diff --git a/Targets/Bonito3aserver/Bonito/tgt_machdep.c b/Targets/Bonito3aserver/Bonito/tgt_machdep.c
index 546e99a2..0d40246c 100644
--- a/Targets/Bonito3aserver/Bonito/tgt_machdep.c
+++ b/Targets/Bonito3aserver/Bonito/tgt_machdep.c
@@ -3103,8 +3103,8 @@ struct efi_memory_map_loongson * init_memory_map()
  		EMAP_ENTRY(i, 0, SYSTEM_RAM_HIGH, 0x90000000, 0x6f0);
 
 	if(memorysize_high_n1) {
- 		EMAP_ENTRY(i, 1, SYSTEM_RAM_LOW, 0x100000000000L, 0x100);
- 		EMAP_ENTRY(i, 1, SYSTEM_RAM_HIGH, 0x100000000000L + 0x90000000, memorysize_high_n1 >> 20);
+ 		EMAP_ENTRY(i, 1, SYSTEM_RAM_LOW, 0x00000000000L, 0x100);
+ 		EMAP_ENTRY(i, 1, SYSTEM_RAM_HIGH, 0x00000000000L + 0x90000000, memorysize_high_n1 >> 20);
 	}
 
 
diff --git a/Targets/Bonito3c780e/Bonito/tgt_machdep.c b/Targets/Bonito3c780e/Bonito/tgt_machdep.c
index c7f4eb55..eda29f8f 100644
--- a/Targets/Bonito3c780e/Bonito/tgt_machdep.c
+++ b/Targets/Bonito3c780e/Bonito/tgt_machdep.c
@@ -3197,8 +3197,8 @@ struct efi_memory_map_loongson * init_memory_map()
  		EMAP_ENTRY(i, 0, SYSTEM_RAM_HIGH, 0x90000000, 0x6f0);
 
 	if(memorysize_high_n1) {
- 		EMAP_ENTRY(i, 1, SYSTEM_RAM_LOW, 0x100000000000L, 0x100);
- 		EMAP_ENTRY(i, 1, SYSTEM_RAM_HIGH, 0x100000000000L + 0x90000000, memorysize_high_n1 >> 20);
+ 		EMAP_ENTRY(i, 1, SYSTEM_RAM_LOW, 0x000000000000L, 0x100);
+ 		EMAP_ENTRY(i, 1, SYSTEM_RAM_HIGH, 0x000000000000L + 0x90000000, memorysize_high_n1 >> 20);
 	}
 
 
diff --git a/Targets/Bonito3cserver/Bonito/tgt_machdep.c b/Targets/Bonito3cserver/Bonito/tgt_machdep.c
index d745a4ab..468f3583 100644
--- a/Targets/Bonito3cserver/Bonito/tgt_machdep.c
+++ b/Targets/Bonito3cserver/Bonito/tgt_machdep.c
@@ -3117,16 +3117,16 @@ struct efi_memory_map_loongson * init_memory_map()
 		EMAP_ENTRY(i, 0, SYSTEM_RAM_HIGH, 0x90000000, 0x6f0);
 
 	if(memorysize_high_n1) {
-		EMAP_ENTRY(i, 1, SYSTEM_RAM_LOW, 0x100000000000L, 0x100);
-		EMAP_ENTRY(i, 1, 2, 0x100000000000L + 0x90000000, memorysize_high_n1 >> 20);
+		EMAP_ENTRY(i, 1, SYSTEM_RAM_LOW, 0x000000000000L, 0x100);
+		EMAP_ENTRY(i, 1, 2, 0x000000000000L + 0x90000000, memorysize_high_n1 >> 20);
 	}
 	if(memorysize_high_n2) {
-		EMAP_ENTRY(i, 2, SYSTEM_RAM_LOW, 0x200000000000L, 0x100);
-		EMAP_ENTRY(i, 2, SYSTEM_RAM_HIGH, 0x200000000000L + 0x90000000, memorysize_high_n1 >> 20);
+		EMAP_ENTRY(i, 2, SYSTEM_RAM_LOW, 0x000000000000L, 0x100);
+		EMAP_ENTRY(i, 2, SYSTEM_RAM_HIGH, 0x000000000000L + 0x90000000, memorysize_high_n1 >> 20);
 	}
 	if(memorysize_high_n3) {
-		EMAP_ENTRY(i, 3, SYSTEM_RAM_LOW, 0x300000000000L, 0x100);
-		EMAP_ENTRY(i, 3, SYSTEM_RAM_HIGH, 0x300000000000L + 0x90000000, memorysize_high_n1 >> 20);
+		EMAP_ENTRY(i, 3, SYSTEM_RAM_LOW, 0x000000000000L, 0x100);
+		EMAP_ENTRY(i, 3, SYSTEM_RAM_HIGH, 0x000000000000L + 0x90000000, memorysize_high_n1 >> 20);
 	}
 
 	emap->vers = 1;