[edk2-devel] [edk2-platforms] Platform/Loongson: Fixed multi-core boot issue

[xianglai]

Ping for reviewing, Any comments is welcome.

On 3/31/23 10:30 AM, xianglai wrote:
> Fixed the bug of slave cpu querying MAILBUF register address.
>
> Cc: Ard Biesheuvel <ardb+tianocore at kernel.org>
> Cc: Bibo Mao <maobibo at loongson.cn>
> Cc: Chao Li <lichao at loongson.cn>
> Cc: Leif Lindholm <quic_llindhol at quicinc.com>
> Cc: Liming Gao <gaoliming at byosoft.com.cn>
> Cc: Michael D Kinney <michael.d.kinney at intel.com>
> Signed-off-by: xianglai li <lixianglai at loongson.cn>
> ---
>   Platform/Loongson/LoongArchQemuPkg/Sec/LoongArch64/Start.S | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/Platform/Loongson/LoongArchQemuPkg/Sec/LoongArch64/Start.S b/Platform/Loongson/LoongArchQemuPkg/Sec/LoongArch64/Start.S
> index 5d7ce313c0..8fb1b416f6 100644
> --- a/Platform/Loongson/LoongArchQemuPkg/Sec/LoongArch64/Start.S
> +++ b/Platform/Loongson/LoongArchQemuPkg/Sec/LoongArch64/Start.S
> @@ -56,6 +56,8 @@ slave_main:
>       li.d      T1, LOONGSON_IOCSR_IPI_EN
>       iocsrwr.w T0, T1
>   
> +    li.d      T1, LOONGSON_CSR_MAIL_BUF0
> +
>   1:
>       # wait for wakeup
>       idle 0



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