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-rwxr-xr-xtools/update-subtree.sh85
1 files changed, 85 insertions, 0 deletions
diff --git a/tools/update-subtree.sh b/tools/update-subtree.sh
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+++ b/tools/update-subtree.sh
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+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (c) 2024 Linaro Limited
+#
+# Usage: from the top level U-Boot source tree, run:
+# $ ./tools/update-subtree.sh pull <subtree-name> <release-tag>
+# Or:
+# $ ./tools/update-subtree.sh pick <subtree-name> <commit-id>
+#
+# The script will pull changes from subtree repo into U-Boot.
+# It will automatically create a squash/merge commit listing the commits
+# imported.
+
+set -e
+
+print_usage() {
+ echo "usage: $0 <op> <subtree-name> <ref>"
+ echo " <op> pull or pick"
+ echo " <subtree-name> mbedtls or dts or lwip"
+ echo " <ref> release tag [pull] or commit id [pick]"
+}
+
+if [ $# -ne 3 ]; then
+ print_usage
+ exit 1
+fi
+
+op=$1
+subtree_name=$2
+ref=$3
+
+set_params() {
+ case "$subtree_name" in
+ mbedtls)
+ path=lib/mbedtls/external/mbedtls
+ repo_url=https://github.com/Mbed-TLS/mbedtls.git
+ remote_name="mbedtls_upstream"
+ ;;
+ dts)
+ path=dts/upstream
+ repo_url=https://git.kernel.org/pub/scm/linux/kernel/git/devicetree/devicetree-rebasing.git
+ remote_name="devicetree-rebasing"
+ ;;
+ lwip)
+ path=lib/lwip/lwip
+ repo_url=https://git.savannah.gnu.org/git/lwip.git
+ remote_name="lwip_upstream"
+ ;;
+ *)
+ echo "Invalid subtree name: $subtree_name"
+ print_usage
+ exit 1
+ esac
+}
+
+set_params
+
+merge_commit_msg=$(cat << EOF
+Subtree merge tag '$ref' of $subtree_name repo [1] into $path
+
+[1] $repo_url
+EOF
+)
+
+remote_add_and_fetch() {
+ if [ -z "$(git remote get-url $remote_name 2>/dev/null)" ]; then
+ echo "Warning: Script automatically adds new git remote via:"
+ echo " git remote add $remote_name \\"
+ echo " $repo_url"
+ git remote add $remote_name $repo_url
+ fi
+ git fetch $remote_name master
+}
+
+if [ "$op" = "pull" ]; then
+ remote_add_and_fetch
+ git subtree pull --prefix $path $remote_name "$ref" --squash -m "$merge_commit_msg"
+elif [ "$op" = "pick" ]; then
+ remote_add_and_fetch
+ git cherry-pick -x --strategy=subtree -Xsubtree=$path/ "$ref"
+else
+ print_usage
+ exit 1
+fi