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| author | Aseda Aboagye <aaboagye@google.com> | 2015-12-18 14:53:39 -0800 |
|---|---|---|
| committer | ChromeOS bot <3su6n15k.default@developer.gserviceaccount.com> | 2016-02-18 19:33:47 +0000 |
| commit | 3c5457348e08d8606a8398cc9265cb144ec4baf6 (patch) | |
| tree | c38d390da102120d0c94afc6847a1f827bd34a25 | |
| parent | f168cf03e8d939e64438f8e0632bfefe7215988c (diff) | |
| download | chrome-ec-3c5457348e08d8606a8398cc9265cb144ec4baf6.tar.gz | |
flash_ec: Disconnect EC-3PO interps when flashing.
Due to the recent changes for EC-3PO in servod, flash_ec needs to be
modified in the same way that was done for ToT.
Since the stm32 MCUs are programmed over the UART, we need to make
some changes to allow the interpreter to stop listening to the UART
PTY when flash_ec needs those PTYs. Otherwise, the EC-3PO interpreter
will interfere with the programming and cause the flash to fail every
time.
BUG=chromium:571170
BUG=chromium:587600
BRANCH=nyan
TEST=Tested same patch on other branches to flash stm32 ECs.
Change-Id: I53cda568de1eedcb817baff1eab467dcd28ac187
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/328360
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Commit-Queue: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
| -rwxr-xr-x | util/flash_ec | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/util/flash_ec b/util/flash_ec index 2af7475668..3a6c9c6fa3 100755 --- a/util/flash_ec +++ b/util/flash_ec @@ -108,7 +108,8 @@ DUT_CONTROL_CMD="dut-control --port=${FLAGS_port}" # Find the EC UART on the servo v2 function ec_uart() { SERVOD_FAIL="Cannot communicate with servo. is servod running ?" - ($DUT_CONTROL_CMD ec_uart_pty || \ + ($DUT_CONTROL_CMD raw_ec_uart_pty || \ + $DUT_CONTROL_CMD ec_uart_pty || \ die "${SERVOD_FAIL}") | cut -d: -f2 } @@ -137,6 +138,12 @@ function servo_restore() { function free_pty() { local pids + # Disconnect the EC-3PO interpreter from the UART since it will + # interfere with flashing. + dut_control ec_ec3po_interp_connect:off || \ + warn "hdctools cannot disconnect the EC-3PO interpreter from" \ + "the UART." + pids=$(lsof -F p 2>/dev/null -- $1 | cut -d'p' -f2) if [ "${pids}" == "" ]; then return @@ -188,6 +195,11 @@ function flash_stm32() { ec_reset # Unprotect flash, erase, and write ${STM32MON} -d ${EC_UART} -u -e -w ${IMG} + + # Reconnect the EC-3PO interpreter to the UART. + dut_control ec_ec3po_interp_connect:on || \ + warn "hdctools cannot reconnect the EC-3PO interpreter to" \ + "the UART." } function flash_link() { |