From: Jason1 Lin <jason1....@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3922
[Description]
CheckOverlap function would do incorrect split on the BiosModule which not
happen overlap. This would cause incorrect value locate in FIT entry record.
[Condition]
- This BiosModule base address is lower than input address.
- This BiosModule size is smaller than input size.
[Resolution]
- Do the type coversion to UINT64 to prevent overflow when the value shuld be
nagative.
- Do the type coversion from UINT64 to INT64 to do the comparsion with possible
nagative value.
Signed-off-by: Jason1 Lin <jason1....@intel.com>
Cc: Bob Feng <bob.c.f...@intel.com>
Cc: Liming Gao <gaolim...@byosoft.com.cn>
Cc: Yuwei Chen <yuwei.c...@intel.com>
Cc: Dakota Chiang <dakota.chi...@intel.com>
Cc: Vanessa Chuang <vanessa.chu...@intel.com>
---
Silicon/Intel/Tools/FitGen/FitGen.c | 30 +++++++++++++++++++-
Silicon/Intel/Tools/FitGen/FitGen.h | 2 +-
2 files changed, 30 insertions(+), 2 deletions(-)
diff --git a/Silicon/Intel/Tools/FitGen/FitGen.c
b/Silicon/Intel/Tools/FitGen/FitGen.c
index 290e688f6e..9d7185dc55 100644
--- a/Silicon/Intel/Tools/FitGen/FitGen.c
+++ b/Silicon/Intel/Tools/FitGen/FitGen.c
@@ -755,12 +755,40 @@ CheckOverlap (
IN UINT32 Address,
IN UINT32 Size
)
+/*++
+Routine Description:
+
+ Check wheather the input address and size is overlap with any BiosModule.
+ If happen overlap, need to be deal with this case.
+ --- +--------------+ <------ BiosModule A Base
+--------------+
+ | | | |
|
+ | | |
BiosModule |
+ | | | A
|
+ | | |
|
+ BiosModule A +--------------+ <------ [Input] Address ====>
+--------------+
+ Size | | |
+ | | | [Input] Size
+ +--------------+ ------
+--------------+
+ | | |
BiosModule |
+ | | | | B
|
+ --- +--------------+
+--------------+
+
+Arguments:
+
+ Address - The address of the buffer that required to check.
+ Size - The size of the buffer that required to check.
+
+Returns:
+
+ None
+
+--*/
{
INTN Index;
for (Index = 0; Index < (INTN)gFitTableContext.BiosModuleNumber; Index ++) {
if ((gFitTableContext.BiosModule[Index].Address <= Address) &&
- ((gFitTableContext.BiosModule[Index].Size - Size) >= (Address -
gFitTableContext.BiosModule[Index].Address))) {
+ ((INT64)((UINT64)gFitTableContext.BiosModule[Index].Size -
(UINT64)Size) >= (INT64)((UINT64)Address -
(UINT64)gFitTableContext.BiosModule[Index].Address))) {
UINT32 TempSize;
INT32 SubIndex;
diff --git a/Silicon/Intel/Tools/FitGen/FitGen.h
b/Silicon/Intel/Tools/FitGen/FitGen.h
index 5add6a8870..4943ee259c 100644
--- a/Silicon/Intel/Tools/FitGen/FitGen.h
+++ b/Silicon/Intel/Tools/FitGen/FitGen.h
@@ -31,7 +31,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
// Utility version information
//
#define UTILITY_MAJOR_VERSION 0
-#define UTILITY_MINOR_VERSION 64
+#define UTILITY_MINOR_VERSION 65
#define UTILITY_DATE __DATE__
//
--
2.36.1.windows.1
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