Hello,
there are several mechanism to protect or unprotect the sectors (factory/customer). If the "Secured Silicon Sector" locked you need 12V at the reset pin to execute the "Temporary Sector Group Unprotect" command. If the "Secured Silicon Sector" not locked you are able to unlock the sectors permanently inside the "Secured Silicon Sector Command Sequence". Regards, Mathias Am 19.04.2011 07:37, schrieb Rogan Dawes: > On 2011/04/18 10:00 PM, Michael Schwingen wrote: > >>> Any ideas why the flash unprotect might fail? >> AFAIR, this is not implemented for AMD/Spansion parts, since these parts >> never had any protection mechanism when they started. >> In Contrast, many Intel flashes come up protected out of reset and >> *need* the unprotect operation. >> >> Are you sure your flash *does* have protection and *needs* unprotect? >> >> Otherwise, you can simple remove the "unprotect" option. >> >> cu >> Michael > > Hi Michael, > > Well, "flash info 0" shows that certain sectors are protected and that others > are not, which > suggests that protection is actually present and implemented in this > particular chip. > > I'll try to dig into this in a bit more detail. > > Thanks > > Rogan > _______________________________________________ > Openocd-development mailing list > [email protected] > https://lists.berlios.de/mailman/listinfo/openocd-development > _______________________________________________ Openocd-development mailing list [email protected] https://lists.berlios.de/mailman/listinfo/openocd-development
