SPMD: enhance SPMC internal boot states

This patch adds SPMC states used by the SPMD to track SPMC boot phases
specifically on secondary cores.

Change-Id: If97af7352dda7f04a8e46a56892a2aeddcfab91b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Signed-off-by: Max Shvetsov <maksims.svecovs@arm.com>

services/std_svc/spmd/spmd_main.c

@@ -133,9 +133,18 @@ static int32_t spmd_init(void)
 {
 	spmd_spm_core_context_t *ctx = spmd_get_context();
 	uint64_t rc;
+	unsigned int linear_id = plat_my_core_pos();
+	unsigned int core_id;
 
 	VERBOSE("SPM Core init start.\n");
-	ctx->state = SPMC_STATE_RESET;
+	ctx->state = SPMC_STATE_ON_PENDING;
+
+	/* Set the SPMC context state on other CPUs to OFF */
+	for (core_id = 0; core_id < PLATFORM_CORE_COUNT; core_id++) {
+		if (core_id != linear_id) {
+			spm_core_context[core_id].state = SPMC_STATE_OFF;
+		}
+	}
 
 	rc = spmd_spm_core_sync_entry(ctx);
 	if (rc != 0ULL) {
@@ -143,7 +152,8 @@ static int32_t spmd_init(void)
 		return 0;
 	}
 
-	ctx->state = SPMC_STATE_IDLE;
+	ctx->state = SPMC_STATE_ON;
+
 	VERBOSE("SPM Core init end.\n");
 
 	return 1;
@@ -375,7 +385,7 @@ uint64_t spmd_smc_handler(uint32_t smc_fid,
 		 * this CPU. If so, then indicate that the SPM Core initialised
 		 * unsuccessfully.
 		 */
-		if (secure_origin && (ctx->state == SPMC_STATE_RESET)) {
+		if (secure_origin && (ctx->state == SPMC_STATE_ON_PENDING)) {
 			spmd_spm_core_sync_exit(x2);
 		}
 
@@ -508,7 +518,7 @@ uint64_t spmd_smc_handler(uint32_t smc_fid,
 		 * this CPU from the Secure world. If so, then indicate that the
 		 * SPM Core initialised successfully.
 		 */
-		if (secure_origin && (ctx->state == SPMC_STATE_RESET)) {
+		if (secure_origin && (ctx->state == SPMC_STATE_ON_PENDING)) {
 			spmd_spm_core_sync_exit(0);
 		}
 

services/std_svc/spmd/spmd_private.h

@@ -35,7 +35,9 @@
 
 typedef enum spmc_state {
 	SPMC_STATE_RESET = 0,
-	SPMC_STATE_IDLE
+	SPMC_STATE_OFF,
+	SPMC_STATE_ON_PENDING,
+	SPMC_STATE_ON
 } spmc_state_t;
 
 /*