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Add uart_prefix flag to control which uart is used to flash.

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There are CrOS devices that have multiple embedded controllers and
therefore multiple uarts that can be used for programming.

This CL allows user to set the uart_prefix to access the alternate
uarts via the --uart_prefix argument.  Default is still 'ec'.

Signed-off-by: Todd Broch <tbroch@chromium.org>

BRANCH=none
BUG=chrome-os-partner:28826
TEST=util/flash_ec --board=samus_pd --uart_prefix=usbpd

Change-Id: I9fbe8d13067b7f514447645b2587dda706445661
Reviewed-on: https://chromium-review.googlesource.com/199900
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Todd Broch <tbroch@chromium.org>
Commit-Queue: Todd Broch <tbroch@chromium.org>
This commit is contained in:
Todd Broch
2014-05-14 14:08:11 -07:00
committed by chrome-internal-fetch
parent 4cb6971daf
commit 1fc8e63681
1 changed files with 8 additions and 6 deletions
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14
util/flash_ec
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@@ -18,6 +18,8 @@ DEFINE_integer port 9999 \
"Port to communicate to servo on."
DEFINE_boolean ro "${FLAGS_FALSE}" \
"Write only the read-only partition"
DEFINE_string uart_prefix "ec" \
"Prefix name (ec|usbpd) to prepend to various UART servo controls."
DEFINE_boolean unprotect "${FLAGS_FALSE}" \
"Clear the protect flag."
@@ -113,7 +115,7 @@ 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 ${FLAGS_uart_prefix}_uart_pty || \
die "${SERVOD_FAIL}") | cut -d: -f2
}
@@ -183,10 +185,10 @@ function flash_stm32() {
free_pty ${EC_UART}
if [ "${SERVO_TYPE}" = "servo" ] ; then
dut_control ec_uart_en:on
dut_control ${FLAGS_uart_prefix}_uart_en:on
fi
dut_control ec_uart_parity:even
dut_control ec_uart_baudrate:115200
dut_control ${FLAGS_uart_prefix}_uart_parity:even
dut_control ${FLAGS_uart_prefix}_uart_baudrate:115200
# Force the EC to boot in serial monitor mode
ec_enable_boot0
# Reset the EC
@@ -231,10 +233,10 @@ function flash_lm4() {
}
IMG="$(ec_image)"
info "Using EC image : ${IMG}"
info "Using ${FLAGS_uart_prefix} image : ${IMG}"
EC_UART="$(ec_uart)"
info "EC UART pty : ${EC_UART}"
info "${FLAGS_uart_prefix} UART pty : ${EC_UART}"
if dut_control boot_mode 2>/dev/null ; then
SERVO_TYPE=toad