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Gokulraj's avatar
Gokulraj
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10 months ago

How to access the 8GB ram of DDR in Agilex 7

Hi, I need to access 8GB DDR ram in agilex dev kit,but now i able to access only 2GB ram.While trying to access the remaining 6GB of ram ot throw error as "TFTP error: trying to overwrite reserve...
Arm Processor
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tehjingy_Altera's avatar
tehjingy_Altera
Icon for Regular Contributor rankRegular Contributor
8 months ago

Hi

I tried it out on our devkit and there was no problem in writting into the SDCard.

Please find the logs given.

I see that you are writing to the address 0x28 000 0000.

This address space is a reserved space in the HPS. You should not be writting into that space.

https://www.intel.com/content/www/us/en/docs/programmable/814346/24-1/total-address-map-graphical.html

The DDR range are from 0x00_8000_0000 to 0x01_0000_0000 ( first 2GB) and 0x08_8000_0000 to 0x10_0000_0000 (remaining size of the ddr).

Regards

Jingyang, Teh

Gokulraj's avatar
Gokulraj
Icon for New Contributor rankNew Contributor
8 months ago

Hi,

I've changed the load address as 0x880000000 mentioned by you,but still i'm stuck in the same issue and refer the attached log and dtb file.

will you place share the u-boot you used while writing in the memory address 0x880000000.

Thanks

Gokulraj