[ECOS] redboot on STM3240G-EVAL board

Sergei Gavrikov sergei.gavrikov@gmail.com
Wed Oct 15 14:45:00 GMT 2014


On Wed, 15 Oct 2014, Oleg Uzenkov wrote:

> > For binaries you have to know the first LMA address (rom_vectors
> > address) to specify that address on a command line.
> >
> > For binary image
> >
> >    load -m x -r -b <LMA>
> >    fis create -b <LMA> <name>
> Please, let me know what do you think of this:
>
> 1) I have built app.elf and app.bin for *RAM* startup
> (SECTION_rom_vectors: LMA == 0x64008000 ) (memory layout is
> mlt_cortexm_stm32x0g_eval_ram.ldi)
>
> 2) I can successfuly run app.elf under redboot (i.e. >load -m x; >go)
>
> 3) When I load app.bin like this:
> >load -m x -r -b 0x64008000
> >go 0x64008000
> or
> >go

RedBoot 'load' command does stat info about 'Entry point'. For example
on my ARM target

  RedBoot> load -m y
  Entry point: 0x81008040, address range: 0x81008000-0x81013890
  xyzModem - CRC mode, 627(SOH)/0(STX)/0(CAN) packets, 2 retries
  RedBoot>

Load address 0x81008000 and entry point (LMA of .text) is 0x81008040.

If I load a binary, I got something likes this

  RedBoot> load -m y -r -b 0x81008000
  CRaw file loaded 0x81008000-0x8101388f, assumed entry at 0x81008000
  xyzModem - CRC mode, 372(SOH)/0(STX)/0(CAN) packets, 3 retries
  RedBoot>

RedBoot has no clue where start from (it can guess only, 'assumed
entry')

>From your old message

  http://ecos.sourceware.org/ml/ecos-discuss/2014-10/msg00007.html

I see that after loading PC register will be set to 0x64008110, so try

  RedBoot> go 0x64008110

> I get rubbish ($T080f:00800064;0d:e8cf1b64;)

Connect GDB to get it.

> (i also tried to create fis and load and run image from fis, same
> result, i.e.
> >fis create -b 0x64008000 app; >fis load app; >go)
>
> any ideas where I am wrong?

See/try above.

>
> Did anyone manage to execute .bin file from Redboot?

It should work.

HTH

Sergei

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