diff options
| author | Louis Yung-Chieh Lo <yjlou@chromium.org> | 2012-07-17 16:52:48 +0800 |
|---|---|---|
| committer | Gerrit <chrome-bot@google.com> | 2012-07-17 20:55:41 -0700 |
| commit | 228259479aac39563eb4906d61dc5faa76fb35f1 (patch) | |
| tree | 203e2c58480894cb0119eb8676bdf7dbb4c665dc | |
| parent | 8978c6abacebd667299114ad311baaa9329ec51c (diff) | |
| download | chrome-ec-228259479aac39563eb4906d61dc5faa76fb35f1.tar.gz | |
stm32mon supports read unprotection.
Details please refer to AN3155 document.
BUG=None
TEST=run on real machine.
% stm32mon -U
% stm32mon -u
% stm32mon -w new_image
Change-Id: I070e18a7cb112afe0ab0d0f0bd06cecc4eefb37e
Signed-off-by: Louis Yung-Chieh Lo <yjlou@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/27630
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Yung-Chieh Lo <yjlou%chromium.org@gtempaccount.com>
Commit-Ready: Yung-Chieh Lo <yjlou%chromium.org@gtempaccount.com>
| -rw-r--r-- | util/stm32mon.c | 41 |
1 files changed, 36 insertions, 5 deletions
diff --git a/util/stm32mon.c b/util/stm32mon.c index dd66040bcc..22d01d4306 100644 --- a/util/stm32mon.c +++ b/util/stm32mon.c @@ -70,9 +70,10 @@ const char *output_filename; /* optional command flags */ enum { - FLAG_UNPROTECT = 0x01, - FLAG_ERASE = 0x02, - FLAG_GO = 0x04, + FLAG_UNPROTECT = 0x01, + FLAG_ERASE = 0x02, + FLAG_GO = 0x04, + FLAG_READ_UNPROTECT = 0x08, }; typedef struct { @@ -458,6 +459,30 @@ int command_erase(int fd, uint8_t count, uint8_t start) return res; } +int command_read_unprotect(int fd) +{ + int res; + + res = send_command(fd, CMD_RU, NULL, 0, NULL, 0); + if (res < 0) + return -EIO; + + /* Wait for the ACK */ + if (wait_for_ack(fd) < 0) { + fprintf(stderr, "Failed to get read-protect ACK\n"); + return -EINVAL; + } + printf("Flash read unprotected.\n"); + + /* This commands triggers a reset */ + if (init_monitor(fd) < 0) { + fprintf(stderr, "Cannot recover after RP reset\n"); + return -EIO; + } + + return 0; +} + int command_write_unprotect(int fd) { int res; @@ -590,12 +615,13 @@ static const struct option longopts[] = { void display_usage(char *program) { - fprintf(stderr, "Usage: %s [-d <tty>] [-b <baudrate>] [-u] [-e]" + fprintf(stderr, "Usage: %s [-d <tty>] [-b <baudrate>] [-u] [-e] [-U]" " [-r <file>] [-w <file>] [-g]\n", program); fprintf(stderr, "--d[evice] <tty> : use <tty> as the serial port\n"); fprintf(stderr, "--b[audrate] <baudrate> : set serial port speed " "to <baudrate> bauds\n"); fprintf(stderr, "--u[nprotect] : remove flash write protect\n"); + fprintf(stderr, "--U[nprotect] : remove flash read protect\n"); fprintf(stderr, "--e[rase] : erase all the flash content\n"); fprintf(stderr, "--r[ead] <file> : read the flash content and " "write it into <file>\n"); @@ -633,7 +659,7 @@ int parse_parameters(int argc, char **argv) int opt, idx; int flags = 0; - while ((opt = getopt_long(argc, argv, "b:d:eghr:w:u?", + while ((opt = getopt_long(argc, argv, "b:d:eghr:w:uU?", longopts, &idx)) != -1) { switch (opt) { case 'b': @@ -661,6 +687,9 @@ int parse_parameters(int argc, char **argv) case 'u': flags |= FLAG_UNPROTECT; break; + case 'U': + flags |= FLAG_READ_UNPROTECT; + break; } } return flags; @@ -691,6 +720,8 @@ int main(int argc, char **argv) command_get_commands(ser); + if (flags & FLAG_READ_UNPROTECT) + command_read_unprotect(ser); if (flags & FLAG_UNPROTECT) command_write_unprotect(ser); |