On Tue, Mar 11, 2025 at 09:09:34PM +0530, Pankaj Gupta wrote:
> Add support for NXP secure enclave called EdgeLock Enclave
> firmware (se-fw) for imx8ulp-evk.
>
> EdgeLock Enclave has a hardware limitation of restricted access to DDR
> address: 0x80000000 to 0xAFFFFFFF, so reserve 1MB of DDR memory region
> from 0x80000000.
>
> Signed-off-by: Pankaj Gupta <pankaj.gupta@xxxxxxx>
> ---
> arch/arm64/boot/dts/freescale/imx8ulp-evk.dts | 17 ++++++++++++++++-
> arch/arm64/boot/dts/freescale/imx8ulp.dtsi | 13 +++++++++++--
> 2 files changed, 27 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
> index 290a49bea2f7..a25d71bf2c26 100644
> --- a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
> @@ -1,6 +1,6 @@
> // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> /*
> - * Copyright 2021 NXP
> + * Copyright 2021, 2025 NXP
> */
>
> /dts-v1/;
> @@ -24,6 +24,17 @@ memory@80000000 {
> device_type = "memory";
> reg = <0x0 0x80000000 0 0x80000000>;
> };
space line here.
> + reserved-memory {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> +
> + ele_reserved: ele-reserved@90000000 {
> + compatible = "shared-dma-pool";
> + reg = <0 0x90000000 0 0x100000>;
> + no-map;
> + };
> + };
>
> reserved-memory {
> #address-cells = <2>;
> @@ -259,6 +270,10 @@ &usdhc0 {
> status = "okay";
> };
>
> +&hsm0 {
> + memory-region = <&ele_reserved>;
> +};
> +
> &fec {
> pinctrl-names = "default", "sleep";
> pinctrl-0 = <&pinctrl_enet>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
> index 2562a35286c2..c79a5de227b3 100644
> --- a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
> @@ -1,6 +1,6 @@
> // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> /*
> - * Copyright 2021 NXP
> + * Copyright 2021, 2025 NXP
> */
>
> #include <dt-bindings/clock/imx8ulp-clock.h>
> @@ -154,7 +154,7 @@ sosc: clock-sosc {
> #clock-cells = <0>;
> };
>
> - sram@2201f000 {
> + sram0: sram@2201f000 {
> compatible = "mmio-sram";
> reg = <0x0 0x2201f000 0x0 0x1000>;
>
> @@ -169,6 +169,8 @@ scmi_buf: scmi-sram-section@0 {
> };
>
> firmware {
> + #address-cells = <1>;
> + #size-cells = <0>;
Needn't #address-cells and #size-cells because no regs in children nodes
Frank
> scmi {
> compatible = "arm,scmi-smc";
> arm,smc-id = <0xc20000fe>;
> @@ -186,6 +188,13 @@ scmi_sensor: protocol@15 {
> #thermal-sensor-cells = <1>;
> };
> };
> +
> + hsm0: secure-enclave {
> + compatible = "fsl,imx8ulp-se-ele-hsm";
> + mbox-names = "tx", "rx";
> + mboxes = <&s4muap 0 0>, <&s4muap 1 0>;
> + sram = <&sram0>;
> + };
> };
>
> cm33: remoteproc-cm33 {
>
> --
> 2.43.0
>
