echo CzechLight BeagleBone Black RAUC

test -n "${BOOT_A_LEFT}" || setenv BOOT_A_LEFT 3;
test -n "${BOOT_B_LEFT}" || setenv BOOT_B_LEFT 3;
test -n "${BOOT_ORDER}" || setenv BOOT_ORDER "A B";
for BOOT_SLOT in "${BOOT_ORDER}"; do
  if test "x${rauc_part}" != "x"; then
    ;
  elif test "x${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, ${BOOT_A_LEFT} attempts remaining";
      rauc_part=2;
      rauc_slot=A;
    fi;
  elif test "x${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, ${BOOT_B_LEFT} attempts remaining";
      rauc_part=4;
      rauc_slot=B;
    fi;
  fi;
done;
if test -n "${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} ${scriptaddr} /boot/boot.scr || reset;
source ${scriptaddr} || reset;