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2 Intel(R) TXT Overview
6 Technology (Intel(R) TXT), defines platform-level enhancements that
9 Intel TXT was formerly known by the code name LaGrande Technology (LT).
11 Intel TXT in Brief:
17 Intel TXT is part of the vPro(TM) brand and is also available some
24 This site also has a link to the Intel TXT MLE Developers Manual,
27 Intel TXT has been presented at various events over the past few
47 uses Intel TXT to perform a measured and verified launch of an OS
55 w/ TXT support since v3.2), and now Linux kernels.
67 To get trust in the initial kernel without using Intel TXT, a
81 By using the hardware-based root of trust that Intel TXT provides,
100 platform supports Intel TXT and, if so, executes the GETSEC[SENTER]
103 - If tboot determines that the system does not support Intel TXT
119 in the TXT environment, it is necessary to create a small VT-x
139 TXT-related regions.
152 - As one of the checks/protections provided by TXT, it makes a copy
157 - At this point, tboot and TXT are out of the picture until a
159 - In order to put a system into any of the sleep states after a TXT
160 launch, TXT must first be exited. This is to prevent attacks that
169 - Tboot will clean up the environment and disable TXT, then use the
174 measured environment upon resume. Once the TXT environment
188 That's pretty much it for TXT support.
196 In BIOS, the user must enable: TPM, TXT, VT-x, VT-d. Not all BIOSes
210 The kernel option for enabling Intel TXT support is found under the
212 Execution Technology (TXT)". It is considered EXPERIMENTAL and
215 platform actually supports Intel TXT and thus whether any of the
218 The Q35_SINIT_17.BIN file is what Intel TXT refers to as an
226 SINIT ACM for a system is documented in the SINIT-guide.txt file