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stm32: mcuboot: add support for mcuboot tests and samples #93862

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c65a97c
boards: st: add support for mcuboot test
djiatsaf-st Jul 29, 2025
81c085b
samples: sysbuild: with_mcuboot: update sample file
djiatsaf-st Jul 29, 2025
062a2eb
tests: boot: with_mcumgr: update testcase file
djiatsaf-st Jul 29, 2025
8c240fa
tests: boot: test_mcuboot: update testcase file
djiatsaf-st Jul 29, 2025
920d124
tests: drivers: flash: stm32: handle conflict for storage partition
djiatsaf-st Jul 31, 2025
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30 changes: 30 additions & 0 deletions boards/st/nucleo_c071rb/nucleo_c071rb.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
zephyr,shell-uart = &usart2;
zephyr,sram = &sram0;
zephyr,flash = &flash0;
zephyr,code-partition = &slot0_partition;
};

leds: leds {
Expand Down Expand Up @@ -178,3 +179,32 @@ zephyr_udc0: &usb {
pinctrl-names = "default";
status = "okay";
};

&flash0 {
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;

boot_partition: partition@0 {
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(64)>;
};

slot0_partition: partition@10000 {
label = "image-0";
reg = <0x00010000 DT_SIZE_K(30)>;
};

slot1_partition: partition@17800 {
label = "image-1";
reg = <0x00017800 DT_SIZE_K(30)>;
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Could you update the flash: tag in board specific YAML files to reflect the Zephyr application max flash size for each of these modified layouts?

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@JarmouniA JarmouniA Oct 10, 2025 •
edited
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Could you update the flash: tag in board specific YAML files to reflect the Zephyr application max flash size for each of these modified layouts?

No, it's not a good idea, unless the target is meant to be used exclusively with MCUboot.

Instead, there should be a board mcuboot variant, with - sysbuild=true in its YAML file and MIN(slot0,slot1) as flash size.

};

/* Set 4KB of storage at the end of 128KB flash */
storage_partition: partition@1f000 {
label = "storage";
reg = <0x0001f000 DT_SIZE_K(4)>;
};
Comment on lines +204 to +208
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don't know what the sector size is but for nvs this would need to be at least 3 sectors to be usable

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Indeed sectors (named "pages" in th SoC refman) are 2kB large.

};
};
22 changes: 19 additions & 3 deletions boards/st/nucleo_f091rc/nucleo_f091rc.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
zephyr,sram = &sram0;
zephyr,flash = &flash0;
zephyr,canbus = &can1;
zephyr,code-partition = &slot0_partition;
};

leds: leds {
Expand Down Expand Up @@ -149,10 +150,25 @@
#address-cells = <1>;
#size-cells = <1>;

/* Set 6Kb of storage at the end of the 256Kb of flash */
storage_partition: partition@3e800 {
boot_partition: partition@0 {
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(64)>;
};

slot0_partition: partition@10000 {
label = "image-0";
reg = <0x00010000 DT_SIZE_K(94)>;
};

slot1_partition: partition@27800 {
label = "image-1";
reg = <0x00027800 DT_SIZE_K(94)>;
};
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Does this actually work? At least as I remember it, without a scratch partition, there are specific requirements for the sizes, and specifically one slot must be exactly one sector larger than the other (we'd have to look up which is which.)


/* Set 4Kb of storage at the end of the 256Kb of flash */
storage_partition: partition@3f000 {
label = "storage";
reg = <0x0003e800 DT_SIZE_K(6)>;
reg = <0x0003f000 DT_SIZE_K(4)>;
};
};
};
Expand Down
16 changes: 16 additions & 0 deletions boards/st/nucleo_f103rb/nucleo_f103rb.dts
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Original file line number Diff line number Diff line change
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 @@ -167,6 +168,21 @@
#address-cells = <1>;
#size-cells = <1>;

boot_partition: partition@0 {
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(64)>;
};

slot0_partition: partition@10000 {
label = "image-0";
reg = <0x00010000 DT_SIZE_K(32)>;
};

slot1_partition: partition@18000 {
label = "image-1";
reg = <0x00018000 DT_SIZE_K(30)>;
};
Comment on lines +176 to +184
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sizes are different?

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Aren't the sizes required to be different? There is no scratch partition, so this is using one of the move algorithms.


/* Set 2KB of storage at the end of 128KB flash */
storage_partition: partition@1f800 {
label = "storage";
Expand Down
1 change: 1 addition & 0 deletions boards/st/nucleo_f207zg/nucleo_f207zg.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
zephyr,shell-uart = &usart3;
zephyr,sram = &sram0;
zephyr,flash = &flash0;
zephyr,code-partition = &slot0_partition;
};

leds: leds {
Expand Down
29 changes: 29 additions & 0 deletions boards/st/nucleo_f746zg/nucleo_f746zg.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,7 @@
zephyr,flash = &flash0;
zephyr,dtcm = &dtcm;
zephyr,canbus = &can1;
zephyr,code-partition = &slot0_partition;
};

leds: leds {
Expand Down Expand Up @@ -235,3 +236,31 @@ zephyr_udc0: &usbotg_fs {
&vbat {
status = "okay";
};

&flash0 {
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;

boot_partition: partition@0 {
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(64)>;
};

storage_partition: partition@10000 {
label = "storage";
reg = <0x00010000 DT_SIZE_K(192)>;
};

slot0_partition: partition@40000 {
label = "image-0";
reg = <0x00040000 DT_SIZE_K(448)>;
};

slot1_partition: partition@b0000 {
label = "image-1";
reg = <0x000b0000 DT_SIZE_K(320)>;
};
Comment on lines +256 to +264
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sizes are very different? If using different sizes then the extra sector should be in slot 1 and swap using offset should be used rather than swap using move

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Thank you for your feedback.
Before addressing the comments, if you could please provide some references on algorithm-based partition distribution or other useful resources, they would be very helpful.

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Seen F746xx SoCs flash sectors distribution (rm0385 rev9/table 3/page 79), I think the sole supported layout requires: slot0 is 2x256kB, slot1 is 1x256kB, storage is 3x32kB (placed at flash start) and boot occupies a signle 128kB sector.

};
};
16 changes: 16 additions & 0 deletions boards/st/nucleo_g071rb/nucleo_g071rb.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
zephyr,shell-uart = &usart2;
zephyr,sram = &sram0;
zephyr,flash = &flash0;
zephyr,code-partition = &slot0_partition;
};

leds: leds {
Expand Down Expand Up @@ -171,6 +172,21 @@
#address-cells = <1>;
#size-cells = <1>;

boot_partition: partition@0 {
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(64)>;
};

slot0_partition: partition@10000 {
label = "image-0";
reg = <0x00010000 DT_SIZE_K(30)>;
};

slot1_partition: partition@17800 {
label = "image-1";
reg = <0x00017800 DT_SIZE_K(30)>;
};

/* Set 4KB of storage at the end of 128KB flash */
storage_partition: partition@1f000 {
label = "storage";
Expand Down
10 changes: 5 additions & 5 deletions boards/st/nucleo_g474re/nucleo_g474re.dts
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Expand Up @@ -177,17 +177,17 @@ stm32_lp_tick_source: &lptim1 {

boot_partition: partition@0 {
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(34)>;
reg = <0x00000000 DT_SIZE_K(64)>;
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@JarmouniA JarmouniA Aug 18, 2025 •
edited
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48KB is the minimum MCUboot partition size, Flash sectors are atmost 4KB on this SoC, so why give more to MCUboot?
Same for other Flash-constrainted SoCs with sub-32KB sector size.

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I just based it on how the nucleo_wba55cg was added, and also compared the sizes of the flash sectors/pages in the refman and adapted with the rest so that it worked on the tests.
If you have some references on the rules to follow, that would be welcome.

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https://docs.mcuboot.com/design.html#image-slots

};

slot0_partition: partition@8800 {
slot0_partition: partition@10000 {
label = "image-0";
reg = <0x00008800 DT_SIZE_K(240)>;
reg = <0x000010000 DT_SIZE_K(192)>;
};

slot1_partition: partition@44800 {
slot1_partition: partition@40000 {
label = "image-1";
reg = <0x00044800 DT_SIZE_K(234)>;
reg = <0x00040000 DT_SIZE_K(192)>;
};

/* Set 4Kb of storage at the end of the 512Kb of flash */
Expand Down
21 changes: 6 additions & 15 deletions boards/st/nucleo_h743zi/nucleo_h743zi.dts
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Expand Up @@ -252,28 +252,19 @@ zephyr_udc0: &usbotg_fs {
read-only;
};

/* storage: 128KB for settings */
storage_partition: partition@20000 {
label = "storage";
reg = <0x00020000 DT_SIZE_K(128)>;
};

