Re: [Xen-devel] [PATCH v3 4/8] xen/arm: Add support for DTBs with strange names of Hip04 GICv2

[Zoltan Kiss <zoltan.kiss@xxxxxxxxxx>]

On 05/11/14 14:52, Stefano Stabellini wrote:
> On Wed, 5 Nov 2014, Julien Grall wrote:
> > Hi Frediano,
> >
> > On 11/05/2014 09:41 AM, Frediano Ziglio wrote:
> > > This name can appear in some Linux kernel repos. Not very fortunate,
> > > but to avoid others spending an hour to spot that few characters
> > > difference it worth to work around it.
> > Linux upstream is using "hisilicon,hip04-intc" to detect the hisilicon
> > interrupt controller. So it's not a workaround.
> >
> > Which kernel is using the "*,hip04-gic"?
> Good question, but what really matters is the string that u-boot (or any
> other firmware/bootloader) is going to use, right? So, which one is it?
We are using the DTB from the kernel source, even when loading a bare 
metal kernel. I've looked around, the *gic version seems to exist only 
in internal repos, as far as I can see. Including the one Frediano 
started to use for porting. Therefore, I don't insist to keep both, but 
as I mentioned in the commit message, it would still provide some 
benefit, and given that it's just a 3 line change which just extend a 
few listings, I think we should keep it.
Of course with a different commit message, which clears that this is the 
official name of it.
Zoli

> > > Signed-off-by: Zoltan Kiss <zoltan.kiss@xxxxxxxxxx>
> > > ---
> > >   xen/arch/arm/gic-v2.c     | 1 +
> > >   xen/include/asm-arm/gic.h | 4 +++-
> > >   2 files changed, 4 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/xen/arch/arm/gic-v2.c b/xen/arch/arm/gic-v2.c
> > > index 3cb59dd..9ab30ce 100644
> > > --- a/xen/arch/arm/gic-v2.c
> > > +++ b/xen/arch/arm/gic-v2.c
> > > @@ -823,6 +823,7 @@ DT_DEVICE_END
> > >   static const char * const hip04_gicv2_dt_compat[] __initconst =
> > >   {
> > >       DT_COMPAT_GIC_HIP04,
> > > +    DT_COMPAT_GIC_HIP04_2,
> > >       NULL
> > >   };
> > >
> > > diff --git a/xen/include/asm-arm/gic.h b/xen/include/asm-arm/gic.h
> > > index 5adb628..3d2b3db 100644
> > > --- a/xen/include/asm-arm/gic.h
> > > +++ b/xen/include/asm-arm/gic.h
> > > @@ -156,11 +156,13 @@
> > >   #define DT_COMPAT_GIC_CORTEX_A15     "arm,cortex-a15-gic"
> > >   #define DT_COMPAT_GIC_CORTEX_A7      "arm,cortex-a7-gic"
> > >   #define DT_COMPAT_GIC_HIP04          "hisilicon,hip04-gic"
> > > +#define DT_COMPAT_GIC_HIP04_2        "hisilicon,hip04-intc"
> > >
> > >   #define DT_MATCH_GIC_V2 DT_MATCH_COMPATIBLE(DT_COMPAT_GIC_CORTEX_A15), \
> > >                           DT_MATCH_COMPATIBLE(DT_COMPAT_GIC_CORTEX_A7), \
> > >                           DT_MATCH_COMPATIBLE(DT_COMPAT_GIC_400), \
> > > -                        DT_MATCH_COMPATIBLE(DT_COMPAT_GIC_HIP04)
> > > +                        DT_MATCH_COMPATIBLE(DT_COMPAT_GIC_HIP04), \
> > > +                        DT_MATCH_COMPATIBLE(DT_COMPAT_GIC_HIP04_2)
> > >
> > >   #define DT_COMPAT_GIC_V3             "arm,gic-v3"
> >
> > --
> > Julien Grall
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