[PATCH v5 03/10] ARM: dts: imx8mm-verdin: prepare for dek blob encapsulation

Marcel Ziswiler marcel at ziswiler.com
Fri Oct 8 02:28:08 CEST 2021

From: Marcel Ziswiler <marcel.ziswiler at toradex.com>

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:

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

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

(no changes since v1)

 arch/arm/dts/imx8mm-verdin-u-boot.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/dts/imx8mm-verdin-u-boot.dtsi b/arch/arm/dts/imx8mm-verdin-u-boot.dtsi
index 67c31c49b6c..a97626fa0c1 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>;

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