[U-Boot] Standalone API examples on the P4080DS

Peter Tyser ptyser at xes-inc.com
Fri Jan 16 18:08:01 CET 2015


Hi David,


> It looks like the entry point is 0x40000. Why does the tutorial state
> that the example needs to be run from a 4 byte offset? In this case 
> this
> will result in a failure to create a stack frame for hello_world.

For PowerPC the entry point used to be non-deterministic, but was 
generally 0x40004 which is where the wiki value came from.  The 
following 2 patches made the entry point consistently 0x40000:

http://git.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=commit;h=620bbba524fbaa26971a5004793010b169824f1b

http://git.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=commit;h=c91d456c055237bdadb99a80e198748b8cf32595

I updated the wiki to match the newer 0x40000 address, which is valid 
for PowerPC boards with a comment to check out 
CONFIG_STANDALONE_LOAD_ADDR for other architectures.

Peter


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