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MdeModulePkg: Update PCD driver to support the optimized PcdDataBase

Browse Source 
https://bugzilla.tianocore.org/show_bug.cgi?id=546
BaseTools will generate the optimized PCD database to save the image size
at build time for multiple SKUs. The optimized PCD database layout will be like
below, the PCD database will be composed of the full default SKU data
(PCD_DATABASE_INIT) and the non-default SKU delta data(PCD_DATABASE_SKU_DELTA).
PCD driver will build HOB to store the full default SKU data, and patch HOB
data based on non-default SKU delta data for the SKU set by SetSku(),
it can save memory resource at boot time.

//
// PCD database layout:
// +---------------------------------+
// | PCD_DATABASE_INIT (DEFAULT SKU) |
// +---------------------------------+
// | PCD_DATABASE_SKU_DELTA (SKU A)  |
// +---------------------------------+
// | PCD_DATABASE_SKU_DELTA (SKU B)  |
// +---------------------------------+
// | ......                          |
// +---------------------------------+
//

BaseTools, PCD database and driver updates are needed for this proposal.
For single SKU (default) case, this proposal is expected to have no impact.
For multi-SKU case, PCD database format will be changed.
So, PcdDataBase Version is also updated from 6 to 7.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
This commit is contained in:
Liming Gao
2017-12-22 13:41:54 +08:00
parent 219247e164
commit 7c73626513
8 changed files with 346 additions and 460 deletions
Download Patch File Download Diff File Expand all files Collapse all files

