From: Linus Walleij <linusw@kernel.org>
Date: Sun, 25 Jan 2026 18:01:45 +0000 (+0100)
Subject: gemini: Fix up sysupgrade platform.sh script
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=04bc0b6d3f440cc139d6e320cba165b37cda9c9b;p=thirdparty%2Fopenwrt.git

gemini: Fix up sysupgrade platform.sh script

The Storlink reference designs sometimes fail upgrade because
not the entire partition is used, so the size isn't equal to
the actual flash space available for the partition.

Fix this by calculating the actual partition sizes by measuring
across the partition offsets instead.

Link: https://github.com/openwrt/openwrt/pull/21750
Signed-off-by: Linus Walleij <linusw@kernel.org>
---

diff --git a/target/linux/gemini/base-files/lib/upgrade/platform.sh b/target/linux/gemini/base-files/lib/upgrade/platform.sh
index 9fb57a28264..f7620fd244a 100644
--- a/target/linux/gemini/base-files/lib/upgrade/platform.sh
+++ b/target/linux/gemini/base-files/lib/upgrade/platform.sh
@@ -2,18 +2,26 @@ REQUIRE_IMAGE_METADATA=1
 MTDSYSFS=/sys/class/mtd
 
 gemini_do_platform_upgrade() {
+	MTD1OF=`cat ${MTDSYSFS}/mtd1/offset`
+	MTD2OF=`cat ${MTDSYSFS}/mtd2/offset`
+	MTD3OF=`cat ${MTDSYSFS}/mtd3/offset`
+	MTD4OF=`cat ${MTDSYSFS}/mtd4/offset`
+	MTD1SZ=$((${MTD2OF} - ${MTD1OF}))
+	MTD2SZ=$((${MTD3OF} - ${MTD2OF}))
+	MTD3SZ=$((${MTD4OF} - ${MTD3OF}))
 	ESZ=`cat ${MTDSYSFS}/mtd1/erasesize`
 	if test ${ESZ} == 131072 ; then
-		echo "MTD1 has 128kb EB size..."
+		echo "MTD has 128kb EB size"
 	else
-		echo "MTD1 has wrong EB size!"
+		echo "MTD has wrong EB size!"
 	fi
-	NAME=`cat ${MTDSYSFS}/mtd1/name`
-	SZ=`cat ${MTDSYSFS}/mtd1/size`
 	KSZ=$(($ESZ * $2))
+	RSZ=$(($ESZ * $3))
+	ASZ=$(($ESZ * $4))
+	NAME=`cat ${MTDSYSFS}/mtd1/name`
 	if test "x${NAME}" == "xKern" ; then
-		if test ${SZ} == ${KSZ} ; then
-			echo "MTD1 OK..."
+		if test ${MTD1SZ} == ${KSZ} ; then
+			echo "MTD1 Kern ${MTD1SZ} OK..."
 		else
 			echo "MTD1 is wrong size, aborting" >&2
 			exit 1
@@ -23,13 +31,11 @@ gemini_do_platform_upgrade() {
 		exit 1
 	fi
 	NAME=`cat ${MTDSYSFS}/mtd2/name`
-	SZ=`cat ${MTDSYSFS}/mtd2/size`
-	RSZ=$(($ESZ * $3))
 	if test "x${NAME}" == "xRamdisk" ; then
-		if test ${SZ} == ${RSZ} ; then
-			echo "MTD2 OK..."
+		if test ${MTD2SZ} == ${RSZ} ; then
+			echo "MTD2 Ramdisk ${MTD2SZ} OK..."
 		else
-			echo "MTD2 is wrong size, aborting" >&2
+			echo "MTD2 is at wrong offset, aborting" >&2
 			exit 1
 		fi
 	else
@@ -37,13 +43,11 @@ gemini_do_platform_upgrade() {
 		exit 1
 	fi
 	NAME=`cat ${MTDSYSFS}/mtd3/name`
-	SZ=`cat ${MTDSYSFS}/mtd3/size`
-	ASZ=$(($ESZ * $4))
 	if test "x${NAME}" == "xApplication" ; then
-		if test ${SZ} == ${ASZ} ; then
-			echo "MTD3 OK..."
+		if test ${MTD3SZ} == ${ASZ} ; then
+			echo "MTD3 Application ${MTD3SZ} OK..."
 		else
-			echo "MTD3 is wrong size, aborting" >&2
+			echo "MTD3 is at wrong offset, aborting" >&2
 			exit 1
 		fi
 	else