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boards: st: refine boards embedding a scratch partition #102759

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bcca4b9
boards: st: nucleo_f746zg: fix flash layout
etienne-lms Jan 22, 2026
cbb3285
boards: st: sensortile_box: fix storage partition in flash layout
etienne-lms Jan 22, 2026
f8f3904
boards: st: nucleo_f446re: fix storage partition
etienne-lms Jan 22, 2026
2e4821d
boards: st: nucleo_f446ze: fix storage partition
etienne-lms Jan 22, 2026
442a2ef
boards: st: nucleo_f207zg: fix slot0/slot1/scratch partitions layout
etienne-lms Jan 22, 2026
e60f57f
boards: st: nucleo_h743zi: remove storage partition
etienne-lms Dec 12, 2025
90cdace
boards: st: nucleo_f4*: add missing zephyr,code-partition
etienne-lms Dec 12, 2025
00b4b40
boards: st: fix sysbuild/MCUBoot config for boards using swap-with-sc…
etienne-lms Jan 22, 2026
9651888
boards: st: update flash layout for boards using MCUBoot swap-using-o…
etienne-lms Dec 12, 2025
4256ce4
boards: st: nucleo_f410rb: fix flash layout for update with MCUBoot
etienne-lms Dec 12, 2025
78bf71d
boards: st: stm32f0_disco: refine flash layout to add a storage parti…
etienne-lms Dec 12, 2025
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8 changes: 2 additions & 6 deletions boards/st/b_u585i_iot02a/b_u585i_iot02a.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -65,14 +65,10 @@
slot1_partition: partition@78000 {
compatible = "zephyr,mapped-partition";
label = "image-1";
reg = <0x00078000 DT_SIZE_K(416)>;
reg = <0x00078000 DT_SIZE_K(420)>;
};

scratch_partition: partition@e0000 {
compatible = "zephyr,mapped-partition";
label = "image-scratch";
reg = <0x000e0000 DT_SIZE_K(64)>;
};
/* Unused range [0xe1000..0xeffff] */

storage_partition: partition@f0000 {
compatible = "zephyr,mapped-partition";
Expand Down
6 changes: 6 additions & 0 deletions boards/st/nucleo_f207zg/Kconfig.sysbuild
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@@ -0,0 +1,6 @@
# SPDX-FileCopyrightText: Copyright STMicroelectronics
# SPDX-License-Identifier: Apache-2.0

choice MCUBOOT_MODE
default MCUBOOT_MODE_SWAP_SCRATCH if BOOTLOADER_MCUBOOT
endchoice
20 changes: 15 additions & 5 deletions boards/st/nucleo_f207zg/nucleo_f207zg.dts
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Expand Up @@ -233,6 +233,7 @@ zephyr_udc0: &usbotg_fs {
#size-cells = <1>;
ranges;

/* Sectors 0 and 1 (2x16kByte) */
boot_partition: partition@0 {
compatible = "zephyr,mapped-partition";
label = "mcuboot";
Expand All @@ -241,10 +242,14 @@ zephyr_udc0: &usbotg_fs {
};

/*
* Sectors 2 and 3 (2x16kByte)
*
* nvs subsystem requires 2 sectors with a max total of 32K
* On F2 series, the only option is to use the following
* partition, which is compatible with mcuboot usage.
* Keep it commented in order it is not used by CI.
* Keep it commented in order it is not used by CI
* since, when MCUBoot is not embedded, Zephyr image starts
* from flash0 beginning and overlaps storage_partition.
*
* storage_partition: partition@8000 {
* compatible = "zephyr,mapped-partition";
Expand All @@ -253,22 +258,27 @@ zephyr_udc0: &usbotg_fs {
* };
*/

/* Sector 4 (64kByte): spare/unused */

/* Sectors 5 to 7 (3x128kByte) */
slot0_partition: partition@20000 {
compatible = "zephyr,mapped-partition";
label = "image-0";
reg = <0x20000 DT_SIZE_K(384)>;
};

slot1_partition: partition@60000 {
/* Sectors 8 to 10 (3x128kByte) */
slot1_partition: partition@80000 {
compatible = "zephyr,mapped-partition";
label = "image-1";
reg = <0x60000 DT_SIZE_K(384)>;
reg = <0x80000 DT_SIZE_K(384)>;
};

scratch_partition: partiimagtion@c0000 {
/* Sector 11 (128kByte) */
scratch_partition: partition@e0000 {
compatible = "zephyr,mapped-partition";
label = "image-scratch";
reg = <0xc0000 DT_SIZE_K(128)>;
reg = <0xe0000 DT_SIZE_K(128)>;
};
};
};
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6 changes: 6 additions & 0 deletions boards/st/nucleo_f401re/Kconfig.sysbuild
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@@ -0,0 +1,6 @@
# SPDX-FileCopyrightText: Copyright STMicroelectronics
# SPDX-License-Identifier: Apache-2.0

