3 # Copyright (C) 2016, Lukasz Majewski <l.majewski@majess.pl>
5 # SPDX-License-Identifier: GPL-2.0+
8 # This file extracts default envs from built u-boot
9 # usage: get_default_envs.sh [build dir] > u-boot-env-default.txt
12 : "${OBJCOPY:=${CROSS_COMPILE:-}objcopy}"
14 ENV_OBJ_FILE="built-in.o"
15 ENV_OBJ_FILE_COPY="copy_${ENV_OBJ_FILE}"
17 echoerr() { echo "$@" 1>&2; }
19 if [ "$#" -eq 1 ]; then
22 path=$(readlink -f $0)
23 path=${path%/scripts*}
26 env_obj_file_path=$(find ${path} -path "*/env/*" -not -path "*/spl/*" \
27 -name "${ENV_OBJ_FILE}")
28 [ -z "${env_obj_file_path}" ] && \
29 { echoerr "File '${ENV_OBJ_FILE}' not found!"; exit 1; }
31 cp ${env_obj_file_path} ${ENV_OBJ_FILE_COPY}
33 # NOTE: objcopy saves its output to file passed in
34 # (copy_${ENV_OBJ_FILE} in this case)
36 ${OBJCOPY} -O binary -j ".rodata.default_environment" ${ENV_OBJ_FILE_COPY}
38 # Replace default '\0' with '\n' and sort entries
39 tr '\0' '\n' < ${ENV_OBJ_FILE_COPY} | sort -u
41 rm ${ENV_OBJ_FILE_COPY}