[U-Boot] [PATCH] vxworks: Add CONFIG_VXWORKS_PREBOOT

[Niklaus Giger]

Am Mittwoch 23 September 2009 13:39:55 schrieb Tom:
> Niklaus Giger wrote:
> > The option CONFIG_VXWORKS_PREBOOT allows a board specific
> > vxworks_preboot to be run just before jumping into the
> > vxWorks images. This can be used to alter a register
> > which is used differently by U-boot and vxWorks.
<..>
> >  	puts ("## vxWorks terminated\n");
> > diff --git a/include/vxworks.h b/include/vxworks.h
> > index 1633904..df2b580 100644
> > --- a/include/vxworks.h
> > +++ b/include/vxworks.h
> > @@ -50,4 +50,8 @@ int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
> >  #define CONFIG_SYS_VXWORKS_SERVERNAME	"srv"
> >  #endif
> >  
> > +#ifdef CONFIG_VXWORKS_PREBOOT
> > +    void vxworks_preboot(void);
> > +#endif
> > +
> 
> Where is vxworks_preboot defined ?
This patch should only give the basis for its use.

I use it in one of my Netstal boards MCU25. Patch will come soon, as I am cleaning 
them up at the moment. But the relevant snippet is here:

board/netstal/mcu25/mcu25.c

void vxworks_preboot(void) {
    if (sys_install_requested())
        mtdcr(CPC0_CR1, CPCO_CR1_USE_EXTERNAL);
}

Is this okay for you? Or do you have more questions? 

Best regards

Niklaus
> 
> Tom
> 
> >  #endif
> 
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-- 
Niklaus Giger
Netstal Maschinen AG
CH-8752 Naefels