[U-Boot] [PATCH v4 10/11] Add u-boot-pad.bin target to the Makefile

Thu Sep 20 18:32:38 CEST 2012

Tom,

> -----Original Message-----
> From: Tom Rini [mailto:trini at ti.com]
> Sent: Thursday, September 20, 2012 9:23 AM
> To: Tom Warren
> Cc: José Miguel Gonçalves; Scott Wood; u-boot at lists.denx.de; marex at denx.de;
> mk7.kang at samsung.com
> Subject: Re: [PATCH v4 10/11] Add u-boot-pad.bin target to the Makefile
> 
> * PGP Signed by an unknown key
> 
> On 09/20/12 09:01, Tom Warren wrote:
> >> -----Original Message----- From: Tom Rini [mailto:trini at ti.com]
> >> Sent: Wednesday, September 19, 2012 6:29 PM To: José Miguel Gonçalves
> >> Cc: Scott Wood; u-boot at lists.denx.de; marex at denx.de;
> >> mk7.kang at samsung.com; Tom Warren Subject: Re: [PATCH v4 10/11] Add
> >> u-boot-pad.bin target to the Makefile
> >>
> >> > Old Signed by an unknown key
> >>
> >> On 09/19/12 17:38, José Miguel Gonçalves wrote:
> >>> Tom & Scott,
> >>>
> >>> On 09/20/2012 12:40 AM, Tom Rini wrote:
> >>>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
> >>>>
> >>>> On 09/19/12 16:36, Scott Wood wrote:
> >>>>> On 09/19/2012 06:31:29 PM, Tom Rini wrote:
> >>>>>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
> >>>>>>
> >>>>>> On 09/19/12 15:39, Scott Wood wrote:
> >>>>>>> On 09/19/2012 06:25:26 AM, José Miguel Gonçalves
> >>>>>>> wrote:
> >>>>>>>> Samsung's S3C24XX SoCs need this in order to generate a binary
> >>>>>>>> image with a padded SPL concatenated with U-Boot.
> >>>>>>>>
> >>>>>>>> Signed-off-by: José Miguel Gonçalves <jose.goncalves at inov.pt>
> >>>>>>>> --- Changes for v2: - None
> >>>>>>>>
> >>>>>>>> Changes for v3: - Changed new binary target name from
> >>>>>>>> u-boot-ubl.bin to u-boot-pad.bin
> >>>>>>>>
> >>>>>>>> Changes for v4: - None --- Makefile |   11
> >>>>>>>> ++++++----- 1 file changed, 6 insertions(+), 5
> >>>>>>>> deletions(-)
> >>>>>>>>
> >>>>>>>> diff --git a/Makefile b/Makefile index 8738d55..86dedca 100644
> >>>>>>>> --- a/Makefile +++ b/Makefile @@ -433,14 +433,15 @@
> >>>>>>>> $(obj)u-boot.sha1:
> >>>>>>>> $(obj)u-boot.bin $(obj)u-boot.dis: $(obj)u-boot
> >>>>>>>> $(OBJDUMP) -d $< > $@
> >>>>>>>>
> >>>>>>>> -$(obj)u-boot.ubl:       $(obj)spl/u-boot-spl.bin
> >>>>>>>> $(obj)u-boot.bin +$(obj)u-boot-pad.bin:
> >>>>>>>> $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin $(OBJCOPY)
> >>>>>>>> ${OBJCFLAGS} --pad-to=$(PAD_TO) -O binary $(obj)spl/u-boot-spl
> >>>>>>>> $(obj)spl/u-boot-spl-pad.bin - cat $(obj)spl/u-boot-spl-pad.bin
> >>>>>>>> $(obj)u-boot.bin >
> >>>>>>>> $(obj)u-boot-ubl.bin -        $(obj)tools/mkimage -n
> >>>>>>>>  $(UBL_CONFIG) -T ublimage \ -        -e
> >>>>>>>> $(CONFIG_SYS_TEXT_BASE) -d $(obj)u-boot-ubl.bin
> >>>>>>>> $(obj)u-boot.ubl -        rm $(obj)u-boot-ubl.bin +
> >>>>>>>> cat $(obj)spl/u-boot-spl-pad.bin $(obj)u-boot.bin >
> >>>>>>>> $(obj)u-boot-pad.bin rm $(obj)spl/u-boot-spl-pad.bin
> >>>>>>> This rule lists u-boot-spl.bin as a prerequisite, but it doesn't
> >>>>>>> appear to use it -- it uses u-boot-spl instead.
> >>>>>>>
> >>>>>>> It seems that either spl/Makefile should produce u-boot-spl
> >>>>>>> rather than u-boot-spl.bin and let the toplevel Makefile deal
> >>>>>>> with converting it to a binary, or spl/Makefile should take care
> >>>>>>> of adding any needed padding for the target and the final rule
> >>>>>>> should just be a concatenation.
> >>>>>> So, if we use a weak PAD_TO value of say 0x1, we could always
