[U-Boot] [PATCH V3 5/6] omap3_beagle: support findfdt and loadfdt for devicetree support
Nishanth Menon
nm at ti.com
Mon Jul 15 14:25:02 CEST 2013
On 14:16-20130715, Koen Kooi wrote:
>
> Op 15 jul. 2013, om 14:11 heeft Nishanth Menon <nm at ti.com> het volgende geschreven:
>
> > For folks not using concatenated device tree with uImage, having
> > an handy function to find and load device tree is very handy.
> >
> > So introduce findfdt and loadfdt and run findfdt by default to make
> > it easier on user scripts.
> >
> > Signed-off-by: Nishanth Menon <nm at ti.com>
> > ---
> > V3: Fixes typo mistake reported in http://marc.info/?t=137358212300006&r=1&w=2
> >
> > include/configs/omap3_beagle.h | 15 +++++++++++++++
> > 1 file changed, 15 insertions(+)
> >
> > diff --git a/include/configs/omap3_beagle.h b/include/configs/omap3_beagle.h
> > index bdeee17..5ec8ade 100644
> > --- a/include/configs/omap3_beagle.h
> > +++ b/include/configs/omap3_beagle.h
> > @@ -210,6 +210,8 @@
> > #define CONFIG_EXTRA_ENV_SETTINGS \
> > "loadaddr=0x80200000\0" \
> > "rdaddr=0x81000000\0" \
> > + "fdt_high=0xffffffff\0" \
> > + "fdtaddr=0x80f80000\0" \
> > "usbtty=cdc_acm\0" \
> > "bootfile=uImage\0" \
> > "ramdisk=ramdisk.gz\0" \
> > @@ -250,6 +252,17 @@
> > "omapdss.def_disp=${defaultdisplay} " \
> > "root=${nandroot} " \
> > "rootfstype=${nandrootfstype}\0" \
> > + "findfdt=" \
> > + "if test $beaglerev = AxBx; then " \
> > + "setenv fdtfile omap3-beagle.dtb; fi; " \
> > + "if test $beaglerev = Cx; then " \
> > + "setenv fdtfile omap3-beagle.dtb; fi; " \
> > + "if test $beaglerev = xMAB; then " \
> > + "setenv fdtfile omap3-beagle-xm.dtb; fi; " \
> > + "if test $beaglerev = xMC; then " \
> > + "setenv fdtfile omap3-beagle-xm.dtb; fi; " \
> > + "if test $fdtfile = undefined; then " \
> > + "echo WARNING: Could not determine device tree to use; fi; \0" \
>
> With the remote chance of a future xM rev D, can you make the fallthrough be 'omap3-beagle-xm.dtb' intead of 'undefined'?
Lets add the detection of xMD and along with that we add
omap3-beagle-xm.dtb detection - makes sense? OR do we assume all
un-matched devices default to beagle xMD? what if there was a vanilla
beagle rev D?
--
Regards,
Nishanth Menon
More information about the U-Boot
mailing list