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RE: ecos-3.0 current stm32 bug?
Both the bootloader and the application are ROM startup type?
What about the address of the hal_vsr_table in the bootloader and application?
Christophe
> -----Original Message-----
> From: ecos-discuss-owner@ecos.sourceware.org [mailto:ecos-discuss-
> owner@ecos.sourceware.org] On Behalf Of Philipp Meier
> Sent: 24. august 2011 16:11
> To: ecos discuss
> Subject: Re: [ECOS] ecos-3.0 current stm32 bug?
>
> -------- Original-Nachricht --------
> > Datum: Wed, 24 Aug 2011 14:35:15 +0300 (EEST)
> > Von: Sergei Gavrikov <sergei.gavrikov@gmail.com>
> > An: Philipp Meier <pme.neratec@gmx.ch>
> > CC: ecos-discuss@ecos.sourceware.org
> > Betreff: Re: [ECOS] ecos-3.0 current stm32 bug?
>
> > On Wed, 24 Aug 2011, Philipp Meier wrote:
> >
> > > Hi all
> > >
> > > I have a firmware split into two parts:
> > > 1. a "bootloader"
> > > 2. a "application"
> > >
> > > I now need to move from Windows (cygwin) development environment to
> > > Linux development environment and at the same time use the current
> > > ecos version (i.e. what I get when I clone the ecos mercurial
> > > repository) instead of the "original" (back in 2009) ecos-3.0
> version.
> > >
> > > The situation is now as follows:
> > > 1. I download (to my stm32 device) the Linux/ecos-current built
> > > "bootloader"
> > > 2. I download (to my stm32 device) the Linux/ecos-current built
> > > "application"
> > > 3. I start the application and in line 187 of file
> > > 'hal/cortexm/arch/current/src/hal_msic.c' instead of branching to
> > > 'hal_switch_state_vsr' it branches to 'hal_default_exception_vsr'
> > > function!
> > >
> > > To analyze the problem I then:
> > > 4. Downloaded (to my stm32 device) the cyginw/ecos-3.0 built
> > > "bootloader"
> > > 5. Still having the Linux/ecos-current built "application"
> > > 6. And in line 187 (of the above mentioned file) it branches (as
> it
> > > should) to 'hal_switch_state_vsr' and the application is starting
> up
> > > and running fine!
> > >
> > > Who can give me a hint about
> > > * what has been changed in ecos-current cortexm stm32 that could
> > > cause this problem
> >
> > Hi Philipp,
> >
> > I think you can use Mercurial for that
> >
> > % hg tags | grep v3
> > ecos-v3_0-branchpoint 2821:b5a12bb6a634
> >
> > % hg log -r ecos-v3_0-branchpoint:tip packages/hal/cortexm/arch |
> less
> > -FRSX
> >
> > or (may be)
> >
> > % hg log --patch -r ecos-v3_0-branchpoint:tip \
> > packages/hal/cortexm/arch/current/src/hal_misc.c | less -FRSX
> >
> > etc.
> >
> > > * or what else I could analyze to find out why ecos-current (built
> on
> > > Linux, arm-eabi-gcc (eCosCentric GNU tools 4.3.2-sw); under cygwin
> I
> > > also used the arm-eabi-gcc version 4.3.2 pre-built by eCosCentric)
> >
> > Also you would check the Linux build for ecos-3.0 codebase
> >
> > # get old (working) code
> > % hg update ecos-v3_0-branchpoint
> >
> > Rebuild your loader and application under Linux and try it (use fresh
> > directories for builds). After all do not forget up-to-date eCos HG
> > repository (hg update default).
> >
> > Feel free to submit a bug report (if you'll find something) via eCos
> > Bugzilla System http://bugs.ecos.sourceware.org/
> >
> >
> > Sergei
> >
> > > Regards
> > > Philipp
>
> Hello Sergei and others
>
> Thanks a lot for your tips about how to find out the differences
> between the versions.
>
> I now went a step back and built (under Linux) my "bootloader" and my
> "application" under Linux using the same ecos sources and configuration
> files as when I built them under Windows/cygwin.
>
> Therefore - I wanted to see if the problem comes from building under
> Linux, or from changes in the ecos stm32 parts (or any other ecos
> parts).
>
> But - I have the same problem as described above; i.e. the problem must
> be somehow in my Linux toolchain?
>
> Therefore my question now is:
> Can anybody give me some background information about how the "__asm__
> volatile( "swi" )" statement in line 188 of
> packages/hal/cortexm/arch/v3_0/src/hal_misc.c (or "swi 0" line 187 in
> packages/hal/cortexm/arch/current/src/hal_misc.c when using ecos-
> current) is interpreted on stm32? What could be the reason that it does
> not jumps to "hal_switch_state_vsr" but instead jumps to
> "hal_default_exception_vsr"?
>
> The lines where the different behaviour is look like this:
> hal_vsr_table[CYGNUM_HAL_VECTOR_SERVICE] =
> (CYG_ADDRESS)hal_switch_state_vsr;
>
> __asm__ volatile( "swi" );
>
> ...
>
> In the good case these leads to a jump/branch to hal_switch_state_vsr
> and in the bad case it jumps/branches to hal_default_exception_vsr and
> therefore my application does not starts up.
>
> Thanks for any help.
>
> Philipp
> --
> P.S.: Sorry Sergei - I did not mean to reply directly to you but like
> this to the mailing list.
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