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How to sign the ssp polarity rom patch?

Question asked by Wolfgang Ocker on Apr 28, 2015
Latest reply on Apr 30, 2015 by Wolfgang Ocker

For a secure boot from SD on a i.MX28 it is necessary to sign the ssp polarity rom patch that is put into the eeprom.

 

In principle, it is easy. But:

The patch is loaded to address 0xe400 and that is a reserved memory area. HAB gives an error with reason 0x22, "invalid address: access denied". The secure boot fails.

 

If I load the patch to a different address, for example 0x8000, I get random crashes, I guess because of uninitialized memory (because the patch is not position independent??)

 

I'd appreciate any help!

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