[U-Boot-Users] simplify bootm command

[Jerry Van Baren]

Wolfgang Denk wrote:
>> One minor flaw, I don't see how "bootm" the env script could run "bootm" 
>> the built-in command, because it would instead recursively run "bootm" 
>> the env script if scripts have higher priority and the command line 
>> "bootm" would run the built-in "bootm" if scripts have lower priority. 
> 
> That's why I think we should have an explicit "builtin" command, i. e.
> command with the name "builtin" that will always run the corresponding
> builtin command, no if there is a "command alias" or not - similar to
> the bash command:

Ahh, I missed the point that "builtin" was a command, not a concept. 
Yes, that solves the dilemma neatly.

WRT Albert's comment:
> ... and make sure that one can *never* define an environment variable 
> called 'builtin', and even remove any such definition if found in the 
> environment when reading it from persistent memory at boot.

...another way of handling this would be to special-case the "builtin" 
command so that it takes precedence over a "builtin" env variable (i.e. 
ignore an env variable named "builtin").  I'm not wild about 
auto-deleting env variables.

Best regards,
gvb