board/czechlight/clearfog/boot.scr.txt

test -n "${BOOT_A_LEFT}" || setenv BOOT_A_LEFT 3
test -n "${BOOT_B_LEFT}" || setenv BOOT_B_LEFT 3

setenv rauc_part

for BOOT_SLOT in "A B"; do
  if test "x${rauc_part}" != "x"; then
    # skip remaining slots
  elif test "x${BOOT_SLOT}" = "xA"; then
    if test ${BOOT_A_LEFT} -gt 0; then
      setexpr BOOT_A_LEFT ${BOOT_A_LEFT} - 1
      echo "Found valid slot A, ${BOOT_A_LEFT} attempts remaining"
      setenv rauc_part 2
      setenv rauc_slot A
    fi
  elif test "x${BOOT_SLOT}" = "xB"; then
    if test ${BOOT_B_LEFT} -gt 0; then
      setexpr BOOT_B_LEFT ${BOOT_B_LEFT} - 1
      echo "Found valid slot B, ${BOOT_B_LEFT} attempts remaining"
      setenv rauc_part 3
      setenv rauc_slot B
    fi
  fi
done

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

load mmc 0:${rauc_part} ${fdt_addr_r} /boot/armada-388-clearfog-base.dtb
load mmc 0:${rauc_part} ${kernel_addr_r} /boot/zImage
setenv bootargs root=/dev/mmcblk0p${rauc_part} rauc.slot=${rauc_slot} czechlight=${czechlight}
bootz ${kernel_addr_r} - ${fdt_addr_r}