Tegra: enable SDEI handling

This patch enables SDEI support for all Tegra platforms, with
the following configuration settings.

* SGI 8 as the source IRQ
* Special Private Event 0
* Three private, dynamic events
* Three shared, dynamic events
* Twelve general purpose explicit events

Verified using TFTF SDEI test suite.

******************************* Summary *******************************
 Test suite 'SDEI'                                               Passed
 =================================
 Tests Skipped : 0
 Tests Passed  : 5
 Tests Failed  : 0
 Tests Crashed : 0
 Total tests   : 5
 =================================

Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Change-Id: I1922069931a7876a4594e53260ee09f2e4f09390
diff --git a/plat/nvidia/tegra/common/tegra_sdei.c b/plat/nvidia/tegra/common/tegra_sdei.c
new file mode 100644
index 0000000..9241b81
--- /dev/null
+++ b/plat/nvidia/tegra/common/tegra_sdei.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2020, NVIDIA Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/* SDEI configuration for Tegra platforms */
+
+#include <platform_def.h>
+
+#include <bl31/ehf.h>
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <lib/utils_def.h>
+#include <services/sdei.h>
+
+/* Private event mappings */
+static sdei_ev_map_t tegra_sdei_private[] = {
+	/* Event 0 definition */
+	SDEI_DEFINE_EVENT_0(TEGRA_SDEI_SGI_PRIVATE),
+
+	/* Dynamic private events */
+	SDEI_PRIVATE_EVENT(TEGRA_SDEI_DP_EVENT_0, SDEI_DYN_IRQ, SDEI_MAPF_DYNAMIC),
+	SDEI_PRIVATE_EVENT(TEGRA_SDEI_DP_EVENT_1, SDEI_DYN_IRQ, SDEI_MAPF_DYNAMIC),
+	SDEI_PRIVATE_EVENT(TEGRA_SDEI_DP_EVENT_2, SDEI_DYN_IRQ, SDEI_MAPF_DYNAMIC),
+
+	/* General purpose explicit events */
+	SDEI_EXPLICIT_EVENT(TEGRA_SDEI_EP_EVENT_0, SDEI_MAPF_CRITICAL),
+	SDEI_EXPLICIT_EVENT(TEGRA_SDEI_EP_EVENT_1, SDEI_MAPF_CRITICAL),
+	SDEI_EXPLICIT_EVENT(TEGRA_SDEI_EP_EVENT_2, SDEI_MAPF_CRITICAL),
+	SDEI_EXPLICIT_EVENT(TEGRA_SDEI_EP_EVENT_3, SDEI_MAPF_CRITICAL),
+	SDEI_EXPLICIT_EVENT(TEGRA_SDEI_EP_EVENT_4, SDEI_MAPF_CRITICAL),
+	SDEI_EXPLICIT_EVENT(TEGRA_SDEI_EP_EVENT_5, SDEI_MAPF_CRITICAL),
+	SDEI_EXPLICIT_EVENT(TEGRA_SDEI_EP_EVENT_6, SDEI_MAPF_CRITICAL),
+	SDEI_EXPLICIT_EVENT(TEGRA_SDEI_EP_EVENT_7, SDEI_MAPF_CRITICAL),
+	SDEI_EXPLICIT_EVENT(TEGRA_SDEI_EP_EVENT_8, SDEI_MAPF_CRITICAL),
+	SDEI_EXPLICIT_EVENT(TEGRA_SDEI_EP_EVENT_9, SDEI_MAPF_CRITICAL),
+	SDEI_EXPLICIT_EVENT(TEGRA_SDEI_EP_EVENT_10, SDEI_MAPF_CRITICAL),
+	SDEI_EXPLICIT_EVENT(TEGRA_SDEI_EP_EVENT_11, SDEI_MAPF_CRITICAL)
+};
+
+/* Shared event mappings */
+static sdei_ev_map_t tegra_sdei_shared[] = {
+	/* Dynamic shared events */
+	SDEI_SHARED_EVENT(TEGRA_SDEI_DS_EVENT_0, SDEI_DYN_IRQ, SDEI_MAPF_DYNAMIC),
+	SDEI_SHARED_EVENT(TEGRA_SDEI_DS_EVENT_1, SDEI_DYN_IRQ, SDEI_MAPF_DYNAMIC),
+	SDEI_SHARED_EVENT(TEGRA_SDEI_DS_EVENT_2, SDEI_DYN_IRQ, SDEI_MAPF_DYNAMIC)
+};
+
+void plat_sdei_setup(void)
+{
+	INFO("SDEI platform setup\n");
+}
+
+/* Export Tegra SDEI events */
+REGISTER_SDEI_MAP(tegra_sdei_private, tegra_sdei_shared);