On 27.11.2009 15:01, Stefan Reinauer wrote:
On 11/27/09 1:23 PM, Carl-Daniel Hailfinger wrote:
You could sniff LPC and SPI buses during reflashing with the vendor flash tool and correlate the dumps.
There is not SPI involved, however.
Sorry, my bad. I was writing two mails at the same time and confused the SPI problem with your problem.
It should at least give you an idea on how to probe for the EC and possibly also on how to send commands to the flash chip. The probe sequence is most interesting, though, because it allows flashrom to detect the EC and issue a warning message.
I found out that I can dump (some of) the EC memory using ectool, but that's only a minor part of the story.
The ENE 910 has both a SPI and FWH interface, but otherwise it seems fairly similar to a 3700 (which was used in the OLPC) Unfortunately I didn't find any info on how to generically identify the presence of the 3700 either. In particular, I didn't find the IO address for indexing the full EC memory yet (0x381 on the OLPC)
AFAIK this is configurable and can even be disabled by the EC firmware.