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boards: st: nucleo_f429zi: Rework flash partition

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STM32F4 series flash layout is as follows:
    	{.pages_count = 4, .pages_size = KB(16)},
    	{.pages_count = 1, .pages_size = KB(64)},
    	{.pages_count = 7, .pages_size = KB(128)}

Since NVS subsys requires 2 sectors of max 32K in total, provide a
flash partition which respects this constraint using 2 of the 16K sectors
in the beginning of the layout.

Provide a compatible flash partition usable with mcuboot, but keep the
storage partition commented as its usage is not compatible with use w/o
mcuboot enabled (in this case main image starts as offset 0 which conflicts
with storage partition).

Note that it isn't possible either to get main image starting directly
in the 128K sectors w/o bootloader as boot flash address can't be
configured.

Signed-off-by: Erwan Gouriou <erwan.gouriou@st.com>
This commit is contained in:
Erwan Gouriou 2024-11-13 16:49:00 +01:00 • committed by Benjamin Cabé
commit 3583492890
2 changed files with 13 additions and 8 deletions
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20
boards/st/nucleo_f429zi/nucleo_f429zi.dts
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@ -194,18 +194,24 @@ zephyr_udc0: &usbotg_fs {
#address-cells = <1>; #address-cells = <1>;
#size-cells = <1>; #size-cells = <1>;
/* 64KB for bootloader */ /* 32KB for bootloader */
boot_partition: partition@0 { boot_partition: partition@0 {
label = "mcuboot"; label = "mcuboot";
reg = <0x00000000 DT_SIZE_K(64)>; reg = <0x00000000 DT_SIZE_K(32)>;
read-only; read-only;
}; };
/* storage: 64KB for settings */ /*
storage_partition: partition@10000 { * nvs subsystem requires 2 sectors with a max total of 32K
label = "storage"; * On F4 series, the only option is to use the following
reg = <0x00010000 DT_SIZE_K(64)>; * partition, which is compatible with mcuboot usage.
}; * Keep it commented in order it is not used by CI.
*
* storage_partition: partition@8000 {
* label = "storage";
* reg = <0x0008000 DT_SIZE_K(32)>;
* };
*/
/* application image slot: 256KB */ /* application image slot: 256KB */
slot0_partition: partition@20000 { slot0_partition: partition@20000 {

1
boards/st/nucleo_f429zi/nucleo_f429zi.yaml
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@ -23,7 +23,6 @@ supported:
- adc - adc
- dac - dac
- dma - dma
- nvs
- rtc - rtc
- usbd - usbd
vendor: st vendor: st