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#!/bin/bash
# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
COMMON_SH=/usr/lib/crosutils/common.sh
. "${COMMON_SH}" || exit 1
# Flags
DEFINE_string board "${DEFAULT_BOARD}" \
"The board to run debugger on."
DEFINE_string image "" \
"Full pathname of the EC firmware image to flash."
DEFINE_boolean ro "${FLAGS_FALSE}" \
"Write only the read-only partition"
DEFINE_string offset "0" \
"Offset where to program the image from."
DEFINE_boolean unprotect "${FLAGS_FALSE}" \
"Clear the protect flag."
# Parse command line
FLAGS_HELP="usage: $0 [flags]"
FLAGS "$@" || exit 1
eval set -- "${FLAGS_ARGV}"
check_flags_only_and_allow_null_arg "$@" && set --
set -e
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
}
trap cleanup EXIT
BOARD=${FLAGS_board}
BOARD_ROOT=/build/${BOARD}
# Possible default EC images
if [ "${FLAGS_ro}" = ${FLAGS_TRUE} ] ; then
EC_FILE=ec.RO.flat
else
EC_FILE=ec.bin
fi
EMERGE_BUILD=${BOARD_ROOT}/firmware/${EC_FILE}
LOCAL_BUILD=${SRC_ROOT}/platform/ec/build/${BOARD}/${EC_FILE}
# Find the EC image to use
function ec_image() {
# No image specified on the command line, try default ones
if [[ -n "${FLAGS_image}" ]] ; then
if [ -f "${FLAGS_image}" ]; then
echo "${FLAGS_image}"
return
fi
die "Invalid image path : ${FLAGS_image}"
else
if [ -f "${LOCAL_BUILD}" ]; then
echo "${LOCAL_BUILD}"
return
fi
if [ -f "${EMERGE_BUILD}" ]; then
echo "${EMERGE_BUILD}"
return
fi
fi
die "no EC image found : build one or specify one."
}
# Find the EC UART on the servo v2
function ec_uart() {
SERVOD_FAIL="Cannot communicate with servo. is servod running ?"
(dut-control uart1_pty || die "${SERVOD_FAIL}") | cut -d: -f2
}
# Servo variables management
SERVO_VARS="uart1_en uart1_parity uart1_baudrate \
jtag_buf_on_flex_en jtag_buf_en spi1_vref"
function dut_control() {
dut-control "$1" >/dev/null
}
function servo_save() {
dut-control ${SERVO_VARS}
}
function servo_restore() {
echo "$1" | while read line
do
dut_control "$line"
done
}
# Board specific flashing scripts
function flash_daisy() {
TOOL_PATH="${SCRIPT_LOCATION}/../build/${BOARD}/util:$PATH"
STM32MON=$(PATH="${TOOL_PATH}" which stm32mon)
if [ ! -x "$STM32MON" ]; then
die "no stm32mon util found."
fi
if [ "${FLAGS_unprotect}" = ${FLAGS_TRUE} ] ; then
die "--unprotect not supported for this board."
fi
info "Using serial flasher : ${STM32MON}"
dut_control uart1_en:on
dut_control uart1_parity:even
dut_control uart1_baudrate:115200
# force the EC to boot in serial monitor mode
dut_control spi1_vref:pp3300
# reset the EC
dut_control cold_reset:on
dut_control cold_reset:off
${STM32MON} -d ${EC_UART} -e -w ${IMG}
}
function flash_link() {
OCD_CFG="servo_v2_slower.cfg"
OCD_PATH="${SRC_ROOT}/platform/ec/chip/lm4/openocd"
OCD_CMDS="init; flash_lm4 ${IMG} ${FLAGS_offset};"
if [ "${FLAGS_unprotect}" = ${FLAGS_TRUE} ] ; then
info "Clearing write protect flag."
OCD_CMDS="${OCD_CMDS} unprotect_link;"
fi
OCD_CMDS="${OCD_CMDS} shutdown;"
dut_control jtag_buf_on_flex_en:on
dut_control jtag_buf_en:on
sudo openocd -s "${OCD_PATH}" -f "${OCD_CFG}" -c "${OCD_CMDS}" || \
die "Failed to program ${IMG}"
}
IMG="$(ec_image)"
info "Using EC image : ${IMG}"
EC_UART="$(ec_uart)"
info "EC UART pty : ${EC_UART}"
save="$(servo_save)"
case "${BOARD}" in
daisy | snow | spring ) flash_daisy ;;
link ) flash_link ;;
*) die "board ${BOARD} not supported" ;;
esac
info "Flashing done."
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