Read files in u-boot

Question

How can I read the file which is located on boot partition in u-boot? I can use fatload to read this file to ram but how then I can read it? I can write some additional command by u-boot makro U_BOOT_CMD but don't know how to use emmc and file there.

Answer 1

You could probably use a two steps approach, this would avoid using emmc specific code in your u-boot custom command:

1. loading the file into memory,
2. use a custom u-boot command for reading it from memory.

For example:

fatload mmc 0 0x3000000 file.bin
m4xell 0x3000000

Your custom m4xell u-boot command would then be able to access the file content at 0x3000000.