I'm porting coreboot to this board and I get the warning below, flashing works without problems.
Board: IEI PM-LX2-800-R10
Warning: Found chipset "AMD CS5536". Enabling flash write... OK. WARNING: unexpected second chipset match: "AMD CS5536" ignoring, please report lspci and board URL to flashrom@flashrom.org
URL: http://www.ieiworld.com/product_groups/industrial/content.aspx?gid=000010000...
Regards, Ricardo Martins