[coreboot] Memory corruption on Resume from S3 Baytrail

[Gailu Singh]

Hi Stefan,

I am using FSP. My cbfs prints are below.

Name                           Offset     Type         Size
cmos_layout.bin                0x200000   cmos_layout  1132
pci8086,0f31.rom               0x2004c0   optionrom    65536
fallback/romstage              0x210500   stage        27813
fallback/ramstage              0x217200   stage        68181
fallback/payload               0x227cc0   payload      269102
config                         0x269840   raw          4540
(empty)                        0x26aa40   null         4871576
cpu_microcode_blob.bin         0x710000   microcode    208896
(empty)                        0x743040   null         53080
mrc.cache                      0x74ffc0   (unknown)    65536
(empty)                        0x760000   null         393112
fsp.bin                        0x7bffc0   (unknown)    229376
(empty)                        0x7f8000   null         31640


On Fri, Nov 21, 2014 at 2:06 AM, Stefan Reinauer <
stefan.reinauer at coreboot.org> wrote:

> * Gailu Singh <gailu96 at gmail.com> [141119 20:36]:
> > Hi Experts,
> >
> > I am using Baytrail SoC board (Bayleybay CRB) and testing suspend/resume
> from
> > Linux (kernel 3.10). I can suspend with pm-suspend and resume with power
> > button; however after resuming I get following logs in Linux
> > Corrupted low memory at c0001004 (1004 phys) = 0008eaea
> > Corrupted low memory at c0001008 (1008 phys) = b0606600
> > ...
> > Corrupted low memory at c00018fc (18fc phys) = 000008ea
> >
> > This seems to be caused by coreboot as I do not see these logs if I use
> BIOS
> > instead of coreboot.
> > Is it true that during resume coreboot uses RAM portion already mapped
> by Linux
> > and thus corrupting it. How to I avoid the RAM conflict?
>
> Hi Gailu,
>
> is this happening with FSP or mrc.bin?
>
> Stefan
>
>
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