diff options
Diffstat (limited to 'MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c')
| -rw-r--r-- | MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c | 134 |
1 files changed, 118 insertions, 16 deletions
diff --git a/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c b/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c index 455c79b1bb..85a1ad7d8e 100644 --- a/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c +++ b/MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c @@ -241,6 +241,50 @@ ShadowPeiCore( //
#define MINIMUM_INITIAL_MEMORY_SIZE 0x10000
/**
+ This function is to test if the memory range described in resource HOB is available or not.
+
+ This function should only be invoked when Loading Module at Fixed Address(LMFA) feature is enabled. Some platform may allocate the
+ memory before PeiLoadFixAddressHook in invoked. so this function is to test if the memory range described by the input resource HOB is
+ available or not.
+
+ @param PrivateData Pointer to the private data passed in from caller
+ @param ResourceHob Pointer to a resource HOB which described the memory range described by the input resource HOB
+**/
+BOOLEAN
+PeiLoadFixAddressIsMemoryRangeAvailable (
+ IN PEI_CORE_INSTANCE *PrivateData,
+ IN EFI_HOB_RESOURCE_DESCRIPTOR *ResourceHob
+ )
+{
+ EFI_HOB_MEMORY_ALLOCATION *MemoryHob;
+ BOOLEAN IsAvailable;
+ EFI_PEI_HOB_POINTERS Hob;
+
+ IsAvailable = TRUE;
+ if (PrivateData == NULL || ResourceHob == NULL) {
+ return FALSE;
+ }
+ //
+ // test if the memory range describe in the HOB is already allocated.
+ //
+ for (Hob.Raw = PrivateData->HobList.Raw; !END_OF_HOB_LIST(Hob); Hob.Raw = GET_NEXT_HOB(Hob)) {
+ //
+ // See if this is a memory allocation HOB
+ //
+ if (GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_MEMORY_ALLOCATION) {
+ MemoryHob = Hob.MemoryAllocation;
+ if(MemoryHob->AllocDescriptor.MemoryBaseAddress == ResourceHob->PhysicalStart &&
+ MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength == ResourceHob->PhysicalStart + ResourceHob->ResourceLength) {
+ IsAvailable = FALSE;
+ break;
+ }
+ }
+ }
+
+ return IsAvailable;
+
+}
+/**
Hook function for Loading Module at Fixed Address feature
This function should only be invoked when Loading Module at Fixed Address(LMFA) feature is enabled. When feature is
@@ -269,6 +313,7 @@ PeiLoadFixAddressHook( EFI_PEI_HOB_POINTERS NextHob;
EFI_PHYSICAL_ADDRESS MaxMemoryBaseAddress;
UINT64 MaxMemoryLength;
+ EFI_HOB_MEMORY_ALLOCATION *MemoryHob;
//
// Initialize Local Variables
//
@@ -362,6 +407,61 @@ PeiLoadFixAddressHook( }
}
//
+ // Some platform is already allocated pages before the HOB re-org. Here to build dedicated resource HOB to describe
+ // the allocated memory range
+ //
+ for (Hob.Raw = PrivateData->HobList.Raw; !END_OF_HOB_LIST(Hob); Hob.Raw = GET_NEXT_HOB(Hob)) {
+ //
+ // See if this is a memory allocation HOB
+ //
+ if (GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_MEMORY_ALLOCATION) {
+ MemoryHob = Hob.MemoryAllocation;
+ for (NextHob.Raw = PrivateData->HobList.Raw; !END_OF_HOB_LIST(NextHob); NextHob.Raw = GET_NEXT_HOB(NextHob)) {
+ //
+ // See if this is a resource descriptor HOB
+ //
+ if (GET_HOB_TYPE (NextHob) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
+ NextResourceHob = NextHob.ResourceDescriptor;
+ //
+ // If range described in this hob is not system memory or heigher than MAX_ADDRESS, ignored.
+ //
+ if (NextResourceHob->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY && NextResourceHob->PhysicalStart + NextResourceHob->ResourceLength > MAX_ADDRESS) {
+ continue;
+ }
+ //
+ // If the range describe in memory allocation HOB belongs to the memroy range described by the resource hob
+ //
+ if (MemoryHob->AllocDescriptor.MemoryBaseAddress >= NextResourceHob->PhysicalStart &&
+ MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength <= NextResourceHob->PhysicalStart + NextResourceHob->ResourceLength) {
+ //
+ // Build seperate resource hob for this allocated range
+ //
+ if (MemoryHob->AllocDescriptor.MemoryBaseAddress > NextResourceHob->PhysicalStart) {
+ BuildResourceDescriptorHob (
+ EFI_RESOURCE_SYSTEM_MEMORY,
+ NextResourceHob->ResourceAttribute,
+ NextResourceHob->PhysicalStart,
+ (MemoryHob->AllocDescriptor.MemoryBaseAddress - NextResourceHob->PhysicalStart)
+ );
+ }
+ if (MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength < NextResourceHob->PhysicalStart + NextResourceHob->ResourceLength) {
+ BuildResourceDescriptorHob (
+ EFI_RESOURCE_SYSTEM_MEMORY,
+ NextResourceHob->ResourceAttribute,
+ MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength,
+ (NextResourceHob->PhysicalStart + NextResourceHob->ResourceLength -(MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength))
+ );
+ }
+ NextResourceHob->PhysicalStart = MemoryHob->AllocDescriptor.MemoryBaseAddress;
+ NextResourceHob->ResourceLength = MemoryHob->AllocDescriptor.MemoryLength;
+ break;
+ }
+ }
+ }
+ }
+ }
+
+ //
// Try to find and validate the TOP address.
