From: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Date: Sat, 9 Oct 2021 20:41:05 +0000 (+0200)
Subject: ARM: dts: imx8mm-verdin: prepare for dek blob encapsulation
X-Git-Url: http://git.dujemihanovic.xyz/img/sics.gif?a=commitdiff_plain;h=8d060e4a66d6884341fbb3d8ab1d837a3f173d47;p=u-boot.git

ARM: dts: imx8mm-verdin: prepare for dek blob encapsulation

Prepare for DEK blob encapsulation support through "dek_blob" command.
On ARMv8, u-boot runs in non-secure, thus cannot encapsulate a DEK blob
for encrypted boot.
The DEK blob is encapsulated by OP-TEE through a trusted application
call. U-boot sends and receives the DEK and the DEK blob binaries
through OP-TEE dynamic shared memory.

To enable the DEK blob encapsulation, add to the defconfig:
CONFIG_SECURE_BOOT=y
CONFIG_FAT_WRITE=y
CONFIG_CMD_DEKBLOB=y

Taken from NXP's commit 56d2050f4028 ("imx8m: Add DEK blob encapsulation
for imx8m").

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
---

diff --git a/arch/arm/dts/imx8mm-verdin-u-boot.dtsi b/arch/arm/dts/imx8mm-verdin-u-boot.dtsi
index 67c31c49b6..a97626fa0c 100644
--- a/arch/arm/dts/imx8mm-verdin-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-verdin-u-boot.dtsi
@@ -6,6 +6,13 @@
 #include "imx8mm-u-boot.dtsi"
 
 / {
+	firmware {
+		optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+		};
+	};
+
 	wdt-reboot {
 		compatible = "wdt-reboot";
 		wdt = <&wdog1>;