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boards: st: b_u585i disco kit variant "ext_flash_app" for XIP
Create a new variant to execute in place on the external octoSPI flash NOR of the b_u585i_iot02a disco kit Signed-off-by: Francois Ramu <[email protected]>
1 parent 20efb9e commit f80eefa

7 files changed

+147
-13
lines changed

‎boards/st/b_u585i_iot02a/b_u585i_iot02a-common.dtsi

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@@ -147,15 +147,7 @@ stm32_lp_tick_source: &lptim1 {
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four-byte-opcodes;
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status = "okay";
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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partition@0 {
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reg = <0x00000000 DT_SIZE_M(64)>;
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};
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};
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/* Partition of the external NOR is defined in each variant. */
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};
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};
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‎boards/st/b_u585i_iot02a/b_u585i_iot02a.dts

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@@ -100,3 +100,15 @@
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st,adc-prescaler = <4>;
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status = "okay";
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};
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&mx25lm51245 {
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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partition@0 {
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reg = <0x00000000 DT_SIZE_M(64)>;
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};
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};
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};

‎boards/st/b_u585i_iot02a/b_u585i_iot02a_stm32u585xx_ext_flash_app.dts

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/*
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* Copyright (c) 2025 STMicroelectronics
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/dts-v1/;
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#include "b_u585i_iot02a-common.dtsi"
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#include <zephyr/dt-bindings/memory-attr/memory-attr.h>
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#include <zephyr/dt-bindings/memory-attr/memory-attr-arm.h>
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/ {
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model = "STMicroelectronics B-U585I-IOT02A discovery kit";
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compatible = "st,b-u585i-iot02a";
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chosen {
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zephyr,console = &usart1;
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zephyr,shell-uart = &usart1;
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zephyr,sram = &sram0;
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zephyr,flash = &flash0;
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zephyr,code-partition = &slot0_partition;
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zephyr,bt-hci = &bt_hci_uart;
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};
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aliases {
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led0 = &green_led_1;
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led1 = &red_led_1;
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sw0 = &user_button;
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die-temp0 = &die_temp;
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};
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octo_nor: memory@70000000 {
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compatible = "zephyr,memory-region";
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reg = <0x70000000 DT_SIZE_M(64)>;
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zephyr,memory-region = "EXTMEM";
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/* The ATTR_MPU_EXTMEM attribut causing a MPU FAULT */
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zephyr,memory-attr = <( DT_MEM_ARM(ATTR_MPU_IO) )>;
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};
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};
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&flash0 {
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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/*
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* Following flash partition is dedicated to the use of b_u585i_iot02a
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* with TZEN=0 (so w/o TFM).
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* Set the partitions with first MB to make use of the whole Bank1
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*/
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boot_partition: partition@0 {
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label = "mcuboot";
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reg = <0x00000000 DT_SIZE_K(64)>;
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};
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storage_partition: partition@f0000 {
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label = "storage";
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reg = <0x000f0000 DT_SIZE_K(64)>;
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};
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};
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};
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&gpdma1 {
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status = "okay";
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};
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&uart4 {
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pinctrl-0 = <&uart4_tx_pc10 &uart4_rx_pc11>;
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pinctrl-names = "default";
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current-speed = <100000>;
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status = "okay";
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bt_hci_uart: bt_hci_uart {
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compatible = "zephyr,bt-hci-uart";
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status = "okay";
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};
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};
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&die_temp {
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status = "okay";
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};
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&adc1 {
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st,adc-prescaler = <4>;
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status = "okay";
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};
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&mx25lm51245 {
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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slot0_partition: partition@0 {
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label = "image-0";
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reg = <0x00000000 DT_SIZE_K(416)>;
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};
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slot1_partition: partition@68000 {
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label = "image-1";
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reg = <0x00068000 DT_SIZE_K(416)>;
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};
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scratch_partition: partition@d0000 {
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label = "image-scratch";
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reg = <0x000d0000 DT_SIZE_K(192)>;
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};
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};
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};

‎boards/st/b_u585i_iot02a/b_u585i_iot02a_stm32u585xx_ext_flash_app.yaml

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identifier: b_u585i_iot02a/stm32u585xx/xip
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name: ST B_U585I_IOT02A Discovery kit xip target
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type: mcu
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arch: arm
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toolchain:
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- zephyr
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- gnuarmemb
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ram: 786
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flash: 512
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vendor: st

‎boards/st/b_u585i_iot02a/b_u585i_iot02a_stm32u585xx_ext_flash_app_defconfig

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# SPDX-License-Identifier: Apache-2.0
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# enable uart driver
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CONFIG_SERIAL=y
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# enable GPIO
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CONFIG_GPIO=y
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# console
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CONFIG_CONSOLE=y
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CONFIG_UART_CONSOLE=y

‎boards/st/b_u585i_iot02a/board.cmake

Lines changed: 2 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -13,11 +13,9 @@ if(CONFIG_BUILD_WITH_TFM)
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endif()
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# keep first
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if(CONFIG_STM32_MEMMAP)
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board_runner_args(stm32cubeprogrammer "--port=swd" "--reset-mode=hw")
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board_runner_args(stm32cubeprogrammer "--extload=MX25LM51245G_STM32U585I-IOT02A.stldr")
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else()
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board_runner_args(stm32cubeprogrammer "--erase" "--port=swd" "--reset-mode=hw")
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if(CONFIG_STM32_MEMMAP OR (CONFIG_XIP AND CONFIG_BOOTLOADER_MCUBOOT))
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board_runner_args(stm32cubeprogrammer "--extload=MX25LM51245G_STM32U585I-IOT02A.stldr")
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endif()
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board_runner_args(openocd "--tcl-port=6666")

‎boards/st/b_u585i_iot02a/board.yml

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@@ -6,3 +6,4 @@ board:
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- name: stm32u585xx
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variants:
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- name: ns
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- name: ext_flash_app

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