[coreboot] Samsung 550 Chromebook own Coreboot

[John Lewis]

On 31/07/2013 15:33, Aaron Durbin wrote:

> On Wed, Jul 31, 2013 at 9:24 AM, John Lewis <jlewis at johnlewis.ie> 
> wrote:
>
>> Hi all, Just want to confirm where we are in terms of things working 
>> or
>> not. The new system-agent binary works and recognises all 4 GB of 
>> RAM
>> as long as an additional pei data field is added to Stefan's patches 
>> in
>> http://review.coreboot.org/#/c/3831/ [1] as detailed by Kyösti in 
>> the
>> comments. The patches in http://review.coreboot.org/#/c/3830/ [2] 
>> don't
>> appear to do anything for mrc.cache (it's still zero size) and this 
>> (or
>> perhaps something else) results in a time to SeaBIOS prompt of 
>> between
>> 5 to 9 seconds.
>
> Can you show us 'ls -l $(obj)/mrc.cache' ? I didn't see

-rw-rw-r--. 1 john john 0 Jul 31 11:04 mrc.cache

> CONFIG_MRC_CACHE_SIZE in your .config. Also, what does 'cbfstool

Menuconfig doesn't allow you specify it, and there isn't currently a 
default being put in automatically.

> image.rom print' say now? Build logs with V=1 would be helpful to see

coreboot.rom: 8192 kB, bootblocksize 1552, romsize 8388608, offset 
0x700000
alignment: 64 bytes

Name                           Offset     Type         Size
cmos_layout.bin                0x700000   cmos_layout  1120
pci8086,0106.rom               0x7004c0   optionrom    65536
cpu_microcode_blob.bin         0x710500   microcode    20544
fallback/romstage              0x7155c0   stage        36438
fallback/coreboot_ram          0x71e480   stage        294016
fallback/payload               0x766140   payload      87816
(empty)                        0x77b880   null         18200
mrc.cache                      0x77ffc0   (unknown)    0
(empty)                        0x780000   null         130968
mrc.bin                        0x79ffc0   (unknown)    195732
(empty)                        0x7cfcc0   null         49880
spd.bin                        0x7dbfc0   (unknown)    1536
(empty)                        0x7dc600   null         144280

> what is occurring when mrc.cache is being created.

See attached build.log

>
>> I added a 64 GB SSD this afternoon, which I have working, but 
>> something
>> strange went on with geometry - if I tried to dd the partition 
>> itself
>> back it would crap out at 2 GB (this was after dd'ing the backed up 
>> mbr
>> onto the new drive). If I dd'ed the whole device it worked, but the
>> partition wouldn't mount, and fdisk would report that the partition 
>> was
>> too large for the device. Luckily, after reboot, it worked anyway. 
>> :)
>> Summary: if we could get rid of the 5 to 9 second delay, and just
>> confirm the drive detection geometry is A1 I think we are there. 
>> John.
>> -- coreboot mailing list: coreboot at coreboot.org [3]
>> http://www.coreboot.org/mailman/listinfo/coreboot [4]
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