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MLK-16753-1 imx8m: add optee node according to runtime status 

If TEE is enabled according to rom_pointer[0,1] passed to BL33
from ATF, uboot need to add the optee node in dts to let
Kernel could probe the TEE driver.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan 2017-11-02 13:47:24 +08:00 committed by Ye Li
parent edd2be5f4b
commit 4341d35cc9
1 changed files with 49 additions and 1 deletions
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50
arch/arm/mach-imx/imx8m/soc.c
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@ -189,6 +189,54 @@ bool is_usb_boot(void)
}
#ifdef CONFIG_OF_SYSTEM_SETUP
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 (!rom_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 1;
}
subpath = "firmware";
offs = fdt_add_subnode(fdt, offs, subpath);
if (offs < 0) {
printf("Could not create %s node.\n", subpath);
}
}
subpath = "optee";
offs = fdt_add_subnode(fdt, offs, subpath);
if (offs < 0) {
printf("Could not create %s node.\n", subpath);
}
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 i = 0;
@ -283,7 +331,7 @@ usb_modify_speed:
}
}
return 0;
return ft_add_optee_node(blob, bd);
}
#endif