[U-Boot] [PATCH 1/2] arm: Add Kconfig symbols used for Linux asm compatibility

[Tom Rini <trini@konsulko.com>]

On Fri, Jun 09, 2017 at 12:07:40AM +0000, Vikas MANOCHA wrote:

> Hi Albert/Tom,
> 
> > -----Original Message-----
> > From: Phil Edworthy [mailto:phil.edworthy at renesas.com]
> > Sent: Wednesday, May 31, 2017 11:33 PM
> > To: Albert Aribaud <albert.u.boot@aribaud.net>
> > Cc: Tom Rini <trini@konsulko.com>; Vikas MANOCHA <vikas.manocha@st.com>; Kamil Lulko <kamil.lulko@gmail.com>; u-
> > boot at lists.denx.de; Phil Edworthy <phil.edworthy@renesas.com>
> > Subject: [PATCH 1/2] arm: Add Kconfig symbols used for Linux asm compatibility
> > 
> > Rather than change asm files that come from Linux, add the symbols to Kconfig. Since one of the symbols is for thumb2 builds, make
> > CPU_V7M always select them.
> > 
> > Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
> > ---
> >  arch/arm/Kconfig      | 10 ++++++++++
> >  arch/arm/lib/Makefile |  2 --
> >  2 files changed, 10 insertions(+), 2 deletions(-)
> > 
> > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 2a3a36e..2793651 100644
> > --- a/arch/arm/Kconfigl
> > +++ b/arch/arm/Kconfig
> > @@ -19,6 +19,15 @@ config HAS_VBAR
> >  config HAS_THUMB2
> >  	bool
> > 
> > +# Used for compatibility with asm files copied from the kernel config
> > +ARM_ASM_UNIFIED
> > +	bool
> > +	default y
> 
> Is every arm arch (arm720, arm926 etc) assembly code written for unified ?
> Otherwise we might have run-time side effects.

I could be missing something, but this is only used by <asm/assembler.h>
and in turn only by arch/arm/lib/*.S, where we already had been defining
this.

-- 
Tom
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