feat(spmc): add support for FFA_MSG_WAIT
Handle an incoming call of FFA_MSG_WAIT from the secure world
and update the runtime state of the calling partition accordingly.
This ABI can be called in the following scenarios:
- Used by an SP to signal it has finished initializing.
- To resume the normal world after handling a secure interrupt
that interrupted the normal world.
- To relinquish control back to the normal world.
Signed-off-by: Marc Bonnici <marc.bonnici@arm.com>
Change-Id: I929713a2280e8ec291b5b4e8f6d4b49df337228c
diff --git a/services/std_svc/spm/el3_spmc/spmc.h b/services/std_svc/spm/el3_spmc/spmc.h
index e891516..df0aa61 100644
--- a/services/std_svc/spm/el3_spmc/spmc.h
+++ b/services/std_svc/spm/el3_spmc/spmc.h
@@ -23,6 +23,8 @@
#define FFA_SWD_ID_LIMIT SPMD_DIRECT_MSG_ENDPOINT_ID - 1
#define FFA_SWD_ID_MASK 0x8000
+/* ID 0 is reserved for the normal world entity, (Hypervisor or OS Kernel). */
+#define FFA_NWD_ID U(0)
/* First ID is reserved for the SPMC */
#define FFA_SPMC_ID U(FFA_SWD_ID_BASE)
/* SP IDs are allocated after the SPMC ID */