topic Re: elftosb: change startAddress for custom bootloader application in i.MX Processors

elftosb: change startAddress for custom bootloader application

e_v_spronsen — Fri, 30 Apr 2021 09:03:46 GMT

I got problems generating bin image files for my application with a custom bootloader.

I changed the base address of my application to 0x70080000.

From the map file:

.after_vectors.reset
*(SORT_BY_ALIGNMENT(.isr_vector))
.isr_vector 0x70080000 0x2b8

0x70080308 ResetISR

I updated the .bd file:

options {
flags = 0x00;
startAddress = 0x70080000;
ivtOffset = 0x1000;
initialLoadSize = 0x2000;
}

sources {
elfFile = extern(0);
}

section (0)
{
}

When I run elftosb there is no output bin file.

If I run change startAddress = 0x7000000 back. I got a huge bin file that start at 0x7000000 and jumps to 0x70080000.

So how do I generate a bin file that starts at: 0x70080000?

Thanks!

Re: elftosb: change startAddress for custom bootloader application

e_v_spronsen — Tue, 04 May 2021 09:21:17 GMT

Any suggestions?

Re: elftosb: change startAddress for custom bootloader application

Alexis_A — Tue, 04 May 2021 14:43:40 GMT

Hello @e_v_spronsen,

Only to confirm, could you let me know the device that you're using and if the custom bootloader used is based in any of the SDK examples/app notes and which one?

Best Regards,

Alexis Andalon

Re: elftosb: change startAddress for custom bootloader application

e_v_spronsen — Wed, 05 May 2021 11:33:26 GMT

The flash based bootloader I made myself. The lack of documentation is worrisome. I tool a lot of effort to find the info needed.

The problem is: I can't make a signed image with start location 0x70080000 with elftosb.exe. The image always starts at 0x70000000.

Is the source code available for elftosb?