2021-12-18 20:56:45 +00:00
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#!/bin/bash +ex
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dd if=/dev/zero of=build/rpi.img bs=1M count=4096
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# Copy the first 8k from the original rpi.img, which seems to have
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2021-12-20 02:17:33 +00:00
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# non-zeroed content. Without this, the Pi doesn't seem to boot.
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# It could be that there is the binary boot blob for the GPU
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# in that section?
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dd if=rpi.img of=build/rpi.img bs=8192 count=1 conv=notrunc
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2021-12-18 20:56:45 +00:00
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sudo losetup -Pf build/rpi.img
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# Partition:
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# start: 8192, size 256M typ W95 FAT32
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DEVICE=$(losetup -j build/rpi.img | cut -d ':' -f 1)
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2021-12-20 02:17:33 +00:00
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parted --script "${DEVICE}" \
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rm 2 \
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mkpart primary ext4 272629760B 4022337536B
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2021-12-18 20:56:45 +00:00
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mkfs.vfat "${DEVICE}p1"
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mkfs.ext4 "${DEVICE}p2"
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TMP=$(mktemp -d)
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mount "${DEVICE}p1" "$TMP"
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tar -C "$TMP" -xf build/all.tar --strip=1 boot/
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umount "$TMP"
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mount "${DEVICE}p2" "$TMP"
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tar -C "$TMP" -xf build/all.tar --exclude='boot/*'
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umount "$TMP"
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losetup -D "${DEVICE}"
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rm -rf "$TMP"
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