1 files changed, 42 insertions, 0 deletions
diff --git a/roms/u-boot/scripts/get_default_envs.sh b/roms/u-boot/scripts/get_default_envs.sh
new file mode 100755
index 000000000..d1f2ce4d5
--- /dev/null
+++ b/roms/u-boot/scripts/get_default_envs.sh
@@ -0,0 +1,42 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2016, Lukasz Majewski <l.majewski@majess.pl>
+#
+
+# 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 ${path} -path "*/env/*" -not -path "*/spl/*" \
+			 -not -path "*/tools/*" -name "${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 --field-separator== -k1,1 --stable
+
+rm ${ENV_OBJ_FILE_COPY}
+
+exit 0