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flash_ec: add support for flashing with Toad cable

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Add support for flashing Spring board through the Toad cable (given the
Write Protect screw is not on).

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

BRANCH=spring
BUG=chrome-os-partner:17570
TEST=with both a Toad cable and a servo v2, flash EC on Spring EVT
with the following command:
./util/flash_ec --board=spring
and check the state of the servo/toad before and after.

Change-Id: Ia4e0d32b062d58b4e906d3f006003fa6097add83
Reviewed-on: https://gerrit.chromium.org/gerrit/48031
Reviewed-by: Todd Broch <tbroch@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
This commit is contained in:
Vincent Palatin
2013-04-12 12:16:11 -07:00
committed by ChromeBot
parent 0ffc382af9
commit 0498d68732
1 changed files with 48 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
util/flash_ec
View File

@@ -29,15 +29,43 @@ check_flags_only_and_allow_null_arg "$@" && set --
set -e
SERVO_TYPE=servo
# reset the EC
toad_hard_reset() {
info "you probably need to hard-reset your EC with Refresh+Power"
}
servo_hard_reset() {
dut_control cold_reset:on
dut_control cold_reset:off
}
ec_reset() {
eval ${SERVO_TYPE}_hard_reset
}
# force the EC to boot in serial monitor mode
toad_boot0() {
dut_control boot_mode:yes
}
servo_boot0() {
dut_control spi1_vref:pp3300
}
ec_enable_boot0() {
eval ${SERVO_TYPE}_boot0
}
# Put back the servo and the system in a clean state at exit
cleanup() {
if [ -n "${save}" ]; then
info "Restoring servo settings..."
servo_restore "$save"
fi
# reset the EC
dut_control cold_reset:on
dut_control cold_reset:off
ec_reset
}
trap cleanup EXIT
@@ -80,21 +108,23 @@ DUT_CONTROL_CMD="dut-control --port=${FLAGS_port}"
# Find the EC UART on the servo v2
function ec_uart() {
SERVOD_FAIL="Cannot communicate with servo. is servod running ?"
($DUT_CONTROL_CMD uart1_pty || \
($DUT_CONTROL_CMD ec_uart_pty || \
die "${SERVOD_FAIL}") | cut -d: -f2
}
# Servo variables management
SERVO_VARS="uart1_en uart1_parity uart1_baudrate \
servo_VARS="ec_uart_en ec_uart_parity ec_uart_baudrate \
jtag_buf_on_flex_en jtag_buf_en spi1_vref"
toad_VARS="ec_uart_parity ec_uart_baudrate boot_mode"
function dut_control() {
$DUT_CONTROL_CMD "$1" >/dev/null
}
function servo_save() {
$DUT_CONTROL_CMD ${SERVO_VARS}
SERVO_VARS_NAME=${SERVO_TYPE}_VARS
$DUT_CONTROL_CMD ${!SERVO_VARS_NAME}
}
function servo_restore() {
@@ -128,14 +158,15 @@ function flash_daisy() {
info "Using serial flasher : ${STM32MON}"
free_pty ${EC_UART}
dut_control uart1_en:on
dut_control uart1_parity:even
dut_control uart1_baudrate:115200
if [ "${SERVO_TYPE}" = "servo" ] ; then
dut_control ec_uart_en:on
fi
dut_control ec_uart_parity:even
dut_control ec_uart_baudrate:115200
# force the EC to boot in serial monitor mode
dut_control spi1_vref:pp3300
ec_enable_boot0
# reset the EC
dut_control cold_reset:on
dut_control cold_reset:off
ec_reset
${STM32MON} -d ${EC_UART} -e -w ${IMG}
}
@@ -162,6 +193,11 @@ info "Using EC image : ${IMG}"
EC_UART="$(ec_uart)"
info "EC UART pty : ${EC_UART}"
if dut_control uart_mux 2>/dev/null ; then
SERVO_TYPE=toad
info "Using a TOAD cable"
fi
save="$(servo_save)"
case "${BOARD}" in