rev {
uint16_t rev;
@ -1105,38 +1105,7 @@ static inline int stm32lx_get_flash_status(struct flash_bank *bank, uint32_t *st
static int stm32lx_wait_until_bsy_clear(struct flash_bank *bank)
{
struct target *target = bank->target;
struct stm32lx_flash_bank *stm32lx_info = bank->driver_priv;
uint32_t status;
int retval = ERROR_OK;
int timeout = 100;
/* wait for busy to clear */
for (;;) {
retval = target_read_u32(target, stm32lx_info->flash_base + FLASH_SR, &status);
if (retval != ERROR_OK)
return retval;
if ((status & FLASH_SR__BSY) == 0)
break;
if (timeout-- <= 0) {
LOG_ERROR("timed out waiting for flash");
return ERROR_FAIL;
}
alive_sleep(1);
}
if (status & FLASH_SR__WRPERR) {
LOG_ERROR("access denied / write protected");
retval = ERROR_FAIL;
}
if (status & FLASH_SR__PGAERR) {
LOG_ERROR("invalid program address");
retval = ERROR_FAIL;
}
return retval;
return stm32lx_wait_until_bsy_clear_timeout(bank, 100);
}
static int stm32lx_unlock_options_bytes(struct flash_bank *bank)
@ -1182,17 +1151,15 @@ static int stm32lx_unlock_options_bytes(struct flash_bank *bank)
return ERROR_OK;
}
static int stm32lx_wait_status_busy(struct flash_bank *bank, int timeout)
static int stm32lx_wait_until_bsy_clear_timeout(struct flash_bank *bank, int timeout)
{
struct target *target = bank->target;
uint32_t status;
int retval = ERROR_OK;
struct stm32lx_flash_bank *stm32lx_info = bank->driver_priv;
uint32_t status;
int retval = ERROR_OK;
/* wait for busy to clear */
for (;;) {
retval = stm32lx_get_flash_status(bank, &status);
if (retval != ERROR_OK)
return retval;
@ -1209,7 +1176,12 @@ static int stm32lx_wait_status_busy(struct flash_bank *bank, int timeout)
}
if (status & FLASH_SR__WRPERR) {
LOG_ERROR("stm32lx device protected");
LOG_ERROR("access denied / write protected");
retval = ERROR_FAIL;
}
if (status & FLASH_SR__PGAERR) {
LOG_ERROR("invalid program address");
retval = ERROR_FAIL;
}
@ -1279,7 +1251,7 @@ static int stm32lx_mass_erase(struct flash_bank *bank)
if (retval != ERROR_OK)
return retval;
retval = stm32lx_wait_status_busy(bank, 30000);
retval = stm32lx_wait_until_bsy_clear_timeout(bank, 30000);
if (retval != ERROR_OK)
return retval;