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+Factory-configured DreamPlugs need their internal u-boot firmware updated and
+re-configured to boot from the SD card.
+You may want to remove the internal microSD card for the sake of simplicity.
+This will result in u-boot and linux boot warnings, but these can be ignored.
+The desired u-boot configuration is:
+ baudrate=115200
+ bootargs=console=ttyS0,115200 root=/dev/sdb2 rootdelay=10
+ bootcmd=${x_bootcmd_usb}; ${x_bootcmd_kernel}; ${x_bootcmd_initrd}; setenv bootargs ${x_bootargs} ${x_bootargs_root}; bootm 0x6400000 0x6900000;
+ x_bootargs=console=ttyS0,115200
+ x_bootargs_root=root=/dev/sdb2 rootdelay=10
+ x_bootcmd_initrd=fatload usb 1:1 0x6900000 uInitrd
+ x_bootcmd_kernel=fatload usb 1:1 0x6400000 uImage
+ x_bootcmd_usb=usb start
+HOWTO: flash and configure u-boot
+The default SD card images include the u-boot firmware required to boot from
+the card. Insert a flashed SD card into the DreamPlug and connect with screen:
+ $ screen /dev/ttyUSB0 115200
+Power up the DreamPlug and quickly press enter in the screen session to
+interrupt boot. Then enter the following commands into the running u-boot
+session (change the last argument of the 'sf write' line, in hex, if the .kwb
+file size changes from exactly 196076 bytes):
+ usb start
+ fatload usb 1 0x6400000 uboot.2012.04.01-2_armel.kwb
+ sf probe 0
+ sf erase 0x0 0x80000
+ sf write 0x6400000 0x0 0x2fdec
+ setenv baudrate 115200
+ setenv bootcmd '${x_bootcmd_usb}; ${x_bootcmd_kernel}; ${x_bootcmd_initrd}; setenv bootargs ${x_bootargs} ${x_bootargs_root} ${x_bootargs_console}; bootm 0x6400000 0x6900000;'
+ setenv x_bootargs_console 'ttyS0,115200'
+ setenv x_bootargs_root 'root=/dev/sdb2 rootdelay=10'
+ setenv x_bootcmd_initrd 'fatload usb 1:1 0x6900000 uInitrd'
+ setenv x_bootcmd_kernel 'fatload usb 1:1 0x6400000 uImage'
+ setenv x_bootcmd_usb 'usb start'
+ saveenv
+ reset