AutomaticUpdates < U-Bootdoc

%SECTION0{NAME=AutomaticUpdates}% Automatic Updates

   Problem:: Distribute Software Updates to customers <br>
   Solution:: use cheap standard media like USB memory sticks <br>
   Implementation:: &nbsp;
   * Keep BOM (Versions, Timestamps etc.) in persistent memory (EEPROM etc.)
   * When booting, check whether a USB memory stick is plugged in.
   * If one is found:
      1 If =prepare.img= is found load it into memory. <br>
        If it is valid then run it (always).
      1 If =preinst.img= is found load it into memory. <br>
        If it is valid then run it. Update the EEPROM.
      1 If =firmware.img= is found load it into memory. <br>
        If it is valid, burn it into FLASH and update the EEPROM.
      1 If =kernel.img= is found load it into memory. <br>
        If it is valid, burn it into FLASH and update the EEPROM.
      1 If =app.img= is found load it into memory. <br>
        If it is valid, burn it into FLASH and update the EEPROM.
      1 If =disk.img= is found load it into memory. <br>
        If it is valid, burn it into FLASH and update the EEPROM.
      1 If =postinst.img= is found load it into memory. <br>
        If it is valid then run it. Update the EEPROM.
1.12.3. Keyboard Support		1. Abstract		1.13. Resources, Summary
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