mediatek: mt8192: Add SiP service

Add the basic SiP service

Change-Id: Ib7f2380aab910adf8d33498a79ecd287273907c5
Signed-off-by: Nina Wu <nina-cm.wu@mediatek.com>

plat/mediatek/mt8192/include/plat_sip_calls.h

+/*
+ * Copyright (c) 2020, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PLAT_SIP_CALLS_H
+#define PLAT_SIP_CALLS_H
+
+/*******************************************************************************
+ * Plat SiP function constants
+ ******************************************************************************/
+#define MTK_PLAT_SIP_NUM_CALLS    0
+
+#endif /* PLAT_SIP_CALLS_H */

plat/mediatek/mt8192/plat_sip_calls.c

+/*
+ * Copyright (c) 2020, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <common/runtime_svc.h>
+
+uintptr_t mediatek_plat_sip_handler(uint32_t smc_fid,
+				u_register_t x1,
+				u_register_t x2,
+				u_register_t x3,
+				u_register_t x4,
+				void *cookie,
+				void *handle,
+				u_register_t flags)
+{
+
+	switch (smc_fid) {
+	default:
+		ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid);
+		break;
+	}
+
+	SMC_RET1(handle, SMC_UNK);
+}

plat/mediatek/mt8192/platform.mk

@@ -38,6 +38,7 @@ BL31_SOURCES    += common/desc_image_load.c                              \
                    ${MTK_PLAT}/common/drivers/pmic_wrap/pmic_wrap_init_v2.c \
                    ${MTK_PLAT}/common/drivers/uart/uart.c                \
                    ${MTK_PLAT}/common/mtk_plat_common.c                  \
+                   ${MTK_PLAT}/common/mtk_sip_svc.c                      \
                    ${MTK_PLAT}/common/params_setup.c                     \
                    ${MTK_PLAT_SOC}/aarch64/platform_common.c             \
                    ${MTK_PLAT_SOC}/aarch64/plat_helpers.S                \
@@ -47,6 +48,7 @@ BL31_SOURCES    += common/desc_image_load.c                              \
                    ${MTK_PLAT_SOC}/plat_topology.c                       \
                    ${MTK_PLAT_SOC}/plat_mt_gic.c                         \
                    ${MTK_PLAT_SOC}/plat_mt_cirq.c                        \
+                   ${MTK_PLAT_SOC}/plat_sip_calls.c                      \
                    ${MTK_PLAT_SOC}/drivers/gpio/mtgpio.c                 \
                    ${MTK_PLAT_SOC}/drivers/mcdi/mt_cpu_pm.c              \
                    ${MTK_PLAT_SOC}/drivers/mcdi/mt_cpu_pm_cpc.c          \