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|
#!/bin/sh -e
# Copyright 2020 Oliver Smith, Undef
# SPDX-License-Identifier: GPL-3.0-or-later
# Modified from https://gitlab.com/postmarketOS/postmarketos-ondev/-/blob/master/ondev-prepare-internal-storage.sh
# Sanity check
part_install="$(df -T / | awk '/^\/dev/ {print $1}')"
installer_part="$(realpath /dev/disk/by-label/installer)"
if [ "$installer_part" != "$part_install" ]; then
echo "ERROR: Unexpected installer partition; installer is not" \
"running from detected partition. Bailing!"
echo "This situation typically arises when the installer image" \
"exists on both embedded and removable storage."
echo "(installer_part: '$installer_part')"
echo "(part_install: '$part_install')"
exit 1
fi
echo " === prepare-internal-storage === "
set -x
dev=${INTERNAL_TARGET}
dev_boot=""
dev_root=""
boot_filesystem="ext4"
mb_boot_part_start="8"
mb_boot="512"
# Create partition table
partitions_create() {
parted -s "${dev}" mktable gpt
# Boot Partition
parted -s "${dev}" mkpart primary "${boot_filesystem}" \
"${mb_boot_part_start}M" "${mb_boot}M"
# Root Partition
parted -s "${dev}" mkpart primary "${mb_boot}M" "100%"
parted -s "${dev}" set 1 boot on
if grep -q "purism,librem5" /proc/device-tree/compatible; then
# This ensures that /dev/disk/by-partlabel/u-boot points to the installer
partprobe "${dev}"
# Retrieve u-boot from the current dedicated partition
dd if=/dev/disk/by-partlabel/u-boot of=/tmp/u-boot-librem5.imx
# We use parted for adding a "protective" partition for u-boot:
# * mkpart u-boot 66s ${BOOTSTART}: create "u-boot" partition from sector 66
# (33KiB) up to the start of the `/boot`
# partition
# * toggle 3 hidden: set flag "hidden" on partition 3 (the one we just created)
parted -s "${dev}" mkpart u-boot 66s "${mb_boot_part_start}M"
parted -s "${dev}" toggle 3 hidden
# Write u-boot to the this protective partition by skipping the first 33KiB of the disk
partprobe "${dev}"
if [ -e "${dev}p3" ]; then
uboot_part="${dev}p3"
else
uboot_part="${dev}3"
fi
dd if=/tmp/u-boot-librem5.imx of="${uboot_part}"
fi
partprobe "${dev}"
}
# Try to find the boot and root partitions for 10 seconds
partitions_find() {
for i in $(seq 1 100); do
if [ -e "${dev}p1" ] && [ -e "${dev}p2" ]; then
dev_boot="${dev}p1"
dev_root="${dev}p2"
return
elif [ -e "${dev}1" ] && [ -e "${dev}2" ]; then
dev_boot="${dev}1"
dev_root="${dev}2"
return
fi
sleep 0.1
done
echo "Failed to find boot and root partition after creating" \
"partition table (dev: '$dev')"
exit 1
}
# Configure the GPT Discoverable Partition GUIDs. See
# https://uapi-group.org/specifications/specs/discoverable_partitions_specification/
# for more information.
configure_dps_labels() {
case "$(uname -m)" in
x86_64)
part_type_root="4f68bce3-e8cd-4db1-96e7-fbcaf984b709"
;;
aarch64)
part_type_root="b921b045-1df0-41c3-af44-4c6f280d3fae"
;;
riscv64)
part_type_root="72ec70a6-cf74-40e6-bd49-4bda08e8f224"
;;
armhf)
part_type_root="69dad710-2ce4-4e3c-b16c-21a1d49abed3"
;;
esac
sfdisk --part-type "${dev}" 2 "${part_type_root}"
}
# Format the boot partition
boot_format() {
mkfs.ext4 -F -q -L boot "${dev_boot}"
}
# Copy the boot partition contents from /boot
boot_copy() {
local target_path="/mnt/install-boot"
local source_path="/boot"
mkdir -p "${target_path}"
mount "${dev_boot}" "${target_path}"
cp -a -r "${source_path}"/* "${target_path}"
umount "${target_path}"
}
partitions_create
partitions_find
configure_dps_labels
boot_format
boot_copy
|
