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