On 6/7/25 11:37, Dario Binacchi wrote:
> The board includes an STM32H747XI SoC with the following resources:
> - 2 Mbytes Flash
> - 1 Mbyte SRAM
> - LCD-TFT controller
> - MIPI-DSI interface
> - FD-CAN
> - USB 2.0 high-speed/full-speed
> - Ethernet MAC
> - camera interface
>
> Detailed information can be found at:
> https://www.st.com/en/evaluation-tools/stm32h747i-disco.html
>
> Signed-off-by: Dario Binacchi <dario.binac...@amarulasolutions.com>
>
> ---
>
> arch/arm/mach-stm32/stm32h7/Kconfig | 4 +++
> board/st/stm32h747-disco/Kconfig | 15 ++++++++
> board/st/stm32h747-disco/MAINTAINERS | 7 ++++
> board/st/stm32h747-disco/Makefile | 6 ++++
> board/st/stm32h747-disco/stm32h747-disco.c | 42 ++++++++++++++++++++++
> configs/stm32h747-disco_defconfig | 35 ++++++++++++++++++
> drivers/clk/stm32/clk-stm32h7.c | 5 +++
> include/configs/stm32h747-disco.h | 32 +++++++++++++++++
> 8 files changed, 146 insertions(+)
> create mode 100644 board/st/stm32h747-disco/Kconfig
> create mode 100644 board/st/stm32h747-disco/MAINTAINERS
> create mode 100644 board/st/stm32h747-disco/Makefile
> create mode 100644 board/st/stm32h747-disco/stm32h747-disco.c
> create mode 100644 configs/stm32h747-disco_defconfig
> create mode 100644 include/configs/stm32h747-disco.h
>
> diff --git a/arch/arm/mach-stm32/stm32h7/Kconfig
> b/arch/arm/mach-stm32/stm32h7/Kconfig
> index 70233a4b23cd..72f20c477d04 100644
> --- a/arch/arm/mach-stm32/stm32h7/Kconfig
> +++ b/arch/arm/mach-stm32/stm32h7/Kconfig
> @@ -6,11 +6,15 @@ config TARGET_STM32H743_DISCO
> config TARGET_STM32H743_EVAL
> bool "STM32H743 Evaluation board"
>
> +config TARGET_STM32H747_DISCO
> + bool "STM32H747 Discovery board"
> +
> config TARGET_STM32H750_ART_PI
> bool "STM32H750 ART Pi board"
>
> source "board/st/stm32h743-eval/Kconfig"
> source "board/st/stm32h743-disco/Kconfig"
> +source "board/st/stm32h747-disco/Kconfig"
> source "board/st/stm32h750-art-pi/Kconfig"
>
> endif
> diff --git a/board/st/stm32h747-disco/Kconfig
> b/board/st/stm32h747-disco/Kconfig
> new file mode 100644
> index 000000000000..a7b2c09a327f
> --- /dev/null
> +++ b/board/st/stm32h747-disco/Kconfig
> @@ -0,0 +1,15 @@
> +if TARGET_STM32H747_DISCO
> +
> +config SYS_BOARD
> + default "stm32h747-disco"
> +
> +config SYS_VENDOR
> + default "st"
> +
> +config SYS_SOC
> + default "stm32h7"
> +
> +config SYS_CONFIG_NAME
> + default "stm32h747-disco"
> +
> +endif
> diff --git a/board/st/stm32h747-disco/MAINTAINERS
> b/board/st/stm32h747-disco/MAINTAINERS
> new file mode 100644
> index 000000000000..d48649f773f3
> --- /dev/null
> +++ b/board/st/stm32h747-disco/MAINTAINERS
> @@ -0,0 +1,7 @@
> +STM32H747 DISCOVERY BOARD
> +M: Dario Binacchi <dario.binac...@amarulasolutions.com>
> +S: Maintained
> +F: board/st/stm32h747-disco
> +F: include/configs/stm32h747-disco.h
> +F: configs/stm32h747-disco_defconfig
> +F: arch/arm/dts/stm32h747*
> diff --git a/board/st/stm32h747-disco/Makefile
> b/board/st/stm32h747-disco/Makefile
> new file mode 100644
> index 000000000000..e11f052cc88f
> --- /dev/null
> +++ b/board/st/stm32h747-disco/Makefile
> @@ -0,0 +1,6 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +#
> +# Copyright (c) 2025 Dario Binacchi <dario.binac...@amarulasolutions.com>
> +#
> +
> +obj-y := stm32h747-disco.o
> diff --git a/board/st/stm32h747-disco/stm32h747-disco.c
> b/board/st/stm32h747-disco/stm32h747-disco.c
> new file mode 100644
> index 000000000000..be0884bdeb4d
> --- /dev/null
> +++ b/board/st/stm32h747-disco/stm32h747-disco.c
> @@ -0,0 +1,42 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * stm32h747i-disco support
