Enabling Anti-Rollback

The Boot Configuration Packet enables the Anti-Rollback feature for each interface defined in the boot sequence.

To initiate the Anti-Rollback feature for an NVM interface, modify the Boot Configuration Packet as follows (see Boot Configuration Packet):

To enable the feature, write the value 0x4152 in the field ANTIROLLBACK_EN[15:0] of the MEM_CFGx[2] word as explained below.
To indicate to the ROM Code the minimum version allowed for the bootstrap image stored in the memory connected to the NVM interface, write a Boot Version Packet in the OTP.

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