> >>>>>> "pad" u-boot-spl.bin out and then do the concatenation here and
> >>>>>> in a few other targets as well.
> >>>>> Yes, or use a variable that includes the linker option, so that it
> >>>>> expands to an empty string if padding isn't required.
> >>>> Yes, I don't know if say IMAGE_PAD ?= "" and having boards set that
> >>>> to - --pad-to=... or just saying
> >>>> --pad-to=$(PAD_SIZE) and PAD_SIZE ?= 0x1 ends up looking cleaner
> >>>> once all is said and done.  First one to try both and patch... :)
> >>>>
> >>>
> >>> Please check the following patch. It seems to work for me...
> >>>
> >>> diff --git a/Makefile b/Makefile index 8738d55..fad8b33 100644
> >>> --- a/Makefile +++ b/Makefile @@ -433,13 +433,12 @@
> >>> $(obj)u-boot.sha1: $(obj)u-boot.bin $(obj)u-boot.dis:
> >>> $(obj)u-boot $(OBJDUMP) -d $<
> >>>> $@
> >>>
> >>> -$(obj)u-boot.ubl:       $(obj)spl/u-boot-spl.bin
> >>> $(obj)u-boot.bin -        $(OBJCOPY) ${OBJCFLAGS}
> >>> --pad-to=$(PAD_TO) -O binary $(obj)spl/u-boot-spl
> >>> $(obj)spl/u-boot-spl-pad.bin -        cat
> >>> $(obj)spl/u-boot-spl-pad.bin $(obj)u-boot.bin > $(obj)u-boot-ubl.bin
> >>> +$(obj)u-boot-with-spl.bin:
> >>> $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin +        cat $^ > $@
> >>> + +$(obj)u-boot.ubl:       $(obj)u-boot-with-spl.bin
> >>> $(obj)tools/mkimage -n $(UBL_CONFIG) -T ublimage \ -        -e
> >>>  $(CONFIG_SYS_TEXT_BASE) -d $(obj)u-boot-ubl.bin
> >>> $(obj)u-boot.ubl - rm $(obj)u-boot-ubl.bin -        rm
> >>> $(obj)spl/u-boot-spl-pad.bin + -e $(CONFIG_SYS_TEXT_BASE) -d $< $@
> >>>
> >>> $(obj)u-boot.ais:       $(obj)spl/u-boot-spl.bin
> >>> $(obj)u-boot.img $(obj)tools/mkimage -s -n /dev/null -T aisimage \
> >>> diff --git a/spl/Makefile b/spl/Makefile index
> >>> f96c08e..6ea9f26 100644 --- a/spl/Makefile +++ b/spl/Makefile @@
> >>> -23,6 +23,8 @@ include $(TOPDIR)/config.mk # We want the final
> >>> binaries in this directory obj := $(OBJTREE)/spl/
> >>>
> >>> +PAD_TO ?= 1 + HAVE_VENDOR_COMMON_LIB := $(shell [ -f
> >>> $(SRCTREE)/board/$(VENDOR)/common/Makefile ] \ && echo y || echo n)
> >>>
> >>> @@ -124,7 +126,7 @@ $(obj)$(BOARD)-spl.bin:
> >>> $(obj)u-boot-spl.bin endif
> >>>
> >>> $(obj)u-boot-spl.bin:    $(obj)u-boot-spl -    $(OBJCOPY)
> >>> $(OBJCFLAGS) -O binary $< $@ +    $(OBJCOPY) ${OBJCFLAGS}
> >>> --pad-to=$(PAD_TO) -O binary $< $@
> >>>
> >>> GEN_UBOOT = \ UNDEF_SYM=`$(OBJDUMP) -x $(LIBS) | \
> >>
> >> Tom W, since I'd like you to upgrade the tegra rules after this
> >> change goes in (since they do a u-boot-spl.bin + pad + u-boot.bin +
> >> stuff), does this look good to you as well?
> >> Thanks!
> >
> > I'm not clear what you want the final binary names to be. I seem to be
> > missing segments of this discussion - maybe not CC'd on all threads?
> 
> Sorry, I'm just asking if this way of padding u-boot-spl.bin to the required
> size by default in spl/Makefile and then not doing any --pad-to in the
> toplevel Makefile rules for u-boot-spl will work for your needs as well (so
> update the existing rules to just concatenate spl/u-boot-spl.bin and u-
> boot.bin and whatever else you need and have PAD_TO be set to
> $(CONFIG_SYS_TEXT_BASE), I believe).

That may work, but let's have Allen comment, since he did all the SPL work. If there's a proposed patch, I can take it and test it.

Tom
> 
> --
> Tom
> 
> * Unknown Key
> * 0x94391D56(L)
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