20 lines
546 B
Bash
20 lines
546 B
Bash
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#!/bin/sh
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OUTPUT_FILE=$1
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KERNEL_FILE=$2
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RECOVERY_FILE=$3
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ROOTFS_FILE=$4
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BS=512
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#RECOVERY_OFFSET= kernel size / BS = 20M / 512 (blocks)
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RECOVERY_OFFSET=40960
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#ROOTFS_OFFSET = RECOVERY_OFFSET + (RECOVERY_SIZE / BS)
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# = 40960 + (10M / 512) (blocks)
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ROOTFS_OFFSET=61440
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dd bs="$BS" of="$OUTPUT_FILE" if="$KERNEL_FILE"
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dd bs="$BS" of="$OUTPUT_FILE" if="$RECOVERY_FILE" seek="$RECOVERY_OFFSET"
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dd bs="$BS" of="$OUTPUT_FILE" if="$ROOTFS_FILE" seek="$ROOTFS_OFFSET"
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dd if=/dev/zero of="$OUTPUT_FILE" bs=128k count=1 oflag=append conv=notrunc
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