[U-Boot] [PATCH v2 4/7] x86: Allow cpu-x86 driver to be probed for UP

Bin Meng bmeng.cn at gmail.com
Tue Jul 21 17:37:05 CEST 2015


On Tue, Jul 21, 2015 at 8:15 PM, Bin Meng <bmeng.cn at gmail.com> wrote:
> Currently cpu-x86 driver is probed only for SMP. We add the same
> support for UP when there is only one cpu node in the deive tree.
>
> Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
>
> ---
>
> Changes in v2:
> - New patch to allow cpu-x86 driver to be probed for UP
>
>  arch/x86/cpu/cpu.c | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c
> index b4e0fd9..1c69a18 100644
> --- a/arch/x86/cpu/cpu.c
> +++ b/arch/x86/cpu/cpu.c
> @@ -35,6 +35,7 @@
>  #include <asm/processor-flags.h>
>  #include <asm/interrupt.h>
>  #include <asm/tables.h>
> +#include <dm/device-internal.h>
>  #include <linux/compiler.h>
>
>  DECLARE_GLOBAL_DATA_PTR;
> @@ -696,6 +697,12 @@ __weak int x86_init_cpus(void)
>  #ifdef CONFIG_SMP
>         debug("Init additional CPUs\n");
>         x86_mp_init();
> +#else
> +       struct udevice *dev = NULL;
> +
> +       uclass_first_device(UCLASS_CPU, &dev);
> +       if (dev)
> +               device_probe(dev);

Looks that the call to device_probe() is not necessary.

>  #endif
>
>         return 0;
> --

Regards,
Bin


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