[U-Boot] [PATCH v2 1/2] Makefile: Add target to generate hex output for combined spl and dtb

[Dalon L Westergreen <dalon.westergreen@linux.intel.com>]

On Tue, 2019-06-04 at 02:00 +0200, Marek Vasut wrote:
> On 6/4/19 1:57 AM, Dalon Westergreen wrote:
> > From: Dalon Westergreen <
> > dalon.westergreen at intel.com
> > >
> > 
> > Some architectures, Stratix10, require a hex formatted spl that combines
> > the spl image and dtb.  This adds a target to create said hex file with
> > and offset of SPL_TEXT_BASE.
> > 
> > Signed-off-by: Dalon Westergreen <
> > dalon.westergreen at intel.com
> > >
> > 
> 
> [...]
> 
> > @@ -363,6 +365,11 @@ endif
> >  $(obj)/$(SPL_BIN).sfp: $(obj)/$(SPL_BIN).bin FORCE
> >  	$(call if_changed,mkimage)
> >  
> > +OBJCOPYFLAGS_$(SPL_BIN).hex := -I binary -O ihex --change-
> > address=$(CONFIG_SPL_TEXT_BASE)
> 
> Do we really need to do it here ? The commit message is not clear why
> this is needed ; I think if you link the SPl against the correct
> address, this should not be needed.
> 

This objcopy is from the binary including the dtb and not the elf.  If you
objcopy using the elf, and link to the correct address, you are correct.  It
is not true when just taking a binary and converting to a hex file.  The
binary combined with the dtb is what is needed.

I can try be more descriptive in the commit message.

perhaps..

---
Stratix10 requires a hex image of the spl plus spl devicetree offset to 
the Stratix10 onchip memory located at SPL_TEXT_BASE.  This patch adds
a target to generate a hex file from the u-boot-spl binary including the
dtb offset at SPL_TEST_BASE.
---

> > +$(obj)/$(SPL_BIN).hex: $(obj)/u-boot-spl.bin FORCE
> > +	$(call if_changed,objcopy)
> > +
> >  quiet_cmd_mksunxiboot = MKSUNXI $@
> >  cmd_mksunxiboot = $(objtree)/tools/mksunxiboot \
> >  			--default-dt $(CONFIG_DEFAULT_DEVICE_TREE) $< $@
> > @@ -463,3 +470,4 @@ ifdef CONFIG_ARCH_K3
> >  tispl.bin: $(obj)/u-boot-spl-nodtb.bin $(SHRUNK_ARCH_DTB) $(SPL_ITS) FORCE
> >  	$(call if_changed,mkfitimage)
> >  endif
> > +
> 
> Drop this hunk

Will do, and i likely should have used (SPL_BIN).bin rather than
u-boot-spl.bin.

--dalon
> 
>