[U-Boot] [PATCH 08/10] x86: qemu: Add MP initialization

Simon Glass sjg at chromium.org
Sat Jul 18 16:37:42 CEST 2015


Hi Bin,

On 15 July 2015 at 02:23, Bin Meng <bmeng.cn at gmail.com> wrote:
> The existing MP initialization process works on QEMU multicore,
> except that we need increase delay time for BSP to wait APs to
> show up online. Use a Kconfig option to control the delay time
> factor to the normal one.
>
> Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
> ---
>
>  arch/x86/cpu/mp_init.c           |  4 ++++
>  arch/x86/cpu/qemu/Kconfig        | 11 +++++++++++
>  arch/x86/dts/qemu-x86_i440fx.dts | 20 ++++++++++++++++++++
>  arch/x86/dts/qemu-x86_q35.dts    | 20 ++++++++++++++++++++
>  configs/qemu-x86_defconfig       |  4 ++++
>  doc/README.x86                   |  5 +++++
>  6 files changed, 64 insertions(+)

Why does qemu need a longer delay? Can we put this in as a property of
the /cpus node instead?

Regards,
Simon


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