diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-imx/imx8/fdt.c | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/imx8/fdt.c b/arch/arm/mach-imx/imx8/fdt.c index b2e7cf09cf..65c8ac1a7e 100644 --- a/arch/arm/mach-imx/imx8/fdt.c +++ b/arch/arm/mach-imx/imx8/fdt.c @@ -226,6 +226,56 @@ static int config_smmu_fdt(void *blob) return 0; } +static int ft_add_optee_node(void *fdt, bd_t *bd) +{ + const char *path, *subpath; + int offs; + + /* + * No TEE space allocated indicating no TEE running, so no + * need to add optee node in dts + */ + if (!boot_pointer[1]) + return 0; + + offs = fdt_increase_size(fdt, 512); + if (offs) { + printf("No Space for dtb\n"); + return 1; + } + + path = "/firmware"; + offs = fdt_path_offset(fdt, path); + if (offs < 0) { + path = "/"; + offs = fdt_path_offset(fdt, path); + + if (offs < 0) { + printf("Could not find root node.\n"); + return offs; + } + + subpath = "firmware"; + offs = fdt_add_subnode(fdt, offs, subpath); + if (offs < 0) { + printf("Could not create %s node.\n", subpath); + return offs; + } + } + + subpath = "optee"; + offs = fdt_add_subnode(fdt, offs, subpath); + if (offs < 0) { + printf("Could not create %s node.\n", subpath); + return offs; + } + + fdt_setprop_string(fdt, offs, "compatible", "linaro,optee-tz"); + fdt_setprop_string(fdt, offs, "method", "smc"); + + return 0; +} + int ft_system_setup(void *blob, bd_t *bd) { int ret; @@ -238,5 +288,5 @@ int ft_system_setup(void *blob, bd_t *bd) return ret; } - return 0; + return ft_add_optee_node(blob, bd); } |