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Diffstat (limited to 'UefiCpuPkg/ResetVector/Vtf0/Ia16/ResetVectorVtf0.asm')
-rw-r--r--UefiCpuPkg/ResetVector/Vtf0/Ia16/ResetVectorVtf0.asm10
1 files changed, 9 insertions, 1 deletions
diff --git a/UefiCpuPkg/ResetVector/Vtf0/Ia16/ResetVectorVtf0.asm b/UefiCpuPkg/ResetVector/Vtf0/Ia16/ResetVectorVtf0.asm
index 7538192876..fe5bbea803 100644
--- a/UefiCpuPkg/ResetVector/Vtf0/Ia16/ResetVectorVtf0.asm
+++ b/UefiCpuPkg/ResetVector/Vtf0/Ia16/ResetVectorVtf0.asm
@@ -21,7 +21,15 @@ ALIGN 16
; located just below 0x100000000 (4GB) in the firmware device.
;
%ifdef ALIGN_TOP_TO_4K_FOR_PAGING
- TIMES (0x1000 - ($ - EndOfPageTables) - 0x20) DB 0
+ TIMES (0x1000 - ($ - EndOfPageTables)) DB 0
+;
+; Pad the VTF0 Reset code for Bsp & Ap to 4k aligned block.
+; Some implementations may need to keep the initial Reset code
+; to be separated out from rest of the code.
+; This padding will make sure lower 4K region below 4 GB may
+; only contains few jmp instructions and data.
+;
+ TIMES (0x1000 - 0x20) DB 0
%endif
applicationProcessorEntryPoint: