[U-Boot] [PATCH 2/2] SPL: Allow ARM926EJS to avoid compiling in the CPU support code

[Marek Vasut <marek.vasut@gmail.com>]

On Saturday, October 22, 2011 12:44:06 AM Albert ARIBAUD wrote:
> Le 22/10/2011 00:00, Marek Vasut a ?crit :
> > On Friday, October 21, 2011 11:52:23 PM Albert ARIBAUD wrote:
> >> Hi Marek,
> >> 
> >> Le 21/10/2011 22:44, Marek Vasut a ?crit :
> >>> On Thursday, October 06, 2011 02:13:26 AM Marek Vasut wrote:
> >>>> This allows the SPL to avoid compiling in the CPU support code.
> >>>> 
> >>>> Signed-off-by: Marek Vasut<marek.vasut@gmail.com>
> >>>> Cc: Stefano Babic<sbabic@denx.de>
> >>>> Cc: Wolfgang Denk<wd@denx.de>
> >>>> Cc: Detlev Zundel<dzu@denx.de>
> >>>> Cc: Scott Wood<scottwood@freescale.com>
> >>>> ---
> >>>> 
> >>>>    arch/arm/cpu/arm926ejs/Makefile |    7 +++++++
> >>>>    1 files changed, 7 insertions(+), 0 deletions(-)
> >>>> 
> >>>> diff --git a/arch/arm/cpu/arm926ejs/Makefile
> >>>> b/arch/arm/cpu/arm926ejs/Makefile index 930e0d1..3f9b0f1 100644
> >>>> --- a/arch/arm/cpu/arm926ejs/Makefile
> >>>> +++ b/arch/arm/cpu/arm926ejs/Makefile
> >>>> @@ -28,6 +28,13 @@ LIB	= $(obj)lib$(CPU).o
> >>>> 
> >>>>    START	= start.o
> >>>>    COBJS	= cpu.o
> >>>> 
> >>>> +ifdef	CONFIG_SPL_BUILD
> >>>> +ifdef	CONFIG_SPL_NO_CPU_SUPPORT_CODE
> >>>> +START	:=
> >>>> +COBJS	:=
> >>>> +endif
> >>>> +endif
> >>>> +
> >>>> 
> >>>>    SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
> >>>>    OBJS	:= $(addprefix $(obj),$(COBJS) $(SOBJS))
> >>>>    START	:= $(addprefix $(obj),$(START))
> >>> 
> >>> Hi Albert,
> >>> 
> >>> can we get this applied please?
> >> 
> >> I still don't understand what this is supposed to do -- why not linking
> >> this code is required.
> >> 
> >> Amicalement,
> > 
> > Hi Albert,
> > 
> > I use very different start.S in SPL. And I don't need cpu.o at all.
> 
> That I understand; but is there a /problem/ in linking cpu.o in?

I suppose it'll be optimized out at link time ?

Cheers