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>

arch/arm/mach-stm32/stm32f4/Kconfig

@@ -3,6 +3,10 @@ if STM32F4
 config TARGET_STM32F429_DISCOVERY
 	bool "STM32F429 Discovery board"
 
+config TARGET_STM32F469_DISCOVERY
+	bool "STM32F469 Discovery board"
+
 source "board/st/stm32f429-discovery/Kconfig"
+source "board/st/stm32f469-discovery/Kconfig"
 
 endif

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

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

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

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

configs/stm32f469-discovery_defconfig

@@ -0,0 +1,42 @@
+CONFIG_ARM=y
+CONFIG_STM32=y
+CONFIG_SYS_MALLOC_F_LEN=0xF00
+CONFIG_STM32F4=y
+CONFIG_TARGET_STM32F469_DISCOVERY=y
+CONFIG_DEFAULT_DEVICE_TREE="stm32f469-disco"
+CONFIG_BOOTDELAY=3
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_BOARD_EARLY_INIT_F=y
+CONFIG_HUSH_PARSER=y
+CONFIG_SYS_PROMPT="U-Boot > "
+CONFIG_CMD_BOOTZ=y
+# CONFIG_CMD_BOOTEFI_HELLO_COMPILE is not set
+CONFIG_CMD_IMLS=y
+CONFIG_CMD_GPT=y
+# CONFIG_RANDOM_UUID is not set
+CONFIG_CMD_MMC=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_TIMER=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+# CONFIG_DOS_PARTITION is not set
+CONFIG_OF_CONTROL=y
+CONFIG_OF_EMBED=y
+# CONFIG_BLK is not set
+CONFIG_CLK=y
+CONFIG_DM_GPIO=y
+CONFIG_MISC=y
+CONFIG_STM32_RCC=y
+CONFIG_DM_MMC=y
+CONFIG_ARM_PL180_MMCI=y
+CONFIG_MTD_NOR_FLASH=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_STM32=y
+CONFIG_RAM=y
+CONFIG_STM32_SDRAM=y
+CONFIG_DM_RESET=y
+CONFIG_STM32_RESET=y
+CONFIG_STM32X7_SERIAL=y

include/configs/stm32f469-discovery.h

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) STMicroelectronics SA 2017
+ * Author(s): Patrice CHOTARD, <patrice.chotard@st.com> for STMicroelectronics.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#define CONFIG_STM32F4DISCOVERY
+
+#define CONFIG_MISC_INIT_R
+
+#define CONFIG_SYS_FLASH_BASE		0x08000000
+
+#define CONFIG_SYS_INIT_SP_ADDR		0x10010000
+#define CONFIG_SYS_TEXT_BASE		0x08000000
+
+#define CONFIG_SYS_ICACHE_OFF
+#define CONFIG_SYS_DCACHE_OFF
+
+/*
+ * Configuration of the external SDRAM memory
+ */
+#define CONFIG_NR_DRAM_BANKS		1
+#define CONFIG_SYS_RAM_FREQ_DIV		2
+#define CONFIG_SYS_RAM_BASE		0x00000000
+#define CONFIG_SYS_SDRAM_BASE		CONFIG_SYS_RAM_BASE
+#define CONFIG_SYS_LOAD_ADDR		0x00400000
+#define CONFIG_LOADADDR			0x00400000
+
+#define CONFIG_SYS_MAX_FLASH_SECT	12
+#define CONFIG_SYS_MAX_FLASH_BANKS	2
+
+#define CONFIG_ENV_OFFSET		(256 << 10)
+#define CONFIG_ENV_SECT_SIZE		(128 << 10)
+#define CONFIG_ENV_SIZE			(8 << 10)
+
+#define CONFIG_STM32_FLASH
+
+#define CONFIG_STM32_HSE_HZ		8000000
+#define CONFIG_SYS_CLK_FREQ		180000000 /* 180 MHz */
+#define CONFIG_SYS_HZ_CLOCK		1000000	/* Timer is clocked at 1MHz */
+
+#define CONFIG_CMDLINE_TAG
+#define CONFIG_SETUP_MEMORY_TAGS
+#define CONFIG_INITRD_TAG
+#define CONFIG_REVISION_TAG
+
+#define CONFIG_SYS_CBSIZE		1024
+
+#define CONFIG_SYS_MALLOC_LEN		(1 * 1024 * 1024)
+
+#define CONFIG_BOOTCOMMAND						\
+	"run boot_sd"
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"boot_sd=mmc dev 0;fatload mmc 0 0x00700000 stm32f469-disco.dtb; fatload mmc 0 0x00008000 zImage; icache off; bootz 0x00008000 - 0x00700000"
+
+/*
+ * Command line configuration.
+ */
+#define CONFIG_SYS_LONGHELP
+#define CONFIG_AUTO_COMPLETE
+#define CONFIG_CMDLINE_EDITING
+
+#endif /* __CONFIG_H */