Clayton Craft
557772ebd4
This also sneaks in a change to add 'quiet' on the kernel cmdline, to remove some kernel msg noise on the screen that overwrites the splash sometimes on boot. Signed-off-by: Clayton Craft <craftyguy@postmarketos.org> Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/7112>
87 lines
2.8 KiB
Bash
87 lines
2.8 KiB
Bash
#!/bin/sh
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IMAGE_PATH="$1"
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if [ ! -f "$IMAGE_PATH" ]; then
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echo "ERROR: No image given!"
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exit 1
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fi
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# Find ESP on local device, which should have the stage 2 bootloader that
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# started this current session, then use that to locate the local storage device
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# containing this ESP. If we're not installing to this device then throw an
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# error.
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ESP_UUID=$(cat /proc/device-tree/chosen/asahi,efi-system-partition)
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ESP_PART_DEV=$(readlink -f "/dev/disk/by-partuuid/$ESP_UUID")
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ESP_PART_NAME=$(basename "$ESP_PART_DEV")
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LOCAL_DEVICE="/dev/$(basename "$(readlink -f "/sys/class/block/$ESP_PART_NAME/..")")"
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if [ -z "$LOCAL_DEVICE" ]; then
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echo "ERROR: unable to find boot device!"
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exit 1
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fi
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# Check if installing to local device with stage2 ESP
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if [ "$LOCAL_DEVICE" != "$OSI_DEVICE_PATH" ]; then
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echo "ERROR: This currently only supports installing to local storage ($LOCAL_DEVICE), selected device: $OSI_DEVICE_PATH"
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exit 1
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fi
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cleanup() {
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# Unmount ESP and image ESP if mounted
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if mountpoint -q /mnt/esp 2>/dev/null; then
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doas umount /mnt/esp
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fi
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if mountpoint -q /mnt/image-esp 2>/dev/null; then
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doas umount /mnt/image-esp
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fi
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# Detach loop device
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if [ -n "$LOOP_DEV" ] && [ -e "$LOOP_DEV" ]; then
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doas losetup -d "$LOOP_DEV"
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fi
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}
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trap cleanup EXIT INT TERM
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# Set up loop device to access image partitions
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LOOP_DEV=$(doas losetup --find --show --partscan "$IMAGE_PATH")
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# TODO: Don't hardcode partition layout assumptions
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# Currently assuming: p1=ESP/boot, p2=root partition
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IMG_ESP_PART="${LOOP_DEV}p1"
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IMG_ROOT_PART="${LOOP_DEV}p2"
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# The ESP's filesystem UUID won't match the UUID in the image's fstab, so let's
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# set the ESP's filesystem UUID to the UUID of the image's ESP. This saves us
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# from having to mount (and optionally decrypt) the image's rootfs to change
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# fstab...
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IMG_ESP_UUID=$(doas blkid -s UUID -o value "$IMG_ESP_PART")
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if [ -z "$IMG_ESP_UUID" ]; then
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echo "ERROR: Could not get ESP UUID from image!"
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exit 1
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fi
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# The FAT32 UUID is actually the ID for the volume.
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# Convert FAT32 UUID format (1234-5678) to 8-digit hex vol. ID (12345678)
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IMG_ESP_VOL_ID=$(echo "$IMG_ESP_UUID" | tr -d '-')
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echo "Setting target ESP serial to match image: $IMG_ESP_VOL_ID"
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doas fatlabel -i "$ESP_PART_DEV" "$IMG_ESP_VOL_ID"
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# Generate repart config and use CopyBlocks for block-level copy, which should
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# preserve filesystem UUID, and (optional) luks
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doas mkdir -p /run/repart.d
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doas tee /run/repart.d/70-pmos-root.conf > /dev/null <<EOF
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[Partition]
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Type=root
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CopyBlocks=${IMG_ROOT_PART}
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SizeMinBytes=5G
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EOF
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# Create the rootfs on target device
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doas systemd-repart --dry-run=no "$OSI_DEVICE_PATH"
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# Mount ESP partitions and copy contents
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doas mkdir -p /mnt/esp /mnt/image-esp
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doas mount "$ESP_PART_DEV" /mnt/esp
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doas mount "$IMG_ESP_PART" /mnt/image-esp
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doas cp -a /mnt/image-esp/* /mnt/esp/
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