diff --git a/board/dhelectronics/dh_stm32mp1/Makefile b/board/dhelectronics/dh_stm32mp1/Makefile
index c77a1e3a84..e8f218da08 100644
--- a/board/dhelectronics/dh_stm32mp1/Makefile
+++ b/board/dhelectronics/dh_stm32mp1/Makefile
@@ -8,4 +8,6 @@ obj-y += ../../st/stm32mp1/spl.o
 endif
 
 obj-y += ../../st/stm32mp1/board.o board.o
+
 obj-$(CONFIG_SYS_MTDPARTS_RUNTIME) += ../../st/common/stm32mp_mtdparts.o
+obj-$(CONFIG_SET_DFU_ALT_INFO) += ../../st/common/stm32mp_dfu.o
diff --git a/board/dhelectronics/dh_stm32mp1/board.c b/board/dhelectronics/dh_stm32mp1/board.c
index 2baa36278c..bd6540a2aa 100644
--- a/board/dhelectronics/dh_stm32mp1/board.c
+++ b/board/dhelectronics/dh_stm32mp1/board.c
@@ -526,56 +526,6 @@ int ft_board_setup(void *blob, bd_t *bd)
 }
 #endif
 
-#ifdef CONFIG_SET_DFU_ALT_INFO
-#define DFU_ALT_BUF_LEN SZ_1K
-
-static void board_get_alt_info(const char *dev, char *buff)
-{
-	char var_name[32] = "dfu_alt_info_";
-	int ret;
-
-	ALLOC_CACHE_ALIGN_BUFFER(char, tmp_alt, DFU_ALT_BUF_LEN);
-
-	/* name of env variable to read = dfu_alt_info_<dev> */
-	strcat(var_name, dev);
-	ret = env_get_f(var_name, tmp_alt, DFU_ALT_BUF_LEN);
-	if (ret) {
-		if (buff[0] != '\0')
-			strcat(buff, "&");
-		strncat(buff, tmp_alt, DFU_ALT_BUF_LEN);
-	}
-}
-
-void set_dfu_alt_info(char *interface, char *devstr)
-{
-	struct udevice *dev;
-
-	ALLOC_CACHE_ALIGN_BUFFER(char, buf, DFU_ALT_BUF_LEN);
-
-	if (env_get("dfu_alt_info"))
-		return;
-
-	memset(buf, 0, sizeof(buf));
-
-	/* probe all MTD devices */
-	mtd_probe_devices();
-
-	board_get_alt_info("ram", buf);
-
-	if (!uclass_get_device(UCLASS_MMC, 0, &dev))
-		board_get_alt_info("mmc0", buf);
-
-	if (!uclass_get_device(UCLASS_MMC, 1, &dev))
-		board_get_alt_info("mmc1", buf);
-
-	if (!uclass_get_device(UCLASS_SPI_FLASH, 0, &dev))
-		board_get_alt_info("nor0", buf);
-
-	env_set("dfu_alt_info", buf);
-	puts("DFU alt info setting: done\n");
-}
-#endif
-
 static void board_copro_image_process(ulong fw_image, size_t fw_size)
 {
 	int ret, id = 0; /* Copro id fixed to 0 as only one coproc on mp1 */
diff --git a/board/st/common/Makefile b/board/st/common/Makefile
index 4bb8b49867..aa030bacd8 100644
--- a/board/st/common/Makefile
+++ b/board/st/common/Makefile
@@ -7,4 +7,5 @@ obj-$(CONFIG_CMD_STBOARD) += cmd_stboard.o
 
 ifeq ($(CONFIG_ARCH_STM32MP),y)
 obj-$(CONFIG_SYS_MTDPARTS_RUNTIME) += stm32mp_mtdparts.o
+obj-$(CONFIG_SET_DFU_ALT_INFO) += stm32mp_dfu.o
 endif
diff --git a/board/st/common/stm32mp_dfu.c b/board/st/common/stm32mp_dfu.c
new file mode 100644
index 0000000000..99ea21ce15
--- /dev/null
+++ b/board/st/common/stm32mp_dfu.c
@@ -0,0 +1,151 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2020, STMicroelectronics - All Rights Reserved
+ */
+
+#include <common.h>
+#include <dfu.h>
+#include <env.h>
+#include <memalign.h>
+#include <misc.h>
+#include <mtd.h>
+#include <mtd_node.h>
+
+#define DFU_ALT_BUF_LEN SZ_1K
+
+static void board_get_alt_info(const char *dev, char *buff)
+{
+	char var_name[32] = "dfu_alt_info_";
+	int ret;
+
+	ALLOC_CACHE_ALIGN_BUFFER(char, tmp_alt, DFU_ALT_BUF_LEN);
+
+	/* name of env variable to read = dfu_alt_info_<dev> */
