Re: [edk2-devel] [PATCH v1 0/4] Adjust the QemuFwCfgLibMmio and add PEI stage

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

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Hi Gerd and Ard,

Can I submit the V2 this week? I want all OvmfPkg changes to be meged 
before the 202405 feature freeze.


Thanks,
Chao
On 2024/4/22 17:21, Chao Li wrote:
>
> Hi Ard,
>
> Could you take a look at this patch set and give you some suggestions?
>
> On 2024/4/17 18:01, Chao Li wrote:
>>
>> Hi Gerd,
>>
>> On 2024/4/17 17:35, Gerd Hoffmann wrote:
>>> On Wed, Apr 17, 2024 at 04:12:56PM +0800, Chao Li wrote:
>>>> Patch1: Added three PCDs for QemuFwCfgLibMmio
>>>> Patch2: Sparate QemuFwCfgLibMmio.c into two files and default as DXE
>>>> stage library.
>>>> Patch3: Added QemuFwCfgMmiLib PEI version
>>>> Patch4: Rename QemuFwCfgLibMmio.inf to QemuFwCfgMmioDxeLib.inf and
>>>> enable it in AARCH64 and RISCV64.
>>> Ok, I see, you are using the PCDs because global variables don't work
>>> in PEI.
>> Yes. :)
>>> Alternative approach would be to create a HOB for that (see
>>> EFI_HOB_PLATFORM_INFO used by X64).  Not sure this is a good idea
>>> though given that we have three different architectures using that code.
>>> Ard, any advise?
>> I think HOB might be heavy, and the dynamically PCD is also uses the 
>> HOB, so this I think this way is more simpler. I'm also looking 
>> forward Ard's suggestions. :)
>>>>    OvmfPkg: Add three PCDs for QemuFwCfgLib
>>>>    OvmfPkg: Separate QemuFwCfgLibMmio.c into two files
>>> This patch should be splitted into two, one doing the code split without
>>> functional change, and one which switches from global variables to PCDs
>>> (or HOB).
>> OK, I will split it in V2.
>>> Otherwise this looks good to me (and I'd suggest to keep and merge this
>>> as separate patch series).
>> Sure!
>>> take care,
>>>    Gerd
>>>
>>>
>>>
>>>
>>>
> 


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