Merge tag 'u-boot-stm32-20260526' of https://source.denx.de/u-boot/custodians/u-boot-stmHEADmaster

CI: https://source.denx.de/u-boot/custodians/u-boot-stm/-/pipelines/30256

- Add support dynamic A/B bank bootup for STM32MP15
- Increase SYS_MALLOC_F_LEN for stm32mp15_defconfig to fix boot with optee-4.10.0
- Enable Arm SMC watchdog for STM32MP1
- Update part number for TM32MP251/3 SoC's family

9 files changed, 91 insertions, 84 deletions

diff --git a/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi b/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi
index 79494ecad90..600316205fc 100644
--- a/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15-scmi-u-boot.dtsi
@@ -21,6 +21,13 @@
 		pinctrl1 = &pinctrl_z;
 	};
 
+	arm_wdt: watchdog {
+		compatible = "arm,smc-wdt";
+		arm,smc-id = <0xbc000000>;
+		timeout-sec = <32>;
+		status = "okay";
+	};
+
 	binman: binman {
 		multiple-images;
 	};
@@ -103,7 +110,7 @@
 };
 
 &iwdg2 {
-	bootph-all;
+	status = "disabled";
 };
 
 /* pre-reloc probe = reserve video frame buffer in video_reserve() */
diff --git a/arch/arm/mach-stm32mp/include/mach/sys_proto.h b/arch/arm/mach-stm32mp/include/mach/sys_proto.h
index a875907ac3e..05ce869c428 100644
--- a/arch/arm/mach-stm32mp/include/mach/sys_proto.h
+++ b/arch/arm/mach-stm32mp/include/mach/sys_proto.h
@@ -61,20 +61,20 @@
 /* ID for STM32MP25x = Device Part Number (RPN) (bit31:0) */
 #define CPU_STM32MP257Cxx	0x00002000
 #define CPU_STM32MP255Cxx	0x00082000
-#define CPU_STM32MP253Cxx	0x000B2004
-#define CPU_STM32MP251Cxx	0x000B3065
+#define CPU_STM32MP253Cxx	0x000B300C
+#define CPU_STM32MP251Cxx	0x000B306D
 #define CPU_STM32MP257Axx	0x40002E00
 #define CPU_STM32MP255Axx	0x40082E00
-#define CPU_STM32MP253Axx	0x400B2E04
-#define CPU_STM32MP251Axx	0x400B3E65
+#define CPU_STM32MP253Axx	0x400B3E0C
+#define CPU_STM32MP251Axx	0x400B3E6D
 #define CPU_STM32MP257Fxx	0x80002000
 #define CPU_STM32MP255Fxx	0x80082000
-#define CPU_STM32MP253Fxx	0x800B2004
-#define CPU_STM32MP251Fxx	0x800B3065
+#define CPU_STM32MP253Fxx	0x800B300C
+#define CPU_STM32MP251Fxx	0x800B306D
 #define CPU_STM32MP257Dxx	0xC0002E00
 #define CPU_STM32MP255Dxx	0xC0082E00
-#define CPU_STM32MP253Dxx	0xC00B2E04
-#define CPU_STM32MP251Dxx	0xC00B3E65
+#define CPU_STM32MP253Dxx	0xC00B3E0C
+#define CPU_STM32MP251Dxx	0xC00B3E6D
 
 /* return CPU_STMP32MP...Xxx constants */
 u32 get_cpu_type(void);
diff --git a/board/st/common/Makefile b/board/st/common/Makefile
index 122b13c3aa8..36dfaddfa0e 100644
--- a/board/st/common/Makefile
+++ b/board/st/common/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_PMIC_STPMIC1) += stpmic1.o
 ifeq ($(CONFIG_ARCH_STM32MP),y)
 obj-$(CONFIG_SET_DFU_ALT_INFO) += stm32mp_dfu.o
 obj-$(CONFIG_$(PHASE_)DFU_VIRT) += stm32mp_dfu_virt.o
+obj-$(CONFIG_FWU_MULTI_BANK_UPDATE) += stm32mp_fwu.o
 endif
 
