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| author | Wei6 Xu <wei6.xu@intel.com> | 2023-10-30 10:20:48 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2023-12-19 09:29:07 +0000 |
| commit | c0122840489194215a9209bb37f406f44c416953 (patch) | |
| tree | ca6c3f69506d0e214804d1a2cdd04ac676617019 /StandaloneMmPkg/Core/StandaloneMmCore.h | |
| parent | 74daeded0cabe87d26546f07f9a3911cb60ec0e1 (diff) | |
| download | edk2-c0122840489194215a9209bb37f406f44c416953.tar.gz edk2-c0122840489194215a9209bb37f406f44c416953.tar.bz2 edk2-c0122840489194215a9209bb37f406f44c416953.zip | |
StandaloneMmPkg/Core: Limit FwVol encapsulation section recursion
MmCoreFfsFindMmDriver() is called recursively for encapsulation sections.
Currently this recursion is not limited. Introduce a new PCD
(fixed-at-build, or patchable-in-module), and make MmCoreFfsFindMmDriver()
track the section nesting depth against that PCD.
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Wei6 Xu <wei6.xu@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'StandaloneMmPkg/Core/StandaloneMmCore.h')
| -rw-r--r-- | StandaloneMmPkg/Core/StandaloneMmCore.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/StandaloneMmPkg/Core/StandaloneMmCore.h b/StandaloneMmPkg/Core/StandaloneMmCore.h index 822d95358c..da23b8dc3c 100644 --- a/StandaloneMmPkg/Core/StandaloneMmCore.h +++ b/StandaloneMmPkg/Core/StandaloneMmCore.h @@ -846,6 +846,32 @@ DumpMmramInfo ( VOID
);
+/**
+ Given the pointer to the Firmware Volume Header find the
+ MM driver and return its PE32 image.
+
+ @param [in] FwVolHeader Pointer to memory mapped FV
+ @param [in] Depth Nesting depth of encapsulation sections. Callers
+ different from MmCoreFfsFindMmDriver() are
+ responsible for passing in a zero Depth.
+
+ @retval EFI_SUCCESS Success.
+ @retval EFI_INVALID_PARAMETER Invalid parameter.
+ @retval EFI_NOT_FOUND Could not find section data.
+ @retval EFI_OUT_OF_RESOURCES Out of resources.
+ @retval EFI_VOLUME_CORRUPTED Firmware volume is corrupted.
+ @retval EFI_UNSUPPORTED Operation not supported.
+ @retval EFI_ABORTED Recursion aborted because Depth has been
+ greater than or equal to
+ PcdFwVolMmMaxEncapsulationDepth.
+
+**/
+EFI_STATUS
+MmCoreFfsFindMmDriver (
+ IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader,
+ IN UINT32 Depth
+ );
+
extern UINTN mMmramRangeCount;
extern EFI_MMRAM_DESCRIPTOR *mMmramRanges;
extern EFI_SYSTEM_TABLE *mEfiSystemTable;
|