Peter Fang 9e97fd0680 dm: add BIOS/ROM image loading support at High BIOS region ...

Generic infrastructure for loading BIOS/ROM and providing EPT pages at
High BIOS region.

The size of High BIOS is rounded up to a multiple of 2MB.

v2 -> v3:
- refine mmap_hugetlbfs* to reduce code replication

v1 -> v2:
- make this code generic instead of OVMF-specific

Tracked-On: #1832
Signed-off-by: Peter Fang <peter.fang@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>

2018-12-13 09:56:09 +08:00

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