+	strcat(var_name, dev);
+	ret = env_get_f(var_name, tmp_alt, DFU_ALT_BUF_LEN);
+	if (ret) {
+		if (buff[0] != '\0')
+			strcat(buff, "&");
+		strncat(buff, tmp_alt, DFU_ALT_BUF_LEN);
+	}
+}
+
+void set_dfu_alt_info(char *interface, char *devstr)
+{
+	struct udevice *dev;
+	struct mtd_info *mtd;
+
+	ALLOC_CACHE_ALIGN_BUFFER(char, buf, DFU_ALT_BUF_LEN);
+
+	if (env_get("dfu_alt_info"))
+		return;
+
+	memset(buf, 0, sizeof(buf));
+
+	/* probe all MTD devices */
+	mtd_probe_devices();
+
+	board_get_alt_info("ram", buf);
+
+	if (!uclass_get_device(UCLASS_MMC, 0, &dev))
+		board_get_alt_info("mmc0", buf);
+
+	if (!uclass_get_device(UCLASS_MMC, 1, &dev))
+		board_get_alt_info("mmc1", buf);
+
+	if (!uclass_get_device(UCLASS_SPI_FLASH, 0, &dev))
+		board_get_alt_info("nor0", buf);
+
+	mtd = get_mtd_device_nm("nand0");
+	if (!IS_ERR_OR_NULL(mtd))
+		board_get_alt_info("nand0", buf);
+
+	mtd = get_mtd_device_nm("spi-nand0");
+	if (!IS_ERR_OR_NULL(mtd))
+		board_get_alt_info("spi-nand0", buf);
+
+#ifdef CONFIG_DFU_VIRT
+	strncat(buf, "&virt 0=OTP", DFU_ALT_BUF_LEN);
+
+	if (IS_ENABLED(CONFIG_PMIC_STPMIC1))
+		strncat(buf, "&virt 1=PMIC", DFU_ALT_BUF_LEN);
+#endif
+
+	env_set("dfu_alt_info", buf);
+	puts("DFU alt info setting: done\n");
+}
+
+#if CONFIG_IS_ENABLED(DFU_VIRT)
+#include <dfu.h>
+#include <power/stpmic1.h>
+
+static int dfu_otp_read(u64 offset, u8 *buffer, long *size)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = uclass_get_device_by_driver(UCLASS_MISC,
+					  DM_GET_DRIVER(stm32mp_bsec),
+					  &dev);
+	if (ret)
+		return ret;
+
+	ret = misc_read(dev, offset + STM32_BSEC_OTP_OFFSET, buffer, *size);
+	if (ret >= 0) {
+		*size = ret;
+		ret = 0;
+	}
+
+	return 0;
+}
+
+static int dfu_pmic_read(u64 offset, u8 *buffer, long *size)
+{
+	int ret;
+#ifdef CONFIG_PMIC_STPMIC1
+	struct udevice *dev;
+
+	ret = uclass_get_device_by_driver(UCLASS_MISC,
+					  DM_GET_DRIVER(stpmic1_nvm),
+					  &dev);
+	if (ret)
+		return ret;
+
+	ret = misc_read(dev, 0xF8 + offset, buffer, *size);
+	if (ret >= 0) {
+		*size = ret;
+		ret = 0;
+	}
+	if (ret == -EACCES) {
+		*size = 0;
+		ret = 0;
+	}
+#else
+	pr_err("PMIC update not supported");
+	ret = -EOPNOTSUPP;
+#endif
+
+	return ret;
+}
+
+int dfu_read_medium_virt(struct dfu_entity *dfu, u64 offset,
+			 void *buf, long *len)
+{
+	switch (dfu->data.virt.dev_num) {
+	case 0x0:
+		return dfu_otp_read(offset, buf, len);
+	case 0x1:
+		return dfu_pmic_read(offset, buf, len);
+	}
+	*len = 0;
+	return 0;
+}
+
+int __weak dfu_get_medium_size_virt(struct dfu_entity *dfu, u64 *size)
+{
+	*size = SZ_1K;
+
+	return 0;
+}
+
+#endif
diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index bbeeb15d7e..2ab3b5cc9a 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -7,7 +7,6 @@
 #include <bootm.h>
 #include <clk.h>
 #include <config.h>
-#include <dfu.h>
 #include <dm.h>
 #include <env.h>
 #include <env_internal.h>
@@ -18,9 +17,7 @@
 #include <init.h>
 #include <led.h>
 #include <malloc.h>
-#include <memalign.h>
 #include <misc.h>
-#include <mtd.h>
 #include <mtd_node.h>
 #include <netdev.h>
 #include <phy.h>
