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flash/nor/stm32f1x: Ability to change user option bytes. 

Adds ability to change the user data in STM32F1x/STM32F3x MCU's option byte.
Since OpenOCD prints the content of user data in option byte registers, it
is seems logical to also provide a way how to change this data.

Change-Id: Ie6cb756b4f11b5c6dabd34bc89434a358eb758ff
Signed-off-by: Jan Vojtech <honza.vojtech@gmail.com>
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/4663
Tested-by: jenkins
Reviewed-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
This commit is contained in:
Jan Vojtech 2018-09-04 11:50:09 +02:00 committed by Matthias Welwarsky
parent 7a3eec2b4d
commit 9f576d3f48
2 changed files with 14 additions and 3 deletions
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3
doc/openocd.texi
View File

@ -6607,9 +6607,10 @@ or upon executing the @command{stm32f1x options_load} command.
The @var{num} parameter is a value shown by @command{flash banks}.
@end deffn
@deffn Command {stm32f1x options_write} num (@option{SWWDG}|@option{HWWDG}) (@option{RSTSTNDBY}|@option{NORSTSTNDBY}) (@option{RSTSTOP}|@option{NORSTSTOP})
@deffn Command {stm32f1x options_write} num (@option{SWWDG}|@option{HWWDG}) (@option{RSTSTNDBY}|@option{NORSTSTNDBY}) (@option{RSTSTOP}|@option{NORSTSTOP}) (@option{USEROPT} user_data)
Writes the stm32 option byte with the specified values.
The @var{num} parameter is a value shown by @command{flash banks}.
The @var{user_data} parameter is content of higher 16 bits of the option byte register (Data0 and Data1 as one 16bit number).
@end deffn
@deffn Command {stm32f1x options_load} num

14
src/flash/nor/stm32f1x.c
View File

@ -1313,7 +1313,8 @@ COMMAND_HANDLER(stm32x_handle_options_write_command)
{
struct target *target = NULL;
struct stm32x_flash_bank *stm32x_info = NULL;
uint16_t optionbyte;
uint8_t optionbyte;
uint16_t useropt;
if (CMD_ARGC < 2)
return ERROR_COMMAND_SYNTAX_ERROR;
@ -1342,6 +1343,7 @@ COMMAND_HANDLER(stm32x_handle_options_write_command)
/* start with current options */
optionbyte = stm32x_info->option_bytes.user;
useropt = stm32x_info->option_bytes.data;
/* skip over flash bank */
CMD_ARGC--;
@ -1360,6 +1362,13 @@ COMMAND_HANDLER(stm32x_handle_options_write_command)
optionbyte |= (1 << 2);
else if (strcmp("RSTSTNDBY", CMD_ARGV[0]) == 0)
optionbyte &= ~(1 << 2);
else if (strcmp("USEROPT", CMD_ARGV[0]) == 0) {
if (CMD_ARGC < 2)
return ERROR_COMMAND_SYNTAX_ERROR;
COMMAND_PARSE_NUMBER(u16, CMD_ARGV[1], useropt);
CMD_ARGC--;
CMD_ARGV++;
}
else if (stm32x_info->has_dual_banks) {
if (strcmp("BOOT0", CMD_ARGV[0]) == 0)
optionbyte |= (1 << 3);
@ -1379,6 +1388,7 @@ COMMAND_HANDLER(stm32x_handle_options_write_command)
}
stm32x_info->option_bytes.user = optionbyte;
stm32x_info->option_bytes.data = useropt;
if (stm32x_write_options(bank) != ERROR_OK) {
command_print(CMD_CTX, "stm32x failed to write options");
@ -1536,7 +1546,7 @@ static const struct command_registration stm32x_exec_command_handlers[] = {
.mode = COMMAND_EXEC,
.usage = "bank_id ('SWWDG'|'HWWDG') "
"('RSTSTNDBY'|'NORSTSTNDBY') "
"('RSTSTOP'|'NORSTSTOP')",
"('RSTSTOP'|'NORSTSTOP') ('USEROPT' user_data)",
.help = "Replace bits in device option bytes.",
},
{