[PATCH v1] imx: imx8qm: enable relocation of fdt and initrd

[Oliver Graute <oliver.graute@gmail.com>]

On 05/02/20, Tom Rini wrote:
> On Wed, Feb 05, 2020 at 03:51:42PM +0000, Oliver Graute wrote:
> 
> > Remove 'fdt_high' and 'initrd_high' environment variables (set to 0xFFFFFFFF)
> > from default environment which prevents relocation of FDT and initrd.
> > 
> > Signed-off-by: Oliver Graute <oliver.graute@kococonnector.com>
> > Cc: Stefano Babic <sbabic@denx.de>
> > Cc: Fabio Estevam <festevam@gmail.com>
> > Cc: Peng Fan <peng.fan@nxp.com>
> > Cc: Simon Glass <sjg@chromium.org>
> > Cc: Ye Li <ye.li@nxp.com>
> > Cc: uboot-imx <uboot-imx@nxp.com>
> > ---
> >  include/configs/imx8qm_rom7720.h | 2 --
> >  1 file changed, 2 deletions(-)
> > 
> > diff --git a/include/configs/imx8qm_rom7720.h b/include/configs/imx8qm_rom7720.h
> > index 865863eb7c..8beb65e96b 100644
> > --- a/include/configs/imx8qm_rom7720.h
> > +++ b/include/configs/imx8qm_rom7720.h
> > @@ -63,11 +63,9 @@
> >  	"panel=NULL\0" \
> >  	"console=ttyLP0\0" \
> >  	"fdt_addr=0x83000000\0"			\
> > -	"fdt_high=0xffffffffffffffff\0"		\
> >  	"boot_fdt=try\0" \
> >  	"fdt_file=imx8qm-rom7720-a1.dtb\0" \
> >  	"initrd_addr=0x83800000\0"		\
> > -	"initrd_high=0xffffffffffffffff\0" \
> >  	"mmcdev="__stringify(CONFIG_SYS_MMC_ENV_DEV)"\0" \
> >  	"mmcpart=" __stringify(CONFIG_SYS_MMC_IMG_LOAD_PART) "\0" \
> >  	"mmcroot=" CONFIG_MMCROOT " rootwait rw\0" \
> 
> Is bootm_size or CONFIG_SYS_BOOTMAPSZ already being set somewhere for
> these platforms?  In Linux, Documentation/arm64/booting.rst does
> describe limitations on where FDT/initrd can reside in memory so we need
> to make sure they're obeyed.  That's best done by using bootm_size in
> environment or CONFIG_SYS_BOOTMAPSZ at build time to ensure alignment
> and non-overlap within those limits and not "don't move anything ever"
> as fdt_high/initrd_high=0xff... does.  Thanks!

No currently not. Because I do not know the exact value I have to set
for CONFIG_SYS_BOOTMAPSZ here. How do I find that out for my board?

Best Regards,

Oliver