Memory Map¶
SBL internal memory map layout (BootloaderCoreLib.h
):
Reserved MEM
+------------------------------+ Top of Low MEM
| SOC Reserved MEM |
+------------------------------+ Top of usable MEM Base
| FSP Reserved MEM |
+------------------------------+ FSP Reserved MEM Base
| LDR Reserved MEM |
+------------------------------+ LDR Reserved MEM Base
| ACPI NVS MEM |
+------------------------------+ ACPI NVS MEM Base
| ACPI Reclaim MEM |
+------------------------------+ ACPI Reclaim MEM Base
| PLD Reserved MEM |
+------------------------------+ PLD Reserved MEM Base
Loader Reserved MEM
+------------------------------+ StackTop
| LDR Stack (Down) |
| |
| LDR HOB (Up) |
+------------------------------+ MemPoolEnd (Fixed)
| |
| Permanent MEM Pool (Down) |
| |
+------------------------------+ MemPoolCurrTop (Moving down)
| |
+------------------------------+ MemPoolCurrBottom (Moving up)
| |
| Temporary MEM Pool (Up) |
| |
+------------------------------+ MemPoolStart (Fixed)