1  /* SPDX-License-Identifier: GPL-2.0-or-later */
 2  
 3  #include <cbmem.h>
 4  #include <ramdetect.h>
 5  #include <symbols.h>
 6  #include <commonlib/device_tree.h>
 7  
 8  DECLARE_REGION(fdt)
 9  uintptr_t cbmem_top_chipset(void)
10  {
11  	uint64_t top;
12  
13  	top = fdt_get_memory_top((void *)_fdt);
14  	if (top)
15  		return MIN(top, (uint64_t)4 * GiB - 1);
16  
17  	return (uintptr_t)_dram + (probe_ramsize((uintptr_t)_dram, CONFIG_DRAM_SIZE_MB) * MiB);
18  }