diff options
Diffstat (limited to 'src/soc/amd/common/block/pi/heapmanager.c')
| -rw-r--r-- | src/soc/amd/common/block/pi/heapmanager.c | 40 |
1 files changed, 22 insertions, 18 deletions
diff --git a/src/soc/amd/common/block/pi/heapmanager.c b/src/soc/amd/common/block/pi/heapmanager.c index cea3171aa5..862ba3d524 100644 --- a/src/soc/amd/common/block/pi/heapmanager.c +++ b/src/soc/amd/common/block/pi/heapmanager.c @@ -77,8 +77,8 @@ AGESA_STATUS agesa_AllocateBuffer (UINT32 Func, UINTN Data, VOID *ConfigPtr) FreedNodePtr = (BIOS_BUFFER_NODE *)(BiosHeapBaseAddr + FreedNodeOffset); FreedNodePtr->BufferSize = AvailableHeapSize - - sizeof(BIOS_BUFFER_NODE) - - CurrNodePtr->BufferSize; + - (FreedNodeOffset - CurrNodeOffset) + - sizeof(BIOS_BUFFER_NODE); FreedNodePtr->NextNodeOffset = 0; /* Update the offsets for Allocated and Freed nodes */ @@ -250,13 +250,13 @@ AGESA_STATUS agesa_DeallocateBuffer (UINT32 Func, UINTN Data, VOID *ConfigPtr) memset((UINT8 *)AllocNodePtr + sizeof(BIOS_BUFFER_NODE), 0, AllocNodePtr->BufferSize); AllocNodePtr->BufferHandle = 0; - AllocNodePtr->BufferSize += sizeof(BIOS_BUFFER_NODE); /* Add deallocated node in order to the list of freed nodes */ FreedNodeOffset = BiosHeapBasePtr->StartOfFreedNodes; FreedNodePtr = (BIOS_BUFFER_NODE *)(BiosHeapBaseAddr + FreedNodeOffset); - EndNodeOffset = AllocNodeOffset + AllocNodePtr->BufferSize; + EndNodeOffset = AllocNodeOffset + AllocNodePtr->BufferSize + + sizeof(BIOS_BUFFER_NODE); if (AllocNodeOffset < FreedNodeOffset) { /* Add to the start of the freed list */ @@ -264,16 +264,14 @@ AGESA_STATUS agesa_DeallocateBuffer (UINT32 Func, UINTN Data, VOID *ConfigPtr) /* If the freed node is adjacent to the first node in * the list, concatenate both nodes */ - AllocNodePtr->BufferSize += FreedNodePtr->BufferSize; + AllocNodePtr->BufferSize += FreedNodePtr->BufferSize + + sizeof(BIOS_BUFFER_NODE); AllocNodePtr->NextNodeOffset = FreedNodePtr->NextNodeOffset; - /* Clear the BufferSize and NextNodeOffset of the - * previous first node - */ - FreedNodePtr->BufferSize = 0; - FreedNodePtr->NextNodeOffset = 0; - + /* Zero out the FreedNode header */ + memset((UINT8 *)FreedNodePtr, 0, + sizeof(BIOS_BUFFER_NODE)); } else { /* Otherwise, add freed node to the start of the list * Update NextNodeOffset and BufferSize to include the @@ -304,12 +302,14 @@ AGESA_STATUS agesa_DeallocateBuffer (UINT32 Func, UINTN Data, VOID *ConfigPtr) if (NextNodeOffset == EndNodeOffset) { NextNodePtr = (BIOS_BUFFER_NODE *)(BiosHeapBaseAddr + NextNodeOffset); - AllocNodePtr->BufferSize += NextNodePtr->BufferSize; + AllocNodePtr->BufferSize += NextNodePtr->BufferSize + + sizeof(BIOS_BUFFER_NODE); AllocNodePtr->NextNodeOffset = NextNodePtr->NextNodeOffset; - NextNodePtr->BufferSize = 0; - NextNodePtr->NextNodeOffset = 0; + /* Zero out the NextNode header */ + memset((UINT8 *)NextNodePtr, 0, + sizeof(BIOS_BUFFER_NODE)); } else { /*AllocNodePtr->NextNodeOffset = * FreedNodePtr->NextNodeOffset; */ @@ -321,14 +321,18 @@ AGESA_STATUS agesa_DeallocateBuffer (UINT32 Func, UINTN Data, VOID *ConfigPtr) */ PrevNodePtr = (BIOS_BUFFER_NODE *)(BiosHeapBaseAddr + PrevNodeOffset); - EndNodeOffset = PrevNodeOffset + PrevNodePtr->BufferSize; + EndNodeOffset = PrevNodeOffset + PrevNodePtr->BufferSize + + sizeof(BIOS_BUFFER_NODE); + if (AllocNodeOffset == EndNodeOffset) { PrevNodePtr->NextNodeOffset = AllocNodePtr->NextNodeOffset; - PrevNodePtr->BufferSize += AllocNodePtr->BufferSize; + PrevNodePtr->BufferSize += AllocNodePtr->BufferSize + + sizeof(BIOS_BUFFER_NODE); - AllocNodePtr->BufferSize = 0; - AllocNodePtr->NextNodeOffset = 0; + /* Zero out the AllocNode header */ + memset((UINT8 *)AllocNodePtr, 0, + sizeof(BIOS_BUFFER_NODE)); } else { PrevNodePtr->NextNodeOffset = AllocNodeOffset; } |