 obj-$(CONFIG_TYPEC_STUSB160X) += stusb160x.o
diff --git a/board/st/common/stm32mp_fwu.c b/board/st/common/stm32mp_fwu.c
new file mode 100644
index 00000000000..ac7ca6bdca2
--- /dev/null
+++ b/board/st/common/stm32mp_fwu.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2026 Amarula Solutions, Dario Binacchi <[email protected]>
+ */
+
+#include <fwu.h>
+#include <part_efi.h>
+#include <asm/io.h>
+/**
+ * fwu_plat_get_bootidx() - Get the value of the boot index
+ * @boot_idx: Boot index value
+ *
+ * Get the value of the bank(partition) from which the platform
+ * has booted. This value is passed to U-Boot from the earlier
+ * stage bootloader which loads and boots all the relevant
+ * firmware images
+ *
+ */
+void fwu_plat_get_bootidx(uint *boot_idx)
+{
+	*boot_idx = (readl(TAMP_FWU_BOOT_INFO_REG) >>
+		    TAMP_FWU_BOOT_IDX_OFFSET) & TAMP_FWU_BOOT_IDX_MASK;
+}
+
+int fwu_platform_hook(struct udevice *dev, struct fwu_data *data)
+{
+	uint boot_idx;
+	efi_guid_t boot_uuid, root_uuid;
+	const efi_guid_t boot_type_guid = PARTITION_XBOOTLDR;
+	const efi_guid_t root_type_guid =
+		PARTITION_LINUX_FILE_SYSTEM_DATA_GUID;
+	char uuidbuf[UUID_STR_LEN + 1];
+	int retb, retr;
+
+	fwu_plat_get_bootidx(&boot_idx);
+
+	retb = fwu_mdata_get_image_guid(&boot_uuid, &boot_type_guid, boot_idx);
+	retr = fwu_mdata_get_image_guid(&root_uuid, &root_type_guid, boot_idx);
+
+	if (!retb && !retr) {
+		uuid_bin_to_str(boot_uuid.b, uuidbuf, UUID_STR_FORMAT_GUID);
+		env_set("boot_partuuid", uuidbuf);
+
+		uuid_bin_to_str(root_uuid.b, uuidbuf, UUID_STR_FORMAT_GUID);
+		env_set("root_partuuid", uuidbuf);
+	} else if (!retb && retr) {
+		log_warning("%s: found boot GUID but missing root GUID (%d)\n",
+			    __func__, retr);
+	} else if (!retr && retb) {
+		log_warning("%s: found root GUID but missing boot GUID (%d)\n",
+			    __func__, retb);
+	}
+
+	return 0;
+}
diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index 88ede4e3910..9b933a2ba0b 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -837,24 +837,3 @@ static void board_copro_image_process(ulong fw_image, size_t fw_size)
 }
 
