From: Jiewen Yao <jiewen.yao@intel.com>
Date: Sat, 23 Sep 2017 08:27:50 +0000 (+0800)
Subject: IntelSiliconPkg/VtdPmrPei: Add premem support.
X-Git-Tag: edk2-stable201903~3159
X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=a1e7cd0b020ac024015095068b02e03a68edd96c;hp=a1e7cd0b020ac024015095068b02e03a68edd96c

IntelSiliconPkg/VtdPmrPei: Add premem support.

Remove memory discovered dependency to support both premem
VTD_INFO_PPI and postmem VTD_INFO_PPI.

If VTD_INFO_PPI is installed before memory is ready, this
driver protects all memory region.
If VTD_INFO_PPI is installed or reinstalled after memory
is ready, this driver allocates DMA buffer and protect rest.

Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
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