Re: [Xen-devel] [PATCH] xen/arm: midway: implement SMP

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Mon, 18 Nov 2013, Julien Grall wrote:
> Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx>

Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>


>  xen/arch/arm/platforms/midway.c | 22 ++++++++++++++++++++++
>  1 file changed, 22 insertions(+)
> 
> diff --git a/xen/arch/arm/platforms/midway.c b/xen/arch/arm/platforms/midway.c
> index 399056b..3b9fcfc 100644
> --- a/xen/arch/arm/platforms/midway.c
> +++ b/xen/arch/arm/platforms/midway.c
> @@ -47,6 +47,27 @@ static uint32_t midway_quirks(void)
>      return PLATFORM_QUIRK_DOM0_MAPPING_11;
>  }
>  
> +static int __init midway_cpu_up(int cpu)
> +{
> +    void __iomem *pens;
> +
> +    pens = ioremap_nocache(0, PAGE_SIZE);
> +    if ( !pens )
> +    {
> +        dprintk(XENLOG_ERR, "Unable to map midway pens MMIO\n");
> +        return -EFAULT;
> +    }
> +
> +    printk("Set cpu pen %u to %"PRIpaddr" (%p)\n",
> +           cpu, __pa(init_secondary), init_secondary);
> +
> +    writel(__pa(init_secondary), pens + 0x40 + cpu * 0x10);
> +
> +    iounmap(pens);
> +
> +    return 0;
> +}
> +
>  static const char * const midway_dt_compat[] __initconst =
>  {
>      "calxeda,ecx-2000",
> @@ -57,6 +78,7 @@ PLATFORM_START(midway, "CALXEDA MIDWAY")
>      .compatible = midway_dt_compat,
>      .reset = midway_reset,
>      .quirks = midway_quirks,
> +    .cpu_up = midway_cpu_up,
>  PLATFORM_END
>  
>  /*
> -- 
> 1.8.3.1
> 

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