AW: [Ppcboot-users] Flash chips

[Stefan R. <ste...@es...>]

> > > Second, I wonder if it would be possible to parameterize the
> > flash routines
> > > so there needn't be a whole different set of flash routines for
> > each board?
> > > It's possible, I presume, given that the cursed visionICE I'm
> > using does so.
> >
> > It is possible. But I'm not sure if you want it. On  several  systems
> [...]
> >
> > I know that there are better ways to design code, but so far I  could
> > not  come up with a solution that is elegant, universal, and _small_.
> > Suggestions welcome.
>
> Of course. I wasn't thinking of a universal subroutine, though; more of a
> compile-time CFG_ driven thing. It would have tradeoffs; it'd be really
> nasty to add support for a new chip. So in my case, I would've been more
> frustrated. Still, one can dream.
>
>

Please take a look at the "flash.c" file in the cpci405 directory. It is not
fully universal but could be used as a start for the more universal flash
routines:

...

#ifdef CONFIG_ADCIOP
#define ADDR0           0x0aa9
#define ADDR1           0x0556
#define FLASH_WORD_SIZE unsigned char
#endif

#ifdef CONFIG_CPCI405
#define ADDR0           0x5555
#define ADDR1           0x2aaa
#define FLASH_WORD_SIZE unsigned short
#endif

Happy holidays,

Stefan Roese