[openfirmware] r1088 - cpu/x86/pc/olpc

[svn at openfirmware.info]

Author: wmb
Date: 2009-01-28 18:20:10 +0100 (Wed, 28 Jan 2009)
New Revision: 1088

Modified:
   cpu/x86/pc/olpc/iflash.fth
Log:
OLPC - Added some code to iflash.fth to clear out junk in the
manufacturing data area after Inysde BIOS has polluted it.
Not part of the main OLPC build.


Modified: cpu/x86/pc/olpc/iflash.fth
===================================================================
--- cpu/x86/pc/olpc/iflash.fth	2009-01-28 17:09:50 UTC (rev 1087)
+++ cpu/x86/pc/olpc/iflash.fth	2009-01-28 17:20:10 UTC (rev 1088)
@@ -22,6 +22,15 @@
    /mfg-data-merge move
 ;
 
+\ unpollute-mfg-data clears the Insyde BIOS residue from the beginning
+\ of the manufacturing data area, restoring it to erased state
+: unpollute-mfg-data  ( -- )
+   rom-pa mfg-data-offset + l@ -1 <>  abort" Mfg data area is not polluted"
+   get-mfg-data
+   mfg-data-buf mfg-data-merge-offset h# ff fill
+   put-mfg-data
+;
+
 : get-insyde  ( ["filename"] -- )
    parse-word   ( adr len )
    dup 0=  if  2drop    " u:\insyde.rom"  then  ( adr len )