Hi,
I'm tesing to see if the coreboot Sandy/Ivy MRC supports 16GB DIMMs. Here's my result.
I'm using a MT16KTF2G64HZ-1G6A1[1]. My machine is Lenovo T420 with i7-3630QM. With this module inserted (I've tested 16G+0 and 16G+8G), the system can light up, but it'll then get crashed. - with GRUB2 payload, it'll crash after the payload loads - with SeaBIOS payload with proprietary VGABIOS, I can see the prompt, and can boot to a GRUB or syslinux loader on my USB stick, but when I try to boot a system, it get crashed. If I boot to Memtest86+ on my USB stick, the system will crash when memtest starts to test the memory.
And another thing I can see is, the first boot can boot to payload, but the second boot will fail. I think it's caused by the MRC cache.
I'm still wondering if Sandy/Ivy northbridge can support 16GB DIMMs. I'll give a more detailed EHCI debug output later. According to [2], I think the incompatibility is an MRC issue instead of hardware incompatibility.
[1] https://www.micron.com/parts/modules/ddr3-sdram/mt16ktf2g64hz-1g6?pc=%7BE1D8... [2] http://www.intelligentmemory.com/fileadmin/download/compatibilitylist.pdf
Iru.