[U-Boot] [PATCH 6/10] driver/ifc: define nand_spl_load_image() for SPL

[Scott Wood <scottwood@freescale.com>]

On Wed, 2014-04-02 at 09:51 +0530, Prabhakar Kushwaha wrote:
> On 4/2/2014 3:33 AM, Scott Wood wrote:
> > On Mon, 2014-03-31 at 15:34 +0530, Prabhakar Kushwaha wrote:
> >> nand_spl_load_image() can also be used for non TPL framework.
> >>
> >> Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
> >> ---
> >>   drivers/mtd/nand/fsl_ifc_spl.c |    4 ++--
> >>   1 file changed, 2 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/drivers/mtd/nand/fsl_ifc_spl.c b/drivers/mtd/nand/fsl_ifc_spl.c
> >> index 2f82f7c..8a7a3a3 100644
> >> --- a/drivers/mtd/nand/fsl_ifc_spl.c
> >> +++ b/drivers/mtd/nand/fsl_ifc_spl.c
> >> @@ -88,7 +88,7 @@ static inline int bad_block(uchar *marker, int port_size)
> >>   		return __raw_readw((u16 *)marker) != 0xffff;
> >>   }
> >>   
> >> -#ifdef CONFIG_TPL_BUILD
> >> +#if defined(CONFIG_TPL_BUILD) || defined(CONFIG_SPL_BUILD)
> >>   int nand_spl_load_image(uint32_t offs, unsigned int uboot_size, void *vdst)
> >>   #else
> >>   static int nand_load(uint32_t offs, unsigned int uboot_size, void *vdst)
> >> @@ -221,7 +221,7 @@ static int nand_load(uint32_t offs, unsigned int uboot_size, void *vdst)
> >>    * Defines a static function nand_load_image() here, because non-static makes
> >>    * the code too large for certain SPLs(minimal SPL, maximum size <= 4Kbytes)
> >>    */
> >> -#ifndef CONFIG_TPL_BUILD
> >> +#if !defined(CONFIG_TPL_BUILD) && !defined(CONFIG_SPL_BUILD)
> >>   #define nand_spl_load_image(offs, uboot_size, vdst) \
> >>   	nand_load(offs, uboot_size, vdst)
> >>   #endif
> > When would you ever use this file without having CONFIG_SPL_BUILD
> > defined?
> 
> I want to use nand_spl_load_image in spl.c as it is defined in 
> include/nand.h
> 
> Unfortunately, it is only defined for CONFIG_TPL_BUILD.
> If i remove !CONFIG_SPL_BUILD from second place. this will enable 
> nand_load() which i don't want to use.

I'm not saying to remove !CONFIG_SPL_BUILD.  I'm saying to remove the
ifdef (and all the nand_load stuff) entirely.

> will it be possible to change all nand_load to nand_spl_load_image() 
> permanently.  the only impact I see of "static".
> nand_load is static and nand_spl_load_image is not static function 
> declaration.

Yes.  It was done on eLBC because using a static function saved a few
critical bytes.  IFC has more breathing room due to the 8K SPL, so
apparently it doesn't need this.

-Scott