aarch32: optee: define the OP-TEE secure payload
AArch32 only platforms can boot the OP-TEE secure firmware as
a BL32 secure payload. Such configuration can be defined through
AARCH32_SP=optee.
The source files can rely on AARCH32_SP_OPTEE to condition
OP-TEE boot specific instruction sequences.
OP-TEE does not expect ARM Trusted Firmware formatted structure
as boot argument. Load sequence is expected to have already loaded
to OP-TEE boot arguments into the bl32 entrypoint info structure.
Last, AArch32 platform can only boot AArch32 OP-TEE images.
Change-Id: Ic28eec5004315fc9111051add6bb1a1d607fc815
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
diff --git a/bl2/bl2_image_load_v2.c b/bl2/bl2_image_load_v2.c
index 6517703..198b65e 100644
--- a/bl2/bl2_image_load_v2.c
+++ b/bl2/bl2_image_load_v2.c
@@ -87,8 +87,10 @@
assert(bl2_to_next_bl_params->h.version >= VERSION_2);
assert(bl2_to_next_bl_params->head->ep_info);
- /* Populate arg0 for the next BL image */
- bl2_to_next_bl_params->head->ep_info->args.arg0 = (u_register_t)bl2_to_next_bl_params;
+ /* Populate arg0 for the next BL image if not already provided */
+ if (bl2_to_next_bl_params->head->ep_info->args.arg0 == 0)
+ bl2_to_next_bl_params->head->ep_info->args.arg0 =
+ (u_register_t)bl2_to_next_bl_params;
/* Flush the parameters to be passed to next image */
plat_flush_next_bl_params();