Rebecca Cran ce37b71e68 Add retry loop around GetMemoryMap call to fix fragmentation bug
The call to BS->AllocatePages can cause the memory map to become framented,
causing BS->GetMemoryMap to return EFI_BUFFER_TOO_SMALL more than once. For
example this can happen on the MinnowBoard Turbot, causing the boot to stop
with an error. Avoid this by calling GetMemoryMap in a loop.

Reviewed by:	imp, tsoome, kevans
Differential Revision:	https://reviews.freebsd.org/D19341
2019-03-06 05:39:40 +00:00
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