[U-Boot] [PATCH 1/6][v3] armv8: lsch3: Add generic get_svr() in assembly

[Priyanka Jain]

> -----Original Message-----
> From: york sun
> Sent: Monday, November 14, 2016 10:20 PM
> To: Priyanka Jain <priyanka.jain at nxp.com>; u-boot at lists.denx.de
> Subject: Re: [PATCH 1/6][v3] armv8: lsch3: Add generic get_svr() in assembly
> 
> On 11/03/2016 04:12 AM, Priyanka Jain wrote:
> > Signed-off-by: Priyanka Jain <priyanka.jain at nxp.com>
> > ---
> >  arch/arm/cpu/armv8/fsl-layerscape/cpu.c            |    7 -------
> >  arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S       |    9 +++++++++
> >  .../include/asm/arch-fsl-layerscape/immap_lsch3.h  |    6 +++---
> >  3 files changed, 12 insertions(+), 10 deletions(-)
> >
> > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
> > b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
> > index b7a2e0c..2863e18 100644
> > --- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
> > +++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
> > @@ -305,13 +305,6 @@ u32 fsl_qoriq_core_to_type(unsigned int core)
> >  	return -1;      /* cannot identify the cluster */
> >  }
> >
> > -uint get_svr(void)
> > -{
> > -	struct ccsr_gur __iomem *gur = (void
> *)(CONFIG_SYS_FSL_GUTS_ADDR);
> > -
> > -	return gur_in32(&gur->svr);
> > -}
> > -
> >  #ifdef CONFIG_DISPLAY_CPUINFO
> >  int print_cpuinfo(void)
> >  {
> > diff --git a/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S
> > b/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S
> > index 5d0b7a4..ee20c27 100644
> > --- a/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S
> > +++ b/arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S
> > @@ -13,6 +13,9 @@
> >  #ifdef CONFIG_MP
> >  #include <asm/arch/mp.h>
> >  #endif
> > +#ifdef CONFIG_FSL_LSCH3
> > +#include <asm/arch-fsl-layerscape/immap_lsch3.h>
> > +#endif
> >
> >  ENTRY(lowlevel_init)
> >  	mov	x29, lr			/* Save LR */
> > @@ -199,6 +202,12 @@ ENTRY(lowlevel_init)
> >  ENDPROC(lowlevel_init)
> >
> >  #ifdef CONFIG_FSL_LSCH3
> > +	.globl get_svr
> > +get_svr:
> > +	ldr	x1, =FSL_LSCH3_SVR
> > +	ldr	w0, [x1]
> > +	ret
> > +
> 
> This has an issue with non_lsch3 SoCs. You will see compiling error on them,
> for example ls1012afrdm_qspi.
> 
> York

I will check this for ls1012a devices and send updated patch (if required)

Priyanka