Comment # 23 on bug 1122614 from Gary Ching-Pang Lin

Just checked the u-boot code, it always marks the first page as WB and RESERVED
for its own spin table.

Maybe we can change the logic of get_dram_base() in kernel from

if (md->attribute & EFI_MEMORY_WB) {

to

if (md->attribute & EFI_MEMORY_WB &&
    md->type == EFI_CONVENTIONAL_MEMORY) {

This way, get_dram_base() will always find the first free region.