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when accessing PCI physical address, T2080RDB hang

Question asked by Li Jun on Feb 14, 2019
Latest reply on Feb 15, 2019 by ufedor

When I read  PCI-0 physical address 0xf80000000(PCI-0 have no target device present) on T2080RDB(T2080E rev1.0) the CPU will hang and can not get CPU information from codeWarrior(codeWarrior report protocol  error).

 

But on other T2080RDB(T2080E rev1.1), the read access will not make CPU hang.

 

who can explain it? 

What is the correct CPU response when accessing 0xf80000000? trigger a machine check? data storage? 

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