[openwrt/openwrt] build: image: add command to ubinize the kernel image

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/1fbc9c5e4dea7311236c8f74d6093bc968a710da

commit 1fbc9c5e4dea7311236c8f74d6093bc968a710da
Author: Robert Marko <robimarko at gmail.com>
AuthorDate: Mon Sep 20 12:19:37 2021 +0200

    build: image: add command to ubinize the kernel image
    
    Newer NAND devices from MikroTik like the hAP ac3
    require the kernel to be packed into UBIFS and then
    ubinized.
    
    So, since the ubinize-image.sh script can now ubinize
    kernel only as well lets add a command for it.
    
    This now allows calling ubinize-kernel in the kernel
    packaging at then end.
    
    Signed-off-by: Robert Marko <robimarko at gmail.com>
---
 include/image-commands.mk | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/image-commands.mk b/include/image-commands.mk
index 4b5ff36ebe..f0557936c9 100644
--- a/include/image-commands.mk
+++ b/include/image-commands.mk
@@ -122,6 +122,18 @@ define Build/append-ubi
 	rm $@.tmp
 endef
 
+define Build/ubinize-kernel
+	cp $@ $@.tmp
+	sh $(TOPDIR)/scripts/ubinize-image.sh \
+		--kernel $@.tmp \
+		$@ \
+		-p $(BLOCKSIZE:%k=%KiB) -m $(PAGESIZE) \
+		$(if $(SUBPAGESIZE),-s $(SUBPAGESIZE)) \
+		$(if $(VID_HDR_OFFSET),-O $(VID_HDR_OFFSET)) \
+		$(UBINIZE_OPTS)
+	rm $@.tmp
+endef
+
 define Build/append-uboot
 	dd if=$(UBOOT_PATH) >> $@
 endef