-----邮件原件----- 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Dionna Glaze via groups.io 发送时间: 2022年11月9日 5:16 收件人: devel@edk2.groups.io 抄送: Dionna Glaze <dionnaglaze@...>; Michael D Kinney <michael.d.kinney@...>; Ard Biesheuvel <ardb@...>; Gerd Hoffman <kraxel@...>; Jiewen Yao <jiewen.yao@...> 主题: [edk2-devel] [PATCH v2 4/4] MdePkg: Signal AfterReadyToBoot after ReadyToBoot
The Uefi v2.9 specification adds this event group in section 3.1.7, with its GUID defined in the Related Definitions section of EFI_BOOT_SERVICES.CreateEventEx() in chapter 7.
Cc: "Michael D Kinney" <michael.d.kinney@...> Cc: Ard Biesheuvel <ardb@...> Cc: Gerd Hoffman <kraxel@...> Cc: Jiewen Yao <jiewen.yao@...>
diff --git a/MdePkg/Include/Library/UefiLib.h b/MdePkg/Include/Library/UefiLib.h index be7da7fdf7..2c3342351e 100644 --- a/MdePkg/Include/Library/UefiLib.h +++ b/MdePkg/Include/Library/UefiLib.h @@ -890,6 +890,8 @@ UnicodeStringDisplayLength ( /** Create, Signal, and Close the Ready to Boot event using EfiSignalEventReadyToBoot().
+ If successful, then create, signal and close the After Ready to Boot event. + This function abstracts the signaling of the Ready to Boot Event. The Framework moved from a proprietary to UEFI 2.0 based mechanism. This library abstracts the caller from how this event is created to prevent to code form having to change with the diff --git a/MdePkg/Library/UefiLib/UefiLib.inf b/MdePkg/Library/UefiLib/UefiLib.inf index 01ed92092d..5c4064eafa 100644 --- a/MdePkg/Library/UefiLib/UefiLib.inf +++ b/MdePkg/Library/UefiLib/UefiLib.inf @@ -60,6 +60,7 @@ gEfiGlobalVariableGuid ## SOMETIMES_CONSUMES ## Variable gEfiAcpi20TableGuid ## SOMETIMES_CONSUMES ## SystemTable gEfiAcpi10TableGuid ## SOMETIMES_CONSUMES ## SystemTable + gEfiEventAfterReadyToBootGuid ## SOMETIMES_CONSUMES ## Event
[Protocols] gEfiDriverBindingProtocolGuid ## SOMETIMES_PRODUCES diff --git a/MdePkg/Library/UefiLib/UefiNotTiano.c b/MdePkg/Library/UefiLib/UefiNotTiano.c index d84e91fd01..04fe42f9f7 100644 --- a/MdePkg/Library/UefiLib/UefiNotTiano.c +++ b/MdePkg/Library/UefiLib/UefiNotTiano.c @@ -208,6 +208,8 @@ EfiCreateEventReadyToBootEx ( /** Create, Signal, and Close the Ready to Boot event using EfiSignalEventReadyToBoot().
+ If successful, then create, signal and close the After Ready to Boot event. + This function abstracts the signaling of the Ready to Boot Event. The Framework moved from a proprietary to UEFI 2.0 based mechanism. This library abstracts the caller from how this event is created to prevent to code form having to change with the @@ -222,11 +224,27 @@ EfiSignalEventReadyToBoot ( { EFI_STATUS Status; EFI_EVENT ReadyToBootEvent; + EFI_EVENT AfterReadyToBootEvent;
Status = EfiCreateEventReadyToBoot (&ReadyToBootEvent); if (!EFI_ERROR (Status)) { gBS->SignalEvent (ReadyToBootEvent); gBS->CloseEvent (ReadyToBootEvent); + return; + } +
Return should not be here. This means ReadyToBoot event creates successfully and return. But, the behavior should be ReadyToBoot and AfterReadyToBoot event both trig.
Thanks Liming
+ /* Then immediately signal the after ready to boot event group */ + Status = gBS->CreateEventEx ( + EVT_NOTIFY_SIGNAL, + TPL_CALLBACK, + EfiEventEmptyFunction, + NULL, + &gEfiEventAfterReadyToBootGuid, + AfterReadyToBootEvent + ); + if (!EFI_ERROR(Status)) { + gBS->SignalEvent (AfterReadyToBootEvent); + gBS->CloseEvent (AfterReadyToBootEvent); } }
