Add an OPTEE node to the FDT when TEE installation has completed successfully. This informs the kernel of the presence of OPTEE.
Signed-off-by: Andrew F. Davis afd@ti.com --- arch/arm/mach-omap2/omap5/fdt.c | 35 ++++++++++++++++++++++++++++++++++- 1 file changed, 34 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-omap2/omap5/fdt.c b/arch/arm/mach-omap2/omap5/fdt.c index da8d59b..afa0037 100644 --- a/arch/arm/mach-omap2/omap5/fdt.c +++ b/arch/arm/mach-omap2/omap5/fdt.c @@ -212,6 +212,38 @@ static int ft_hs_fixup_dram(void *fdt, bd_t *bd) static int ft_hs_fixup_dram(void *fdt, bd_t *bd) { return 0; } #endif
+static int ft_hs_add_tee(void *fdt, bd_t *bd) +{ + const char *path, *subpath; + int offs; + + extern int tee_loaded; + if (!tee_loaded) + return 0; + + path = "/"; + offs = fdt_path_offset(fdt, path); + + subpath = "firmware"; + offs = fdt_add_subnode(fdt, offs, subpath); + if (offs < 0) { + printf("Could not create %s node.\n", subpath); + return 1; + } + + subpath = "optee"; + offs = fdt_add_subnode(fdt, offs, subpath); + if (offs < 0) { + printf("Could not create %s node.\n", subpath); + return 1; + } + + fdt_setprop_string(fdt, offs, "compatible", "linaro,optee-tz"); + fdt_setprop_string(fdt, offs, "method", "smc"); + + return 0; +} + static void ft_hs_fixups(void *fdt, bd_t *bd) { /* Check we are running on an HS/EMU device type */ @@ -219,7 +251,8 @@ static void ft_hs_fixups(void *fdt, bd_t *bd) if ((ft_hs_fixup_crossbar(fdt, bd) == 0) && (ft_hs_disable_rng(fdt, bd) == 0) && (ft_hs_fixup_sram(fdt, bd) == 0) && - (ft_hs_fixup_dram(fdt, bd) == 0)) + (ft_hs_fixup_dram(fdt, bd) == 0) && + (ft_hs_add_tee(fdt, bd) == 0)) return; } else { printf("ERROR: Incorrect device type (GP) detected!");