Hi,

On 10-09-16 22:09, Karsten Merker wrote:

Hello,

I have run tests of u-boot v2016.09-rc2 and current u-boot git head (as of commit 9dd1d0aa4e086bc8a5eaf19a67825c3323c41c5a) on various Allwinner A20-based systems and when netbooting a kernel, I get the following warning/error:

"CACHE: Misaligned operation at range [43300000,4450e2f0]"

Everything seems to work normally despite the message, though. Looking through the u-boot list archives I have found

http://lists.denx.de/pipermail/u-boot/2016-August/264405.html

and

http://lists.denx.de/pipermail/u-boot/2016-August/262669.html

which could be related to the issue, but I know too little about cache handling to really understand what is going on there.

The warning/error message is printed only when netbooting; booting from MMC and USB doesn't show the message, so this could possibly indicate an issue with the stmmac driver.

Yes looks like a stmmac driver issue indeed, specifically it seems to not be aligning the size/end of a dma flush request.

Regards,

Hans

Affected systems include:

• Olimex A20-OLinuXino-Lime2
• LeMaker BananaPro
• Cubietech Cubieboard2
• Cubietech Cubietruck

Regards, Karsten