235
MdeModulePkg/Universal/PCD/Pei/Pcd.c
View File

@@ -228,6 +228,103 @@ PcdSetNvStoreDefaultIdCallBack (
ASSERT_EFI_ERROR (Status);
}
/**
Report Pei PCD database of all SKUs as Guid HOB so that DxePcd can access it.
@param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation
@param NotifyDescriptor Address of the notification descriptor data structure.
@param Ppi Address of the PPI that was installed.
@retval EFI_SUCCESS Successfully update the Boot records.
**/
EFI_STATUS
EFIAPI
EndOfPeiSignalPpiNotifyCallback (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
IN VOID *Ppi
)
{
PEI_PCD_DATABASE *Database;
EFI_BOOT_MODE BootMode;
EFI_STATUS Status;
UINTN Instance;
EFI_PEI_FV_HANDLE VolumeHandle;
EFI_PEI_FILE_HANDLE FileHandle;
VOID *PcdDb;
UINT32 Length;
PEI_PCD_DATABASE *PeiPcdDb;
Status = PeiServicesGetBootMode(&BootMode);
ASSERT_EFI_ERROR (Status);
//
// Don't need to report it on S3 boot.
//
if (BootMode == BOOT_ON_S3_RESUME) {
return EFI_SUCCESS;
}
PeiPcdDb = GetPcdDatabase();
if (PeiPcdDb->SystemSkuId != (SKU_ID) 0) {
//
// SkuId has been set. Don't need to report it to DXE phase.
//
return EFI_SUCCESS;
}
//
// Get full PCD database from PcdPeim FileHandle
//
Instance = 0;
FileHandle = NULL;
while (TRUE) {
//
// Traverse all firmware volume instances
//
Status = PeiServicesFfsFindNextVolume (Instance, &VolumeHandle);
//
// Error should not happen
//
ASSERT_EFI_ERROR (Status);
//
// Find PcdDb file from the beginning in this firmware volume.
//
FileHandle = NULL;
Status = PeiServicesFfsFindFileByName (&gEfiCallerIdGuid, VolumeHandle, &FileHandle);
if (!EFI_ERROR (Status)) {
//
// Find PcdPeim FileHandle in this volume
//
break;
}
//
// We cannot find PcdPeim in this firmware volume, then search the next volume.
//
Instance++;
}
//
// Find PEI PcdDb and Build second PcdDB GuidHob
//
Status = PeiServicesFfsFindSectionData (EFI_SECTION_RAW, FileHandle, &PcdDb);
ASSERT_EFI_ERROR (Status);
Length = PeiPcdDb->LengthForAllSkus;
Database = BuildGuidHob (&gPcdDataBaseHobGuid, Length);
CopyMem (Database, PcdDb, Length);
return EFI_SUCCESS;
}
EFI_PEI_NOTIFY_DESCRIPTOR mEndOfPeiSignalPpiNotifyList[] = {
{
(EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
&gEfiEndOfPeiSignalPpiGuid,
EndOfPeiSignalPpiNotifyCallback
}
};
/**
Main entry for PCD PEIM driver.
@@ -262,6 +359,9 @@ PcdPeimInit (
Status = PeiServicesInstallPpi (&mPpiList2[0]);
ASSERT_EFI_ERROR (Status);
Status = PeiServicesNotifyPpi (&mEndOfPeiSignalPpiNotifyList[0]);
ASSERT_EFI_ERROR (Status);
Status = PeiRegisterCallBackOnSet (
&gEfiMdeModulePkgTokenSpaceGuid,
PcdToken(PcdSetNvStoreDefaultId),
@@ -366,6 +466,14 @@ PeiPcdSetSku (
PEI_PCD_DATABASE *PeiPcdDb;
SKU_ID *SkuIdTable;
UINTN Index;
EFI_STATUS Status;
UINTN Instance;
EFI_PEI_FV_HANDLE VolumeHandle;
EFI_PEI_FILE_HANDLE FileHandle;
VOID *PcdDb;
UINT32 Length;
PCD_DATABASE_SKU_DELTA *SkuDelta;
PCD_DATA_DELTA *SkuDeltaData;
PeiPcdDb = GetPcdDatabase();
@@ -391,8 +499,70 @@ PeiPcdSetSku (
SkuIdTable = (SKU_ID *) ((UINT8 *) PeiPcdDb + PeiPcdDb->SkuIdTableOffset);
for (Index = 0; Index < SkuIdTable[0]; Index++) {
if (SkuId == SkuIdTable[Index + 1]) {
DEBUG ((EFI_D_INFO, "PcdPei - Set current SKU Id to 0x%lx.\n", (SKU_ID) SkuId));
break;
}
}
if (Index < SkuIdTable[0]) {
//
// Get full PCD database from PcdPeim FileHandle
//
Instance = 0;
FileHandle = NULL;
while (TRUE) {
//
// Traverse all firmware volume instances
//
Status = PeiServicesFfsFindNextVolume (Instance, &VolumeHandle);
//
// Error should not happen
//
ASSERT_EFI_ERROR (Status);
//
// Find PcdDb file from the beginning in this firmware volume.
