1 setenv stdout serial,vga
4 if ${fs}load ${dtype} ${disk}:1 12000000 u-boot.imx || ${fs}load ${dtype} ${disk}:1 12000000 u-boot.nopadding ; then
5 echo "read $filesize bytes from SD card" ;
6 if sf probe || sf probe || \
7 sf probe 1 27000000 || sf probe 1 27000000 ; then
8 echo "probed SPI ROM" ;
9 if sf read 0x12400000 $offset $filesize ; then
10 if cmp.b 0x12000000 0x12400000 $filesize ; then
11 echo "------- U-Boot versions match" ;
13 echo "Need U-Boot upgrade" ;
14 echo "Program in 5 seconds" ;
15 for n in 5 4 3 2 1 ; do
21 # two steps to prevent bricking
23 sf write 0x12000000 $offset $filesize ;
25 if sf read 0x12400000 $offset $filesize ; then
26 if cmp.b 0x12000000 0x12400000 $filesize ; then
27 while echo "---- U-Boot upgraded. reset" ; do
31 echo "Read verification error" ;
34 echo "Error re-reading EEPROM" ;
38 echo "Error reading boot loader from EEPROM" ;
41 echo "Error initializing EEPROM" ;
44 echo "No U-Boot image found on SD card" ;