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diff --git a/tools/mk_envimg/README b/tools/mk_envimg/README new file mode 100644 index 000000000..97406ab14 --- /dev/null +++ b/tools/mk_envimg/README @@ -0,0 +1,30 @@ + +This is a small tool that creates an environment image for U-boot. +It can be compiled both as a part of U-boot (using host compiler) and +stand alone. The tool is intended to run on the host and not the target. + +Syntax: +./mk_envimg [-d] output_file [input_file] + +When invoking the program, input arguments can be specified. +* -d : debug mode, adds debug printouts +* output_file : specify the name and location of the outpout +* input_file : input configuration file (optional) + +The output file is an ordinary environment binary with a crc32 sum +followed by the environment variables + +By default this tool will create an image with the default environment +variables as built-in in U-boot. +If an input file is specified it will remove, modify and/or remove +default environment variables. + +Input file examples: +* Add a new variable: +an_new_variable=a_new_value + +* Remove the variable bootargs +bootargs + +* Modify the variable bootargs +bootargs=a_new_value
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