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stm32g0: Switched to the unified mass erase command, breaking out the bank erase command and added progress dots to stop GDB timing out

This commit is contained in:
dragonmux 2022-07-11 21:58:22 -04:00 committed by Piotr Esden-Tempski
parent d82ad89715
commit 980a1f140c
1 changed files with 63 additions and 46 deletions
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109
src/target/stm32g0.c
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@ -158,23 +158,19 @@ struct stm32g0_priv_s {
static bool stm32g0_attach(target *t);
static void stm32g0_detach(target *t);
static int stm32g0_flash_erase(struct target_flash *f, target_addr addr,
size_t len);
static int stm32g0_flash_write(struct target_flash *f, target_addr dest,
const void *src, size_t len);
static int stm32g0_flash_erase(struct target_flash *f, target_addr addr, size_t len);
static int stm32g0_flash_write(struct target_flash *f, target_addr dest, const void *src, size_t len);
static bool stm32g0_mass_erase(target *t);
/* Custom commands */
static bool stm32g0_cmd_erase_mass(target *t, int argc, const char **argv);
static bool stm32g0_cmd_erase_bank(target *t, int argc, const char **argv);
static bool stm32g0_cmd_option(target *t, int argc, const char **argv);
static bool stm32g0_cmd_irreversible(target *t, int argc, const char **argv);
const struct command_s stm32g0_cmd_list[] = {
{ "erase_mass [1|2]", (cmd_handler)stm32g0_cmd_erase_mass,
"Erase entire flash memory or specified bank" },
{ "option", (cmd_handler)stm32g0_cmd_option,
"Manipulate option bytes" },
{ "irreversible", (cmd_handler)stm32g0_cmd_irreversible,
"Allow irreversible operations: (enable|disable)" },
{ "erase_bank 1|2", (cmd_handler)stm32g0_cmd_erase_bank, "Erase specified Flash bank" },
{ "option", (cmd_handler)stm32g0_cmd_option, "Manipulate option bytes" },
{ "irreversible", (cmd_handler)stm32g0_cmd_irreversible, "Allow irreversible operations: (enable|disable)" },
{ NULL, NULL, NULL }
};
@ -239,6 +235,7 @@ bool stm32g0_probe(target *t)
default:
return false;
}
t->mass_erase = stm32g0_mass_erase;
target_add_ram(t, RAM_START, ram_size);
/* Dual banks: contiguous in memory */
stm32g0_add_flash(t, FLASH_START, flash_size, FLASH_PAGE_SIZE);
@ -329,8 +326,7 @@ static void stm32g0_flash_lock(target *t)
* Flash erasure function.
* OTP case: this function clears any previous error and returns.
*/
static int stm32g0_flash_erase(struct target_flash *f, target_addr addr,
size_t len)
static int stm32g0_flash_erase(struct target_flash *f, target_addr addr, size_t len)
{
target *t = f->t;
target_addr end = addr + len - 1U;
@ -464,53 +460,74 @@ exit_cleanup:
return ret;
}
/*******************
* Custom commands
*******************/
static bool stm32g0_cmd_erase_mass(target *t, int argc, const char **argv)
static bool stm32g0_mass_erase(target *t)
{
uint32_t flash_cr = 0U;
bool ret = true;
if (argc == 2) {
switch (argv[1][0]) {
case '1':
flash_cr = (uint32_t)FLASH_CR_MER1 | FLASH_CR_STRT;
break;
case '2':
flash_cr = (uint32_t)FLASH_CR_MER2 | FLASH_CR_STRT;
break;
default:
goto exit_error;
break;
}
} else {
flash_cr = (uint32_t)(FLASH_CR_MER1 | FLASH_CR_MER2 |
FLASH_CR_STRT);
}
const uint32_t flash_cr = FLASH_CR_MER1 | FLASH_CR_MER2 | FLASH_CR_STRT;
stm32g0_flash_unlock(t);
target_mem_write32(t, FLASH_CR, flash_cr);
bool error = true;
platform_timeout timeout;
platform_timeout_set(&timeout, 500);
/* Read FLASH_SR to poll for BSY bits */
while (target_mem_read32(t, FLASH_SR) & FLASH_SR_BSY_MASK) {
if (target_check_error(t))
goto exit_error;
if ((error = target_check_error(t)))
goto exit_cleanup;
target_print_progress(&timeout);
}
/* Check for error */
uint16_t flash_sr = target_mem_read32(t, FLASH_SR);
if (flash_sr & FLASH_SR_ERROR_MASK)
goto exit_error;
goto exit_cleanup;
error = flash_sr & FLASH_SR_ERROR_MASK;
exit_error:
ret = false;
exit_cleanup:
stm32g0_flash_lock(t);
return ret;
return !error;
}
/*******************
* Custom commands
*******************/
static bool stm32g0_cmd_erase_bank(target *t, int argc, const char **argv)
{
uint32_t flash_cr = 0U;
if (argc == 2) {
switch (argv[1][0]) {
case '1':
flash_cr = FLASH_CR_MER1 | FLASH_CR_STRT;
break;
case '2':
flash_cr = FLASH_CR_MER2 | FLASH_CR_STRT;
break;
}
}
if (!flash_cr) {
tc_printf(t, "Must specify which bank to erase\n");
return false;
}
stm32g0_flash_unlock(t);
target_mem_write32(t, FLASH_CR, flash_cr);
bool error = true;
/* Read FLASH_SR to poll for BSY bits */
while (target_mem_read32(t, FLASH_SR) & FLASH_SR_BSY_MASK) {
if ((error = target_check_error(t)))
goto exit_cleanup;
}
/* Check for error */
uint16_t flash_sr = target_mem_read32(t, FLASH_SR);
error = flash_sr & FLASH_SR_ERROR_MASK;
exit_cleanup:
stm32g0_flash_lock(t);
return !error;
}
static void stm32g0_flash_option_unlock(target *t)