olpc.fth

[Jerry Vonau]

On Fri, 2011-02-04 at 10:16 +1100, James Cameron wrote:
> On Thu, Feb 03, 2011 at 03:16:43PM -0600, Jerry Vonau wrote:
> > Just a quick question is it possible to run commands that are
> > available at OFW prompt inside the olpc.fth file? I'm looking at
> > trying to run add-tag-from-file from within olpc.fth. 
> 
> Yes, certainly, provided the laptop is not secured.
> 
> For example:
> 
> \ olpc.fth
> visible
> sound-end
> add-tag xx yy
> 
> Without visible you won't see output.
> 
> Without sound-end the asynchronous startup sound may retrigger during
> the process.
> 
> For example:
> 
> \ olpc.fth
> visible
> sound-end
> : quozl  " add-tag-from-file xx u:\xx" eval ;
> quozl
> 
> With add-tag-from-file the input file descriptor being used by
> OpenFirmware to maintain interpretor position in the olpc.fth file ...
> is overwritten, which is why this example and the newkatag.fth you found
> define a word and then execute it as the last line.
> 
> I've tested the above scripts.
> 
> Write your script to test for the tag being added.
> 
> On XO-1.5, if you have multiple tags to add, you might avoid restart on
> each, see the source
> 
> http://tracker.coreboot.org/trac/openfirmware/browser/cpu/x86/pc/olpc/via/initsmt.fth
> 
> for a method that might be used in manufacturing.  I've not tested this.
> 

Thanks a bunch,

Jerry