[openwrt/openwrt] mediatek: Moved recovery image creation to include/image-commands.mk

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/0e2b7e3bd674d2dd69ed8daf483cac5509cec9f0

commit 0e2b7e3bd674d2dd69ed8daf483cac5509cec9f0
Author: Roland Reinl <reinlroland+github at gmail.com>
AuthorDate: Sat Mar 30 17:59:14 2024 +0100

    mediatek: Moved recovery image creation to include/image-commands.mk
    
    The recovery image is reqired for D-Link M30 as well. So I moved it to include/image-commands.mk to be able to use it for MT7622 and filogic devices.
    
    Signed-off-by: Roland Reinl <reinlroland+github at gmail.com>
---
 include/image-commands.mk             | 37 +++++++++++++++++++++++++++++++++++
 target/linux/mediatek/image/mt7622.mk | 31 ++---------------------------
 2 files changed, 39 insertions(+), 29 deletions(-)

diff --git a/include/image-commands.mk b/include/image-commands.mk
index 79a64f4bc1..832c85ee70 100644
--- a/include/image-commands.mk
+++ b/include/image-commands.mk
@@ -244,6 +244,43 @@ define Build/copy-file
 	cat "$(1)" > "$@"
 endef
 
+# Create a header for a D-Link AI series recovery image and add it at the beginning of the image
+# Currently supported: AQUILA M30, EAGLE M32 and R32
+# Arguments:
+# 1: Start string of the header
+# 2: Firmware version
+# 3: Block start address
+# 4: Block length
+# 5: Device FMID
+define Build/dlink-ai-recovery-header
+	$(eval header_start=$(word 1,$(1)))
+	$(eval firmware_version=$(word 2,$(1)))
+	$(eval block_start=$(word 3,$(1)))
+	$(eval block_length=$(word 4,$(1)))
+	$(eval device_fmid=$(word 5,$(1)))
+# create $@.header without the checksum
+	echo -en "$(header_start)\x00\x00" > "$@.header"
+# Calculate checksum over data area ($@) and append it to the header.
+# The checksum is the 2byte-sum over the whole data area.
+# Every overflow during the checksum calculation must increment the current checksum value by 1.
+	od -v -w2 -tu2 -An --endian little "$@" | awk '{ s+=$$1; } END { s%=65535; printf "%c%c",s%256,s/256; }' >> "$@.header"
+	echo -en "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00" >> "$@.header"
+	echo -en "$(firmware_version)" >> "$@.header"
+# Only one block supported: Erase start/length is identical to data start/length
+	echo -en "$(block_start)$(block_length)$(block_start)$(block_length)" >> "$@.header"
+# Only zeros
+	echo -en "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" >> "$@.header"
+# Last 16 bytes, but without checksum
+	echo -en "\x42\x48\x02\x00\x00\x00\x08\x00\x00\x00\x00\x00" >> "$@.header"
+	echo -en "$(device_fmid)" >> "$@.header"
+# Calculate and append checksum: The checksum must be set so that the 2byte-sum of the whole header is 0.
+# Every overflow during the checksum calculation must increment the current checksum value by 1.
+	od -v -w2 -tu2 -An --endian little "$@.header" | awk '{s+=65535-$$1;}END{s%=65535;printf "%c%c",s%256,s/256;}' >> "$@.header"
+	cat "$@.header" "$@" > "$@.new"
+	mv "$@.new" "$@"
+	rm "$@.header"
+endef
+
 define Build/dlink-sge-image
 	$(STAGING_DIR_HOST)/bin/dlink-sge-image $(1) $@ $@.enc
 	mv $@.enc $@
diff --git a/target/linux/mediatek/image/mt7622.mk b/target/linux/mediatek/image/mt7622.mk
index 096a923457..441e29a1dc 100644
--- a/target/linux/mediatek/image/mt7622.mk
+++ b/target/linux/mediatek/image/mt7622.mk
@@ -52,33 +52,6 @@ define Build/uboot-fit
 	@mv $@.new $@
 endef
 
