Dear Jason Liu,
In message AANLkTik9SB4EP2YLMeCa-TNb4c7Z-2CPphLtBqfx6J8B@mail.gmail.com you wrote:
There is pretty much different with I.MX51 ROM, we will not use DCD data file to config the DDR script since ROM has the DCD size limitation and use the advance feature of what we called plug-in, the plug-in code must be in the first 2K of MMC card from 0x400 offset, that's why we need put this code section before start.S. The plug-in code will be called by boot ROM to do DDR init first and copy u-boot to DDR and jump to _start to run it.
It seems you did not try to think what it would actually mean to change your code as requested.
Actually nne of the above is reason that it must be done in your way. All this can be acchieved in the way Stefano suggested as well.
I know that you add the .imx format support, that's is simple to add one flash header which can be calculated staticly and glue it to u-boot.bin but it's impossible for plug-in feature support of ROM by using the same way.
Please explain why is should be impossible? I cannot follow that.
Does anyone of expert like you and Albert and Wolfgang tell me how to do it? It's very important for FSL
Um.. this statement is not very friendly. Do you mean you consider Stefano to be no expert? He is the iMX custodian, and there is reason for that.
coming many SOCs support, since we will use plug-in feature of boot ROM.
You have received a clear NAK from three persons on that: from Stefano (iMX custodian), Albert (ARM custodian), and me.
Is this not clear enough?
Best regards,
Wolfgang Denk