hello,David:I turn on the debug message and save the message to file(minicom4.cap in attachment) ,I'm a newer with coreboot, and I can't find what's wrong with the DIMM,would you kindly look this document?And which type of CPU is in your booted ok mainboard?thank you very much------------------ Original ------------------From: "David Hubbard"<david.c.hubbard+coreboot@gmail.com>;Date: Tue, Dec 17, 2013 05:56 AMTo: "Idwer Vollering"<vidwer@gmail.com>;Cc: "coreboot"<coreboot@coreboot.org>; "陈军根"<cjg@bolod.net>;Subject: Re: [coreboot] coreboot on amd A85 can't workDavidI am also very familiar with that particular message. I had a failing CPU and I ended up replacing parts until it booted ok.Like Idwer said: it is not able to initialize any DDR3 RAM. There is a #define that will turn on verbose output about the DDR3 link training if the Vendor BIOS (from Asus) thinks the memory is ok.