Loading PEIM 86D70125-BAA3-4296-A62F-602BEBBB9081
Loading PEIM at 0x00007ECF000 EntryPoint=0x00007ECF5A8 DxeIpl.efi
Install PPI: 1A36E4E7-FAB6-476A-8E75-695A0576FDD7
Install PPI: 0AE8CE5D-E448-4437-A8D7-EBF5F194F731
代码在\MdeModulePkg\Core\DxeIplPeim 中，模块入口是如下函数：
/**
Entry point of DXE IPL PEIM.
This function installs DXE IPL PPI. It also reloads
itself to memory on non-S3 resume boot path.
@param FileHandle Handle of the file being invoked.
@param PeiServices Describes the list of possible PEI Services.
@retval EFI_SUCESS The entry point of DXE IPL PEIM executes successfully.
@retval Others Some error occurs during the execution of this function.
**/
EFI_STATUS
EFIAPI
PeimInitializeDxeIpl (
IN EFI_PEI_FILE_HANDLE FileHandle,
IN CONST EFI_PEI_SERVICES **PeiServices
)
1A36E4E7-FAB6-476A-8E75-695A0576FDD7 是 EFI_PEI_DECOMPRESS_PPI_GUID
0AE8CE5D-E448-4437-A8D7-EBF5F194F731 是EFI_DXE_IPL_PPI_GUID
Loading PEIM 89E549B0-7CFE-449D-9BA3-10D8B2312D71
Loading PEIM at 0x00007ECA000 EntryPoint=0x00007ECA5C8 S3Resume2Pei.efi
Install PPI: 6D582DBC-DB85-4514-8FCC-5ADF6227B147
代码在 \ueficpupkg\universal\acpi\s3resume2pei\中
/**
Main entry for S3 Resume PEIM.
This routine is to install EFI_PEI_S3_RESUME2_PPI.
@param FileHandle Handle of the file being invoked.
@param PeiServices Pointer to PEI Services table.
@retval EFI_SUCCESS S3Resume Ppi is installed successfully.
**/
EFI_STATUS
EFIAPI
PeimS3ResumeEntryPoint (
IN EFI_PEI_FILE_HANDLE FileHandle,
IN CONST EFI_PEI_SERVICES **PeiServices
)
动作是安装 EFI_PEI_S3_RESUME2_PPI_GUID 6D582DBC-DB85-4514-8FCC-5ADF6227B147 这个 PPI
当全部的 PEIM 都加载之后， \mdemodulepkg\core\pei\dispatcher\Dispatcher.c 会执行下面的代码，在第二个FV 中扫描查找 PEIM：
if (Private->CurrentPeimCount == 0) {
//
// When going through each FV, at first, search Apriori file to
// reorder all PEIMs to ensure the PEIMs in Apriori file to get
// dispatch at first.
//
DiscoverPeimsAndOrderWithApriori (Private, CoreFvHandle);
}
查找没有找到,输入如下：
DiscoverPeimsAndOrderWithApriori(): Found 0x0 PEI FFS files in the 1th FV
\mdemodulepkg\core\pei\peimain\PeiMain.c 中如下代码执行完毕，至此PEI 阶段就结束了。
//
// Call PEIM dispatcher
//
PeiDispatcher (SecCoreData, &PrivateData);
接下来查找 IPL PPI
//
// Lookup DXE IPL PPI
//
Status = PeiServicesLocatePpi (
&gEfiDxeIplPpiGuid,
0,
NULL,
(VOID **)&TempPtr.DxeIpl
);
ASSERT_EFI_ERROR (Status);
通过这个 PPI 进入 DXE 阶段：
//
// Enter DxeIpl to load Dxe core.
//
DEBUG ((EFI_D_INFO, "DXE IPL Entry\n"));
Status = TempPtr.DxeIpl->Entry (
TempPtr.DxeIpl,
&PrivateData.Ps,
PrivateData.HobList
);
至此开始了新的阶段。