static bool stm32f4_cmd_erase_mass(target *t)
{
const char spinner[] = "|/-\\";
int spinindex = 0;
gdb_out("Erasing flash... This may take a few seconds. ");
stm32f4_flash_unlock(t);
/* Flash mass erase start instruction */
target_mem_write32(t, FLASH_CR, FLASH_CR_MER);
target_mem_write32(t, FLASH_CR, FLASH_CR_STRT | FLASH_CR_MER);
/* Read FLASH_SR to poll for BSY bit */
while (target_mem_read32(t, FLASH_SR) & FLASH_SR_BSY) {
gdb_outf("\b%c", spinner[spinindex++ % 4]);
if(target_check_error(t)) {
gdb_out("\n");
return false;
}
}
gdb_out("\n");
/* Check for error */
uint16_t sr = target_mem_read32(t, FLASH_SR);
if ((sr & SR_ERROR_MASK) || !(sr & SR_EOP))
return false;
return true;
}
static int stm32f4_flash_erase(struct target_flash *f, uint32_t addr, size_t len)
{
target *t = f->t;
uint16_t sr;
uint8_t sector = ((struct stm32f4_flash *)f)->base_sector +
(addr - f->start)/f->blocksize;
stm32f4_flash_unlock(t);
while(len) {
uint32_t cr = FLASH_CR_EOPIE | FLASH_CR_ERRIE | FLASH_CR_SER |
(sector << 3);
/* Flash page erase instruction */
target_mem_write32(t, FLASH_CR, cr);
/* write address to FMA */
target_mem_write32(t, FLASH_CR, cr | FLASH_CR_STRT);
/* Read FLASH_SR to poll for BSY bit */
while(target_mem_read32(t, FLASH_SR) & FLASH_SR_BSY)
if(target_check_error(t))
return -1;
len -= f->blocksize;
sector++;
}
/* Check for error */
sr = target_mem_read32(t, FLASH_SR);
if(sr & SR_ERROR_MASK)
return -1;
return 0;
}
static int stm32f4_flash_erase(struct target_s *target, uint32_t addr, int len)
{
ADIv5_AP_t *ap = adiv5_target_ap(target);
uint16_t sr;
uint32_t cr;
uint32_t pagesize;
addr &= 0x07FFC000;
stm32f4_flash_unlock(ap);
while(len) {
if (addr < 0x10000) { /* Sector 0..3 */
cr = (addr >> 11);
pagesize = 0x4000;
} else if (addr < 0x20000) { /* Sector 4 */