@@ -843,148 +840,6 @@ int ft_board_setup(void *blob, bd_t *bd)
 }
 #endif
 
-#ifdef CONFIG_SET_DFU_ALT_INFO
-#define DFU_ALT_BUF_LEN SZ_1K
-
-static void board_get_alt_info(const char *dev, char *buff)
-{
-	char var_name[32] = "dfu_alt_info_";
-	int ret;
-
-	ALLOC_CACHE_ALIGN_BUFFER(char, tmp_alt, DFU_ALT_BUF_LEN);
-
-	/* name of env variable to read = dfu_alt_info_<dev> */
-	strcat(var_name, dev);
-	ret = env_get_f(var_name, tmp_alt, DFU_ALT_BUF_LEN);
-	if (ret) {
-		if (buff[0] != '\0')
-			strcat(buff, "&");
-		strncat(buff, tmp_alt, DFU_ALT_BUF_LEN);
-	}
-}
-
-void set_dfu_alt_info(char *interface, char *devstr)
-{
-	struct udevice *dev;
-	struct mtd_info *mtd;
-
-	ALLOC_CACHE_ALIGN_BUFFER(char, buf, DFU_ALT_BUF_LEN);
-
-	if (env_get("dfu_alt_info"))
-		return;
-
-	memset(buf, 0, sizeof(buf));
-
-	/* probe all MTD devices */
-	mtd_probe_devices();
-
-	board_get_alt_info("ram", buf);
-
-	if (!uclass_get_device(UCLASS_MMC, 0, &dev))
-		board_get_alt_info("mmc0", buf);
-
-	if (!uclass_get_device(UCLASS_MMC, 1, &dev))
-		board_get_alt_info("mmc1", buf);
-
-	if (!uclass_get_device(UCLASS_SPI_FLASH, 0, &dev))
-		board_get_alt_info("nor0", buf);
-
-	mtd = get_mtd_device_nm("nand0");
-	if (!IS_ERR_OR_NULL(mtd))
-		board_get_alt_info("nand0", buf);
-
-	mtd = get_mtd_device_nm("spi-nand0");
-	if (!IS_ERR_OR_NULL(mtd))
-		board_get_alt_info("spi-nand0", buf);
-
-#ifdef CONFIG_DFU_VIRT
-	strncat(buf, "&virt 0=OTP", DFU_ALT_BUF_LEN);
-
-	if (IS_ENABLED(CONFIG_PMIC_STPMIC1))
-		strncat(buf, "&virt 1=PMIC", DFU_ALT_BUF_LEN);
-#endif
-
-	env_set("dfu_alt_info", buf);
-	puts("DFU alt info setting: done\n");
-}
-
-#if CONFIG_IS_ENABLED(DFU_VIRT)
-#include <dfu.h>
-#include <power/stpmic1.h>
-
-static int dfu_otp_read(u64 offset, u8 *buffer, long *size)
-{
-	struct udevice *dev;
-	int ret;
-
-	ret = uclass_get_device_by_driver(UCLASS_MISC,
-					  DM_GET_DRIVER(stm32mp_bsec),
-					  &dev);
-	if (ret)
-		return ret;
-
-	ret = misc_read(dev, offset + STM32_BSEC_OTP_OFFSET, buffer, *size);
-	if (ret >= 0) {
-		*size = ret;
-		ret = 0;
-	}
-
-	return 0;
-}
-
-static int dfu_pmic_read(u64 offset, u8 *buffer, long *size)
-{
-	int ret;
-#ifdef CONFIG_PMIC_STPMIC1
-	struct udevice *dev;
-
-	ret = uclass_get_device_by_driver(UCLASS_MISC,
-					  DM_GET_DRIVER(stpmic1_nvm),
-					  &dev);
-	if (ret)
-		return ret;
-
-	ret = misc_read(dev, 0xF8 + offset, buffer, *size);
-	if (ret >= 0) {
-		*size = ret;
-		ret = 0;
-	}
-	if (ret == -EACCES) {
-		*size = 0;
-		ret = 0;
-	}
-#else
-	pr_err("PMIC update not supported");
-	ret = -EOPNOTSUPP;
-#endif
-
-	return ret;
-}
-
-int dfu_read_medium_virt(struct dfu_entity *dfu, u64 offset,
-			 void *buf, long *len)
-{
-	switch (dfu->data.virt.dev_num) {
-	case 0x0:
-		return dfu_otp_read(offset, buf, len);
-	case 0x1:
-		return dfu_pmic_read(offset, buf, len);
-	}
-	*len = 0;
-	return 0;
-}
-
-int __weak dfu_get_medium_size_virt(struct dfu_entity *dfu, u64 *size)
-{
-	*size = SZ_1K;
-
-	return 0;
-}
-
-#endif
-
-#endif
-
 static void board_copro_image_process(ulong fw_image, size_t fw_size)
 {
 	int ret, id = 0; /* Copro id fixed to 0 as only one coproc on mp1 */
