diff options
| author | Vincent Palatin <vpalatin@chromium.org> | 2017-12-20 10:15:39 +0100 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-01-10 15:44:28 -0800 |
| commit | 4cb76d6c526da009808579b05f8cb7c409ce2ead (patch) | |
| tree | 8671b50a29aec7030f6d7447fd2740dff46a4569 /util | |
| parent | e3323bee6966fbde19f445a6de449b17efbfd06b (diff) | |
| download | chrome-ec-4cb76d6c526da009808579b05f8cb7c409ce2ead.tar.gz | |
stm32mon: do not write trailing empty space
Add a tweak to get faster flashing:
skip writing the empty trailing space at the end of the firmware image.
On the STM32H7x3, flashing 2MB of useless bytes over UART can be
really slow...
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=b:67081508
TEST=flash_ec --board=meowth_fp
Change-Id: Ie396ee7d5b5771e0f6249e38da37ef8329c84ae3
Reviewed-on: https://chromium-review.googlesource.com/856978
Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
Diffstat (limited to 'util')
| -rw-r--r-- | util/stm32mon.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/util/stm32mon.c b/util/stm32mon.c index b9896a00c0..c4c5de4fbf 100644 --- a/util/stm32mon.c +++ b/util/stm32mon.c @@ -858,6 +858,12 @@ int write_flash(int fd, struct stm32_def *chip, const char *filename, } fclose(hnd); + /* faster write: skip empty trailing space */ + while (res && buffer[res - 1] == 0xff) + res--; + /* ensure 'res' is multiple of 4 given 'size' is and res <= size */ + res = (res + 3) & ~3; + printf("Writing %d bytes at 0x%08x\n", res, offset); written = command_write_mem(fd, offset, res, buffer); if (written != res) { |