iMX8M Quad EVK board: UEFI boot on U-boot

[Julie3]

Hello,

I am working on iMX8M Quad EVK and I am using Secure Boot with imx-image-core yocto image.

Now, I would like to implement UEFI boot. To do that, I changed configuration file in u-boot-imx by adding the following patch:

diff --git a/configs/imx8mq_evk_defconfig b/configs/imx8mq_evk_defconfig

index 1902941139..191215a288 100644

--- a/configs/imx8mq_evk_defconfig

+++ b/configs/imx8mq_evk_defconfig

@@ -1,5 +1,8 @@

CONFIG_ARM=y

CONFIG_ARCH_IMX8M=y

+CONFIG_SECURE_BOOT=y

+CONFIG_HAS_CAAM=y

+CONFIG_IMX_HAB=y

CONFIG_SYS_TEXT_BASE=0x40200000

CONFIG_SPL_GPIO_SUPPORT=y

CONFIG_SPL_LIBCOMMON_SUPPORT=y

@@ -139,3 +142,7 @@ CONFIG_EFI_RUNTIME_UPDATE_CAPSULE=y

CONFIG_EFI_CAPSULE_ON_DISK=y

CONFIG_EFI_CAPSULE_FIRMWARE_RAW=y

CONFIG_EFI_SECURE_BOOT=y

+CONFIG_CMD_BOOTEFI=y

+CONFIG_EFI_LOADER=y

+CONFIG_CMD_BOOTEFI_HELLO_COMPILE=y

+CONFIG_CMD_BOOTEFI_HELLO=y

\ No newline at end of file

I can succesfully flash eMMC and boot my board. But I don't think UEFI is implemented now. I am totally lost on how to do it. Could I get some help please?

Also, I used this document: https://u-boot.readthedocs.io/en/latest/develop/uefi/uefi.html

Best regards,

Julie