[U-Boot-Users] Support for AMD Flash SecSi Sector
Hi,
we use an AMD 29LV640D flash on our MCF5272 board. This flash has a 128 Word sector called SecSi which is one time programmable. We'd like to use the SecSi sector of the flash to store board information, as serial number and ethernet MAC address.
I'll start to implement support for the SecSi sector in u-boot. Is there anybody, still working on this topic? Are there any suggestions how to implement it?
I think of adding some special commands in cmd_flash.c to read and prog the SecSi sector. Additionally I would change the read function for the "ethaddr" to use the SeCsi sector instead of the environment.
Regards,
Josef Baumgartner
In message 200401301120.32569.josef.baumgartner@telex.de you wrote:
we use an AMD 29LV640D flash on our MCF5272 board. This flash has a 128 Word sector called SecSi which is one time programmable. We'd like to use the SecSi sector of the flash to store board information, as serial number and ethernet MAC address.
Note that srial number and MAC address are already standard concepts in U-Boot (envrionment variables "serial#" and "ethaddr"); also, you may need more than one MAC address per board.
I'll start to implement support for the SecSi sector in u-boot. Is there anybody, still working on this topic? Are there any suggestions how to implement it?
Please implement it ina way that is compatible with the existent code, i. e. make it fit with the existing "serial#" and "ethaddr" variables.
I think of adding some special commands in cmd_flash.c to read and prog the SecSi sector. Additionally I would change the read function for the "ethaddr" to use the SeCsi sector instead of the environment.
I think this has some potential to break existing code. Please be careful.
Best regards,
Wolfgang Denk
participants (2)
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Josef Baumgartner -
Wolfgang Denk