get_default_envs.sh 887 B

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  1. #! /bin/bash
  2. #
  3. # Copyright (C) 2016, Lukasz Majewski <l.majewski@majess.pl>
  4. #
  5. # SPDX-License-Identifier: GPL-2.0+
  6. #
  7. # This file extracts default envs from built u-boot
  8. # usage: get_default_envs.sh > u-boot-env-default.txt
  9. set -ue
  10. ENV_OBJ_FILE="env_common.o"
  11. ENV_OBJ_FILE_COPY="copy_${ENV_OBJ_FILE}"
  12. echoerr() { echo "$@" 1>&2; }
  13. path=$(readlink -f $0)
  14. env_obj_file_path=$(find ${path%/scripts*} -not -path "*/spl/*" \
  15. -name "${ENV_OBJ_FILE}")
  16. [ -z "${env_obj_file_path}" ] && \
  17. { echoerr "File '${ENV_OBJ_FILE}' not found!"; exit 1; }
  18. cp ${env_obj_file_path} ${ENV_OBJ_FILE_COPY}
  19. # NOTE: objcopy saves its output to file passed in
  20. # (copy_env_common.o in this case)
  21. objcopy -O binary -j ".rodata.default_environment" ${ENV_OBJ_FILE_COPY}
  22. # Replace default '\0' with '\n' and sort entries
  23. tr '\0' '\n' < ${ENV_OBJ_FILE_COPY} | sort -u
  24. rm ${ENV_OBJ_FILE_COPY}
  25. exit 0