coreboot
coreboot is an Open Source project aimed at replacing the proprietary BIOS found in most computers.
cbmem.c
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1 /* SPDX-License-Identifier: GPL-2.0-only */
2 
3 #include <cbmem.h>
4 
5 void *cbmem_top_chipset(void)
6 {
7  /* Top of cbmem is at lowest usable DRAM address below 4GiB. */
8  /* For now, last 1M of 4G */
9  void *ptr = (void *) ((1ULL << 32) - 1048576);
10  return ptr;
11 }
void * cbmem_top_chipset(void)
Definition: cbmem.c:6