b7fc17ce1fc1b70a42f18fc2b14e70b20a873e04
If IOMMU is enabled, the legacy BIOS need allow the legacy memory
access by the legacy device.
The legacy memory is below 1M memory and HighPmm memory.
Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
(cherry picked from commit 60794ee6b0
)
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