am335x prebuilt uImage and compiled uImage

Hi Jay,

The difference is just in the header section. The uImage is created from the zImage using the mkimage tool. Here is how it is used:

→ mkimage --help
Usage: mkimage -l image
          -l ==> list image header information
       mkimage [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image
          -A ==> set architecture to 'arch'
          -O ==> set operating system to 'os'
          -T ==> set image type to 'type'
          -C ==> set compression type 'comp'
          -a ==> set load address to 'addr' (hex)
          -e ==> set entry point to 'ep' (hex)
          -n ==> set image name to 'name'
          -d ==> use image data from 'datafile'
          -x ==> set XIP (execute in place)
       mkimage [-D dtc_options] -f fit-image.its fit-image
       mkimage -V ==> print version information and exit

The argument you pass after "-n" is usually the name and version of the image. Example:

$ mkimage -A arm -O linux -T kernel -C none -a 0x80008000 -e 0x80008000 -n 'Linux-3.0.31' -d arch/arm/boot/zImage arch/arm/boot/uImage

This means that most probably the guys from the Arago project prebuilt their image by hand, passing "Arago/3.2.0-psp05.06.00.00/am335" as its name.

Regarding your second question: the last argument you pass to the mkimage tool is the output filename. It may be whatever you wish. I hope this answers your question.

Best regards,
Miroslav