download: Allow keeping .git dirs with NODELETE=git

Keeping the git repositories is useful while development, e.g. to avoid
git cloning repositories over and over again while debugging download
scripts. Setting the NODELETE environment variable keeps the blobs and
the git repositories. Allow a slightly finer-tuned version of this where
we can keep only the git-related files by setting the variable to "git".

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>

download

@@ -6,6 +6,7 @@
 #	Copyright (C) 2015 Patrick "P. J." McDermott <pj@pehjota.net>
 #	Copyright (C) 2015, 2016 Klemens Nanni <contact@autoboot.org>
 #	Copyright (C) 2022, Caleb La Grange <thonkpeasant@protonmail.com>
+#	Copyright (C) 2022 Alper Nebi Yasak <alpernebiyasak@gmail.com>
 #
 #	This program is free software: you can redistribute it and/or modify
 #	it under the terms of the GNU General Public License as published by
@@ -31,8 +32,12 @@ set -u -e
 # set this when you want to modify each coreboot tree
 # for example, you want to test custom patches
 # NODELETE= ./download coreboot
+deletegit="true"
 deleteblobs="true"
-[ "x${NODELETE+set}" = 'xset' ] && deleteblobs="false"
+if [ "x${NODELETE+set}" = 'xset' ]; then
+	[ "x${NODELETE:-all}" = "xgit" ] && deletegit="false"
+	[ "x${NODELETE:-all}" = "xall" ] && deleteblobs="false" && deletegit="false"
+fi
 
 rm -f "build_error"
 
@@ -89,6 +94,8 @@ if [ "${program}" = "all" ]; then
 		if [ -f "${downloadProgram}" ]; then
 			if [ "${deleteblobs}" = "false" ]; then
 				NODELETE= "${downloadProgram}"
+			elif [ "${deletegit}" = "false" ]; then
+				NODELETE=git "${downloadProgram}"
 			else
 				"${downloadProgram}"
 			fi
@@ -103,12 +110,16 @@ fi
 if [ $# -lt 1 ]; then	
 	if [ "${deleteblobs}" = "false" ]; then
 		NODELETE= "${download}/${program}"
+	elif [ "${deletegit}" = "false" ]; then
+		NODELETE=git "${download}/${program}"
 	else
 		"${download}/${program}"
 	fi
 else	
 	if [ "${deleteblobs}" = "false" ]; then
 		NODELETE= "${download}/${program}" $@
+	elif [ "${deletegit}" = "false" ]; then
+		NODELETE=git "${download}/${program}" $@
 	else
 		"${download}/${program}" $@
 	fi

resources/scripts/download/coreboot

@@ -3,6 +3,7 @@
 #  helper script: download coreboot
 #
 #	Copyright (C) 2014, 2015, 2016, 2020, 2021 Leah Rowe <info@minifree.org>
+#	Copyright (C) 2022 Alper Nebi Yasak <alpernebiyasak@gmail.com>
 #
 #	This program is free software: you can redistribute it and/or modify
 #	it under the terms of the GNU General Public License as published by
@@ -64,8 +65,12 @@ fi
 # set this when you want to modify each coreboot tree
 # for example, you want to test custom patches
 # NODELETE= ./download coreboot
+deletegit="true"
 deleteblobs="true"
-[ "x${NODELETE+set}" = 'xset' ] && deleteblobs="false"
+if [ "x${NODELETE+set}" = 'xset' ]; then
+	[ "x${NODELETE:-all}" = "xgit" ] && deletegit="false"
+	[ "x${NODELETE:-all}" = "xall" ] && deleteblobs="false" && deletegit="false"
+fi
 
 # Error handling is extreme in this script.
 # This script handles the internet, and Git. Both are inherently unreliable.
@@ -239,9 +244,11 @@ rm -f resources/coreboot/*/seen
 rm -f "build_error"
 printf "\n\n"
 if [ "${deleteblobs}" = "true" ]; then
+	if [ "${deletegit}" = "true" ]; then
 		rm -Rf coreboot/coreboot/
 		rm -Rf coreboot/.git* coreboot/*/.git* coreboot/*/3rdparty/*/.git*
 		rm -Rf coreboot/*/util/nvidia/cbootimage/.git*
+	fi
 	for cbdir in coreboot/*; do
 		if [ ! -d "${cbdir}" ]; then continue; fi
 		cbtree="${cbdir##coreboot/}"

resources/scripts/download/u-boot

@@ -25,9 +25,13 @@ set -u -e
 
 # set this when you want to modify each u-boot tree
 # for example, you want to test custom patches
-# NODELETE= ./download coreboot
+# NODELETE= ./download u-boot
+deletegit="true"
 deleteblobs="true"
-[ "x${NODELETE+set}" = 'xset' ] && deleteblobs="false"
+if [ "x${NODELETE+set}" = 'xset' ]; then
+	[ "x${NODELETE:-all}" = "xgit" ] && deletegit="false"
+	[ "x${NODELETE:-all}" = "xall" ] && deleteblobs="false" && deletegit="false"
+fi
 
 # Error handling is extreme in this script.
 # This script handles the internet, and Git. Both are inherently unreliable.
@@ -305,7 +309,9 @@ download_uboot_board()
 	printf "\n\n"
 
 	if [ "${deleteblobs}" = "true" ]; then
+		if [ "${deletegit}" = "true" ]; then
 			rm -rf "${ubtree}"/.git* "${ubtree}"/*/.git*
+		fi
 		blobslist="$(print_blobs_list_path "${board}")"
 		for blob_path in $(strip_comments "${blobslist}"); do
 		    if echo "${blob_path}" | \
@@ -347,7 +353,7 @@ if [ $# -eq 0 ] ; then
 		download_uboot_board "${board}"
 	done
 
-	if [ "${deleteblobs}" = "true" ]; then
+	if [ "${deletegit}" = "true" ]; then
 		rm -rf u-boot/u-boot/ u-boot/.git*
 	fi
 
@@ -396,7 +402,7 @@ elif [ $# -eq 1 ] ; then
 		fi
 	done
 
-	if [ "${deleteblobs}" = "true" ]; then
+	if [ "${deletegit}" = "true" ]; then
 		rm -rf u-boot/u-boot/ u-boot/.git*
 	fi