 U_BOOT_FIT_LOADABLE_HANDLER(IH_TYPE_COPRO, board_copro_image_process);
-
-#if defined(CONFIG_FWU_MULTI_BANK_UPDATE)
-
-#include <fwu.h>
-
-/**
- * fwu_plat_get_bootidx() - Get the value of the boot index
- * @boot_idx: Boot index value
- *
- * Get the value of the bank(partition) from which the platform
- * has booted. This value is passed to U-Boot from the earlier
- * stage bootloader which loads and boots all the relevant
- * firmware images
- *
- */
-void fwu_plat_get_bootidx(uint *boot_idx)
-{
-	*boot_idx = (readl(TAMP_FWU_BOOT_INFO_REG) >>
-		    TAMP_FWU_BOOT_IDX_OFFSET) & TAMP_FWU_BOOT_IDX_MASK;
-}
-#endif /* CONFIG_FWU_MULTI_BANK_UPDATE */
diff --git a/board/st/stm32mp2/stm32mp2.c b/board/st/stm32mp2/stm32mp2.c
index 5cbbbc322a3..7bc7d2a608f 100644
--- a/board/st/stm32mp2/stm32mp2.c
+++ b/board/st/stm32mp2/stm32mp2.c
@@ -188,56 +188,3 @@ void board_quiesce_devices(void)
 {
 	led_boot_off();
 }
-
-#if defined(CONFIG_FWU_MULTI_BANK_UPDATE)
-
-#include <fwu.h>
-
-/**
- * fwu_plat_get_bootidx() - Get the value of the boot index
- * @boot_idx: Boot index value
- *
- * Get the value of the bank(partition) from which the platform
- * has booted. This value is passed to U-Boot from the earlier
- * stage bootloader which loads and boots all the relevant
- * firmware images
- *
- */
-void fwu_plat_get_bootidx(uint *boot_idx)
-{
-	*boot_idx = (readl(TAMP_FWU_BOOT_INFO_REG) >>
-		    TAMP_FWU_BOOT_IDX_OFFSET) & TAMP_FWU_BOOT_IDX_MASK;
-}
-
-int fwu_platform_hook(struct udevice *dev, struct fwu_data *data)
-{
-	uint boot_idx;
-	efi_guid_t boot_uuid, root_uuid;
-	const efi_guid_t boot_type_guid = PARTITION_XBOOTLDR;
-	const efi_guid_t root_type_guid =
-		PARTITION_LINUX_FILE_SYSTEM_DATA_GUID;
-	char uuidbuf[UUID_STR_LEN + 1];
-	int retb, retr;
-
-	fwu_plat_get_bootidx(&boot_idx);
-
-	retb = fwu_mdata_get_image_guid(&boot_uuid, &boot_type_guid, boot_idx);
-	retr = fwu_mdata_get_image_guid(&root_uuid, &root_type_guid, boot_idx);
-
-	if (!retb && !retr) {
-		uuid_bin_to_str(boot_uuid.b, uuidbuf, UUID_STR_FORMAT_GUID);
-		env_set("boot_partuuid", uuidbuf);
-
-		uuid_bin_to_str(root_uuid.b, uuidbuf, UUID_STR_FORMAT_GUID);
-		env_set("root_partuuid", uuidbuf);
-	} else if (!retb && retr) {
-		log_warning("%s: found boot GUID but missing root GUID (%d)\n",
-			    __func__, retr);
-	} else if (!retr && retb) {
-		log_warning("%s: found root GUID but missing boot GUID (%d)\n",
-			    __func__, retb);
-	}
-
-	return 0;
-}
-#endif /* CONFIG_FWU_MULTI_BANK_UPDATE */
diff --git a/configs/stm32mp13_defconfig b/configs/stm32mp13_defconfig
index 620a6da2efe..2ad57e23e44 100644
--- a/configs/stm32mp13_defconfig
+++ b/configs/stm32mp13_defconfig
@@ -113,4 +113,6 @@ CONFIG_USB_GADGET_MANUFACTURER="STMicroelectronics"
 CONFIG_USB_GADGET_VENDOR_NUM=0x0483
 CONFIG_USB_GADGET_PRODUCT_NUM=0x5720
 CONFIG_USB_GADGET_DWC2_OTG=y
+CONFIG_WDT=y
+CONFIG_WDT_ARM_SMC=y
 CONFIG_ERRNO_STR=y
diff --git a/configs/stm32mp15_defconfig b/configs/stm32mp15_defconfig
index b9e44254087..53903376524 100644
--- a/configs/stm32mp15_defconfig
+++ b/configs/stm32mp15_defconfig
@@ -1,7 +1,7 @@
 CONFIG_ARM=y
 CONFIG_ARCH_STM32MP=y
 CONFIG_TFABOOT=y
-CONFIG_SYS_MALLOC_F_LEN=0x80000
+CONFIG_SYS_MALLOC_F_LEN=0x90000
 CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0xc0100000
 CONFIG_ENV_OFFSET=0x900000
 CONFIG_ENV_SECT_SIZE=0x40000
@@ -169,5 +169,6 @@ CONFIG_BMP_24BPP=y
 CONFIG_BMP_32BPP=y
 CONFIG_WDT=y
 CONFIG_WDT_STM32MP=y
+CONFIG_WDT_ARM_SMC=y
 # CONFIG_BINMAN_FDT is not set
 CONFIG_ERRNO_STR=y
diff --git a/include/configs/stm32mp15_st_common.h b/include/configs/stm32mp15_st_common.h
index 60838cb0e3f..7727e583fc7 100644
--- a/include/configs/stm32mp15_st_common.h
+++ b/include/configs/stm32mp15_st_common.h
@@ -8,7 +8,22 @@
 #ifndef __CONFIG_STM32MP15_ST_COMMON_H__
 #define __CONFIG_STM32MP15_ST_COMMON_H__
 
+#ifdef CONFIG_FWU_MULTI_BANK_UPDATE
+#define SCAN_DEV_FOR_BOOT_PARTS \
+	"setenv devplist; " \
+	"env exists boot_partuuid && " \
+		"part number ${devtype} ${devnum} ${boot_partuuid} devplist; " \
+	"env exists devplist || " \
+		"part list ${devtype} ${devnum} -bootable devplist; "
+
+#define ST_STM32MP15_FWU_ENV \
+	"altbootcmd=${bootcmd}\0"
+#else
+#define ST_STM32MP15_FWU_ENV
+#endif
+
 #define STM32MP_BOARD_EXTRA_ENV \
+	ST_STM32MP15_FWU_ENV \
 	"usb_pgood_delay=2000\0" \
 	"console=ttySTM0\0" \
 	"splashimage=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \