[syslinux] PXELinux and serial number

[H. Peter Anvin]

Scott Mewett wrote:
> 
> Since there is only the serial number that we are looking for, being
> able to read all the table structures would not be necessary.
> 
> What do you think?
> 

Doesn't look too bad.  Find the _DMI_ header in the BIOS ROM area, then 
it's just a linked list of tables, and the serial number is in table 1. 
  Get the index, and scan past the requisite number of nulls, to find 
the appropriate string; if there is no _DMI_ header, if table 1 doesn't 
exist or is less than 8 bytes long, the string number is zero, or 
finding double-null during the scan is an error, meaning no data is 
available.

This should be doable.

	-hpa