plat/arm/sgi: Add initial platform support for SGI platforms
System Guidance for Infrastructure are Arm's reference server
platforms. Add mandatory functions and macros required by all
SGI platforms to execute the TF-A tests. The common files
are placed in plat/arm/sgi/common/ folder.
Change-Id: Iaf9f3fa9dfa8d95c883bcab7c1ef00ea228b6b67
Signed-off-by: Chandni Cherukuri <chandni.cherukuri@arm.com>
diff --git a/plat/arm/sgi/common/sgi_pwr_state.c b/plat/arm/sgi/common/sgi_pwr_state.c
new file mode 100644
index 0000000..305d1f5
--- /dev/null
+++ b/plat/arm/sgi/common/sgi_pwr_state.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2018, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <platform.h>
+#include <psci.h>
+
+/* State IDs for local power states on SGI platforms. */
+#define SGI_PS_RUN_STATE_ID 0 /* Valid for CPUs and Clusters */
+#define SGI_PS_RETENTION_STATE_ID 1 /* Valid for only CPUs */
+#define SGI_PS_OFF_STATE_ID 2 /* Valid for CPUs and Clusters */
+
+/* Suspend depth definitions for each power state */
+#define SGI_PS_RUN_DEPTH 0
+#define SGI_PS_RETENTION_DEPTH 1
+#define SGI_PS_OFF_DEPTH 2
+
+/* The state property array with details of idle state possible for the core */
+static const plat_state_prop_t core_state_prop[] = {
+ {SGI_PS_RETENTION_DEPTH, SGI_PS_RETENTION_STATE_ID,
+ PSTATE_TYPE_STANDBY},
+ {SGI_PS_OFF_DEPTH, SGI_PS_OFF_STATE_ID, PSTATE_TYPE_POWERDOWN},
+ {0},
+};
+
+/* The state property array with details of idle state possible for the cluster */
+static const plat_state_prop_t cluster_state_prop[] = {
+ {SGI_PS_OFF_DEPTH, SGI_PS_OFF_STATE_ID, PSTATE_TYPE_POWERDOWN},
+ {0},
+};
+
+const plat_state_prop_t *plat_get_state_prop(unsigned int level)
+{
+ switch (level) {
+ case MPIDR_AFFLVL0:
+ return core_state_prop;
+ case MPIDR_AFFLVL1:
+ return cluster_state_prop;
+ default:
+ return NULL;
+ }
+}