On Tue, Dec 10, 2013 at 2:37 AM, nitesh singh <[email protected]> wrote: > We have designed a custom version of Beaglebone Black with most of the > schematics being same. > > The board is assembled and we are able to get its PMIC work ,Power Led is > working and we measured the voltages, they are in agreement with the > datasheet of TPS65217C and BBB_SRM. The next step naturally would be to > boot this board with a sdcard. > > Since we have used sd cards with debian on them with Beaglebone Blacks ( > refering to : http://wiki.net/display/linuxonarm/BeagleBone+Black ) , we > considered trying it with this board too. Looking online as to how to boot > our board with that same sd card, we discovered that the eeprom on > beaglebone black will pose a problem and indeed we did not see any activity > by trying to power up the custom board with sd card having debian that works > well with beaglebone black. > > The eeprom is empty. Online forums suggest two ways, either block eeprom > access over i2c in uboot or write the requisite code in eeprom while in > uboot. If we can get access to the uboot shell over its UART0 , we can > manage. > > Can we be guided/helped or some pointers be given as to how do proceed > forward and get our custom board working ?
The u-boot read call is here: http://git.denx.de/?p=u-boot.git;a=blob;f=board/ti/am335x/board.c;hb=HEAD#l45 Just dump the current bbb eeprom and use that has a hint for populating the struct and just rebuild u-boot.. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- 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/groups/opt_out.
