Re: [edk2-devel] [PATCH v1 18/26] OvmfPkg/LoongArchVirt: Add the early serial port output library

["Chao Li" <lichao@loongson.cn>]

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Hi Gerd,


Thanks,
Chao
On 2024/3/15 17:36, Gerd Hoffmann wrote:
> On Mon, Mar 11, 2024 at 05:39:08PM +0800, Chao Li wrote:
>> Add a early serial port output library into LoongArchVirt that named
>> EarlyFdtSerialPortLib16550, this library is referenced from
>> MdeModulePkg.
> Why create your own copy?  What are the differences to
> MdeModulePkg/Library/BaseSerialPortLib16550?
This library is used in the PEI stage, same as the Hook Library, 
LoongArch QEMU is runs on flash in PEI stage, MdeModule version does not 
support to get the SerialRegisterBase via registers or HOB or FDT, I 
thought if we adjust the MdeModule version is a big project, so I copied 
the MdeModule version, and added a way to get SerialRegisterBase via FDT.
>
> take care,
>    Gerd
>
>
>
> 
>


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