board/boundary/nitrogen6x/6x_upgrade.txt

   1 setenv stdout serial,vga
   2 echo "check U-Boot" ;
   3 setenv offset 0x400
   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" ;
  12                else
  13                    echo "Need U-Boot upgrade" ;
  14                    echo "Program in 5 seconds" ;
  15                    for n in 5 4 3 2 1 ; do
  16                         echo $n ;
  17                         sleep 1 ;
  18                    done
  19                    echo "erasing" ;
  20                    sf erase 0 0x50000 ;
  21                    # two steps to prevent bricking
  22                    echo "programming" ;
  23                    sf write 0x12000000 $offset $filesize ;
  24                    echo "verifying" ;
  25                    if sf read 0x12400000 $offset $filesize ; then
  26                        if cmp.b 0x12000000 0x12400000 $filesize ; then
  27                            while echo "---- U-Boot upgraded. reset" ; do
  28                                 sleep 120
  29                            done
  30                        else
  31                            echo "Read verification error" ;
  32                        fi
  33                    else
  34                         echo "Error re-reading EEPROM" ;
  35                    fi
  36                fi
  37            else
  38                echo "Error reading boot loader from EEPROM" ;
  39            fi
  40       else
  41            echo "Error initializing EEPROM" ;
  42       fi ;
  43 else
  44      echo "No U-Boot image found on SD card" ;
  45 fi