README.md: Adds instructions how to obtain bootloader-details

[VeijoPesonen]

Fixes PelionIoT/mbed-bootloader#23

[iot-pdmc]

Thanks for your changes.
@ARMmbed/pdmc-integrators please review.

[VeijoPesonen]

@wajahat-ublox for your information.

[MarceloSalazar]

I'm not keen on adding a way to reverse-engineer information on the memory map.
Instead is best to point developers to the corresponding json file that will contain the information.
Usually, both the bootloader and application configuration are created at the same time.

[VeijoPesonen]

Instead is best to point developers to the corresponding json file that will contain the information.

I can't find the same information from the corresponding json file

[teetak01]

This is the manual way of generating the hash. Alternatively you can find the information as part of bootloader releases https://github.com/ARMmbed/mbed-bootloader/releases/tag/v4.1.1

There is a text-file which contain this information.

[MarceloSalazar]

Are you saying this is a kind of random value that's generated at compile time?
It would be great to understand the logic behinds this.

[wajahat-abbas]

Are you saying this is a kind of random value that's generated at compile time?
It would be great to understand the logic behinds this.

If i am not wrong, this is the address where bootloader lies. It is was earlier printed on serial but was later removed to reduce memory footprint. Now the only way is by reading it from .map file of the image.

More information on linked issue.

[VeijoPesonen]

Are you saying this is a kind of random value that's generated at compile time?
It would be great to understand the logic behinds this.

Please see the bootloader documentation about the subject

[MarceloSalazar]

@VeijoPesonen thanks for the link to the docs. It looks we're still referring to information generated on the serial port.
I'm ok to leave the comments on the docs on how to find out the hash info. In the future, I'll be looking at generating this automatically after the compile/link process.

[teetak01]

@MarceloSalazar that would most likely be a feature request for Mbed CLI to provide such functionality.

[MarceloSalazar]

Looks good as it's now

[teetak01]

@VeijoPesonen can you rebase this?

[VeijoPesonen]

Rebased.