1#! /bin/bash 2# SPDX-License-Identifier: GPL-2.0+ 3# 4# Copyright (C) 2016, Lukasz Majewski <l.majewski@majess.pl> 5# 6 7# This file extracts default envs from built u-boot 8# usage: get_default_envs.sh [build dir] > u-boot-env-default.txt 9set -ue 10 11: "${OBJCOPY:=${CROSS_COMPILE:-}objcopy}" 12 13ENV_OBJ_FILE="common.o" 14ENV_OBJ_FILE_COPY="copy_${ENV_OBJ_FILE}" 15 16echoerr() { echo "$@" 1>&2; } 17 18if [ "$#" -eq 1 ]; then 19 path=${1} 20else 21 path=$(readlink -f $0) 22 path=${path%/scripts*} 23fi 24 25env_obj_file_path=$(find ${path} -path "*/env/*" -not -path "*/spl/*" \ 26 -not -path "*/tools/*" -name "${ENV_OBJ_FILE}") 27[ -z "${env_obj_file_path}" ] && \ 28 { echoerr "File '${ENV_OBJ_FILE}' not found!"; exit 1; } 29 30cp ${env_obj_file_path} ${ENV_OBJ_FILE_COPY} 31 32# NOTE: objcopy saves its output to file passed in 33# (copy_${ENV_OBJ_FILE} in this case) 34 35${OBJCOPY} --dump-section .rodata.default_environment=${ENV_OBJ_FILE_COPY} \ 36 ${env_obj_file_path} 37 38# Replace default '\0' with '\n' and sort entries 39tr '\0' '\n' < ${ENV_OBJ_FILE_COPY} | sort --field-separator== -k1,1 --stable 40 41rm ${ENV_OBJ_FILE_COPY} 42 43exit 0 44