Hi, I can successfully perform a measured boot with TBOOT on my platform which is based on GM45 chipset as long as the internal Intel graphics device is used. If I disable the IGD and use an MXM card connected to the PEG port, then I get a reset at GETSEC(SENTER) and the error code returned is 0xc00004f1 progress 0x0f, error 0x1. This seems to be a progress code not an error code, it is 'DMA remap engine enabled'. Obviously the VT-d DMA remap table is different between the two boots as the references to the IGD have to be removed when it is disabled. Anyone know what is going on here?
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