Juno: Read primary CPU MPID from SCC GPR_1
This patch removes the PRIMARY_CPU definition hardcoded in the
Juno port. Instead, the primary CPU is obtained at runtime by
reading the SCC General Purpose Register 1 (GPR_1), whose value
is copied by the SCP into shared memory during the boot process.
Change-Id: I3981daa92eb7142250712274cf7f655b219837f5
diff --git a/plat/juno/bl2_plat_setup.c b/plat/juno/bl2_plat_setup.c
index 0441cf6..5dec2d7 100644
--- a/plat/juno/bl2_plat_setup.c
+++ b/plat/juno/bl2_plat_setup.c
@@ -128,7 +128,7 @@
PARAM_EP, VERSION_1, 0);
/* BL3-3 expects to receive the primary CPU MPID (through x0) */
- bl2_to_bl31_params->bl33_ep_info->args.arg0 = JUNO_PRIMARY_CPU;
+ bl2_to_bl31_params->bl33_ep_info->args.arg0 = 0xffff & read_mpidr();
bl2_to_bl31_params->bl33_image_info = &bl31_params_mem.bl33_image_info;
SET_PARAM_HEAD(bl2_to_bl31_params->bl33_image_info, PARAM_IMAGE_BINARY,