Sometimes freeze only with u-boot in boot procedure

Discussion around products based on ARM Cortex-A5 core.

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xboehmef
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Joined: Tue May 20, 2014 8:59 am

Sometimes freeze only with u-boot in boot procedure

Wed Jan 20, 2016 4:12 pm

Hi,
we have custom board based on Sama5d3x-ek. We have two modes of operation.
1. AT91Bootstrap -> U-boot -> Kernel
2. AT91Bootstrap -> Kernel

We test what happens if we toggle power on and off in short time. The second mode works fine but in the first mode sometimes it happens that the cpu freezes after the debug output "Done to load image". The reset line is low and the cpu nothing seems to do and dont react on resets. Only a switch off of the power supply restarts the board.

Any ideas why this only happens if the u-boot is involved in the boot procedure?

Thanks,
Felix

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