[coreboot] mcp55_fadt patch to fix Microsoft Windows BSOD 0x000000A5 (0x00000011, 0x00000006 ....)

David Robinson drobinson at bluechiptechnology.co.uk
Thu Dec 9 10:40:05 CET 2010



The attached patch fixes a problem preventing Windows XP / 7 from booting
with bug check error A5 (0x00000011, 0x00000006) on the Gigabyte GA-M57SLI-
S4 board. Microsoft documentation states that this bug check occurs because,
"SCI_EN never becomes set in PM1 Control Register". This patch sets the
SCI_EN bit. The patch applies to any board featuring the MCP55 south bridge.


Signed-off-by: David Robinson <drobinson at bluechiptechnology.co.uk>



Blue Chip Technology Limited. Chowley Oak Lane, Tattenhall, Chester, Cheshire CH3 9EX Tel: 01829 772000 Registered in England 3110403 Vat No: GB 618 374134
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