[PATCH v2 1/6] arm: imx8m: add OP-TEE node

[Adam Ford]

On Thu, Nov 7, 2024 at 2:42 AM Yannic Moog <y.moog at phytec.de> wrote:
>
> Add tee node in SoC u-boot device trees. Use a kconfig entry to specify
> load and entry addresses for the op-tee image in the respective
> defconfig.
>
> Signed-off-by: Yannic Moog <y.moog at phytec.de>
> ---
>  arch/arm/dts/imx8mm-u-boot.dtsi | 17 ++++++++++++++++-
>  arch/arm/dts/imx8mn-u-boot.dtsi | 17 ++++++++++++++++-
>  arch/arm/dts/imx8mp-u-boot.dtsi | 17 ++++++++++++++++-
>  arch/arm/mach-imx/imx8m/Kconfig |  8 ++++++++
>  4 files changed, 56 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/dts/imx8mm-u-boot.dtsi b/arch/arm/dts/imx8mm-u-boot.dtsi
> index d31bc822532..ecc2319279e 100644
> --- a/arch/arm/dts/imx8mm-u-boot.dtsi
> +++ b/arch/arm/dts/imx8mm-u-boot.dtsi
> @@ -164,6 +164,21 @@
>                                         };
>  #endif
>
> +                                       tee: tee {
> +                                               description = "OP-TEE";
> +                                               type = "tee";
> +                                               arch = "arm64";
> +                                               compression = "none";
> +                                               os = "tee";
> +                                               load = <CONFIG_IMX8M_OPTEE_LOAD_ADDR>;
> +                                               entry = <CONFIG_IMX8M_OPTEE_LOAD_ADDR>;
> +
> +                                               tee-os {
> +                                                       filename = "tee.bin";
> +                                                       optional;
> +                                               };
> +                                       };
> +
>                                         binman_fip: fip {
>                                                 arch = "arm64";
>                                                 compression = "none";
> @@ -192,7 +207,7 @@
>                                                 fdt = "fdt-SEQ";
>                                                 firmware = "uboot";
>  #ifndef CONFIG_ARMV8_PSCI
> -                                               loadables = "atf";
> +                                               loadables = "atf", "tee";
>  #endif
>                                         };
>                                 };
> diff --git a/arch/arm/dts/imx8mn-u-boot.dtsi b/arch/arm/dts/imx8mn-u-boot.dtsi
> index 6875c6d44ff..f9108cb75c7 100644
> --- a/arch/arm/dts/imx8mn-u-boot.dtsi
> +++ b/arch/arm/dts/imx8mn-u-boot.dtsi
> @@ -235,6 +235,21 @@
>                                         };
>  #endif
>
> +                                       tee: tee {
> +                                               description = "OP-TEE";
> +                                               type = "tee";
> +                                               arch = "arm64";
> +                                               compression = "none";
> +                                               os = "tee";
> +                                               load = <CONFIG_IMX8M_OPTEE_LOAD_ADDR>;
> +                                               entry = <CONFIG_IMX8M_OPTEE_LOAD_ADDR>;
> +
> +                                               tee-os {
> +                                                       filename = "tee.bin";
> +                                                       optional;
> +                                               };
> +                                       };
> +
>                                         binman_fip: fip {
>                                                 arch = "arm64";
>                                                 compression = "none";
> @@ -263,7 +278,7 @@
>                                                 fdt = "fdt-SEQ";
>                                                 firmware = "uboot";
>  #ifndef CONFIG_ARMV8_PSCI
> -                                               loadables = "atf";
> +                                               loadables = "atf", "tee";
>  #endif
>                                         };
>                                 };
> diff --git a/arch/arm/dts/imx8mp-u-boot.dtsi b/arch/arm/dts/imx8mp-u-boot.dtsi
> index 56749ccacd2..9ede98a11e4 100644
> --- a/arch/arm/dts/imx8mp-u-boot.dtsi
> +++ b/arch/arm/dts/imx8mp-u-boot.dtsi
> @@ -185,6 +185,21 @@
>                                         };
>  #endif
>
> +                                       tee: tee {
> +                                               description = "OP-TEE";
> +                                               type = "tee";
> +                                               arch = "arm64";
> +                                               compression = "none";
> +                                               os = "tee";
> +                                               load = <CONFIG_IMX8M_OPTEE_LOAD_ADDR>;
> +                                               entry = <CONFIG_IMX8M_OPTEE_LOAD_ADDR>;
> +
> +                                               tee-os {
> +                                                       filename = "tee.bin";
> +                                                       optional;
> +                                               };
> +                                       };
> +
>                                         @fdt-SEQ {
>                                                 description = "NAME";
>                                                 type = "flat_dt";
> @@ -204,7 +219,7 @@
>                                                 fdt = "fdt-SEQ";
>                                                 firmware = "uboot";
>  #ifndef CONFIG_ARMV8_PSCI
> -                                               loadables = "atf";
> +                                               loadables = "atf", "tee";
>  #endif
>                                         };
>                                 };
> diff --git a/arch/arm/mach-imx/imx8m/Kconfig b/arch/arm/mach-imx/imx8m/Kconfig
> index b254a50b091..14f14db6a35 100644
> --- a/arch/arm/mach-imx/imx8m/Kconfig
> +++ b/arch/arm/mach-imx/imx8m/Kconfig
> @@ -37,6 +37,14 @@ config SYS_HAS_ARMV8_SECURE_BASE
>           If enabled, please also define the value for ARMV8_SECURE_BASE,
>           for i.MX8M, it could be some address in OCRAM.
>
> +config IMX8M_OPTEE_LOAD_ADDR
> +       hex "Load address of OPTEE image"
> +       default 0x56000000
> +       help
> +         The load and entry address for the OPTEE image. This value defaults to
> +         0x56000000 if not provided in the board defconfig file.

I think this would need to vary based on the platform.  I think the
addresses may be different depending on Mini, Nano and Plus and also
dependent on the available SDRAM.
> +
> +
>  choice
>         prompt "NXP i.MX8M board select"
>         optional
>
> --
> 2.43.0
>