-----Original Message----- From: u-boot-bounces@lists.denx.de [mailto:u-boot-bounces@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 . . .