From: Marcel Ziswiler marcel.ziswiler@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: 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 ---
(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>;