PM Partitions and external flash

RE: PM Partitions and external flash

AndyM — Fri, 10 Jan 2025 13:24:34 GMT

Thank you for help

I will check those out

RE: PM Partitions and external flash

Amanda Hsieh — Thu, 09 Jan 2025 19:07:22 GMT

Hi,

[quote user="AndyM"]What if I have a different part? Is there a generic driver that I can use?[/quote]

Our QSPI NOR driver is designed to be fairly generic and should work with many SPI NOR flash devices, not just the mx25r64. However, you will need to make some modifications to the device tree overlay file to match your specific flash chip.

The spi_nor driver in Zephyr (which Nordic Connect SDK is based on) is quite generic. You can modify the device tree overlay file to configure it for your specific flash chip. See this jesd216 sample.

[quote user="AndyM"]1. My SDK 2.6.1 does not have SB_CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY - at least I couldnt find it .[/quote]

NCS v2.6.1 is not forced to use sysbild. You can use CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY in NCS v2.6.1.

[quote user="AndyM"]2. I don't see the test project setting CONFIG_NORDIC_QSPI_NOR=y or any other settings related to external flash.[/quote]

See this spi_flash sample.

Regards,
Amanda H.

RE: PM Partitions and external flash

AndyM — Thu, 09 Jan 2025 14:52:01 GMT

The MCUboot with external flash test code you referred me to uses mx25r64 NOR flash i.e
/ {
chosen {
nordic,pm-ext-flash = &mx25r64;
};
};
What if I have a different part? Is there a generic driver that I can use?
Also
1. My SDK 2.6.1 does not have SB_CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY - at least I couldnt find it .

2. I don't see the test project setting CONFIG_NORDIC_QSPI_NOR=y or any other settings related to external flash.

Is there a full example available?

Thanks

RE: PM Partitions and external flash

AndyM — Tue, 07 Jan 2025 22:14:13 GMT

Thanks, I'll give it a try as soon as I get the hardware.

RE: PM Partitions and external flash

Amanda Hsieh — Mon, 06 Jan 2025 20:13:19 GMT

Hi Andy,

There is an MCUboot with external flash test in the nRF Connect SDK, which can be used as a reference. For NCS v2.9.0, you can enable SB_CONFIG_PM_EXTERNAL_FLASH_MCUBOOT_SECONDARY to place the secondary MCUboot update partition in external flash. Also, see the External flash memory partitions.

Regards,
Amanda H.