//
if ((INT64)PcdGet64(PcdLoadModuleAtFixAddressEnable) > 0 ) {
@@ -396,11 +496,12 @@ PeiLoadFixAddressHook( // See if Top address specified by user is valid.
//
if (ResourceHob->PhysicalStart + TotalReservedMemorySize < TopLoadingAddress &&
- (ResourceHob->PhysicalStart + ResourceHob->ResourceLength - MINIMUM_INITIAL_MEMORY_SIZE) >= TopLoadingAddress) {
+ (ResourceHob->PhysicalStart + ResourceHob->ResourceLength - MINIMUM_INITIAL_MEMORY_SIZE) >= TopLoadingAddress &&
+ PeiLoadFixAddressIsMemoryRangeAvailable(PrivateData, ResourceHob)) {
CurrentResourceHob = ResourceHob;
CurrentHob = Hob;
break;
- }
+ }
}
}
}
@@ -428,7 +529,7 @@ PeiLoadFixAddressHook( //
// See if Top address specified by user is valid.
//
- if (ResourceHob->ResourceLength > TotalReservedMemorySize) {
+ if (ResourceHob->ResourceLength > TotalReservedMemorySize && PeiLoadFixAddressIsMemoryRangeAvailable(PrivateData, ResourceHob)) {
DEBUG ((EFI_D_INFO, "(0x%lx, 0x%lx)\n",
(ResourceHob->PhysicalStart + TotalReservedMemorySize -MINIMUM_INITIAL_MEMORY_SIZE),
(ResourceHob->PhysicalStart + ResourceHob->ResourceLength -MINIMUM_INITIAL_MEMORY_SIZE)
@@ -440,7 +541,8 @@ PeiLoadFixAddressHook( //
// Assert here
//
- ASSERT (FALSE);
+ ASSERT (FALSE);
+ return;
}
} else {
//
@@ -462,7 +564,7 @@ PeiLoadFixAddressHook( //
if (ResourceHob->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY &&
ResourceHob->PhysicalStart + ResourceHob->ResourceLength <= MAX_ADDRESS &&
- ResourceHob->ResourceLength > TotalReservedMemorySize) {
+ ResourceHob->ResourceLength > TotalReservedMemorySize && PeiLoadFixAddressIsMemoryRangeAvailable(PrivateData, ResourceHob)) {
//
// See if this is the highest largest system memory region below MaxAddress
//
@@ -479,7 +581,8 @@ PeiLoadFixAddressHook( //
// Assert here
//
- ASSERT (FALSE);
+ ASSERT (FALSE);
+ return;
} else {
TopLoadingAddress = CurrentResourceHob->PhysicalStart + CurrentResourceHob->ResourceLength ;
}
@@ -487,10 +590,10 @@ PeiLoadFixAddressHook( if (CurrentResourceHob != NULL) {
//
- // rebuild hob for PEI memmory and reserved memory
+ // rebuild resource HOB for PEI memmory and reserved memory
//
BuildResourceDescriptorHob (
- EFI_RESOURCE_SYSTEM_MEMORY, // MemoryType,
+ EFI_RESOURCE_SYSTEM_MEMORY,
(
EFI_RESOURCE_ATTRIBUTE_PRESENT |
EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
@@ -500,15 +603,15 @@ PeiLoadFixAddressHook( EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
),
- (TopLoadingAddress - TotalReservedMemorySize), // MemoryBegin
- TotalReservedMemorySize // MemoryLength
+ (TopLoadingAddress - TotalReservedMemorySize),
+ TotalReservedMemorySize
);
//
- // rebuild hob for the remain memory if necessary
+ // rebuild resource for the remain memory if necessary
//
if (CurrentResourceHob->PhysicalStart < TopLoadingAddress - TotalReservedMemorySize) {
BuildResourceDescriptorHob (
- EFI_RESOURCE_SYSTEM_MEMORY, // MemoryType,
+ EFI_RESOURCE_SYSTEM_MEMORY,
(
EFI_RESOURCE_ATTRIBUTE_PRESENT |
EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
@@ -517,8 +620,8 @@ PeiLoadFixAddressHook( EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
),
- CurrentResourceHob->PhysicalStart, // MemoryBegin
- (TopLoadingAddress - TotalReservedMemorySize - CurrentResourceHob->PhysicalStart) // MemoryLength
+ CurrentResourceHob->PhysicalStart,
+ (TopLoadingAddress - TotalReservedMemorySize - CurrentResourceHob->PhysicalStart)
);
}
if (CurrentResourceHob->PhysicalStart + CurrentResourceHob->ResourceLength > TopLoadingAddress ) {
@@ -802,8 +905,7 @@ PeiDispatcher ( //
PeiLoadFixAddressHook(Private);
//
- // if Loading Module at Fixed Address is enabled, This is the first invoke to page
- // allocation for Pei Code range. This memory range should be reserved for loading PEIMs
+ // if Loading Module at Fixed Address is enabled, Allocating memory range for Pei code range.
//
LoadFixPeiCodeBegin = AllocatePages((UINTN)PcdGet32(PcdLoadFixAddressPeiCodePageNumber));
DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: PeiCodeBegin = 0x%lX, PeiCodeTop= 0x%lX\n", (UINT64)(UINTN)LoadFixPeiCodeBegin, (UINT64)((UINTN)LoadFixPeiCodeBegin + PcdGet32(PcdLoadFixAddressPeiCodePageNumber) * EFI_PAGE_SIZE)));
|