Re: [ECOS] General Q: Calling RedBoot CLI function from eCos app

[Andrew Lunn <andrew@lunn.ch>]

On Wed, May 30, 2007 at 04:03:14PM -0500, John Mills wrote:
> Andrew -
> 
> Thanks for the reply.
> 
> On Wed, 30 May 2007, Andrew Lunn wrote:
> 
> > On Wed, May 30, 2007 at 02:11:43PM -0500, John Mills wrote:
> > > Andrew -
> > > 
> > > Thanks for the lead, but in my eCos app that macro just expands to NULL.  
> > > The same code line works perfectly in RedBoot's 'main.c', however.
> > 
> > What is the value of CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_VERSION in you
> > application? See hal/common/current/src/hal_if.c
> 
> I find in my package configuration:
> 
> /home/jmills/depot/trapeze/ECOSBUILD/dist/install/include/pkgconf/hal.h:
>  #define CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_VERSION 1
> 
> If I understand your track here, that would activate the following lines
> in 'hal_if.c':
> 
> #ifdef CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_VERSION
>     CYGACC_CALL_IF_MONITOR_VERSION_SET(0);
> #endif
> 
> which, I suppose, would in turn cause
>     CYGACC_CALL_IF_MONITOR_VERSION() to resolve as '0', or NULL.
> 
> Hence my <null> print string.
> 
> Is that sensible?

Yes, that is what i was thinking.  So the next question is why is it
set to 1?

            cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_CLAIM_VERSION {
                display       "Claim version virtual vectors"
                default_value { CYGSEM_HAL_VIRTUAL_VECTOR_INIT_WHOLE_TABLE }
                description   "
                    This option will cause the version
                    virtual vectors to be claimed."
            }

Is CYGSEM_HAL_VIRTUAL_VECTOR_INIT_WHOLE_TABLE true?

            cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_INIT_WHOLE_TABLE {
                display       "Initialize whole of virtual vector table"
                default_value { CYG_HAL_STARTUP != "RAM" || !CYGSEM_HAL_USE_ROM_MONITOR }
 
do you have a RAM image? Is CYGSEM_HAL_USE_ROM_MONITOR true?

   Andrew

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