Commits on Apr 5, 2024

1. [flash_ctrl] Enable firmware dealing with multi-bit ECC and ICV errors …

   Before, these two errors types led to a fatal alert which is problematic
   during firmware selection and verification. This commit changes the
   design in the following way:
   - The two relevant bits in the FAULT_STATUS CSR are made clearable by
     software. Other bits in this register remain sticky.
   - The corresponding alert is no longer fatal.
   
   This means the alert is only sent out until the two bits are cleared by
   software. To be on the safe side, firmware can still classify the alert
   as fatal on the receiver side (in the alert handler). For the other
   error sources, the alert keeps getting triggered as before, i.e., it
   remains fatal.
   
   For more background information, refer to lowRISC#21353.
   
   This resolves lowRISC#21637.
   
   Signed-off-by: Pirmin Vogel <[email protected]>

   

   vogelpi committed Apr 5, 2024
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