When phys_addr_t is 32 bits wide, boot_fdt_add_mem_rsv_regions() implicitly 
uses only the low 32 bits of each memory reservation's address and length to 
determine what to reserve. So, for example, an FDT memory reservation like

/memreserve/ 0x180000000 0x40000000;

will actually reserve physical memory starting at 0x80000000, not 0x180000000 
(though the printf() will claim it is reserving starting at 0x180000000).

Dan

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