memblock_cap_memory_range
memblock_cap_memory_range(0, 1UL << (H_MAX_PHYSMEM_BITS));
memblock_cap_memory_range(phys_ram_base,
memblock_cap_memory_range(rgn[0].base, rgn[0].size);
void memblock_cap_memory_range(phys_addr_t base, phys_addr_t size);
memblock_cap_memory_range(0, max_addr);