[U-Boot] [PATCH 2/6] nand: Add SPL_NAND support to mxc_nand_spl

["Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>]

On Friday, April 19, 2013 10:38:48 AM, Beno?t Th?baudeau wrote:
> Dear Marek Vasut,
> 
> On Friday, April 19, 2013 6:10:51 AM, Marek Vasut wrote:
> > Add support for generic NAND SPL via the SPL framework into the
> > mxc_nand_spl driver. This is basically just a simple rename and
> > publication of the already implemented functions. To avoid the
> > old function which are used with the nand_spl/ stuff getting in
> > the way of NAND SPL framework, the macro CONFIG_SPL_NAND_LEGACY
> > was introduced and two remaining legacy boards were adjusted.
> > These board need to be either fixed or removed in the long run,
> > but I don't have either.
> > 
> > Also make sure the requested payload is aligned to full pages,
> > otherwise this simple driver fails to load the last page.
> > 
> > Signed-off-by: Marek Vasut <marex@denx.de>
> > Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
> > Cc: Beno?t Th?baudeau <benoit.thebaudeau@advansee.com>
> > Cc: Fabio Estevam <fabio.estevam@freescale.com>
> > Cc: Scott Wood <scottwood@freescale.com>
> > Cc: Stefano Babic <sbabic@denx.de>
> > Cc: Tom Rini <trini@ti.com>
> > ---
> >  drivers/mtd/nand/mxc_nand_spl.c | 13 ++++++++++---
> >  include/configs/mx31pdk.h       |  1 +
> >  include/configs/tx25.h          |  1 +
> >  3 files changed, 12 insertions(+), 3 deletions(-)
> > 
> > diff --git a/drivers/mtd/nand/mxc_nand_spl.c
> > b/drivers/mtd/nand/mxc_nand_spl.c
> > index 09f23c3..8ff03c9 100644
> > --- a/drivers/mtd/nand/mxc_nand_spl.c
> > +++ b/drivers/mtd/nand/mxc_nand_spl.c
> > @@ -290,7 +290,7 @@ static int is_badblock(int pagenumber)
> >  	return 0;
> >  }
> >  
> > -static int nand_load(unsigned int from, unsigned int size, unsigned char
> > *buf)
> > +int nand_spl_load_image(uint32_t from, unsigned int size, void *buf)
> >  {
> >  	int i;
> >  	unsigned int page;
> > @@ -303,6 +303,7 @@ static int nand_load(unsigned int from, unsigned int
> > size, unsigned char *buf)
> >  	page = from / CONFIG_SYS_NAND_PAGE_SIZE;
> >  	i = 0;
> >  
> > +	size = roundup(size, CONFIG_SYS_NAND_PAGE_SIZE);
> >  	while (i < size / CONFIG_SYS_NAND_PAGE_SIZE) {
> >  		if (nfc_read_page(page, buf) < 0)
> >  			return -1;
> > @@ -332,6 +333,7 @@ static int nand_load(unsigned int from, unsigned int
> > size, unsigned char *buf)
> >  	return 0;
> >  }
> >  
> > +#ifdef CONFIG_SPL_NAND_SUPPORT_LEGACY
> >  /*
> >   * The main entry for NAND booting. It's necessary that SDRAM is already
> >   * configured and available since this code loads the main U-Boot image
> > @@ -345,8 +347,9 @@ void nand_boot(void)
> >  	 * CONFIG_SYS_NAND_U_BOOT_OFFS and CONFIG_SYS_NAND_U_BOOT_SIZE must
> >  	 * be aligned to full pages
> >  	 */
> > -	if (!nand_load(CONFIG_SYS_NAND_U_BOOT_OFFS, CONFIG_SYS_NAND_U_BOOT_SIZE,
> > -		       (uchar *)CONFIG_SYS_NAND_U_BOOT_DST)) {
> > +	if (!nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS,
> > +			CONFIG_SYS_NAND_U_BOOT_SIZE,
> > +			(uchar *)CONFIG_SYS_NAND_U_BOOT_DST)) {
> >  		/* Copy from NAND successful, start U-boot */
> >  		uboot = (void *)CONFIG_SYS_NAND_U_BOOT_START;
> >  		uboot();
> > @@ -364,3 +367,7 @@ void hang(void)
> >  	/* Loop forever */
> >  	while (1) ;
> >  }
> > +#endif
> > +
> > +void nand_init(void) {}
> > +void nand_deselect(void) {}
> > diff --git a/include/configs/mx31pdk.h b/include/configs/mx31pdk.h
> > index 1754595..217552e 100644
> > --- a/include/configs/mx31pdk.h
> > +++ b/include/configs/mx31pdk.h
> > @@ -50,6 +50,7 @@
> >  #define CONFIG_SPL_LDSCRIPT	"arch/$(ARCH)/cpu/u-boot-spl.lds"
> >  #define CONFIG_SPL_MAX_SIZE	2048
> >  #define CONFIG_SPL_NAND_SUPPORT
> > +#define CONFIG_SPL_NAND_SUPPORT_LEGACY
> >  
> >  #define CONFIG_SPL_TEXT_BASE	0x87dc0000
> >  #define CONFIG_SYS_TEXT_BASE	0x87e00000
> > diff --git a/include/configs/tx25.h b/include/configs/tx25.h
> > index e72f8f6..7c362d0 100644
> > --- a/include/configs/tx25.h
> > +++ b/include/configs/tx25.h
> > @@ -37,6 +37,7 @@
> >  #define CONFIG_SPL_LDSCRIPT		"arch/$(ARCH)/cpu/u-boot-spl.lds"
> >  #define CONFIG_SPL_MAX_SIZE		2048
> >  #define CONFIG_SPL_NAND_SUPPORT
> > +#define CONFIG_SPL_NAND_SUPPORT_LEGACY
> >  
> >  #define CONFIG_SPL_TEXT_BASE		0x810c0000
> >  #define CONFIG_SYS_TEXT_BASE		0x81200000
> > --
> > 1.7.11.7
> 
> This is not about legacy vs. non-legacy. This is about basic vs. more
> featured
> SPL because of SPL size constraints. So what about dropping
> CONFIG_SPL_NAND_SUPPORT_LEGACY and testing for CONFIG_SPL_FRAMEWORK
> definition
> instead?

Also, I don't see any nand_init() (called by spl_nand_load_image()) for m53evk.

Best regards,
Beno?t