> -----Original Message----- > From: u-boot-boun...@lists.denx.de [mailto:u-boot-boun...@lists.denx.de] > On Behalf Of Clint Adams > Sent: Saturday, March 26, 2011 3:32 AM > To: u-boot@lists.denx.de > Subject: Re: [U-Boot] [PATCH v2 0/4] Kirkwood: Add support for OpenRD- > Client & OpenRD-Ultimate > > Julian Pidancet wrote: > > A nice future improvement would be to add variant detection and > configuration > > at run-time as suggested on the mailing-list in a recent email. So one > could > > use the same binary for all board variants. > > Does anyone know offhand how to do this? I have heard rumors of a GPIO > method but I haven't found any details.
1. One possibility is to use some GPIOs and configure them on all board to detect the board version, read these GPIOs in the u-boot code and take board variant specific execution/configuration. 2. One can have similar approach keeping some data in separate EEPROM. 3. one can read availability of specific h/w on the board. Of which #3 will be better but may not be suitable for all boards variant. I personally do not like this method. Since there is always chance to have wrong configuration. I would always prefer to have build time configuration passing as per board variant. Regards.. Prafulla . . . _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
