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Use SmmMemLib to check communication buffer.

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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: "Yao, Jiewen" <jiewen.yao@intel.com>
Reviewed-by: "Gao, Liming" <liming.gao@intel.com>
Reviewed-by: "Fan, Jeff" <jeff.fan@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16694 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Yao, Jiewen
2015-02-02 14:42:22 +00:00
committed by jyao1
parent d425764e3f
commit 842b1242d1
19 changed files with 109 additions and 573 deletions
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87
MdeModulePkg/Core/PiSmmCore/PiSmmCore.c
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@@ -85,11 +85,6 @@ SMM_CORE_SMI_HANDLERS mSmmCoreSmiHandlers[] = {
UINTN mFullSmramRangeCount;
EFI_SMRAM_DESCRIPTOR *mFullSmramRanges;
//
// Maximum support address used to check input CommunicationBuffer
//
UINTN mMaximumSupportAddress = 0;
/**
Place holder function until all the SMM System Table Service are available.
@@ -279,76 +274,6 @@ SmmEndOfDxeHandler (
return Status;
}
/**
Caculate and save the maximum support address.
**/
VOID
CaculateMaximumSupportAddress (
VOID
)
{
VOID *Hob;
UINT32 RegEax;
UINT8 PhysicalAddressBits;
//
// Get physical address bits supported.
//
Hob = GetFirstHob (EFI_HOB_TYPE_CPU);
if (Hob != NULL) {
PhysicalAddressBits = ((EFI_HOB_CPU *) Hob)->SizeOfMemorySpace;
} else {
AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);
if (RegEax >= 0x80000008) {
AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);
PhysicalAddressBits = (UINT8) RegEax;
} else {
PhysicalAddressBits = 36;
}
}
//
// IA-32e paging translates 48-bit linear addresses to 52-bit physical addresses.
//
ASSERT (PhysicalAddressBits <= 52);
if (PhysicalAddressBits > 48) {
PhysicalAddressBits = 48;
}
//
// Save the maximum support address in one global variable
//
mMaximumSupportAddress = (UINTN) (LShiftU64 (1, PhysicalAddressBits) - 1);
DEBUG ((EFI_D_INFO, "mMaximumSupportAddress = 0x%lx\n", mMaximumSupportAddress));
}
/**
Check if input buffer is in valid address scope or not.
@param[in] Pointer Pointer to the input buffer.
@param[in] BufferSize Input buffer size in bytes.
@retval TRUE The input buffer is in valid address scope.
@retval FALSE The input buffer is not in valid address scope.
**/
BOOLEAN
IsValidPointer (
IN VOID *Pointer,
IN UINTN BufferSize
)
{
if ((UINTN) Pointer > mMaximumSupportAddress) {
return FALSE;
}
if (BufferSize > (mMaximumSupportAddress - (UINTN) Pointer)) {
return FALSE;
}
return TRUE;
}
/**
The main entry point to SMM Foundation.
@@ -398,7 +323,7 @@ SmmEntryPoint (
//
// Synchronous SMI for SMM Core or request from Communicate protocol
//
if (!IsValidPointer (gSmmCorePrivate->CommunicationBuffer, gSmmCorePrivate->BufferSize)) {
if (!SmmIsBufferOutsideSmmValid ((UINTN)gSmmCorePrivate->CommunicationBuffer, gSmmCorePrivate->BufferSize)) {
//
// If CommunicationBuffer is not in valid address scope, return EFI_INVALID_PARAMETER
//
@@ -484,9 +409,10 @@ SmmMain (
gSmmCorePrivate->SmmEntryPoint = SmmEntryPoint;
//
// Initialize memory service using free SMRAM
// No need to initialize memory service.
// It is done in constructor of PiSmmCoreMemoryAllocationLib(),
// so that the library linked with PiSmmCore can use AllocatePool() in constuctor.
//
SmmInitializeMemoryServices (gSmmCorePrivate->SmramRangeCount, gSmmCorePrivate->SmramRanges);
SmramProfileInit ();
@@ -512,10 +438,5 @@ SmmMain (
RegisterSmramProfileHandler ();
//
// Caculate and save maximum support address used in SmmEntryPoint().
//
CaculateMaximumSupportAddress ();
return EFI_SUCCESS;
}