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stm32u5 run application in external flash memory XIP #93032

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863c64b
soc: st: stm32 devices define flash base address of OSPI instance
FRASTM Jul 11, 2025
c34d8ba
boards: arm: stm32u585 disco kit move partition to ext flash
FRASTM May 7, 2025
8c58be3
samples: sysbuild: with mcu_boot on the stm32u585 target
FRASTM May 7, 2025
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15 changes: 13 additions & 2 deletions boards/st/b_u585i_iot02a/b_u585i_iot02a-common.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -152,8 +152,19 @@ stm32_lp_tick_source: &lptim1 {
#address-cells = <1>;
#size-cells = <1>;

partition@0 {
reg = <0x00000000 DT_SIZE_M(64)>;
slot0_partition: partition@0 {
label = "image-0";
reg = <0x00000000 DT_SIZE_K(256)>;
};

slot1_partition: partition@40000 {
label = "image-1";
reg = <0x00040000 DT_SIZE_K(256)>;
};

scratch_partition: partition@e0000 {
label = "image-scratch";
reg = <0x000e0000 DT_SIZE_K(64)>;
};
};
};
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15 changes: 0 additions & 15 deletions boards/st/b_u585i_iot02a/b_u585i_iot02a.dts
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Expand Up @@ -54,21 +54,6 @@
reg = <0x00000000 DT_SIZE_K(64)>;
};

slot0_partition: partition@10000 {
label = "image-0";
reg = <0x00010000 DT_SIZE_K(416)>;
};

slot1_partition: partition@78000 {
label = "image-1";
reg = <0x00078000 DT_SIZE_K(416)>;
};

scratch_partition: partition@e0000 {
label = "image-scratch";
reg = <0x000e0000 DT_SIZE_K(64)>;
};

storage_partition: partition@f0000 {
label = "storage";
reg = <0x000f0000 DT_SIZE_K(64)>;
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1 change: 0 additions & 1 deletion boards/st/b_u585i_iot02a/b_u585i_iot02a.yaml
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Expand Up @@ -12,7 +12,6 @@ supported:
- arduino_spi
- hts221
- dma
- usb_device
- spi
- dac
- adc
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6 changes: 2 additions & 4 deletions boards/st/b_u585i_iot02a/board.cmake
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Expand Up @@ -13,11 +13,9 @@ if(CONFIG_BUILD_WITH_TFM)
endif()

# keep first
if(CONFIG_STM32_MEMMAP)
board_runner_args(stm32cubeprogrammer "--port=swd" "--reset-mode=hw")
board_runner_args(stm32cubeprogrammer "--extload=MX25LM51245G_STM32U585I-IOT02A.stldr")
else()
board_runner_args(stm32cubeprogrammer "--erase" "--port=swd" "--reset-mode=hw")
if(CONFIG_STM32_MEMMAP OR (CONFIG_XIP AND CONFIG_BOOTLOADER_MCUBOOT))
board_runner_args(stm32cubeprogrammer "--extload=MX25LM51245G_STM32U585I-IOT02A.stldr")
endif()

board_runner_args(openocd "--tcl-port=6666")
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17 changes: 17 additions & 0 deletions samples/sysbuild/with_mcuboot/boards/b_u585i_iot02a.overlay
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@@ -0,0 +1,17 @@
/*
* Copyright (c) 2025 STMicroelectronics
*
* SPDX-License-Identifier: Apache-2.0
*/

/*
* Define the device, controller and partition to be the external memory
* for running the application in external NOR from MCUboot
*/

/ {
chosen {
zephyr,flash = &mx25lm51245;
zephyr,flash-controller = &mx25lm51245;
};
};
1 change: 1 addition & 0 deletions samples/sysbuild/with_mcuboot/sample.yaml
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Expand Up @@ -17,6 +17,7 @@ tests:
- nucleo_h7s3l8
- nucleo_u385rg_q
- stm32h7s78_dk
- b_u585i_iot02a
integration_platforms:
- nrf52840dk/nrf52840
- esp32_devkitc/esp32/procpu
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4 changes: 3 additions & 1 deletion soc/st/stm32/Kconfig.defconfig
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Expand Up @@ -28,10 +28,12 @@ DT_STM32_LPTIM_PATH := $(dt_nodelabel_path,stm32_lp_tick_source)

DT_CHOSEN_Z_FLASH := zephyr,flash
DT_COMPAT_XSPI := st,stm32-xspi
DT_COMPAT_OSPI := st,stm32-ospi

DT_CHOSEN_FLASH_NODE := $(dt_chosen_path,$(DT_CHOSEN_Z_FLASH))
DT_CHOSEN_FLASH_PARENT := $(dt_node_parent,$(DT_CHOSEN_FLASH_NODE))
DT_FLASH_PARENT_IS_XSPI := $(dt_node_has_compat,$(DT_CHOSEN_FLASH_PARENT),$(DT_COMPAT_XSPI))
DT_FLASH_PARENT_IS_OSPI := $(dt_node_has_compat,$(DT_CHOSEN_FLASH_PARENT),$(DT_COMPAT_OSPI))

config SYS_CLOCK_HW_CYCLES_PER_SEC
default "$(DT_STM32_RCC_CLOCK_FREQ)" if "$(dt_nodelabel_enabled,rcc)"
Expand Down Expand Up @@ -82,7 +84,7 @@ config BUILD_WITH_TFM

config FLASH_BASE_ADDRESS
default $(dt_node_reg_addr_hex,$(DT_CHOSEN_FLASH_PARENT),1) \
if $(DT_FLASH_PARENT_IS_XSPI)
if $(DT_FLASH_PARENT_IS_XSPI) || $(DT_FLASH_PARENT_IS_OSPI)
default $(dt_chosen_reg_addr_hex,$(DT_CHOSEN_Z_FLASH))

# The XSPI PSRAM driver creates a SMH region with attribute SMH_REG_ATTR_EXTERNAL (2)
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