On 11/10/25 9:35 PM, Marco Felsch wrote:
> The BL32 OP-TEE binary can provide an overlay which contains all
> required configurations made by the secure-os, e.g. reserved-memory
> nodes, the firmware-interface (smc) and so on.
>
> This overlay can be used to uniform the OP-TEE configuration handling
> for all OF platforms. While this patch is platform agnostic, the OP-TEE
> overlay supply handling still depends on platform specific integrations.
> Therefore only i.MX8MM/N/P platforms support this new feature yet.
>
> However, prepare all ARMv8 platforms for the new loading mechanism.
>
> Signed-off-by: Marco Felsch <[email protected]>
Reviewed-by: Ahmad Fatoum <[email protected]>
> ---
> arch/arm/mach-imx/imx9.c | 2 +-
> arch/arm/mach-rockchip/rockchip.c | 3 ++-
> drivers/of/base.c | 3 +++
> drivers/soc/imx/soc-imx8m.c | 3 ++-
> 4 files changed, 8 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/mach-imx/imx9.c b/arch/arm/mach-imx/imx9.c
> index
> dd4fbf099e601dda3c01a4e2d64a9552d2f616e5..7eccba4ed630c73b6b4fe266f742fe3d4ed63dd5
> 100644
> --- a/arch/arm/mach-imx/imx9.c
> +++ b/arch/arm/mach-imx/imx9.c
> @@ -173,7 +173,7 @@ int imx93_init(void)
> imx93_set_arm_clock();
> imx93_bootsource();
>
> - if (IS_ENABLED(CONFIG_PBL_OPTEE)) {
> + if (IS_ENABLED(CONFIG_PBL_OPTEE) && !optee_overlay_applied()) {
> static struct of_optee_fixup_data optee_fixup_data = {
> .shm_size = OPTEE_SHM_SIZE,
> .method = "smc",
> diff --git a/arch/arm/mach-rockchip/rockchip.c
> b/arch/arm/mach-rockchip/rockchip.c
> index
> 0828f0fa72a9ad2495e012a42918c4b5431652e7..30cec0f0fe7cb651a1b157d5bb257fc67302422a
> 100644
> --- a/arch/arm/mach-rockchip/rockchip.c
> +++ b/arch/arm/mach-rockchip/rockchip.c
> @@ -33,7 +33,8 @@ static int rockchip_init(void)
> {
> const struct optee_header *hdr = rk_scratch_get_optee_hdr();
>
> - if (IS_ENABLED(CONFIG_PBL_OPTEE) && optee_verify_header(hdr) == 0) {
> + if (IS_ENABLED(CONFIG_PBL_OPTEE) && !optee_overlay_applied() &&
> + optee_verify_header(hdr) == 0) {
> static struct of_optee_fixup_data optee_fixup_data = {
> .shm_size = OPTEE_SHM_SIZE,
> .method = "smc",
> diff --git a/drivers/of/base.c b/drivers/of/base.c
> index
> c20fffb899a9c87910f424f5e4fd116f11cea546..203ebca1bf30cda5ce817a5d6b6eb437fc3befc6
> 100644
> --- a/drivers/of/base.c
> +++ b/drivers/of/base.c
> @@ -22,6 +22,7 @@
> #include <linux/clk.h>
> #include <linux/ctype.h>
> #include <linux/err.h>
> +#include <tee/optee.h>
>
> static struct device_node *root_node;
>
> @@ -2129,6 +2130,8 @@ int barebox_register_fdt(const void *dtb)
> return PTR_ERR(root);
> }
>
> + optee_register_overlay();
> +
> return barebox_register_of(root);
> }
>
> diff --git a/drivers/soc/imx/soc-imx8m.c b/drivers/soc/imx/soc-imx8m.c
> index
> 3b83284fcbfd56d543cc300b8d42771202aa0bbb..ecc5f30df35dfd89a485a3f6883ab33fbafb897e
> 100644
> --- a/drivers/soc/imx/soc-imx8m.c
> +++ b/drivers/soc/imx/soc-imx8m.c
> @@ -207,7 +207,8 @@ static int imx8_soc_imx8m_init(struct
> soc_device_attribute *soc_dev_attr)
> imx_set_reset_reason(src + IMX7_SRC_SRSR, imx7_reset_reasons);
> pr_info("%s unique ID: %s\n", cputypestr, uid);
>
> - if (IS_ENABLED(CONFIG_PBL_OPTEE) && imx8m_tzc380_is_enabled()) {
> + if (IS_ENABLED(CONFIG_PBL_OPTEE) && imx8m_tzc380_is_enabled() &&
> + !optee_overlay_applied()) {
> static struct of_optee_fixup_data optee_fixup_data = {
> .shm_size = OPTEE_SHM_SIZE,
> .method = "smc",
>
--
Pengutronix e.K. | |
Steuerwalder Str. 21 | http://www.pengutronix.de/ |
31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
