[coreboot] [PATCH] Factor out ROM size calculation from Config.lb

[Myles Watson]

> -----Original Message-----
> From: ron minnich [mailto:rminnich at gmail.com]
> Sent: Monday, April 20, 2009 5:33 PM
> To: Carl-Daniel Hailfinger
> Cc: Myles Watson; Coreboot
> Subject: Re: [coreboot] [PATCH] Factor out ROM size calculation from
> Config.lb
> 
> so send me a Config.lb fragment that tickles the bug and I'll look

Just delete the 

if USE_FALLBACK_IMAGE
end

from the end of the include file.  It'll break.

>> +
>> +## This is needed to work around a parser bug.
>> +if USE_FALLBACK_IMAGE
>> +end
>> +
>>     
> INSTANCE 0
> INCLUDE config/nofailovercalculation.lb
> Trying to find one of NUM, HEX_PREFIX, ID, "\\(", "!" on line 34:
>   
>>  ^
>>     
> List of nearby tokens:
>   (@945)  NUM  =  '1024'
>   (@950)  DEFAULT  =  'default'
>   (@958)  ID  =  'XIP_ROM_BASE'
>   (@971)  EQ  =  '='
>   (@973)  ID  =  '_ROMBASE'
>   (@982)  "-"  =  '-'
>   (@984)  ID  =  'XIP_ROM_SIZE'
>   (@997)  "[+]"  =  '+'
>   (@999)  ID  =  'ROM_IMAGE_SIZE'
>   (@1014)  "||"  =  ''
> ===> ERROR: Could not parse file
> tyan/s2892/Config.lb:0
>
> I don't know why the parser is matching blank space with "||"

The reason I included this snippet is because I removed it so I could see
what the parser bug was.  It looks like it expects the expression to
continue if it doesn't find an if.  For some reason it matches the empty
string with "||" and looks for the next piece of the expression.  I took out
the || rule and that also solves the problem.  "&&" didn't match the empty
string.

Thanks,
Myles