board: toradex: add Toradex SMARC iMX95

Add support for the Toradex SMARC iMX95.

Link: https://www.toradex.com/computer-on-modules/smarc-arm-family/nxp-imx95
Link: https://www.toradex.com/products/carrier-board/smarc-development-board-kit
Signed-off-by: João Paulo Gonçalves <[email protected]>
Co-developed-by: Emanuele Ghidoli <[email protected]>
Signed-off-by: Emanuele Ghidoli <[email protected]>
Co-developed-by: Max Krummenacher <[email protected]>
Signed-off-by: Max Krummenacher <[email protected]>
Co-developed-by: Ernest Van Hoecke <[email protected]>
Signed-off-by: Ernest Van Hoecke <[email protected]>

6 files changed, 225 insertions, 0 deletions

diff --git a/board/toradex/smarc-imx95/Kconfig b/board/toradex/smarc-imx95/Kconfig
new file mode 100644
index 00000000000..97b2c3da188
--- /dev/null
+++ b/board/toradex/smarc-imx95/Kconfig
@@ -0,0 +1,36 @@
+if TARGET_TORADEX_SMARC_IMX95
+
+config SYS_BOARD
+	default "smarc-imx95"
+
+config SYS_VENDOR
+	default "toradex"
+
+config SYS_CONFIG_NAME
+	default "toradex-smarc-imx95"
+
+config TDX_CFG_BLOCK
+	default y
+
+config TDX_CFG_BLOCK_2ND_ETHADDR
+	default y
+
+config TDX_CFG_BLOCK_DEV
+	default "0"
+
+# Toradex config block in eMMC, at the end of 1st "boot sector"
+config TDX_CFG_BLOCK_OFFSET
+	default "-512"
+
+config TDX_CFG_BLOCK_PART
+	default "1"
+
+config TDX_HAVE_EEPROM_EXTRA
+	default y
+
+config TDX_HAVE_MMC
+	default y
+
+source "board/toradex/common/Kconfig"
+
+endif
diff --git a/board/toradex/smarc-imx95/MAINTAINERS b/board/toradex/smarc-imx95/MAINTAINERS
new file mode 100644
index 00000000000..73517d36f1f
--- /dev/null
+++ b/board/toradex/smarc-imx95/MAINTAINERS
@@ -0,0 +1,11 @@
+Toradex SMARC iMX95
+F:	arch/arm/dts/imx95-toradex-smarc.dtsi
+F:	arch/arm/dts/imx95-toradex-smarc-dev.dts
+F:	arch/arm/dts/imx95-toradex-smarc-dev-u-boot.dtsi
+F:	board/toradex/smarc-imx95/
+F:	configs/toradex-smarc-imx95_defconfig
+F:	doc/board/toradex/smarc-imx95.rst
+F:	include/configs/toradex-smarc-imx95.h
+M:	Francesco Dolcini <[email protected]>
+S:	Maintained
+W:	https://www.toradex.com/computer-on-modules/smarc-arm-family/nxp-imx95
diff --git a/board/toradex/smarc-imx95/Makefile b/board/toradex/smarc-imx95/Makefile
new file mode 100644
index 00000000000..e5d0b0c7e8c
--- /dev/null
+++ b/board/toradex/smarc-imx95/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2025 Toradex
+
+obj-y += smarc-imx95.o
+
+ifdef CONFIG_SPL_BUILD
+obj-y += spl.o
+endif
diff --git a/board/toradex/smarc-imx95/smarc-imx95.c b/board/toradex/smarc-imx95/smarc-imx95.c
new file mode 100644
index 00000000000..c2cf872d9f9
--- /dev/null
+++ b/board/toradex/smarc-imx95/smarc-imx95.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Copyright (C) 2025 Toradex */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <fdt_support.h>
+#include <init.h>
+
+#include "../common/tdx-cfg-block.h"
+
+int board_early_init_f(void)
+{
+	/* UART1: A55 */
+	init_uart_clk(0);
+
+	return 0;
+}
+
+int board_phys_sdram_size(phys_size_t *size)
+{
+	*size = PHYS_SDRAM_SIZE + PHYS_SDRAM_2_SIZE;
+
+	return 0;
+}
+
+#if IS_ENABLED(CONFIG_OF_LIBFDT) && IS_ENABLED(CONFIG_OF_BOARD_SETUP)
+int ft_board_setup(void *blob, struct bd_info *bd)
+{
+	return ft_common_board_setup(blob, bd);
+}
+#endif
diff --git a/board/toradex/smarc-imx95/smarc-imx95.env b/board/toradex/smarc-imx95/smarc-imx95.env
new file mode 100644
