Gerald, I've got the SRM and know the format of the data that needs to get written there - I'm just stuck on HOW to get it there:
Could anyone provide* a good set of instructions for getting access to a > uBoot prompt* from a stock flasher image OR provide current* links to the > blank-EEPROM manufacturing images* (or equivalents) that RCN's referenced? > The two methods I've seen discussed on the forums are: 1) Manually updating the EEPROM from i2c commands issued within uBoot 2) Using a flasher image with a uBoot build that bypasses the magic-number-check and writes content to the EEPROM from a command-line script. On Tuesday, September 8, 2015 at 3:19:29 PM UTC-6, Gerald wrote: > > Take a real BBB and copy the contents if you need to. EEPROM data varies > with serial number and revision data. But the EEPROM data is described in > the SRM, is still valid and is not stale or old. > > Gerald > > > On Tue, Sep 8, 2015 at 4:15 PM, Phil Mills <[email protected] > <javascript:>> wrote: > >> I have inherited responsibility for a bunch of 3rd-party direct clones of >> a Beaglebone Black C5 (only known change is in silkscreening). >> >> Since none of these have any contents written to the onboard EEPROM, they >> fail to boot with "CCCCC" written to the serial console with no uSD card, >> and >> >> >>> U-Boot SPL 2015.01-00001-gb2412df (Jan 29 2015 - 15:01:06) >>> Incorrect magic number (0xffffffff) in EEPROM >>> Could not get board ID. >>> Incorrect magic number (0xffffffff) in EEPROM >>> Could not get board ID. >>> Unknown board, cannot configure pinmux.### ERROR ### Please RESET the >>> board ### >> >> >> ...written to the console when I try to boot it from a uSD cards with a >> stock BBB image (the 2015-03-01 Debian 7.8 image). So clearly I need to >> get some good contents into the EEPROM. >> >> >> I've been trying to hunt down instructions for how to access the U-Boot >> prompt to manually write the EEPROM via the i2c bus, but haven't hit any >> luck there. >> >> >> Robert Nelson's posted links in the past to what he's described as the >> "factory images for flashing boards with blank EEPROMs", but those links >> (to rcn-ee.org) are stale/dead or behind apparently access-controlled >> folders on his server. >> >> >> >> Could anyone provide a good set of instructions for getting access to a >> uBoot prompt from a stock flasher image OR provide current links to the >> blank-EEPROM manufacturing images (or equivalents) that RCN's referenced? >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Gerald > > [email protected] <javascript:> > http://beagleboard.org/ > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
