[coreboot] [flashrom] Using 3c905B as programmer.

Uwe Hermann uwe at hermann-uwe.de
Wed May 20 17:31:09 CEST 2009

On Wed, May 13, 2009 at 05:13:32PM +0200, Mats Erik Andersson wrote:
> let me point out that the recent code to use 3x905C
> as a flashrom programmer, will almost certainly fail
> for the predecessor 3c905B-TX (id 0x9055). The reason
> being that there is a bug where the mii unit interferes.
> Thus one needs to put the media subsystem into state 0x06,
> i.e. internal mii, by a write to register window no. 3.
> Then window no. 0 can be activated, any read or write
> of flash may follow, and upon completion the old media
> configuration should be restored.
> After much effort I found this out for my own class
> of kernel modules aimed at using network cards for
> in situ programming.
> Interested developers can glean the details off a
> utility "bromutil.c" contributed with the Etherboot
> or gPXE distribution. That code is not by me!

Thanks, should be fixed in latest flashrom.

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