From: Álvaro Fernández Rojas <noltari@gmail.com>
Date: Thu, 15 Jun 2023 08:46:10 +0000 (+0200)
Subject: base-files: upgrade: nand: add JFFS2 cleanmarkers support
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=25f6252620f2b00b4be922df011cec936aeeff42;p=openwrt%2Fstaging%2Fblocktrron.git

base-files: upgrade: nand: add JFFS2 cleanmarkers support

Some Broadcom MIPS devices require JFFS2 cleanmarkers to be present on the
kernel partition or the bootloader will identify the partition as corrupt and
won't boot the kernel.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry picked from commit 434df8df549a4d709be9eb19c0d2bd8abb4d4881)
---

diff --git a/package/base-files/files/lib/upgrade/nand.sh b/package/base-files/files/lib/upgrade/nand.sh
index fa29d575a8..d910bf1791 100644
--- a/package/base-files/files/lib/upgrade/nand.sh
+++ b/package/base-files/files/lib/upgrade/nand.sh
@@ -301,6 +301,7 @@ nand_upgrade_fit() {
 nand_upgrade_tar() {
 	local tar_file="$1"
 	local gz="$2"
+	local jffs2_markers="${CI_JFFS2_CLEAN_MARKERS:-0}"
 
 	# WARNING: This fails if tar contains more than one 'sysupgrade-*' directory.
 	local board_dir="$(tar t${gz}f "$tar_file" | grep -m 1 '^sysupgrade-.*/$')"
@@ -329,6 +330,7 @@ nand_upgrade_tar() {
 			ubi_kernel_length="$kernel_length"
 		fi
 	fi
+
 	local has_env=0
 	nand_upgrade_prepare_ubi "$rootfs_length" "$rootfs_type" "$ubi_kernel_length" "$has_env" || return 1
 
@@ -340,8 +342,14 @@ nand_upgrade_tar() {
 	fi
 	if [ "$kernel_length" ]; then
 		if [ "$kernel_mtd" ]; then
-			tar xO${gz}f "$tar_file" "$board_dir/kernel" | \
-				mtd write - "$CI_KERNPART"
+			if [ "$jffs2_markers" = 1 ]; then
+				flash_erase -j "/dev/mtd${kernel_mtd}" 0 0
+				tar xO${gz}f "$tar_file" "$board_dir/kernel" | \
+					nandwrite "/dev/mtd${kernel_mtd}" -
+			else
+				tar xO${gz}f "$tar_file" "$board_dir/kernel" | \
+					mtd write - "$CI_KERNPART"
+			fi
 		else
 			local ubidev="$( nand_find_ubi "${CI_KERN_UBIPART:-$CI_UBIPART}" )"
 			local kern_ubivol="$( nand_find_volume $ubidev "$CI_KERNPART" )"