ramips: introduce TP-Link v1 header OKLI image recipe

It can be used to workaround the booting stuck issue caused by the
u-boot LZMA decompression error.

The new kernel image structure:
+------+------------------+------------------+---------------+-----------------+
| name | tplink-v1 header | OKLI lzma-loader | uImage header | lzma kernel+dtb |
+------+------------------+------------------+---------------+-----------------+
| size |      0x200       |       0xe00      |     0x40      |     dynamic     |
+------+------------------+------------------+---------------+-----------------+

Signed-off-by: Shiji Yang <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/16473
Signed-off-by: Hauke Mehrtens <[email protected]>

target/linux/ramips/image/common-tp-link.mk

@@ -1,6 +1,19 @@
 DEVICE_VARS += TPLINK_FLASHLAYOUT TPLINK_HWID TPLINK_HWREV TPLINK_HWREVADD
 DEVICE_VARS += TPLINK_HVERSION TPLINK_BOARD_ID TPLINK_HEADER_VERSION
 
+define Build/tplink-v1-okli-image
+	cp $(IMAGE_KERNEL) $(IMAGE_ROOTFS).$(word 2,$(1))
+	cat $(IMAGE_ROOTFS) >> $(IMAGE_ROOTFS).$(word 2,$(1))
+	-$(STAGING_DIR_HOST)/bin/mktplinkfw \
+		-H $(TPLINK_HWID) -W $(TPLINK_HWREV) -F $(TPLINK_FLASHLAYOUT) \
+		-N "$(VERSION_DIST)" -V $(REVISION) -m $(TPLINK_HEADER_VERSION) \
+		-k "$(KDIR)/loader-$(word 1,$(1)).$(LOADER_TYPE)" -E $(KERNEL_LOADADDR) \
+		-r $(IMAGE_ROOTFS).$(word 2,$(1)) -o [email protected] -j -X 0x40000 \
+		-a $(call rootfs_align,$(FILESYSTEM)) $(wordlist 3,$(words $(1)),$(1)) \
+		$(if $(findstring sysupgrade,$(word 2,$(1))),-s) && mv [email protected] $@ || rm -f $@
+	rm -f $(IMAGE_ROOTFS).$(word 2,$(1))
+endef
+
 define Build/uImage-tplink-c9
 	mkimage \
 		-A $(LINUX_KARCH) \
@@ -28,6 +41,18 @@ define Device/tplink-v1
 	append-metadata
 endef
 
+define Device/tplink-v1-okli
+  $(Device/tplink-v1)
+  LOADER_TYPE := bin
+  LOADER_FLASH_OFFS := 0x21000
+  COMPILE := loader-$(1).bin
+  COMPILE/loader-$(1).bin := loader-okli-compile | pad-to 64k | lzma | pad-to 3584
+  KERNEL := kernel-bin | append-dtb | lzma | uImage lzma -M 0x4f4b4c49
+  IMAGE/factory.bin := tplink-v1-okli-image $(1) factory -e -O
+  IMAGE/sysupgrade.bin := tplink-v1-okli-image $(1) sysupgrade -e -O | check-size | \
+	append-metadata
+endef
+
 define Device/tplink-v2
   DEVICE_VENDOR := TP-Link
   TPLINK_FLASHLAYOUT :=