src/include/ramdetect.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <stdint.h>
   4 #include <stddef.h>
   5
   6 /*
   7  * Used in probe_ramsize(). This is a weak function and it's overridden for
   8  * ARMv8. Return 1 when DRAM exists at the address, otherwise return 0.
   9  */
  10 int probe_mb(const uintptr_t dram_start, const uintptr_t size);
  11 /*
  12  * Probe an area if it's read/writable.
  13  * Primary use case is the detection of DRAM amount on emulators.
  14  *
  15  * @param dram_start Physical address of DRAM start
  16  * @param probe_size Maximum size in MiB to probe for
  17  * @return The detected DRAM size in MiB
  18  */
  19 size_t probe_ramsize(const uintptr_t dram_start, const size_t probe_size);