//
FileHandle = NULL;
Status = PeiServicesFfsFindFileByName (&gEfiCallerIdGuid, VolumeHandle, &FileHandle);
if (!EFI_ERROR (Status)) {
//
// Find PcdPeim FileHandle in this volume
//
break;
}
//
// We cannot find PcdPeim in this firmware volume, then search the next volume.
//
Instance++;
}
//
// Find the delta data between the different Skus
//
Status = PeiServicesFfsFindSectionData (EFI_SECTION_RAW, FileHandle, &PcdDb);
ASSERT_EFI_ERROR (Status);
Length = PeiPcdDb->LengthForAllSkus;
Index = (PeiPcdDb->Length + 7) & (~7);
SkuDelta = NULL;
while (Index < Length) {
SkuDelta = (PCD_DATABASE_SKU_DELTA *) ((UINT8 *) PcdDb + Index);
if (SkuDelta->SkuId == SkuId && SkuDelta->SkuIdCompared == 0) {
break;
}
Index = (Index + SkuDelta->Length + 7) & (~7);
}
//
// Patch the delta data into current PCD database
//
if (Index < Length && SkuDelta != NULL) {
SkuDeltaData = (PCD_DATA_DELTA *) (SkuDelta + 1);
while ((UINT8 *) SkuDeltaData < (UINT8 *) SkuDelta + SkuDelta->Length) {
*((UINT8 *) PeiPcdDb + SkuDeltaData->Offset) = (UINT8) SkuDeltaData->Value;
SkuDeltaData ++;
}
PeiPcdDb->SystemSkuId = (SKU_ID) SkuId;
DEBUG ((DEBUG_INFO, "PcdPei - Set current SKU Id to 0x%lx.\n", (SKU_ID) SkuId));
return;
}
}
@@ -401,6 +571,7 @@ PeiPcdSetSku (
// Invalid input SkuId, the default SKU Id will be still used for the system.
//
DEBUG ((EFI_D_INFO, "PcdPei - Invalid input SkuId, the default SKU Id will be still used.\n"));
return;
}
@@ -1406,9 +1577,7 @@ GetPtrTypeSize (
{
INTN SizeTableIdx;
UINTN LocalTokenNumber;
SKU_ID *SkuIdTable;
SIZE_INFO *SizeTable;
UINTN Index;
SizeTableIdx = GetSizeTableIndex (LocalTokenNumberTableIdx, Database);
@@ -1432,27 +1601,12 @@ GetPtrTypeSize (
//
return *MaxSize;
} else {
if ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == 0) {
//
// We have only two entry for Non-Sku enabled PCD entry:
// 1) MAX SIZE
// 2) Current Size
//
return SizeTable[SizeTableIdx + 1];
} else {
//
// We have these entry for SKU enabled PCD entry
// 1) MAX SIZE
// 2) Current Size for each SKU_ID (It is equal to MaxSku).
//
SkuIdTable = GetSkuIdArray (LocalTokenNumberTableIdx, Database);
for (Index = 0; Index < SkuIdTable[0]; Index++) {
if (SkuIdTable[1 + Index] == Database->SystemSkuId) {
return SizeTable[SizeTableIdx + 1 + Index];
}
}
return SizeTable[SizeTableIdx + 1];
}
//
// We have only two entry for Non-Sku enabled PCD entry:
// 1) MAX SIZE
// 2) Current Size
//
return SizeTable[SizeTableIdx + 1];
}
}
@@ -1479,9 +1633,7 @@ SetPtrTypeSize (
{
INTN SizeTableIdx;
UINTN LocalTokenNumber;
SKU_ID *SkuIdTable;
SIZE_INFO *SizeTable;
UINTN Index;
UINTN MaxSize;
SizeTableIdx = GetSizeTableIndex (LocalTokenNumberTableIdx, Database);
@@ -1510,30 +1662,13 @@ SetPtrTypeSize (
return FALSE;
}
if ((LocalTokenNumber & PCD_TYPE_SKU_ENABLED) == 0) {
//
// We have only two entry for Non-Sku enabled PCD entry:
// 1) MAX SIZE
// 2) Current Size
//
SizeTable[SizeTableIdx + 1] = (SIZE_INFO) *CurrentSize;
return TRUE;
} else {
//
// We have these entry for SKU enabled PCD entry
// 1) MAX SIZE
// 2) Current Size for each SKU_ID (It is equal to MaxSku).
//
SkuIdTable = GetSkuIdArray (LocalTokenNumberTableIdx, Database);
for (Index = 0; Index < SkuIdTable[0]; Index++) {
if (SkuIdTable[1 + Index] == Database->SystemSkuId) {
SizeTable[SizeTableIdx + 1 + Index] = (SIZE_INFO) *CurrentSize;
return TRUE;
}
}
SizeTable[SizeTableIdx + 1] = (SIZE_INFO) *CurrentSize;
return TRUE;
}
//
// We have only two entry for Non-Sku enabled PCD entry:
// 1) MAX SIZE
// 2) Current Size
//
SizeTable[SizeTableIdx + 1] = (SIZE_INFO) *CurrentSize;
return TRUE;
}
}