plat: marvell: Add support for Armada-37xx SoC platform

Add supprot for Marvell platforms based on Armada-37xx SoC.
This includes support for the official Armada-3720 modular
development board and EspressoBin community board.
The Armada-37xx SoC contains dual Cortex-A53 Application CPU,
single secure CPU (Cortex-M3) and the following interfaces:
- SATA 3.0
- USB 3.0 and USB 2.0
- PCIe
- SDIO (supports boot from eMMC)
- SPI
- UART
- I2c
- Gigabit Ethernet

Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
diff --git a/plat/marvell/a3700/common/marvell_plat_config.c b/plat/marvell/a3700/common/marvell_plat_config.c
new file mode 100644
index 0000000..85a4201
--- /dev/null
+++ b/plat/marvell/a3700/common/marvell_plat_config.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier:	BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#include <bl_common.h>
+#include <io_addr_dec.h>
+#include <mvebu_def.h>
+
+struct dec_win_config io_dec_win_conf[] = {
+	/* dec_reg_base  win_attr  max_dram_win  max_remap  win_offset */
+	{0xc000,         0x3d,     2,       0,        0x08}, /* USB */
+	{0xc100,         0x3d,     3,       0,        0x10}, /* USB3 */
+	{0xc200,         0x3d,     2,       0,        0x10}, /* DMA */
+	{0xc300,         0x3d,     2,       0,        0x10}, /* NETA0 */
+	{0xc400,         0x3d,     2,       0,        0x10}, /* NETA1 */
+	{0xc500,         0x3d,     2,       0,        0x10}, /* PCIe */
+	{0xc800,         0x3d,     3,       0,        0x10}, /* SATA */
+	{0xca00,         0x3d,     3,       0,        0x08}, /* SD */
+	{0xcb00,         0x3d,     3,       0,        0x10}, /* eMMC */
+	{0xce00,	 0x3d,	   2,	    0,        0x08}, /* EIP97 */
+};
+
+int marvell_get_io_dec_win_conf(struct dec_win_config **win, uint32_t *size)
+{
+	*win = io_dec_win_conf;
+	*size = sizeof(io_dec_win_conf)/sizeof(struct dec_win_config);
+
+	return 0;
+}
+