Hi, According to "TCG Platform Reset Attack Mitigation Specification", if MOR bit is set, "it must initiate a vendor-specific method that overwrites all of system memory and the processor caches"
In QuarkPlatformPkg/Platform/Pei/PlatformInit/MemoryCallback.c and QuarkPlatformPkg/Platform/Pei/PlatformInit/MrcWrapper.c, there is some code to clear RAM, however I don't see code that would clear the processor caches. For edk2/qemu, Paolo suggested it may be simpler to clear the cache unconditionally. How would you implement that? Using EFI_CPU_ARCH_PROTOCOL.FlushDataCache? (or direct AsmWbinvd call) thanks -- Marc-André Lureau _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
