Page History
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# | Good | Bad | |
---|---|---|---|
1 | Limit the access to lower 16Mbytes | No change of code or hardware | Only 16MBytes can be accessed safely, may have to take special actions to actually limit the access to lower 16Mbyte |
2 | Preload from upper 16Mbytes in FSBL, limit access to 16Mbytes after FSBL handout | Only FSBL changes needed | Access above 16MByte should not be performed from SSBL or application code. |
3 | Rewrite FSBL, SSBL and OS/RTOS Drivers to avoid using EAR registersregister and "legacy mode" | Truly safe solution, no hardware changes no restriction on SPI Flash Partitioning | A lot of Code and drivers to modify, the patches have to be applied again after each software release. |
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