With FIP support in TF-A (when CONFIG_STM32MP15x_STM32IMAGE is not activated), the DT nodes needed by OP-TEE are added by OP-TEE firmware in U-Boot device tree, present in FIP.
These nodes are only required in trusted boot, when TF-A load the file u-boot.stm32, including the U-Boot device tree with STM32IMAGE header, in this case OP-TEE can't update the U-Boot device tree.
Moreover in trusted boot mode with FIP, as the OP-TEE nodes are present in U-Boot device tree only when needed the function stm32_fdt_disable_optee can be removed.
Signed-off-by: Patrick Delaunay patrick.delaunay@foss.st.com Reviewed-by: Patrice Chotard patrice.chotard@foss.st.com ---
(no changes since v1)
arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi | 3 +++ arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi | 3 +++ arch/arm/mach-stm32mp/fdt.c | 11 ++++++++++- 3 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi b/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi index 7dcc96c19c..8b66dace37 100644 --- a/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi +++ b/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi @@ -21,6 +21,8 @@ st,stm32prog-gpios = <&gpioa 14 GPIO_ACTIVE_LOW>; };
+#ifdef CONFIG_STM32MP15x_STM32IMAGE + /* only needed for boot with TF-A, witout FIP support */ firmware { optee { compatible = "linaro,optee-tz"; @@ -34,6 +36,7 @@ no-map; }; }; +#endif
led { red { diff --git a/arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi b/arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi index 46a43371bd..e5a1cb7084 100644 --- a/arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi +++ b/arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi @@ -20,6 +20,8 @@ st,stm32prog-gpios = <&gpioa 14 GPIO_ACTIVE_LOW>; };
+#ifdef CONFIG_STM32MP15x_STM32IMAGE + /* only needed for boot with TF-A, witout FIP support */ firmware { optee { compatible = "linaro,optee-tz"; @@ -33,6 +35,7 @@ no-map; }; }; +#endif
led { red { diff --git a/arch/arm/mach-stm32mp/fdt.c b/arch/arm/mach-stm32mp/fdt.c index ce2fe0206f..a19e954cf7 100644 --- a/arch/arm/mach-stm32mp/fdt.c +++ b/arch/arm/mach-stm32mp/fdt.c @@ -332,7 +332,16 @@ int ft_system_setup(void *blob, struct bd_info *bd) "st,package", pkg, false); }
- if (!CONFIG_IS_ENABLED(OPTEE) || + /* + * TEMP: remove OP-TEE nodes in kernel device tree + * copied from U-Boot device tree by optee_copy_fdt_nodes + * when OP-TEE is not detected (probe failed) + * these OP-TEE nodes are present in <board>-u-boot.dtsi + * under CONFIG_STM32MP15x_STM32IMAGE only for compatibility + * when FIP is not used by TF-A + */ + if (CONFIG_IS_ENABLED(STM32MP15x_STM32IMAGE) && + CONFIG_IS_ENABLED(OPTEE) && !tee_find_device(NULL, NULL, NULL, NULL)) stm32_fdt_disable_optee(blob);