topic u-boot plugin.s details in i.MX Processors

u-boot plugin.s details

gopinathsriniva — Fri, 26 May 2017 07:53:54 GMT

Hello Everyone,

I am in the process of porting u-boot for my custom IMX7 board. I am following this document for migrating the u-boot from IMX7 sabresd board. Also I have generated .cfg file using DDR stress testing tool. Now I came across this assemble file board/freescale/mx7dsabresd//plugin.S in the u-boot source code. Can anyone explain the purpose of this code file? Is this file needs to be ported based on my custom board? Because I can see code lines like "imx7d_ddr_freq_setting". Will this effect my board bring up in my custom board? Because I am using different ddr configurations.

Your suggestion will be much appreciated.

Cheers,

Gopinath S

Re: u-boot plugin.s details

igorpadykov — Fri, 26 May 2017 10:04:26 GMT

Hi Gopinath

in general plugin file does not needs to be ported,

plugin method is some extension to dcd header, allowing more flexibility,

please check sect.6.6.8 Plugin Image i.MX7D Reference Manual

http://cache.nxp.com/files/32bit/doc/ref_manual/IMX7DRM.pdf

Best regards
igor
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Re: u-boot plugin.s details

gopinathsriniva — Fri, 26 May 2017 10:08:34 GMT

Thank you for quick reply.