diff --git a/arch/x86/cpu/coreboot/sdram.c b/arch/x86/cpu/coreboot/sdram.c
index 82407af..05918bc 100644
--- a/arch/x86/cpu/coreboot/sdram.c
+++ b/arch/x86/cpu/coreboot/sdram.c
@@ -12,12 +12,13 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
+unsigned int install_e820_map(unsigned int max_entries,
+			      struct e820entry *entries)
 {
-	unsigned num_entries;
+	unsigned int num_entries;
 	int i;
 
-	num_entries = min((unsigned)lib_sysinfo.n_memranges, max_entries);
+	num_entries = min((unsigned int)lib_sysinfo.n_memranges, max_entries);
 	if (num_entries < lib_sysinfo.n_memranges) {
 		printf("Warning: Limiting e820 map to %d entries.\n",
 			num_entries);
diff --git a/arch/x86/cpu/qemu/e820.c b/arch/x86/cpu/qemu/e820.c
index c1c9b89..11409dd 100644
--- a/arch/x86/cpu/qemu/e820.c
+++ b/arch/x86/cpu/qemu/e820.c
@@ -9,7 +9,8 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
+unsigned int install_e820_map(unsigned int max_entries,
+			      struct e820entry *entries)
 {
 	entries[0].addr = 0;
 	entries[0].size = ISA_START_ADDRESS;
diff --git a/arch/x86/cpu/tangier/sdram.c b/arch/x86/cpu/tangier/sdram.c
index eae8d78..daa9909 100644
--- a/arch/x86/cpu/tangier/sdram.c
+++ b/arch/x86/cpu/tangier/sdram.c
@@ -99,7 +99,8 @@
 	     i < SFI_GET_NUM_ENTRIES(sb, struct sfi_mem_entry);		\
 	     i++, mentry++)						\
 
-static unsigned sfi_setup_e820(unsigned max_entries, struct e820entry *entries)
+static unsigned int sfi_setup_e820(unsigned int max_entries,
+				   struct e820entry *entries)
 {
 	struct sfi_table_simple *sb;
 	struct sfi_mem_entry *mentry;
@@ -188,7 +189,8 @@
 	return ram;
 }
 
-unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
+unsigned int install_e820_map(unsigned int max_entries,
+			      struct e820entry *entries)
 {
 	return sfi_setup_e820(max_entries, entries);
 }
diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h
index 351f021..8355c34 100644
--- a/arch/x86/include/asm/e820.h
+++ b/arch/x86/include/asm/e820.h
@@ -24,6 +24,7 @@
 #endif /* __ASSEMBLY__ */
 
 /* Implementation defined function to install an e820 map */
-unsigned install_e820_map(unsigned max_entries, struct e820entry *);
+unsigned int install_e820_map(unsigned int max_entries,
+			      struct e820entry *);
 
 #endif /* _ASM_X86_E820_H */
diff --git a/arch/x86/lib/e820.c b/arch/x86/lib/e820.c
index 5babfde..c2595b1 100644
--- a/arch/x86/lib/e820.c
+++ b/arch/x86/lib/e820.c
@@ -17,8 +17,8 @@
  *	0x100000-gd->ram_size	Useable RAM
  *	CONFIG_PCIE_ECAM_BASE	PCIe ECAM
  */
-__weak unsigned install_e820_map(unsigned max_entries,
-				 struct e820entry *entries)
+__weak unsigned int install_e820_map(unsigned int max_entries,
+				     struct e820entry *entries)
 {
 	entries[0].addr = 0;
 	entries[0].size = ISA_START_ADDRESS;
diff --git a/arch/x86/lib/fsp/fsp_dram.c b/arch/x86/lib/fsp/fsp_dram.c
index 1a7af57..c1c6c54 100644
--- a/arch/x86/lib/fsp/fsp_dram.c
+++ b/arch/x86/lib/fsp/fsp_dram.c
@@ -62,9 +62,10 @@
 	return fsp_get_usable_lowmem_top(gd->arch.hob_list);
 }
 
-unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
+unsigned int install_e820_map(unsigned int max_entries,
+			      struct e820entry *entries)
 {
-	unsigned num_entries = 0;
+	unsigned int num_entries = 0;
 	const struct hob_header *hdr;
 	struct hob_res_desc *res_desc;