[coreboot] [flashrom] Transaction Error with opcode 0x03 failed...

FENG Yu Ning fengyuning1984 at gmail.com
Wed May 6 17:41:17 CEST 2009

Stan Yong wrote:
> I'm having problems with the flashrom on my system. ...
> Can provide some advice on this?

I can only tell the reason. Your current BIOS prevents flashrom from
reading certain part of the flash chip. I don't know if there is any
way to bypass that setting.

If you are interested in further explanation on the flashrom output,
please read on.

> ich_spi_read_page: offset=45056, number=256, buf=0163B020
> BBAR: 0x0
> Transaction error!
> run OPCODE 0x03 failed
> Error readingdone.

Error occurs here, when flashrom tries to read data at offset 45056
from the flash chip. 45056(dec) = b000(hex).

Look at FREG2.
> 0x5C: 0x023f000b (FREG2)
The value 0x0(23f)0(00b) means, the area in the flash chip from
0x00(00b)000 to 0x00(23f)fff belongs to (F)lash (REG)ion (2), which
stores data for the "Management Engine". That is, flashrom runs into
error when it is trying to read FREG2.

Now look at FRAP.
> 0x50: 0x00001a1b (FRAP)
The least significant byte '1b' indicates which regions software can
read. Expand it to binary, 00011011. That means the software can read
FREG0, FREG1, FREG3 and FREG4 but not FREG2. That is why flashrom runs
into error at offset 45056.

yu ning

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