sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

security/vboot: Add Support for Intel PTT

Browse Source 
Add support for Intel PTT. For supporting Intel PTT we need to disable
read and write access to the TPM NVRAM during the bootblock. TPM NVRAM
will only be available once the DRAM is initialized. To circumvent this,
we mock secdata if HAVE_INTEL_PTT is set. The underlying problem is,
that the iTPM only supports a stripped down instruction set while the
Intel ME is not fully booted up. Details can be found in Intel document
number 571993 - Paragraph 2.10.

Change-Id: I08c9a839f53f96506be5fb68f7c1ed5bf6692505
Signed-off-by: Christian Walter <christian.walter@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34510
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
Christian Walter
2019-07-23 10:26:30 +02:00
committed by Philipp Deppenwiese
parent 6d2dbe11ae
commit 0bd84ed250
9 changed files with 103 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src/security/vboot/Kconfig
View File

@@ -26,10 +26,13 @@ config VBOOT
if VBOOT
comment "Anti-Rollback Protection disabled because mocking secdata is enabled."
depends on VBOOT_MOCK_SECDATA
config VBOOT_MEASURED_BOOT
bool "Enable Measured Boot"
default n
depends on !VBOOT_MOCK_SECDATA
depends on TPM1 || TPM2
depends on !VBOOT_RETURN_FROM_VERSTAGE
help
Enables measured boot mode in vboot (experimental)