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-rw-r--r--target/linux/gemini/image/Makefile31
1 files changed, 23 insertions, 8 deletions
diff --git a/target/linux/gemini/image/Makefile b/target/linux/gemini/image/Makefile
index e1b6941201..24402f6a9b 100644
--- a/target/linux/gemini/image/Makefile
+++ b/target/linux/gemini/image/Makefile
@@ -7,6 +7,10 @@
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/image.mk
+define Build/copy-kernel
+ $(MAKE) -C copy-kernel CROSS_COMPILE=$(TARGET_CROSS)
+endef
+
# Cook a "WRGG" image, this board is apparently one in the D-Link
# WRGG family and uses the exact same firmware format as other
# D-Link devices.
@@ -76,18 +80,29 @@ endef
# Create the default image format used by the StorLink reference design
# SL93512r, Raidsonic NAS4220B and Itian Square One SQ201
-# with the squashfs and overlay inside the "rd.gz" file.
-# We pad it out to 6144K which is the size of the initramfs partition.
+# with the squashfs and overlay inside the "application" partition.
+#
+# These devices have a hard-coded partition table that the boot loader
+# constantly reflashes back, so we need to work around it like this:
#
-# The "application" partition is just blank. You can put anything
-# there when using OpenWRT. We just use that to create the
-# "sysupgrade" firmware image.
+# 0x000000120000-0x000000320000 : "Kern" - small copy routine and first
+# part of the kernel goes here
+# 0x000000320000-0x000000920000 : "Ramdisk" - second part of the kernel and
+# some padding goes here
+# 0x000000920000-0x000000f20000 : "Application" - rootfs goes here
define Build/storlink-default-images
mkdir -p $@.tmp
- mv $@ $@.tmp/rd.gz
- dd if=/dev/zero of=$@.tmp/hddapp.tgz bs=6144k count=1
- cp $(IMAGE_KERNEL) $@.tmp/zImage
+ $(call Build/copy-kernel)
+ # "App" partition is the rootfs
+ mv $@ $@.tmp/hddapp.tgz
+ # 256 bytes copy routine
+ dd if=copy-kernel/copy-kernel.bin of=$@.tmp/zImage
+ $(call Image/pad-to,$@.tmp/zImage,512)
+ # Copy first part of the kernel into zImage
+ dd if=$(IMAGE_KERNEL) of=$@.tmp/zImage bs=1 seek=512 count=2096640
+ # Put the rest of the kernel into the "ramdisk"
+ dd if=$(IMAGE_KERNEL) of=$@.tmp/rd.gz bs=1 skip=2096640 count=6144k conv=sync
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