choice MCUBOOT_MODE
default MCUBOOT_MODE_SWAP_SCRATCH if BOOTLOADER_MCUBOOT
endchoice
6 changes: 6 additions & 0 deletions boards/st/nucleo_f410rb/Kconfig.sysbuild
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# SPDX-FileCopyrightText: Copyright STMicroelectronics
# SPDX-License-Identifier: Apache-2.0

choice MCUBOOT_MODE
default MCUBOOT_MODE_OVERWRITE_ONLY if BOOTLOADER_MCUBOOT
endchoice
18 changes: 4 additions & 14 deletions boards/st/nucleo_f410rb/nucleo_f410rb.dts
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Expand Up @@ -20,6 +20,7 @@
zephyr,shell-uart = &usart2;
zephyr,sram = &sram0;
zephyr,flash = &flash0;
zephyr,code-partition = &slot0_partition;
};

leds: leds {
Expand Down Expand Up @@ -131,37 +132,26 @@
#size-cells = <1>;
ranges;

/* Sectors 0 & 1 (2x16kB) */
boot_partition: partition@0 {
compatible = "zephyr,mapped-partition";
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(32)>;
read-only;
};

/*
* The flash sectors 2&3 at 0x00008000 and ending at
* 0x0000ffff
*/
/* Sectors 2 & 3 (2x16kB) */
slot0_partition: partition@8000 {
compatible = "zephyr,mapped-partition";
label = "image-0";
reg = <0x00008000 DT_SIZE_K(32)>;
};

/*
* The flash sectors 4 at 0x00010000 and ending at
* 0x001ffff
*/
/* Sectors 4 (only the first 32kB) */
slot1_partition: partition@10000 {
compatible = "zephyr,mapped-partition";
label = "image-1";
reg = <0x00010000 DT_SIZE_K(32)>;
};

scratch_partition: partition@18000 {
compatible = "zephyr,mapped-partition";
label = "image-scratch";
reg = <0x00018000 DT_SIZE_K(32)>;
};
};
};
6 changes: 6 additions & 0 deletions boards/st/nucleo_f413zh/Kconfig.sysbuild
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# SPDX-FileCopyrightText: Copyright STMicroelectronics
# SPDX-License-Identifier: Apache-2.0

choice MCUBOOT_MODE
default MCUBOOT_MODE_SWAP_SCRATCH if BOOTLOADER_MCUBOOT
endchoice
6 changes: 6 additions & 0 deletions boards/st/nucleo_f429zi/Kconfig.sysbuild
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# SPDX-FileCopyrightText: Copyright STMicroelectronics
# SPDX-License-Identifier: Apache-2.0

choice MCUBOOT_MODE
default MCUBOOT_MODE_SWAP_SCRATCH if BOOTLOADER_MCUBOOT
endchoice
6 changes: 6 additions & 0 deletions boards/st/nucleo_f446re/Kconfig.sysbuild
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# SPDX-FileCopyrightText: Copyright STMicroelectronics
# SPDX-License-Identifier: Apache-2.0

choice MCUBOOT_MODE
default MCUBOOT_MODE_SWAP_SCRATCH if BOOTLOADER_MCUBOOT
endchoice
19 changes: 11 additions & 8 deletions boards/st/nucleo_f446re/nucleo_f446re.dts
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@@ -1,3 +1,3 @@
/*
* Copyright (c) 2018 Philémon Jaermann
*
Expand All @@ -21,6 +21,7 @@
zephyr,sram = &sram0;
zephyr,flash = &flash0;
zephyr,canbus = &can2;
zephyr,code-partition = &slot0_partition;
};

leds: leds {
Expand Down Expand Up @@ -101,8 +102,8 @@
&i2c1 {
pinctrl-0 = <&i2c1_scl_pb8 &i2c1_sda_pb9>;
pinctrl-names = "default";
scl-gpios = <&gpiob 8 GPIO_ACTIVE_HIGH>;

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boards/st/nucleo_f446re/nucleo_f446re.dts:105 Property is redefined in same closure. Delete property
See https://docs.zephyrproject.org/latest/contribute/style/devicetree.html for more details.
sda-gpios = <&gpiob 9 GPIO_ACTIVE_HIGH>;

