[openwrt/openwrt] gemini: pad storlink reference firmware to 128kb

[LEDE Commits]

linusw pushed a commit to openwrt/openwrt.git, branch openwrt-25.12:
https://git.openwrt.org/43547e93144432f535b1a852eb365fb37c66e401

commit 43547e93144432f535b1a852eb365fb37c66e401
Author: Linus Walleij <linusw at kernel.org>
AuthorDate: Sun Jan 25 21:01:47 2026 +0100

    gemini: pad storlink reference firmware to 128kb
    
    The redboot partition parser gets upset if a partition
    doesn't end on an even erase block and marks the partition
    read-only.
    
    Fix this by always padding the three firmware items to
    128kb.
    
    It is no longer required for the filesystem to be padded
    to 6144kb, so we pad this to just 128kb like the kernel
    images.
    
    Link: https://github.com/openwrt/openwrt/pull/21750
    (cherry picked from commit db7a2fb217d7e5480e3f5c57c061a675cf9dd83a)
    Link: https://github.com/openwrt/openwrt/pull/21973
    Signed-off-by: Linus Walleij <linusw at kernel.org>
---
 target/linux/gemini/image/Makefile | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/target/linux/gemini/image/Makefile b/target/linux/gemini/image/Makefile
index 7e208ed981..1b5961db4e 100644
--- a/target/linux/gemini/image/Makefile
+++ b/target/linux/gemini/image/Makefile
@@ -99,8 +99,10 @@ define CreateStorlinkTarfile
 	$(call Image/pad-to,$@.tmp/zImage,512)
 	# Copy first part of the kernel into zImage
 	dd if=$(IMAGE_KERNEL) of=$@.tmp/zImage bs=1 seek=512 count=$(3)
+	$(call Image/pad-to,$@.tmp/zImage,128k)
 	# Put the rest of the kernel into the "ramdisk"
 	dd if=$(IMAGE_KERNEL) of=$@.tmp/rd.gz bs=1 skip=$(3) count=6144k conv=sync
+	$(call Image/pad-to,$@.tmp/rd.gz,128k)
 	cp ./ImageInfo-$(1) $@.tmp/ImageInfo
 
 	sed -i -e "s/DATESTR/`date +%Y%m%d $(if $(SOURCE_DATE_EPOCH),--date "@$(SOURCE_DATE_EPOCH)")`/g" $@.tmp/ImageInfo
@@ -200,9 +202,9 @@ define Device/storlink-reference
         #              2096640 bytes zImage
 	# Ramdisk      6144k remaining zImage
 	# Application  6144k
-	IMAGE/factory.bin := append-rootfs | pad-rootfs | pad-to 6144k | \
+	IMAGE/factory.bin := append-rootfs | pad-rootfs | pad-to 128k | \
 		storlink-default-image $(1)
-	IMAGE/sysupgrade.bin := append-rootfs | pad-rootfs | pad-to 6144k | \
+	IMAGE/sysupgrade.bin := append-rootfs | pad-rootfs | pad-to 128k | \
 		storlink-default-image $(1) | append-metadata
 	DEVICE_PACKAGES := $(GEMINI_NAS_PACKAGES)
 endef
@@ -225,9 +227,9 @@ define Device/raidsonic_ib-4220-b
 	# Kern         3072k - 512 | = 3145216
 	# Ramdisk      6144k       | = 9216k
 	# Application  6144k       | = 15360k
-	IMAGE/factory.bin := append-rootfs | pad-rootfs | pad-to 6144k | \
+	IMAGE/factory.bin := append-rootfs | pad-rootfs | pad-to 128k | \
 		raidsonic-ib-4220-b-image $(1)
-	IMAGE/sysupgrade.bin := append-rootfs | pad-rootfs | pad-to 6144k | \
+	IMAGE/sysupgrade.bin := append-rootfs | pad-rootfs | pad-to 128k | \
 		raidsonic-ib-4220-b-image $(1) | append-metadata
 endef
 TARGET_DEVICES += raidsonic_ib-4220-b