board: Add rt-thread art-pi board support

All these files are add for support rt-thread art-pi board
- add board/st/stm32h750-art-pi, defconfig, header support for u-boot

for more information about art-pi, please goto:
https://art-pi.gitee.io/website/

Signed-off-by: dillon min <dillon.minfei@gmail.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>

4 files changed, 90 insertions, 0 deletions

diff --git a/board/st/stm32h750-art-pi/Kconfig b/board/st/stm32h750-art-pi/Kconfig
new file mode 100644
index 0000000000..c31b9849fd
--- /dev/null
+++ b/board/st/stm32h750-art-pi/Kconfig
@@ -0,0 +1,19 @@
+if TARGET_STM32H750_ART_PI
+
+config SYS_BOARD
+	string
+	default "stm32h750-art-pi"
+
+config SYS_VENDOR
+	string
+	default "st"
+
+config SYS_SOC
+	string
+	default "stm32h7"
+
+config SYS_CONFIG_NAME
+	string
+	default "stm32h750-art-pi"
+
+endif
diff --git a/board/st/stm32h750-art-pi/MAINTAINERS b/board/st/stm32h750-art-pi/MAINTAINERS
new file mode 100644
index 0000000000..9578833068
--- /dev/null
+++ b/board/st/stm32h750-art-pi/MAINTAINERS
@@ -0,0 +1,7 @@
+STM32H750 ART PI BOARD
+M:	Dillon Min <dillon.minfei@gmail.com>
+S:	Maintained
+F:	board/st/stm32h750-art-pi
+F:	include/configs/stm32h750-art-pi.h
+F:	configs/stm32h750-art-pi_defconfig
+F:	arch/arm/dts/stm32h7*
diff --git a/board/st/stm32h750-art-pi/Makefile b/board/st/stm32h750-art-pi/Makefile
new file mode 100644
index 0000000000..a06de87526
--- /dev/null
+++ b/board/st/stm32h750-art-pi/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2021, RT-Thread - All Rights Reserved
+# Author(s): Dillon Min, <dillon.minfei@gmail.com> for RT-Thread.
+
+obj-y	:= stm32h750-art-pi.o
diff --git a/board/st/stm32h750-art-pi/stm32h750-art-pi.c b/board/st/stm32h750-art-pi/stm32h750-art-pi.c
new file mode 100644
index 0000000000..5785b2e575
--- /dev/null
+++ b/board/st/stm32h750-art-pi/stm32h750-art-pi.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021, STMicroelectronics - All Rights Reserved
+ * Author(s): Dillon Min <dillon.minfei@gmail.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <init.h>
+#include <log.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+	if (ret) {
+		debug("DRAM init failed: %d\n", ret);
+		return ret;
+	}
+
+	if (fdtdec_setup_mem_size_base() != 0)
+		ret = -EINVAL;
+
+	return ret;
+}
+
+int dram_init_banksize(void)
+{
+	fdtdec_setup_memory_banksize();
+
+	return 0;
+}
+
+int board_early_init_f(void)
+{
+	return 0;
+}
+
+u32 get_board_rev(void)
+{
+	return 0;
+}
+
+int board_late_init(void)
+{
+	return 0;
+}
+
+int board_init(void)
+{
+	gd->bd->bi_boot_params = gd->bd->bi_dram[0].start + 0x100;
+	return 0;
+}