[U-Boot] [PATCH 1/8] arm: v7: add read_mpidr function for arm32

[Matthias Brugger]

On 05/04/2019 10:30, Heiko Stuebner wrote:
> Function to get the contents of the mpidr register, similar to
> its arm64 counterpart.
> 
> Signed-off-by: Heiko Stuebner <heiko at sntech.de>

Reviewed-by: Matthias Brugger <mbrugger at suse.com>

> ---
>  arch/arm/include/asm/system.h | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
> index aed2e3c51e..b5332f4347 100644
> --- a/arch/arm/include/asm/system.h
> +++ b/arch/arm/include/asm/system.h
> @@ -364,6 +364,15 @@ static inline int is_hyp(void)
>  #endif
>  }
>  
> +static inline unsigned long read_mpidr(void)
> +{
> +	unsigned long val;
> +
> +	asm volatile ("mrc p15, 0, %0, c0, c0, 5" : "=r" (val));
> +
> +	return val;
> +}
> +
>  static inline unsigned int get_cr(void)
>  {
>  	unsigned int val;
>