[U-Boot] [PATCH] SPL: NOR: Add CONFIG_SPL_NOR_COPY_ENTIRE_IMAGE define to enable whole image copy from NOR

[Lukasz Majewski <l.majewski@majess.pl>]

Hi Marek,

> On 11/28/2016 10:09 PM, Lukasz Majewski wrote:
> > This define gives the possibility to copy entire image (including
> > header - e.g. u-boot.img) from NOR parallel memory to e.g. SDRAM.
> > The current code only supports loading the raw binary image (the
> > u-boot.bin).
> > 
> > The legacy behavior is preserved, since other board don't enabled
> > this option.
> 
> Sooooo, what's the usecase again ? ;-) 

:-)

The use case is to allow u-boot.img being loaded from Parallel NOR. The
current code only supports u-boot.bin.

This code is crucial for boards booting from NOR, as a board which
support will be sent soon to u-boot ML :-).

Best regards,
?ukasz Majewski

> I still miss it being
> documented.
> 
> > Signed-off-by: Lukasz Majewski <l.majewski@majess.pl>
> > ---
> > Changes for v2:
> > - Update to code to apply on v2016.11+
> > Changes for v3:
> > - Write better commit mesage to explain the problem
> > 
> > ---
> >  common/spl/Kconfig   | 10 ++++++++++
> >  common/spl/spl_nor.c | 12 +++++++++---
> >  2 files changed, 19 insertions(+), 3 deletions(-)
> > 
> > diff --git a/common/spl/Kconfig b/common/spl/Kconfig
> > index df9e0ce..d31b26d 100644
> > --- a/common/spl/Kconfig
> > +++ b/common/spl/Kconfig
> > @@ -399,6 +399,16 @@ config SPL_NOR_SUPPORT
> >  	  a memory-mapped device makes it very easy to access.
> > Loading from NOR is typically achieved with just a memcpy().
> >  
> > +config SPL_NOR_COPY_ENTIRE_IMAGE
> > +	bool
> > +	depends on SPL_NOR_SUPPORT
> > +	prompt "Copy entire image from NOR memory"
> > +	default n
> > +	help
> > +	  By default the SPL NOR driver supports copying only
> > payload to
> > +	  destination address. Say Y if you want to copy entire
> > image (including
> > +	  its image header).
> > +
> >  config SPL_ONENAND_SUPPORT
> >  	bool "Support OneNAND flash"
> >  	depends on SPL
> > diff --git a/common/spl/spl_nor.c b/common/spl/spl_nor.c
> > index 6bfa399..44f3e99 100644
> > --- a/common/spl/spl_nor.c
> > +++ b/common/spl/spl_nor.c
> > @@ -10,13 +10,15 @@
> >  static int spl_nor_load_image(struct spl_image_info *spl_image,
> >  			      struct spl_boot_device *bootdev)
> >  {
> > +	void *img_src;
> >  	int ret;
> > +#ifndef CONFIG_SPL_NOR_COPY_ENTIRE_IMAGE
> >  	/*
> >  	 * Loading of the payload to SDRAM is done with skipping of
> >  	 * the mkimage header in this SPL NOR driver
> >  	 */
> >  	spl_image->flags |= SPL_COPY_PAYLOAD_ONLY;
> > -
> > +#endif
> >  #ifdef CONFIG_SPL_OS_BOOT
> >  	if (!spl_start_uboot()) {
> >  		const struct image_header *header;
> > @@ -65,9 +67,13 @@ static int spl_nor_load_image(struct
> > spl_image_info *spl_image, if (ret)
> >  		return ret;
> >  
> > +	img_src = (void *)CONFIG_SYS_UBOOT_BASE;
> > +#ifndef CONFIG_SPL_NOR_COPY_ENTIRE_IMAGE
> > +	img_src += sizeof(struct image_header));
> > +#endif
> > +
> >  	memcpy((void *)(unsigned long)spl_image->load_addr,
> > -	       (void *)(CONFIG_SYS_UBOOT_BASE + sizeof(struct
> > image_header)),
> > -	       spl_image->size);
> > +	       img_src, spl_image->size);
> >  
> >  	return 0;
> >  }
> > 
> 
> 

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