index 00000000000..b94250bbc52
--- /dev/null
+++ b/board/toradex/smarc-imx95/smarc-imx95.env
@@ -0,0 +1,20 @@
+boot_scripts=boot.scr
+boot_script_dhcp=boot.scr
+boot_targets=mmc1 mmc0 dhcp
+console=ttyLP1
+fdt_board=dev
+fdt_addr=0x9c400000
+fdt_addr_r=0x9c400000
+kernel_addr_r=CONFIG_SYS_LOAD_ADDR
+kernel_comp_addr_r=0x94400000
+kernel_comp_size=0x8000000
+ramdisk_addr_r=0x9c800000
+scriptaddr=0x9c600000
+
+update_uboot=
+		askenv confirm Did you load flash.bin (y/N)?;
+		if test $confirm = y; then
+			setexpr blkcnt ${filesize} + 0x1ff && setexpr blkcnt
+			${blkcnt} / 0x200; mmc dev 0 1; mmc write ${loadaddr} 0x0
+			${blkcnt};
+		fi
diff --git a/board/toradex/smarc-imx95/spl.c b/board/toradex/smarc-imx95/spl.c
new file mode 100644
index 00000000000..e0e39b8bb94
--- /dev/null
+++ b/board/toradex/smarc-imx95/spl.c
@@ -0,0 +1,119 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Copyright (C) 2025 Toradex */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/mu.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <asm/mach-imx/ele_api.h>
+#include <asm/sections.h>
+#include <asm/global_data.h>
+#include <clk.h>
+#include <dm/ofnode.h>
+#include <dm/uclass.h>
+#include <hang.h>
+#include <i2c.h>
+#include <init.h>
+#include <spl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define EC_I2C_BUS_NODE_PATH	"/soc/bus@42000000/i2c@42540000"
+
+int spl_board_boot_device(enum boot_device boot_dev_spl)
+{
+	switch (boot_dev_spl) {
+	case SD1_BOOT:
+	case MMC1_BOOT:
+		return BOOT_DEVICE_MMC1;
+	case SD2_BOOT:
+	case MMC2_BOOT:
+		return BOOT_DEVICE_MMC2;
+	case USB_BOOT:
+		return BOOT_DEVICE_BOARD;
+	default:
+		return BOOT_DEVICE_NONE;
+	}
+}
+
+static void ec_boot_notify(void)
+{
+	struct udevice *bus;
+	struct udevice *i2c_dev;
+	ofnode node;
+	int ret;
+	u8 val = 0x03;
+
+	node = ofnode_path(EC_I2C_BUS_NODE_PATH);
+	if (!ofnode_valid(node)) {
+		puts("Failed to find Toradex EC I2C BUS node\n");
+		return;
+	}
+
+	ret = uclass_get_device_by_ofnode(UCLASS_I2C, node, &bus);
+	if (ret) {
+		puts("Failed to get Toradex EC I2C BUS\n");
+		return;
+	}
+
+	ret = dm_i2c_probe(bus, 0x28, 0, &i2c_dev);
+	if (ret) {
+		puts("Toradex EC not found\n");
+		return;
+	}
+
+	/* USB configuration before this command (when SoC starts in recovery):
+	 * - SoC USB1 -> Smarc USB0
+	 * - SoC USB2 -> NC
+	 * After the command:
+	 * - SoC USB1 -> SoM hub -> Smarc USB1, USB2, USB3 and USB4
+	 * - SoC USB2 -> Smarc USB0
+	 */
+	ret = dm_i2c_write(i2c_dev, 0xD0, &val, 1);
+	if (ret)
+		puts("Cannot send command to Toradex EC\n");
+}
+
+void spl_board_init(void)
+{
+	int ret;
+
+	ret = ele_start_rng();
+	if (ret)
+		printf("Fail to start RNG: %d\n", ret);
+}
+
+void board_init_f(ulong dummy)
+{
+	int ret;
+
+	/* Clear the BSS. */
+	memset(__bss_start, 0, __bss_end - __bss_start);
+
+	if (IS_ENABLED(CONFIG_SPL_RECOVER_DATA_SECTION))
+		spl_save_restore_data();
+
+	timer_init();
+
+	/* Need dm_init() to run before any SCMI calls */
+	spl_early_init();
+
+	/* Need to enable SCMI drivers and ELE driver before console */
+	ret = imx9_probe_mu();
+	if (ret)
+		hang(); /* MU not probed, nothing can be outputed, hang */
+
+	arch_cpu_init();
+
+	board_early_init_f();
+
+	preloader_console_init();
+
+	debug("SOC: 0x%x\n", gd->arch.soc_rev);
+	debug("LC: 0x%x\n", gd->arch.lifecycle);
+
+	ec_boot_notify();
+	get_reset_reason(true, false);
+
+	board_init_r(NULL, 0);
+}