[U-Boot] [PATCH v2 07/10] tegra20: add SPL config options for seaboard

[Allen Martin <amartin@nvidia.com>]

On Wed, Jun 06, 2012 at 09:44:59AM -0700, Stephen Warren wrote:
> On 06/05/2012 03:20 PM, Allen Martin wrote:
> > Add SPL options to tegra20 config files and enable SPL build for
> > seaboard in boards.cfg
> 
> > diff --git a/include/configs/seaboard.h b/include/configs/seaboard.h
> 
> > +/* include overrides for SPL build */
> > +#ifdef CONFIG_SPL_BUILD
> > +#include "tegra2-spl.h"
> > +#endif
> 
> Perhaps we should add that to include/configs/tegra2-common-post.h,
> which I think all Tegra config headers now include at the end.

Ok.

> 
> > diff --git a/include/configs/tegra2-common.h b/include/configs/tegra2-common.h
> 
> > +/* Defines for SPL */
> > +#define CONFIG_SPL
> > +#define CONFIG_SPL_NAND_SIMPLE
> > +#define CONFIG_SPL_TEXT_BASE		0x00008000
> > +#define CONFIG_SPL_MAX_SIZE		0x00078000
> > +#define CONFIG_SYS_SPL_MALLOC_START	0x00080000
> > +#define CONFIG_SYS_SPL_MALLOC_SIZE	0x00010000
> > +#define CONFIG_SPL_STACK		0x0009fffc
> > +
> > +#define CONFIG_SPL_LIBCOMMON_SUPPORT
> > +#define CONFIG_SPL_LIBGENERIC_SUPPORT
> > +#define CONFIG_SPL_SERIAL_SUPPORT
> 
> > +#define CONFIG_SPL_POWER_SUPPORT
> 
> I'm not sure what that's for?

Hm, I put it in for the PMU driver, but maybe that's not actually
needed in the SPL.  I'll take a look.


> > +#define CONFIG_SPL_GPIO_SUPPORT
> 
> I believe only Seaboard needs that, not all boards. It'd be nice if we
> could just ignore the crufy SPI/GPIO switch on Seaboard too and punt
> this. Does anyone actually boot Seaboard using SPI? I use NAND and Tom
> uses eMMC...

Well I use SPI on my Springbank, but maybe I'm in the minority :^)


> > diff --git a/include/configs/tegra2-spl.h b/include/configs/tegra2-spl.h
> 
> > + * published by the Free Software Foundation; either version 2 of
> > + * the License, or (at your option) any later version.
> 
> Being a new file, this should be GPLv2 not GPLv2+.

Ok.

> 
> > +/* remove devicetree support */
> > +#ifdef CONFIG_OF_CONTROL
> > +#undef CONFIG_OF_CONTROL
> > +#endif
> 
> I don't /think/ #undef complains if the define isn't defined?

I've seen compilers that do, so I was just trying to play it safe.

> 
> Perhaps this (and the others) are better approached by not defining all
> these if building SPL though - what if a particular board's SPL actually
> wanted any of these?

That's what I had in v1 of the patch series, but it ends up adding a
lot of #ifdefs sprinkled through each board config file.  I'd like to
keep the SPL as small and minimal as possible such that it doesn't
need a lot of board specific configuration, just unavoidable things
like UART.

-Allen
-- 
nvpublic