/* application image slot: 256KB */
slot0_partition: partition@40000 {
slot0_partition: partition@20000 {
label = "image-0";
reg = <0x00040000 DT_SIZE_K(256)>;
reg = <0x00020000 DT_SIZE_K(384)>;
};

/* backup slot: 256KB */
slot1_partition: partition@80000 {
label = "image-1";
reg = <0x00080000 DT_SIZE_K(256)>;
reg = <0x00080000 DT_SIZE_K(384)>;
};

/* swap slot: 128KB */
scratch_partition: partition@c0000 {
label = "image-scratch";
reg = <0x000c0000 DT_SIZE_K(128)>;
storage_partition: partition@e0000 {
label = "storage";
reg = <0x000e0000 DT_SIZE_K(128)>;
};
};
};
Expand Down
30 changes: 30 additions & 0 deletions boards/st/nucleo_l073rz/nucleo_l073rz.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
zephyr,shell-uart = &usart2;
zephyr,sram = &sram0;
zephyr,flash = &flash0;
zephyr,code-partition = &slot0_partition;
};

leds: leds {
Expand Down Expand Up @@ -185,3 +186,32 @@ stm32_lp_tick_source: &lptim1 {
&vref {
status = "okay";
};

&flash0 {
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;

boot_partition: partition@0 {
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(64)>;
};

slot0_partition: partition@10000 {
label = "image-0";
reg = <0x00010000 DT_SIZE_K(64)>;
};

slot1_partition: partition@20000 {
label = "image-1";
reg = <0x00020000 DT_SIZE_K(62)>;
};

/* Set 2KB of storage at the end of 128KB flash */
storage_partition: partition@2f800 {
label = "storage";
reg = <0x0001f800 DT_SIZE_K(2)>;
};
};
};
16 changes: 16 additions & 0 deletions boards/st/nucleo_l152re/nucleo_l152re.dts
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Original file line number Diff line number Diff line change
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 @@ -147,6 +148,21 @@
#address-cells = <1>;
#size-cells = <1>;

boot_partition: partition@0 {
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(64)>;
};

slot0_partition: partition@10000 {
label = "image-0";
reg = <0x00010000 DT_SIZE_K(220)>;
};

slot1_partition: partition@47000 {
label = "image-1";
reg = <0x00047000 DT_SIZE_K(220)>;
};

/* Set 8KB of storage at the end of 512KB flash */
storage_partition: partition@7e000 {
label = "storage";
Expand Down
19 changes: 7 additions & 12 deletions boards/st/nucleo_wb55rg/nucleo_wb55rg.dts
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Expand Up @@ -232,27 +232,22 @@ zephyr_udc0: &usb {

boot_partition: partition@0 {
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(48)>;
reg = <0x00000000 DT_SIZE_K(64)>;
};

slot0_partition: partition@c000 {
slot0_partition: partition@10000 {
label = "image-0";
reg = <0x0000c000 DT_SIZE_K(400)>;
reg = <0x00010000 DT_SIZE_K(484)>;
};

slot1_partition: partition@70000 {
slot1_partition: partition@89000{
label = "image-1";
reg = <0x00070000 DT_SIZE_K(400)>;
reg = <0x00089000 DT_SIZE_K(476)>;
};

scratch_partition: partition@d4000 {
label = "image-scratch";
reg = <0x000d4000 DT_SIZE_K(16)>;
};

storage_partition: partition@d8000 {
storage_partition: partition@100000 {
label = "storage";
reg = <0x000d8000 DT_SIZE_K(8)>;
reg = <0x00100000 DT_SIZE_K(4)>;
};
};
};
Expand Down
10 changes: 5 additions & 5 deletions boards/st/nucleo_wl55jc/nucleo_wl55jc.dts
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Expand Up @@ -205,18 +205,18 @@ stm32_lp_tick_source: &lptim1 {

boot_partition: partition@0 {
label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(32)>;
reg = <0x00000000 DT_SIZE_K(40)>;
read-only;
};

slot0_partition: partition@8000 {
slot0_partition: partition@a000 {
label = "image-0";
reg = <0x00008000 DT_SIZE_K(104)>;
reg = <0x0000a000 DT_SIZE_K(100)>;
};

slot1_partition: partition@22000 {
slot1_partition: partition@23000 {
label = "image-1";
reg = <0x00022000 DT_SIZE_K(104)>;
reg = <0x00023000 DT_SIZE_K(100)>;
};

/*
Expand Down
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