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OvmfPkg/Sec: Support SECTION2 DXEFV types 

Support down-stream projects that require large DXEFV sizes greater
than 16MB by handling SECTION2 common headers. These are already
created by the build tools when necessary.

Use IS_SECTION2 and SECTION2_SIZE macros to calculate accurate image
sizes when appropriate.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Thomas Palmer <thomas.palmer@hpe.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
[lersek@redhat.com: fix NB->MB typo in commit message]
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Thomas Palmer 2016-07-27 01:48:15 -05:00 committed by Laszlo Ersek
parent 5e443e3769
commit 39dbc4d553
1 changed files with 13 additions and 3 deletions
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16
OvmfPkg/Sec/SecMain.c
View File

@ -336,6 +336,8 @@ DecompressMemFvs (
EFI_COMMON_SECTION_HEADER *FvSection;
EFI_FIRMWARE_VOLUME_HEADER *PeiMemFv;
EFI_FIRMWARE_VOLUME_HEADER *DxeMemFv;
UINT32 FvHeaderSize;
UINT32 FvSectionSize;
FvSection = (EFI_COMMON_SECTION_HEADER*) NULL;
@ -420,11 +422,19 @@ DecompressMemFvs (
}
ASSERT (FvSection->Type == EFI_SECTION_FIRMWARE_VOLUME_IMAGE);
ASSERT (SECTION_SIZE (FvSection) ==
(PcdGet32 (PcdOvmfDxeMemFvSize) + sizeof (*FvSection)));
if (IS_SECTION2 (FvSection)) {
FvSectionSize = SECTION2_SIZE (FvSection);
FvHeaderSize = sizeof (EFI_COMMON_SECTION_HEADER2);
} else {
FvSectionSize = SECTION_SIZE (FvSection);
FvHeaderSize = sizeof (EFI_COMMON_SECTION_HEADER);
}
ASSERT (FvSectionSize == (PcdGet32 (PcdOvmfDxeMemFvSize) + FvHeaderSize));
DxeMemFv = (EFI_FIRMWARE_VOLUME_HEADER*)(UINTN) PcdGet32 (PcdOvmfDxeMemFvBase);
CopyMem (DxeMemFv, (VOID*) (FvSection + 1), PcdGet32 (PcdOvmfDxeMemFvSize));
CopyMem (DxeMemFv, (VOID*) ((UINTN)FvSection + FvHeaderSize), PcdGet32 (PcdOvmfDxeMemFvSize));
if (DxeMemFv->Signature != EFI_FVH_SIGNATURE) {
DEBUG ((EFI_D_ERROR, "Extracted FV at %p does not have FV header signature\n", DxeMemFv));