Can I share bootloaders between MCUs?

[derekcook]

Hello, 

Is it possible to use a bootloader developed for the KV31 with the KV56?

[derekcook]

I see RAM is at 0x0000 to 0x10000. Is this fixed? If so I guess my bootloader must be from 0x10000000 to 0x1000a000 and my application can start at 0x1000a000

[EdwinHz]

Hi @derekcook!

You are correct. The RAM address is fixed, but the code address starts at 0x1000_0000. Table 5-1 of the datasheet shows the Memory Map:

BR,

Edwin.

[derekcook]

I am following this document to port the KV58F220M bootloader to the KV56. https://www.nxp.com/docs/en/reference-manual/MCUBOOTRM.pdf

With the KV31 we had our bootloader load to flash at 0xA000. We can still load to the same flash location with KV56? I noticed the default location was 0x1000a000.

[derekcook]

It looks like there is not a MCUBOOT specifically for the MKV56F512xxx24. However, there is a bootloader for the KV58F220M. I assume that's because this same bootloader works with the MKV56?

[EdwinHz]

Hi @derekcook 

I’m afraid this isn’t possible.

Even though they are both MCUs from the same series, the differences between these two MCUs wouldn’t allow them to share bootloaders.

BR,

Edwin.