On 16/12/2011 11:39, Marek Vasut wrote: >> >> Hi Marek, > > Hi Stefano, > > DISCLAIMER: I'm terribly tired today, had early class.
ok, I understand..;-) > > You disable fuses and use ethaddr. Why do we need them? We don't, but the > hardware is in the CPU and someone might use it so let's support it. Exactly - see also othe IMX SOCs. >> In a standard way, the environment must be adapted for each board to >> store the MAC address in the ethaddr variable. The reason to get the MAC >> directly from the hardware is that it is not required a specific initial >> setup for each board, and that simplifies the production and the >> delivery of the boards. > > Sure, but the OCOTP capacity here is limited. But there was approach from > Fabio/me how to make the OCOTP good enough for two NICs even. And this is nice. > * The idea is to let user configure the top 2 bytes per-device (which is the > most likely case). This is exactly what I meant. > * Introduce mac_modify(int fec, char *mac) function, which will be called > from > imx_get_mac_from_fuse() > * The function will adjust the MAC, for example by setting top two bytes to > preconfigured data, bottom four bytes from OCOTP and the last bit of the MAC > from "int fec", which is 0 for FEC0 and 1 for FEC1. This should be sufficient > for most people. Exactly ! > * The function will be weak so it can be overridden to your hearts content. Right ! Stefano -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: off...@denx.de ===================================================================== _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot