[coreboot] How to port core boot

ali hagigat hagigatali at gmail.com
Tue Feb 7 16:42:05 CET 2012

Peter, It is an easy answer to say that RAM is not initialized
correctly! While I am pretty sure that RAM is OK, I have an assembly
language which can verify that.

Peter, you do not make the problem clear. The problem is that the
registers of RAM controller are initialized with some correct values,
but the Intel board had 82810 as its GMCH.

My GMCH is 82815. I guess Coreboot at some point extracts some
information from the config registers of GMCH and sets some variables
and this is exactly the point which the problem occurs.

I do not have enough information about the source code of Coreboot but
logically where Coreboot is specifying the top of memory? Coreboot
needs to know the size of memory, right? Where it is specified?

Does my words make sense?


On Tue, Feb 7, 2012 at 6:58 PM, Peter Stuge <peter at stuge.se> wrote:
> ali hagigat wrote:
>> Stage: loading fallback/coreboot_ram @ 0x100000 (180224 bytes), entry @ 0x100000
>> Stage: done loading.
>> Jumping to image.
> ..
>> When it wants to do a jump inside cbfs_and_run_core(), the processor
>> halts some how.
> RAM is not initialized correctly.
> //Peter
> --
> coreboot mailing list: coreboot at coreboot.org
> http://www.coreboot.org/mailman/listinfo/coreboot

More information about the coreboot mailing list