-# Append header to a D-Link M32/R32 Kernel 1 partition
-define Build/m32-r32-recovery-header-kernel1
-	$(eval header_start=$(word 1,$(1)))
-# create $@.header without the checksum
-	echo -en "$(header_start)\x00\x00" > "$@.header"
-# Calculate checksum over data area ($@) and append it to the header.
-# The checksum is the 2byte-sum over the whole data area.
-# Every overflow during the checksum calculation must increment the current checksum value by 1.
-	od -v -w2 -tu2 -An --endian little "$@" | awk '{ s+=$$1; } END { s%=65535; printf "%c%c",s%256,s/256; }' >> "$@.header"
-	echo -en "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x8D\x57\x30\x0B" >> "$@.header"
-# Byte 0-3: Erase Start 0x002C0000
-# Byte 4-7: Erase Length 0x02D00000
-# Byte 8-11: Data offset: 0x002C0000
-# Byte 12-15: Data Length: 0x02D00000
-	echo -en "\x00\x00\x2C\x00\x00\x00\xD0\x02\x00\x00\x2C\x00\x00\x00\xD0\x02" >> "$@.header"
-# Only zeros
-	echo -en "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" >> "$@.header"
-# Last 16 bytes, but without checksum
-	echo -en "\x42\x48\x02\x00\x00\x00\x08\x00\x00\x00\x00\x00\x60\x6E" >> "$@.header"
-# Calculate and append checksum: The checksum must be set so that the 2byte-sum of the whole header is 0.
-# Every overflow during the checksum calculation must increment the current checksum value by 1.
-	od -v -w2 -tu2 -An --endian little "$@.header" | awk '{s+=65535-$$1;}END{s%=65535;printf "%c%c",s%256,s/256;}' >> "$@.header"
-	cat "$@.header" "$@" > "$@.new"
-	mv "$@.new" "$@"
-	rm "$@.header"
-endef
-
 define Build/mt7622-gpt
 	cp $@ $@.tmp 2>/dev/null || true
 	ptgen -g -o $@.tmp -a 1 -l 1024 \
@@ -210,7 +183,7 @@ define Device/dlink_eagle-pro-ai-m32-a1
   $(Device/dlink_eagle-pro-ai-ax3200-a1)
   DEVICE_MODEL := EAGLE PRO AI M32
   DEVICE_DTS := mt7622-dlink-eagle-pro-ai-m32-a1
-  IMAGE/recovery.bin := append-kernel | pad-to $$(KERNEL_SIZE) | append-ubi | pad-to $$(IMAGE_SIZE) | m32-r32-recovery-header-kernel1 DLK6E6010001
+  IMAGE/recovery.bin := append-kernel | pad-to $$(KERNEL_SIZE) | append-ubi | pad-to $$(IMAGE_SIZE) | dlink-ai-recovery-header DLK6E6010001 \x8D\x57\x30\x0B \x00\x00\x2C\x00 \x00\x00\xD0\x02 \x60\x6E
 endef
 TARGET_DEVICES += dlink_eagle-pro-ai-m32-a1
 
@@ -218,7 +191,7 @@ define Device/dlink_eagle-pro-ai-r32-a1
   $(Device/dlink_eagle-pro-ai-ax3200-a1)
   DEVICE_MODEL := EAGLE PRO AI R32
   DEVICE_DTS := mt7622-dlink-eagle-pro-ai-r32-a1
-  IMAGE/recovery.bin := append-kernel | pad-to $$(KERNEL_SIZE) | append-ubi | pad-to $$(IMAGE_SIZE) | m32-r32-recovery-header-kernel1 DLK6E6015001
+  IMAGE/recovery.bin := append-kernel | pad-to $$(KERNEL_SIZE) | append-ubi | pad-to $$(IMAGE_SIZE) | dlink-ai-recovery-header DLK6E6015001 \x8D\x57\x30\x0B \x00\x00\x2C\x00 \x00\x00\xD0\x02 \x60\x6E
 endef
 TARGET_DEVICES += dlink_eagle-pro-ai-r32-a1