Andrew Goodbody wrote on 2012-04-19: > 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?
Thanks for report issues in this list. 0xc00004f1 'DMA remap engine enabled' should be an error. In SINIT ACM, it need to enable vt-d PMR regions, which need DMA remap engine disabled. The DMA remap engine should only be enabled after launching into kernel/hypervisor. This looks like a strange issue, can you tell which model of platform(exactly retail model) are you using? Meanwhile please send logs for both iGfx & PEG card cases. Jimmy ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ tboot-devel mailing list tboot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tboot-devel
