new file mode 100755
@@ -0,0 +1,50 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright 2024 Linaro Ltd.
+#
+# Usage: from the top level U-Boot source tree, run:
+# $ ./lib/mbedtls/update-mbedtls-subtree.sh pull <release-tag>
+# $ ./lib/mbedtls/update-mbedtls-subtree.sh pick <commit-id>
+#
+# The script will pull changes from MbedTLS repo into U-Boot
+# as a subtree located as <U-Boot>/lib/mbedtls/external/mbedtls sub-directory.
+# It will automatically create a squash/merge commit listing the commits
+# imported.
+
+set -e
+
+merge_commit_msg=$(cat << EOF
+Subtree merge tag '$2' of MbedTLS repo [1] into lib/mbedtls/external/mbedtls
+
+[1] https://github.com/Mbed-TLS/mbedtls.git
+EOF
+)
+
+remote_add_and_fetch() {
+ if ! git remote get-url mbedtls_upstream 2>/dev/null
+ then
+ echo "Warning: Script automatically adds new git remote via:"
+ echo " git remote add mbedtls_upstream \\"
+ echo " https://github.com/Mbed-TLS/mbedtls.git"
+ git remote add mbedtls_upstream \
+ https://github.com/Mbed-TLS/mbedtls.git
+ fi
+ git fetch mbedtls_upstream master
+}
+
+if [ "$1" = "pull" ]
+then
+ remote_add_and_fetch
+ git subtree pull --prefix lib/mbedtls/external/mbedtls mbedtls_upstream \
+ "$2" --squash -m "${merge_commit_msg}"
+elif [ "$1" = "pick" ]
+then
+ remote_add_and_fetch
+ git cherry-pick -x --strategy=subtree \
+ -Xsubtree=lib/mbedtls/external/mbedtls/ "$2"
+else
+ echo "usage: $0 <op> <ref>"
+ echo " <op> pull or pick"
+ echo " <ref> release tag [pull] or commit id [pick]"
+fi
lib/mbedtls/update-mbedtls-subtree.sh is a wrapper of git subtree commands. Usage from U-Boot top directory, run: $ ./lib/mbedtls/update-mbedtls-subtree.sh pull <release-tag> $ ./lib/mbedtls/update-mbedtls-subtree.sh pick <commit-id> Signed-off-by: Raymond Mao <raymond.mao@linaro.org> --- Changes in v2 - Initial patch. lib/mbedtls/update-mbedtls-subtree.sh | 50 +++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100755 lib/mbedtls/update-mbedtls-subtree.sh