> + *
> + * Copyright (C) 2025 Dario Binacchi <dario.binac...@amarulasolutions.com>
> + */
> +
> +#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_init(void)
> +{
> + return 0;
> +}
> diff --git a/configs/stm32h747-disco_defconfig
> b/configs/stm32h747-disco_defconfig
> new file mode 100644
> index 000000000000..8a0c72450d1e
> --- /dev/null
> +++ b/configs/stm32h747-disco_defconfig
> @@ -0,0 +1,35 @@
> +CONFIG_ARM=y
> +CONFIG_ARCH_STM32=y
> +CONFIG_TEXT_BASE=0x08000000
> +CONFIG_SYS_MALLOC_LEN=0x100000
> +CONFIG_NR_DRAM_BANKS=1
> +CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
> +CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x24040000
> +CONFIG_ENV_SIZE=0x2000
> +CONFIG_DEFAULT_DEVICE_TREE="st/stm32h747i-disco"
> +CONFIG_OF_LIBFDT_OVERLAY=y
> +CONFIG_SYS_LOAD_ADDR=0xd0400000
> +CONFIG_STM32H7=y
> +CONFIG_TARGET_STM32H747_DISCO=y
> +CONFIG_DISTRO_DEFAULTS=y
> +CONFIG_BOOTDELAY=3
> +CONFIG_AUTOBOOT_KEYED=y
> +CONFIG_AUTOBOOT_PROMPT="Hit SPACE in %d seconds to stop autoboot.\n"
> +CONFIG_AUTOBOOT_STOP_STR=" "
> +CONFIG_DEFAULT_FDT_FILE="stm32h747i-disco"
> +CONFIG_SYS_CBSIZE=256
> +CONFIG_SYS_PBSIZE=282
> +# CONFIG_DISPLAY_CPUINFO is not set
> +CONFIG_SYS_PROMPT="U-Boot > "
> +CONFIG_CMD_GPT=y
> +CONFIG_CMD_MMC=y
> +# CONFIG_CMD_SETEXPR is not set
> +CONFIG_CMD_CACHE=y
> +CONFIG_CMD_TIMER=y
> +CONFIG_CMD_EXT4_WRITE=y
> +# CONFIG_ISO_PARTITION is not set
> +CONFIG_OF_CONTROL=y
> +CONFIG_SYS_RELOC_GD_ENV_ADDR=y
> +CONFIG_NO_NET=y
> +CONFIG_STM32_SDMMC2=y
> +# CONFIG_PINCTRL_FULL is not set
> diff --git a/drivers/clk/stm32/clk-stm32h7.c b/drivers/clk/stm32/clk-stm32h7.c
> index 6acf2ff0a8fb..aa3be414a29f 100644
> --- a/drivers/clk/stm32/clk-stm32h7.c
> +++ b/drivers/clk/stm32/clk-stm32h7.c
> @@ -114,6 +114,7 @@
> #define QSPISRC_PER_CK 3
>
> #define PWR_CR3 0x0c
> +#define PWR_CR3_LDOEN BIT(1)
> #define PWR_CR3_SCUEN BIT(2)
> #define PWR_D3CR 0x18
> #define PWR_D3CR_VOS_MASK GENMASK(15, 14)
> @@ -375,7 +376,11 @@ int configure_clocks(struct udevice *dev)
> clrsetbits_le32(pwr_base + PWR_D3CR, PWR_D3CR_VOS_MASK,
> VOS_SCALE_1 << PWR_D3CR_VOS_SHIFT);
> /* Lock supply configuration update */
> +#if IS_ENABLED(CONFIG_TARGET_STM32H747_DISCO)
> + clrbits_le32(pwr_base + PWR_CR3, PWR_CR3_LDOEN);
> +#else
> clrbits_le32(pwr_base + PWR_CR3, PWR_CR3_SCUEN);
> +#endif
> while (!(readl(pwr_base + PWR_D3CR) & PWR_D3CR_VOSREADY))
> ;
>
> diff --git a/include/configs/stm32h747-disco.h
> b/include/configs/stm32h747-disco.h
> new file mode 100644
> index 000000000000..393445a8ae1f
> --- /dev/null
> +++ b/include/configs/stm32h747-disco.h
> @@ -0,0 +1,32 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +/*
> + * Copyright (C) 2025 Dario Binacchi <dario.binac...@amarulasolutions.com>
> + */
> +
> +#ifndef __CONFIG_H
> +#define __CONFIG_H
> +
> +#include <config.h>
> +#include <linux/sizes.h>
> +
> +/* For booting Linux, use the first 16MB of memory */
> +#define CFG_SYS_BOOTMAPSZ SZ_16M
> +
> +#define CFG_SYS_FLASH_BASE 0x08000000
> +
> +#define CFG_SYS_HZ_CLOCK 1000000
> +
> +#define BOOT_TARGET_DEVICES(func) \
> + func(MMC, mmc, 0)
> +
> +#include <config_distro_bootcmd.h>
> +#define CFG_EXTRA_ENV_SETTINGS \
> + "kernel_addr_r=0xD0008000\0" \
> + "fdtfile=stm32h747i-disco.dtb\0" \
> + "fdt_addr_r=0xD0408000\0" \
> + "scriptaddr=0xD0418000\0" \
> + "pxefile_addr_r=0xD0428000\0" \
> + "ramdisk_addr_r=0xD0438000\0" \
> + BOOTENV
> +
> +#endif /* __CONFIG_H */
Reviewed-by: Patrice Chotard <patrice.chot...@foss.st.com>
Thanks
Patrice
