Intel just announced STM at IDF, read Vincent’s blog for more details:
http://vzimmer.blogspot.com/2015/08/smi-transfer-monitor-stm-unleashed.html
https://firmware.intel.com/content/smi-transfer-monitor-stm
https://firmware.intel.com/sites/default/files/STM_Release_1.0.zip
Click to access A_Tour_Beyond_BIOS_Launching_STM_to_Monitor_SMM_in_EFI_Developer_Kit_II.pdf
