#!/usr/bin/env bash
source "$(dirname -- "${BASH_SOURCE[0]}")/lib.sh"
[[ $# == 0 ]] || die 'Usage: tools/prepare-vm'
use_xbps
check_void_pin
need mkfs.ext4
cd "$FDS_ROOT"
source config/vm-test.conf
mkdir -p .host/vm-input/{var/db/xbps/keys,config} out/cache/vm out/vm-kernel
cp "$FDS_VOID/common/repo-keys/"*.plist .host/vm-input/var/db/xbps/keys/
package="out/cache/vm/$VM_KERNEL_PACKAGE-$VM_KERNEL_VERSION.aarch64.xbps"
if [[ ! -f $package ]]; then
    [[ ${FDS_OFFLINE:-0} != 1 ]] || die "Missing offline VM kernel: $package"
    XBPS_ARCH=aarch64 xbps-install -r "$FDS_ROOT/.host/vm-input" \
        -C "$FDS_ROOT/.host/vm-input/config" -c "$FDS_ROOT/out/cache/vm" \
        -i -R "$VM_REPOSITORY" -SyD "$VM_KERNEL_PACKAGE-$VM_KERNEL_VERSION"
fi
printf '%s  %s\n' "$VM_KERNEL_SHA256" "$package" | sha256sum -c -
tar -xf "$package" -C out/vm-kernel ./boot
[[ -s out/vm-kernel/boot/vmlinux-$VM_KERNEL_VERSION ]] || die 'Missing VM kernel image'
for symbol in CONFIG_SATA_AHCI CONFIG_EXT4_FS CONFIG_SERIAL_AMBA_PL011_CONSOLE CONFIG_PCI_HOST_GENERIC CONFIG_DEVTMPFS_MOUNT; do
    grep -qx "$symbol=y" "out/vm-kernel/boot/config-$VM_KERNEL_VERSION" || die "VM kernel needs built-in $symbol"
done
printf 'PASS: signed, pinned generic ARM test kernel prepared\n'