rockchip: Add rk3568 architecture core

RK3568 is a high-performance and low power quad-core application
processor designed for personal mobile internet device and AIoT
equipments.

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/include/configs/rk3568_common.h b/include/configs/rk3568_common.h
new file mode 100644
index 0000000..b656891
--- /dev/null
+++ b/include/configs/rk3568_common.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier:     GPL-2.0+ */
+/*
+ * (C) Copyright 2021 Rockchip Electronics Co., Ltd
+ */
+
+#ifndef __CONFIG_RK3568_COMMON_H
+#define __CONFIG_RK3568_COMMON_H
+
+#include "rockchip-common.h"
+
+#define CONFIG_SYS_CBSIZE		1024
+#define CONFIG_SKIP_LOWLEVEL_INIT
+
+#define COUNTER_FREQUENCY               24000000
+#define CONFIG_ROCKCHIP_STIMER_BASE	0xfdd1c020
+
+#define CONFIG_IRAM_BASE		0xfdcc0000
+
+#define CONFIG_SYS_INIT_SP_ADDR		0x00c00000
+#define CONFIG_SYS_LOAD_ADDR		0x00c00800
+#define CONFIG_SYS_BOOTM_LEN		(64 << 20)	/* 64M */
+
+#define CONFIG_SYS_SDRAM_BASE		0
+#define SDRAM_MAX_SIZE			0xf0000000
+
+#ifndef CONFIG_SPL_BUILD
+#define ENV_MEM_LAYOUT_SETTINGS		\
+	"scriptaddr=0x00c00000\0"	\
+	"pxefile_addr_r=0x00e00000\0"	\
+	"fdt_addr_r=0x0a100000\0"	\
+	"kernel_addr_r=0x02080000\0"	\
+	"ramdisk_addr_r=0x0a200000\0"
+
+#include <config_distro_bootcmd.h>
+#define CONFIG_EXTRA_ENV_SETTINGS		\
+	ENV_MEM_LAYOUT_SETTINGS			\
+	"fdtfile=" CONFIG_DEFAULT_FDT_FILE "\0" \
+	"partitions=" PARTS_DEFAULT		\
+	ROCKCHIP_DEVICE_SETTINGS		\
+	BOOTENV
+#endif
+
+#endif