Re: [U-Boot] [PATCH] ARMV7: OMAP4: Calculate SDRAM size

Dear Nishanth Menon,

In message 4C9F3E4F.3040403@gmail.com you wrote:

...

I think you are referring to SDRAM initialization. Yes, it is assumed that SDRAM initialization(at least the DMM part of it) is done before the call to sdram_size(). The right location for this seems to be the initial part of sdram_init().

thanks for the clarification.. NOR boot is usually going to have initial part in XIP -> we'd traditionally relocate to SDRAM before the call to sdram_size() happens.

Yes, this was the way how many ARM boards id, and this is what I'm trying to explain: this is WRONG.

SDRAM configuration must be done while still running from NOR, i. e. before relocation. Only then free reconfiguration, auto-sizing etc. is possible.

Best regards,

Wolfgang Denk