arm: rockchip: Add RK3308 SOC support

RK3308 is a quad Cortex A35 based SOC with rich audio
interfaces(I2S/PCM/TDM/PDM/SPDIF/VAD/HDMI ARC), which
designed for intelligent voice interaction and audio
input/output processing.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/include/configs/rk3308_common.h b/include/configs/rk3308_common.h
new file mode 100644
index 0000000..a67d3d7
--- /dev/null
+++ b/include/configs/rk3308_common.h
@@ -0,0 +1,58 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2017 Rockchip Electronics Co., Ltd
+ */
+
+#ifndef __CONFIG_RK3308_COMMON_H
+#define __CONFIG_RK3308_COMMON_H
+
+#include "rockchip-common.h"
+
+#define CONFIG_SYS_CBSIZE		1024
+#define CONFIG_SKIP_LOWLEVEL_INIT
+#define CONFIG_SYS_MAX_NAND_DEVICE	1
+#define CONFIG_SYS_NAND_ONFI_DETECTION
+#define CONFIG_SYS_NAND_PAGE_SIZE	2048
+#define CONFIG_SYS_NAND_PAGE_COUNT	64
+#define CONFIG_SYS_NAND_SIZE		(256 * 1024 * 1024)
+#define CONFIG_SPL_MAX_SIZE		0x20000
+#define CONFIG_SPL_BSS_START_ADDR	0x00400000
+#define CONFIG_SPL_BSS_MAX_SIZE		0x2000
+#define CONFIG_SYS_SPI_U_BOOT_OFFS	0x8000
+
+#define CONFIG_SYS_NS16550_MEM32
+
+#define CONFIG_ROCKCHIP_STIMER_BASE	0xff1b00a0
+#define CONFIG_IRAM_BASE		0xfff80000
+#define CONFIG_SYS_INIT_SP_ADDR		0x00800000
+#define CONFIG_SYS_LOAD_ADDR		0x00C00800
+#define CONFIG_SPL_STACK		0x00400000
+#define CONFIG_SYS_BOOTM_LEN		(64 << 20)	/* 64M */
+
+#define COUNTER_FREQUENCY		24000000
+
+#define CONFIG_SYS_BOOTM_LEN	(64 << 20)	/* 64M */
+
+#define CONFIG_SYS_SDRAM_BASE		0
+#define SDRAM_MAX_SIZE			0xff000000
+#define SDRAM_BANK_SIZE			(2UL << 30)
+
+#ifndef CONFIG_SPL_BUILD
+
+#define ENV_MEM_LAYOUT_SETTINGS \
+	"scriptaddr=0x00500000\0" \
+	"pxefile_addr_r=0x00600000\0" \
+	"fdt_addr_r=0x01f00000\0" \
+	"kernel_addr_r=0x00680000\0" \
+	"ramdisk_addr_r=0x04000000\0"
+
+#include <config_distro_bootcmd.h>
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	ENV_MEM_LAYOUT_SETTINGS \
+	"partitions=" PARTS_DEFAULT \
+	ROCKCHIP_DEVICE_SETTINGS \
+	BOOTENV
+
+#endif
+
+#endif