Hi Fernando,
On Wed, Aug 22, 2018 at 3:44 PM, Fernando AE fernando.ae2017@gmail.com wrote:
Hello all,
I'm bringing up U-Boot for an iMX6UL board, and I've encountered unaligned memory accesses exceptions while I was trying to test the ETH commands (e.g., 'ping').
Have you located the place where this unaligned memory access happens in U-Boot source codes?
After investigation, I found out that the iMX6UL processor traps unaligned memory accesses by default. As a workaround, I disabled theses checks, hoping for negligible performance loss.
How does other ARMv7 targets behave? Do they all turn ff the unaligned memory access trap?
I'm wondering if it is a bad idea to disable unaligned memory accesses during the U-Boot execution, regarding performance issues or other drawbacks at the kernel level.
Regards, Bin