So the DIMM slot happens to be empty/seated badly on both our Lumpy's? Don't think so.

Mine acted like a brick with the SODIMM removed.


Duncan Laurie <> wrote:

Lumpy should have 2GB of on-board memory and a DIMM slot that comes with a 2GB DIMM.

Coreboot seems to detect the on-board memory and finds the SPD binary for it, any chance the DIMM slot is empty?

Memory Straps:
 - memory capacity 2GB
 - die revision 1
 - vendor Samsung
CBFS: Looking for 'spd.bin' starting from 0x700000.
CBFS: Found file (offset=0x7dc000, len=1536).

I think the console output should show a summary after the MRC binary runs, but the verbose CBFS output is overflowing the buffer:;a=blob;f=src/northbridge/intel/sandybridge/raminit.c;h=3eb2fb3e79c01cfc8d75319b1089bb1aafde9806;hb=HEAD#l168


On Mon, Jul 29, 2013 at 8:14 AM, Aaron Durbin <> wrote:

I'm not certain it's just the last entry of the e820.  mrc is just
seeing 2GiB of ram and setting it up that way.

TOUUD 0x100600000 TOLUD 0x7f200000 TOM 0x80000000
MEBASE 0x7f800000
IGD decoded, subtracting 32M UMA and 2M GTT
TSEG base 0x7c800000 size 8M
Available memory below 4GB: 1992M
Available memory above 4GB: 6M


On Mon, Jul 29, 2013 at 10:04 AM, Kyösti Mälkki <> wrote:
> On Mon, 2013-07-29 at 15:19 +0100, John Lewis wrote:
>> Where do I find/build cbmem binary?
>> Please find attached dmesg.
> Hi
> I have same issue. Only about 2Gib of 4GiB installed shows. I had not
> noticed this until You pointed this out. Looks like a problem with the
> last entry coreboot creates in e820 memory map.
> This is from your dmesg, I see same with (close to) current master.
> [    0.000000] BIOS-e820: [mem 0x0000000100000000-0x00000001005fffff] usable
> The coreboot image my Samsung 550 originally shipped with had this:
> [    0.000000]  BIOS-e820: 0000000100000000 - 000000014fe00000 (usable)
> Kyösti

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