On Thu, Jul 8, 2010 at 11:20, Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net wrote:
On 08.07.2010 06:35, Mattias Mattsson wrote:
I'm using latest flashrom (r1070) on an Asus P2B-N h/w rev. 1.04. Unfortunately it can't find the flash chip. (It's a MVC V29C51002T-90P).
That's pretty odd. Either the writes are not passed through to the chip, or another probe sequence irritated it too much. You chipset talks directly to the Parallel flash chip AFAICS.
DMI string baseboard-manufacturer: "ASUSTeK Computer INC." DMI string baseboard-product-name: "P2B-N" DMI string baseboard-version: "REV 1.xx" DMI string chassis-type: "Unknown" Found chipset "Intel PIIX4/4E/4M", enabling flash write... chipset PCI ID is 8086:7110, OK. This chipset supports the following protocols: Parallel. [...] Probing for Winbond W49F002U, 256 KB: probe_jedec_common: id1 0x22, id2 0xfd, id1 parity violation, id1 is normal flash content, id2 is normal flash content [...] No EEPROM/flash device found.
Could you perform a cold boot (including removing the power plug), and run flashrom exactly once after boot with the following command line:
flashrom -V -c W49F002U
Sure, no problem. Output attached.
I found a datasheet for V29C51002T/V29C51002B. Maybe it can be of help? http://www.ezoflash.com/datasheets/flash/Mosel_Vitelic/V29C51002.pdf
-m