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boards/st/nucleo_f446re/nucleo_f446re.dts:106 Property is redefined in same closure. Delete property
See https://docs.zephyrproject.org/latest/contribute/style/devicetree.html for more details.
status = "okay";
clock-frequency = <I2C_BITRATE_FAST>;
scl-gpios = <&gpiob 8 GPIO_ACTIVE_HIGH>;
Expand Down Expand Up @@ -173,36 +174,38 @@
#size-cells = <1>;
ranges;

/* Sectors 0 and 1 (2x16kByte) */
boot_partition: partition@0 {
compatible = "zephyr,mapped-partition";
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(64)>;
reg = <0x00000000 DT_SIZE_K(32)>;

@JarmouniA JarmouniA Jul 4, 2026

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I guess you will need to verify if MCUboot with its default config fits in 32KB, otherwise will need to add a SoC-specific MCUboot conf with certain non-essential things disabled.

read-only;
};

/*
* The flash starting at 0x00010000 and ending at
* 0x0001ffff (sectors 16-31) is reserved for use
* by the application.
*/
storage_partition: partition@10000 {
/* Sectors 2 and 3 (2x16kByte) */
storage_partition: partition@8000 {
compatible = "zephyr,mapped-partition";
label = "storage";
reg = <0x00010000 DT_SIZE_K(64)>;
reg = <0x00008000 DT_SIZE_K(32)>;
};

/* Sector 4 (64kByte): spare/unused */

/* Sector 5 (128kByte) */
slot0_partition: partition@20000 {
compatible = "zephyr,mapped-partition";
label = "image-0";
reg = <0x00020000 DT_SIZE_K(128)>;
};

/* Sector 6 (128kByte) */
slot1_partition: partition@40000 {
compatible = "zephyr,mapped-partition";
label = "image-1";
reg = <0x00040000 DT_SIZE_K(128)>;
};

/* Sector 7 (128kByte) */
scratch_partition: partition@60000 {
compatible = "zephyr,mapped-partition";
label = "image-scratch";
Expand Down
6 changes: 6 additions & 0 deletions boards/st/nucleo_f446ze/Kconfig.sysbuild
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# SPDX-FileCopyrightText: Copyright STMicroelectronics
# SPDX-License-Identifier: Apache-2.0

choice MCUBOOT_MODE
default MCUBOOT_MODE_SWAP_SCRATCH if BOOTLOADER_MCUBOOT
endchoice
19 changes: 11 additions & 8 deletions boards/st/nucleo_f446ze/nucleo_f446ze.dts
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Expand Up @@ -20,6 +20,7 @@
zephyr,sram = &sram0;
zephyr,flash = &flash0;
zephyr,canbus = &can1;
zephyr,code-partition = &slot0_partition;
};

leds: leds {
Expand Down Expand Up @@ -194,36 +195,38 @@ zephyr_udc0: &usbotg_fs {
#size-cells = <1>;
ranges;

/* Sectors 0 and 1 (2x16kByte) */
boot_partition: partition@0 {
compatible = "zephyr,mapped-partition";
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(64)>;
reg = <0x00000000 DT_SIZE_K(32)>;
read-only;
};

/*
* The flash starting at 0x00010000 and ending at
* 0x0001ffff (sectors 16-31) is reserved for use
* by the application.
*/
storage_partition: partition@10000 {
/* Sectors 2 and 3 (2x16kByte) */
storage_partition: partition@8000 {
compatible = "zephyr,mapped-partition";
label = "storage";
reg = <0x00010000 DT_SIZE_K(64)>;
reg = <0x00008000 DT_SIZE_K(32)>;
};

/* Sector 4 (64kByte): spare/unused */

/* Sector 5 (128kByte) */
slot0_partition: partition@20000 {
compatible = "zephyr,mapped-partition";
label = "image-0";
reg = <0x00020000 DT_SIZE_K(128)>;
};

/* Sector 6 (128kByte) */
slot1_partition: partition@40000 {
compatible = "zephyr,mapped-partition";
label = "image-1";
reg = <0x00040000 DT_SIZE_K(128)>;
};

/* Sector 7 (128kByte) */
scratch_partition: partition@60000 {
compatible = "zephyr,mapped-partition";
label = "image-scratch";
Expand Down
24 changes: 15 additions & 9 deletions boards/st/nucleo_f746zg/nucleo_f746zg.dts
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Expand Up @@ -248,35 +248,41 @@ zephyr_udc0: &usbotg_fs {
#size-cells = <1>;
ranges;

