board: stm32: add stm32f469-discovery board support

This board offers :

 _ STM32F469NIH6 microcontroller featuring 2 Mbytes of Flash memory
   and 324 Kbytes of RAM in BGA216 package
 _ On-board ST-LINK/V2-1 SWD debugger, supporting USB reenumeration capability:
     _ Mbed-enabled (mbed.org)
     _ USB functions: USB virtual COM port, mass storage, debug port
 _ 4 inches 800x480 pixel TFT color LCD with MIPI DSI interface and capacitive
   touch screen
 _ SAI Audio DAC, with a stereo headphone output jack
 _ 3 MEMS microphones
 _ MicroSD card connector
 _ I2C extension connector
 _ 4Mx32bit SDRAM
 _ 128-Mbit Quad-SPI NOR Flash
 _ Reset and wake-up buttons
 _ 4 color user LEDs
 _ USB OTG FS with Micro-AB connector
 _ Three power supply options:
 _ Expansion connectors and Arduino™ UNO V3 connectors

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

4 files changed, 107 insertions, 0 deletions

diff --git a/board/st/stm32f469-discovery/Kconfig b/board/st/stm32f469-discovery/Kconfig
new file mode 100644
index 0000000000..de61b6f2f6
--- /dev/null
+++ b/board/st/stm32f469-discovery/Kconfig
@@ -0,0 +1,19 @@
+if TARGET_STM32F469_DISCOVERY
+
+config SYS_BOARD
+	string
+	default "stm32f469-discovery"
+
+config SYS_VENDOR
+	string
+	default "st"
+
+config SYS_SOC
+	string
+	default "stm32f4"
+
+config SYS_CONFIG_NAME
+	string
+	default "stm32f469-discovery"
+
+endif
diff --git a/board/st/stm32f469-discovery/MAINTAINERS b/board/st/stm32f469-discovery/MAINTAINERS
new file mode 100644
index 0000000000..d3c791a5f5
--- /dev/null
+++ b/board/st/stm32f469-discovery/MAINTAINERS
@@ -0,0 +1,6 @@
+STM32F469-DISCOVERY BOARD
+M:	Patrice Chotard <patrice.chotard@st.com>
+S:	Maintained
+F:	board/st/stm32f469-discovery/
+F:	include/configs/stm32f469-discovery.h
+F:	configs/stm32f469-discovery_defconfig
diff --git a/board/st/stm32f469-discovery/Makefile b/board/st/stm32f469-discovery/Makefile
new file mode 100644
index 0000000000..9ecd61e773
--- /dev/null
+++ b/board/st/stm32f469-discovery/Makefile
@@ -0,0 +1,8 @@
+#
+# Copyright (C) STMicroelectronics SA 2017
+# Author(s): Patrice CHOTARD, <patrice.chotard@st.com> for STMicroelectronics.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	:= stm32f469-discovery.o
diff --git a/board/st/stm32f469-discovery/stm32f469-discovery.c b/board/st/stm32f469-discovery/stm32f469-discovery.c
new file mode 100644
index 0000000000..36f7b2e8e1
--- /dev/null
+++ b/board/st/stm32f469-discovery/stm32f469-discovery.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2017
+ * Author(s): Patrice CHOTARD, <patrice.chotard@st.com> for STMicroelectronics.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+
+#include <asm/io.h>
+#include <asm/arch/stm32.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	int rv;
+	struct udevice *dev;
+
+	rv = uclass_get_device(UCLASS_RAM, 0, &dev);
+	if (rv) {
+		debug("DRAM init failed: %d\n", rv);
+		return rv;
+	}
+
+	if (fdtdec_setup_memory_size() != 0)
+		rv = -EINVAL;
+
+	return rv;
+}
+
+int dram_init_banksize(void)
+{
+	fdtdec_setup_memory_banksize();
+
+	return 0;
+}
+
+u32 get_board_rev(void)
+{
+	return 0;
+}
+
+int board_early_init_f(void)
+{
+	return 0;
+}
+
+int board_init(void)
+{
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+	return 0;
+}
+
+#ifdef CONFIG_MISC_INIT_R
+int misc_init_r(void)
+{
+	char serialno[25];
+	u32 u_id_low, u_id_mid, u_id_high;
+
+	if (!env_get("serial#")) {
+		u_id_low  = readl(&STM32_U_ID->u_id_low);
+		u_id_mid  = readl(&STM32_U_ID->u_id_mid);
+		u_id_high = readl(&STM32_U_ID->u_id_high);
+		sprintf(serialno, "%08x%08x%08x",
+			u_id_high, u_id_mid, u_id_low);
+		env_set("serial#", serialno);
+	}
+
+	return 0;
+}
+#endif