Alan Alexander wrote: > Many thanks for the information. Unfortunately I don't have access to > the board schematics and getting technical support from the board > supplier is proving rather difficult. > > I have confirmed via an oscilloscope that both the WP# and TBL# pins are > permanently pulled high - indicating that no hardware write protection > is enabled (so it looks like I may have side stepped the GPIO locking > issue). The pins WP# and TBL# are active low and would be tied high even in the case of having write protection. Have you seen the WP# or TBL# go low on the scope during any of your write attempts?
I have also observed activity on the LFRAME#/FWH4 pin when > flashrom is attempting to write to the flash. Since I don't have access > to X-ray equipment I think my best shot is to take a look at waveforms > produced during a byte program cycle. I just need to get hold of that > Logic Analyzer....... > That will tell you how much you have working during an attempt at a byte program cycle. Are you able now to write to the memory area below the top-boot-block of the Flash? If so, all you have left to do is find out how they control the TBL#. -Bari -- linuxbios mailing list linuxbios@linuxbios.org http://www.linuxbios.org/mailman/listinfo/linuxbios
