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mediatek: make emmc image generation work on mt7622

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Signed-off-by: John Crispin <john@phrozen.org>
This commit is contained in:
John Crispin 2020-06-04 14:23:07 +02:00
parent 127ad76311
commit 55b97b6885
2 changed files with 20 additions and 1 deletions
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2
target/linux/mediatek/image/Makefile
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@ -12,7 +12,7 @@ define Build/sysupgrade-emmc
rm -f $@.recovery
mkfs.fat -C $@.recovery 3070
./gen_mt7623_emmc_img.sh $@ \
./gen_$(SUBTARGET)_emmc_img.sh $@ \
$(IMAGE_KERNEL) \
$@.recovery \
$(IMAGE_ROOTFS)

19
target/linux/mediatek/image/gen_mt7622_emmc_img.sh Executable file
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@ -0,0 +1,19 @@
#!/bin/sh
OUTPUT_FILE=$1
KERNEL_FILE=$2
RECOVERY_FILE=$3
ROOTFS_FILE=$4
BS=512
#RECOVERY_OFFSET= kernel size / BS = 20M / 512 (blocks)
RECOVERY_OFFSET=40960
#ROOTFS_OFFSET = RECOVERY_OFFSET + (RECOVERY_SIZE / BS)
# = 40960 + (10M / 512) (blocks)
ROOTFS_OFFSET=61440
dd bs="$BS" of="$OUTPUT_FILE" if="$KERNEL_FILE"
dd bs="$BS" of="$OUTPUT_FILE" if="$RECOVERY_FILE" seek="$RECOVERY_OFFSET"
dd bs="$BS" of="$OUTPUT_FILE" if="$ROOTFS_FILE" seek="$ROOTFS_OFFSET"
dd if=/dev/zero of="$OUTPUT_FILE" bs=128k count=1 oflag=append conv=notrunc