From 10bf3d7ca3994f0abc119a0773f8023e19acafd1 Mon Sep 17 00:00:00 2001 From: "Ying-Chun Liu (PaulLiu)" Date: Mon, 15 Nov 2021 16:13:10 +0800 Subject: [PATCH] docs(imx8m): update for measured boot for imx8mm Signed-off-by: Ying-Chun Liu (PaulLiu) Change-Id: Ib313dc1ffac2fc5d04e0779c9f059236a71e65e7 --- docs/plat/imx8m.rst | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/docs/plat/imx8m.rst b/docs/plat/imx8m.rst index 0fe15c95a..101d52bef 100644 --- a/docs/plat/imx8m.rst +++ b/docs/plat/imx8m.rst @@ -60,3 +60,11 @@ BL2 will be in the FIT image and SPL will verify it. All of the BL3x will be put in the FIP image. BL2 will verify them. In U-boot we turn on the UEFI secure boot features so it can verify grub. And we use grub to verify linux kernel. + +Measured Boot +------------- + +When setting MEASURED_BOOT=1 on imx8mm we can let TF-A generate event logs +with a DTB overlay. The overlay will be put at PLAT_IMX8M_DTO_BASE with +maximum size PLAT_IMX8M_DTO_MAX_SIZE. Then in U-boot we can apply the DTB +overlay and let U-boot to parse the event log and update the PCRs.