u-boot/scripts/get_default_envs.sh
Lukasz Majewski 0778e7c50b script: Make the get_default_envs.sh script working with newest u-boot
This commit fixes several issues:

- After moving env related code to ./env directory the env_common.o file
is no longer present in the system (has been replaced with built-in.o).

- Use ${OBJCOPY} if available, fallback to system default's objcopy if not
present.

- Extend the script to accept different build directory than current one.
It is extremely handy with OE usage, where source code is separated from
build.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Tested-by: Alex Kiernan <alex.kiernan@gmail.com>
2018-02-20 08:21:30 -05:00

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#! /bin/bash
#
# Copyright (C) 2016, Lukasz Majewski <l.majewski@majess.pl>
#
# SPDX-License-Identifier: GPL-2.0+
#
# This file extracts default envs from built u-boot
# usage: get_default_envs.sh [build dir] > u-boot-env-default.txt
set -ue
: "${OBJCOPY:=${CROSS_COMPILE:-}objcopy}"
ENV_OBJ_FILE="built-in.o"
ENV_OBJ_FILE_COPY="copy_${ENV_OBJ_FILE}"
echoerr() { echo "$@" 1>&2; }
if [ "$#" -eq 1 ]; then
path=${1}
else
path=$(readlink -f $0)
path=${path%/scripts*}
fi
env_obj_file_path=$(find ${path} -path "*/env/*" -not -path "*/spl/*" \
-name "${ENV_OBJ_FILE}")
[ -z "${env_obj_file_path}" ] && \
{ echoerr "File '${ENV_OBJ_FILE}' not found!"; exit 1; }
cp ${env_obj_file_path} ${ENV_OBJ_FILE_COPY}
# NOTE: objcopy saves its output to file passed in
# (copy_${ENV_OBJ_FILE} in this case)
${OBJCOPY} -O binary -j ".rodata.default_environment" ${ENV_OBJ_FILE_COPY}
# Replace default '\0' with '\n' and sort entries
tr '\0' '\n' < ${ENV_OBJ_FILE_COPY} | sort -u
rm ${ENV_OBJ_FILE_COPY}
exit 0