/* set 4* 32KB */
/* Sectors 0 and 1 (2x32kByte) */
boot_partition: partition@0 {
compatible = "zephyr,mapped-partition";
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(128)>;
reg = <0x00000000 DT_SIZE_K(64)>;
};

storage_partition: partition@20000 {
/* Sectors 2 and 3 (2x32kByte) */
storage_partition: partition@10000 {
compatible = "zephyr,mapped-partition";
label = "storage";
reg = <0x00020000 DT_SIZE_K(256)>;
reg = <0x00010000 DT_SIZE_K(64)>;
};

slot0_partition: partition@60000 {
/* Sector 4 (128kByte): spare/unused */

/* Sectors 5 (256kByte) */
slot0_partition: partition@40000 {
compatible = "zephyr,mapped-partition";
label = "image-0";
reg = <0x00060000 DT_SIZE_K(128)>;
reg = <0x00040000 DT_SIZE_K(256)>;
};

/* Sectors 6 (256kByte) */
slot1_partition: partition@80000 {
compatible = "zephyr,mapped-partition";
label = "image-1";
reg = <0x00080000 DT_SIZE_K(128)>;
reg = <0x00080000 DT_SIZE_K(256)>;
};

scratch_partition: partition@a0000 {
/* Sectors 7 (256kByte) */
scratch_partition: partition@c0000 {
compatible = "zephyr,mapped-partition";
label = "image-scratch";
reg = <0x000a0000 DT_SIZE_K(256)>;
reg = <0x000c0000 DT_SIZE_K(256)>;
};
};
};
Expand Down
6 changes: 6 additions & 0 deletions boards/st/nucleo_f756zg/Kconfig.sysbuild
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@@ -0,0 +1,6 @@
# SPDX-FileCopyrightText: Copyright STMicroelectronics
# SPDX-License-Identifier: Apache-2.0

choice MCUBOOT_MODE
default MCUBOOT_MODE_SWAP_SCRATCH if BOOTLOADER_MCUBOOT
endchoice
6 changes: 6 additions & 0 deletions boards/st/nucleo_h743zi/Kconfig.sysbuild
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# SPDX-FileCopyrightText: Copyright STMicroelectronics
# SPDX-License-Identifier: Apache-2.0

choice MCUBOOT_MODE
default MCUBOOT_MODE_SWAP_SCRATCH if BOOTLOADER_MCUBOOT
endchoice
18 changes: 12 additions & 6 deletions boards/st/nucleo_h743zi/nucleo_h743zi.dts
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@@ -1,3 +1,3 @@
/*
* Copyright (c) 2020 Teslabs Engineering S.L.
*
Expand Down Expand Up @@ -147,8 +147,8 @@
&i2c1 {
pinctrl-0 = <&i2c1_scl_pb8 &i2c1_sda_pb9>;
pinctrl-names = "default";
scl-gpios = <&gpiob 8 GPIO_ACTIVE_HIGH>;

Check failure on line 150 in boards/st/nucleo_h743zi/nucleo_h743zi.dts

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boards/st/nucleo_h743zi/nucleo_h743zi.dts:150 Property is redefined in same closure. Delete property
See https://docs.zephyrproject.org/latest/contribute/style/devicetree.html for more details.
sda-gpios = <&gpiob 9 GPIO_ACTIVE_HIGH>;

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boards/st/nucleo_h743zi/nucleo_h743zi.dts:151 Property is redefined in same closure. Delete property
See https://docs.zephyrproject.org/latest/contribute/style/devicetree.html for more details.
status = "okay";
clock-frequency = <I2C_BITRATE_FAST>;
scl-gpios = <&gpiob 8 GPIO_ACTIVE_HIGH>;
Expand Down Expand Up @@ -262,12 +262,18 @@
read-only;
};

/* storage: 128KB for settings */
storage_partition: partition@20000 {
compatible = "zephyr,mapped-partition";
label = "storage";
reg = <0x00020000 DT_SIZE_K(128)>;
};
/* storage: 128KB for settings
*
* NVS needs at least 2 sectors of 32kB each max
* which does not match H743x internal flash whose
* sectors are all 128kB.
*
* storage_partition: partition@20000 {
* compatible = "zephyr,mapped-partition";
* label = "storage";
* reg = <0x00020000 DT_SIZE_K(128)>;
* };
*/

/* application image slot: 256KB */
slot0_partition: partition@40000 {
Expand Down
4 changes: 2 additions & 2 deletions boards/st/sensortile_box/sensortile_box.dts
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Expand Up @@ -251,10 +251,10 @@ zephyr_udc0: &usbotg_fs {
reg = <0x000f8000 DT_SIZE_K(24)>;
};

storage_partition: partition@fc000 {
storage_partition: partition@fe000 {
compatible = "zephyr,mapped-partition";
label = "storage";
reg = <0x000fc000 DT_SIZE_K(24)>;
reg = <0x000fe000 DT_SIZE_K(16)>;
};
};
};
Expand Down
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