[U-Boot-Users] really really tiny code
wd at denx.de
Wed Jan 26 10:35:01 CET 2005
In message <1106684792.3804b95cnishant.subs at myrealbox.com> you wrote:
> I want to write a really tiny program - just init core, MMU and stop.
> Preferably, (if possible) I would like to start out with a blank file,
> type in the code, and give the compile command at the good old command prom=
> Is it possible? If yes, can anyone please tell me the command?
Yes, it is poossible. You will need more than one command, at least
"vi" and "ppc_82xx-gcc".
> Would any other files (.lds, etc) be necessary? What else will be required?
Yes, you will most probably need a linker script.
One of the most important requirements is an in-depth understanding
of your hardware environment and how to write software for it.
> I need a micro development environment like this from where I can do all
> my work out of the cosy little (really limited, I know) DPRAM, and try
> out some experiments with the processor's registers and config.
> I might even be adventurous and try initializing the ports and
> glowing some LEDs :-)
> What do I do? How do I proceed? Please help.
U-Boot includes all the init stuff you will probably re-0invent, so
feel free to copy and re-use this code (and make your program
available under GPL), but please understand that you are on your own
with such a project.
Sorry, but this is off topic here.
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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