diff --git a/arch/mips/alchemy/db1x00/init.c b/arch/mips/alchemy/db1x00/init.c
index 8474135..d91d334 100644
--- a/arch/mips/alchemy/db1x00/init.c
+++ b/arch/mips/alchemy/db1x00/init.c
@@ -57,6 +57,6 @@
 	if (!memsize_str)
 		memsize = 0x04000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/mtx-1/init.c b/arch/mips/alchemy/mtx-1/init.c
index 3bae13c..5e871c8 100644
--- a/arch/mips/alchemy/mtx-1/init.c
+++ b/arch/mips/alchemy/mtx-1/init.c
@@ -55,6 +55,6 @@
 	if (!memsize_str)
 		memsize = 0x04000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/pb1000/init.c b/arch/mips/alchemy/pb1000/init.c
index 8a9c7d5..640055b 100644
--- a/arch/mips/alchemy/pb1000/init.c
+++ b/arch/mips/alchemy/pb1000/init.c
@@ -52,6 +52,6 @@
 	if (!memsize_str)
 		memsize = 0x04000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/pb1100/init.c b/arch/mips/alchemy/pb1100/init.c
index 7c67923..d34fbd8 100644
--- a/arch/mips/alchemy/pb1100/init.c
+++ b/arch/mips/alchemy/pb1100/init.c
@@ -54,7 +54,7 @@
 	if (!memsize_str)
 		memsize = 0x04000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/pb1200/init.c b/arch/mips/alchemy/pb1200/init.c
index e9b2a0f..edd9425 100644
--- a/arch/mips/alchemy/pb1200/init.c
+++ b/arch/mips/alchemy/pb1200/init.c
@@ -53,6 +53,6 @@
 	if (!memsize_str)
 		memsize = 0x08000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/pb1500/init.c b/arch/mips/alchemy/pb1500/init.c
index 3b6e395..b73343b 100644
--- a/arch/mips/alchemy/pb1500/init.c
+++ b/arch/mips/alchemy/pb1500/init.c
@@ -53,6 +53,6 @@
 	if (!memsize_str)
 		memsize = 0x04000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/pb1550/init.c b/arch/mips/alchemy/pb1550/init.c
index e1055a1..11e7f4a 100644
--- a/arch/mips/alchemy/pb1550/init.c
+++ b/arch/mips/alchemy/pb1550/init.c
@@ -53,6 +53,6 @@
 	if (!memsize_str)
 		memsize = 0x08000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/xxs1500/init.c b/arch/mips/alchemy/xxs1500/init.c
index 7516434..456fa14 100644
--- a/arch/mips/alchemy/xxs1500/init.c
+++ b/arch/mips/alchemy/xxs1500/init.c
@@ -53,6 +53,6 @@
 	if (!memsize_str)
 		memsize = 0x04000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }