From 0bd84ed25066fc28d3a0750d429a29c64bfb955d Mon Sep 17 00:00:00 2001 From: Christian Walter Date: Tue, 23 Jul 2019 10:26:30 +0200 Subject: security/vboot: Add Support for Intel PTT 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 Reviewed-on: https://review.coreboot.org/c/coreboot/+/34510 Tested-by: build bot (Jenkins) Reviewed-by: Philipp Deppenwiese Reviewed-by: Julius Werner --- src/drivers/intel/ptt/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'src/drivers/intel/ptt') diff --git a/src/drivers/intel/ptt/Kconfig b/src/drivers/intel/ptt/Kconfig index c013f42c43..fb70f9a02c 100644 --- a/src/drivers/intel/ptt/Kconfig +++ b/src/drivers/intel/ptt/Kconfig @@ -1,5 +1,6 @@ config HAVE_INTEL_PTT bool default n + select VBOOT_MOCK_SECDATA if VBOOT help Activate if your platform has Intel Platform Trust Technology like Intel iTPM and you want to use it. -- cgit v1.2.3