Re: [edk2-devel] [PATCH v1 0/2] Support MM based variable services in PEI for ARM

["Kun Qin" <kuqin12@gmail.com>]

Thanks a lot, Sami!

On 6/22/2023 12:06 AM, Sami Mujawar wrote:
> Hi Kun,
>
> Apologies for the delay in reviewing.
> I will take a look at this series shortly and get back.
>
> Regards,
>
> Sami Mujawar
>
> On 22/06/2023, 06:07, "Kun Qin" <kuqin12@gmail.com <mailto:kuqin12@gmail.com>> wrote:
>
>
> Hi Arm and MdeModule package maintainers,
>
>
> This patch series has been sent out for almost 2 weeks without any reviews.
>
>
> Could you please provide feedback on the change when you have a chance?
> Any input is appreciated.
>
>
> Regards,
> Kun
>
>
> On 6/8/2023 1:44 PM, Kun Qin via groups.io wrote:
>> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4464 <https://bugzilla.tianocore.org/show_bug.cgi?id=4464>
>>
>> As of today, there has been a void in the variable service in PEI phase
>> on ARM systems that support PEI phase and standalone MM hosted variable
>> service.
>>
>> This change adds the support through:
>> 1. Add MM communication services in PEI phase for ARM platforms. This
>> module is based on SMC calls to standalone MM environments, similar to
>> "ArmPkg/Drivers/MmCommunicationDxe".
>>
>> 2. A service module that installs `gEfiPeiReadOnlyVariable2PpiGuid` based
>> on step 1. Note that this driver will not have special dependency on ARM
>> specific code, thus will be ideally added to MdeModulePkg.
>>
>> Patch v1 branch: https://github.com/kuqin12/edk2/tree/arm_var_pei_v1 <https://github.com/kuqin12/edk2/tree/arm_var_pei_v1>
>>
>> Cc: Hao A Wu <hao.a.wu@intel.com <mailto:hao.a.wu@intel.com>>
>> Cc: Liming Gao <gaoliming@byosoft.com.cn <mailto:gaoliming@byosoft.com.cn>>
>> Cc: Jian J Wang <jian.j.wang@intel.com <mailto:jian.j.wang@intel.com>>
>> Cc: Leif Lindholm <quic_llindhol@quicinc.com <mailto:quic_llindhol@quicinc.com>>
>> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org <mailto:ardb+tianocore@kernel.org>>
>> Cc: Sami Mujawar <sami.mujawar@arm.com <mailto:sami.mujawar@arm.com>>
>>
>> Kun Qin (2):
>> ArmPkg: MmCommunicationPei: Introduce MM communicate in PEI
>> MdeModulePkg: Variable: Introduce MM based variable read service in
>> PEI
>>
>> ArmPkg/Drivers/MmCommunicationPei/MmCommunicationPei.c | 178 +++++++++
>> MdeModulePkg/Universal/Variable/MmVariablePei/MmVariablePei.c | 381 ++++++++++++++++++++
>> ArmPkg/ArmPkg.dsc | 2 +
>> ArmPkg/Drivers/MmCommunicationPei/MmCommunicationPei.h | 76 ++++
>> ArmPkg/Drivers/MmCommunicationPei/MmCommunicationPei.inf | 41 +++
>> MdeModulePkg/MdeModulePkg.dsc | 1 +
>> MdeModulePkg/Universal/Variable/MmVariablePei/MmVariablePei.h | 134 +++++++
>> MdeModulePkg/Universal/Variable/MmVariablePei/MmVariablePei.inf | 43 +++
>> 8 files changed, 856 insertions(+)
>> create mode 100644 ArmPkg/Drivers/MmCommunicationPei/MmCommunicationPei.c
>> create mode 100644 MdeModulePkg/Universal/Variable/MmVariablePei/MmVariablePei.c
>> create mode 100644 ArmPkg/Drivers/MmCommunicationPei/MmCommunicationPei.h
>> create mode 100644 ArmPkg/Drivers/MmCommunicationPei/MmCommunicationPei.inf
>> create mode 100644 MdeModulePkg/Universal/Variable/MmVariablePei/MmVariablePei.h
>> create mode 100644 MdeModulePkg/Universal/Variable/MmVariablePei/MmVariablePei.inf
>>
>
>