###########################################

part start mmc ${devnum} 9 mmc_env
mmc dev ${devnum}
setenv loadbootstate " \
    echo 'loading env...'; \
    mmc read ${ramdisk_addr_r} ${mmc_env} 0x10; \
    env import -c ${ramdisk_addr_r} 0x2000;"

setenv storebootstate " \
    echo 'storing env...'; \
    env export -c -s 0x2000 ${ramdisk_addr_r} BOOT_ORDER BOOT_A_LEFT BOOT_B_LEFT MACHINE_ID; \
    mmc write ${ramdisk_addr_r} ${mmc_env} 0x10;"

run loadbootstate
test -n "${BOOT_ORDER}" || setenv BOOT_ORDER "A B"
test -n "${BOOT_A_LEFT}" || setenv BOOT_A_LEFT 3
test -n "${BOOT_B_LEFT}" || setenv BOOT_B_LEFT 3

# HassOS bootargs
setenv bootargs_hassos "zram.enabled=1 zram.num_devices=3 apparmor=1 security=apparmor systemd.machine_id=${MACHINE_ID} cgroup_enable=memory fsck.repair=yes"

# HassOS system A/B
setenv bootargs_a "root=PARTUUID=48617373-06 rootfstype=squashfs ro rootwait"
setenv bootargs_b "root=PARTUUID=48617373-08 rootfstype=squashfs ro rootwait"

# Load environment from haos-config.txt
if test -e mmc ${devnum}:1 haos-config.txt; then
  fatload mmc ${devnum}:1 ${ramdisk_addr_r} haos-config.txt
  env import -t ${ramdisk_addr_r} ${filesize}
fi

# Load extraargs
fileenv mmc ${devnum}:1 ${ramdisk_addr_r} cmdline.txt cmdline

# Load device tree
setenv fdtfile "meson-g12b-s922x-khadas-vim3.dtb"
echo "Loading standard device tree ${fdtfile}"
fatload mmc ${devnum}:1 ${fdt_addr_r} ${fdtfile}
fdt addr ${fdt_addr_r}

# load dt overlays
fdt resize 65536
for overlay_file in ${overlays}; do
  if fatload mmc ${devnum}:1 ${ramdisk_addr_r} overlays/${overlay_file}.dtbo; then
    echo "Applying kernel provided DT overlay ${overlay_file}.dtbo"
    fdt apply ${ramdisk_addr_r} || setenv overlay_error "true"
  fi
done
if test "${overlay_error}" = "true"; then
  echo "Error applying DT overlays, restoring original DT"
  fatload mmc ${devnum}:1 ${fdt_addr_r} ${fdtfile}
fi

# logical volumes get numbered after physical ones.
# 1. boot
# 2. Extended partition
# 3. Overlay
# 4. Data
# 5. KernelA
# 6. SystemA
# 7. KernelB
# 8. SystemB
# 9. BootInfo
setenv bootargs
for BOOT_SLOT in "${BOOT_ORDER}"; do
  if test "x${bootargs}" != "x"; then
    # skip remaining slots
  elif test "x${BOOT_SLOT}" = "xA"; then
    if test ${BOOT_A_LEFT} -gt 0; then
      setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1
      echo "Trying to boot slot A, ${BOOT_A_LEFT} attempts remaining. Loading kernel ..."
      if load mmc ${devnum}:5 ${kernel_addr_r} Image; then
          setenv bootargs "${bootargs_hassos} ${bootargs_a} rauc.slot=A ${cmdline}"
      fi
    fi
  elif test "x${BOOT_SLOT}" = "xB"; then
    if test ${BOOT_B_LEFT} -gt 0; then
      setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1
      echo "Trying to boot slot B, ${BOOT_B_LEFT} attempts remaining. Loading kernel ..."
      if load mmc ${devnum}:7 ${kernel_addr_r} Image; then
          setenv bootargs "${bootargs_hassos} ${bootargs_b} rauc.slot=B ${cmdline}"
      fi
    fi
  fi
done

if test -n "${bootargs}"; then
  run storebootstate
else
  echo "No valid slot found, resetting tries to 3"
  setenv BOOT_A_LEFT 3
  setenv BOOT_B_LEFT 3
  run storebootstate
  reset
fi

printenv bootargs
echo "Starting kernel"
booti ${kernel_addr_r} - ${fdt_addr_r}

echo "Boot failed, resetting..."
reset