diff --git a/arch/x86/cpu/irq.c b/arch/x86/cpu/irq.c
index 9364410..e3e928b 100644
--- a/arch/x86/cpu/irq.c
+++ b/arch/x86/cpu/irq.c
@@ -264,7 +264,7 @@ int irq_router_probe(struct udevice *dev)
 	return irq_router_common_init(dev);
 }
 
-u32 write_pirq_routing_table(u32 addr)
+ulong write_pirq_routing_table(ulong addr)
 {
 	if (!pirq_routing_table)
 		return addr;
diff --git a/arch/x86/include/asm/acpi_table.h b/arch/x86/include/asm/acpi_table.h
index caff4d8..bbd80a1 100644
--- a/arch/x86/include/asm/acpi_table.h
+++ b/arch/x86/include/asm/acpi_table.h
@@ -316,4 +316,4 @@ int acpi_create_madt_lapic_nmi(struct acpi_madt_lapic_nmi *lapic_nmi,
 			       u8 cpu, u16 flags, u8 lint);
 u32 acpi_fill_madt(u32 current);
 void acpi_create_gnvs(struct acpi_global_nvs *gnvs);
-u32 write_acpi_tables(u32 start);
+ulong write_acpi_tables(ulong start);
diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h
index ad8eba9..146a4b0 100644
--- a/arch/x86/include/asm/mpspec.h
+++ b/arch/x86/include/asm/mpspec.h
@@ -456,6 +456,6 @@ int mp_determine_pci_dstirq(int bus, int dev, int func, int pirq);
  * @addr:	start address to write MP table
  * @return:	end address of MP table
  */
-u32 write_mp_table(u32 addr);
+ulong write_mp_table(ulong addr);
 
 #endif /* __ASM_MPSPEC_H */
diff --git a/arch/x86/include/asm/sfi.h b/arch/x86/include/asm/sfi.h
index d1f0f0c..d6c44c9 100644
--- a/arch/x86/include/asm/sfi.h
+++ b/arch/x86/include/asm/sfi.h
@@ -132,6 +132,6 @@ typedef int (*sfi_table_handler) (struct sfi_table_header *table);
  * @base:	Address to write table to
  * @return address to use for the next table
  */
-u32 write_sfi_table(u32 base);
+ulong write_sfi_table(ulong base);
 
 #endif /*_LINUX_SFI_H */
diff --git a/arch/x86/include/asm/tables.h b/arch/x86/include/asm/tables.h
index 81f98f2..d1b2388 100644
--- a/arch/x86/include/asm/tables.h
+++ b/arch/x86/include/asm/tables.h
@@ -65,6 +65,6 @@ void write_tables(void);
  * @start:	start address to write PIRQ routing table
  * @return:	end address of PIRQ routing table
  */
-u32 write_pirq_routing_table(u32 start);
+ulong write_pirq_routing_table(ulong start);
 
 #endif /* _X86_TABLES_H_ */
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c
index 7001e8b..355456d 100644
--- a/arch/x86/lib/acpi_table.c
+++ b/arch/x86/lib/acpi_table.c
@@ -327,7 +327,7 @@ static void enter_acpi_mode(int pm1_cnt)
  * QEMU's version of write_acpi_tables is defined in
  * arch/x86/cpu/qemu/acpi_table.c
  */
-u32 write_acpi_tables(u32 start)
+ulong write_acpi_tables(ulong start)
 {
 	u32 current;
 	struct acpi_rsdp *rsdp;
@@ -345,7 +345,7 @@ u32 write_acpi_tables(u32 start)
 	/* Align ACPI tables to 16 byte */
 	current = ALIGN(current, 16);
 
-	debug("ACPI: Writing ACPI tables at %x\n", start);
+	debug("ACPI: Writing ACPI tables at %lx\n", start);
 
 	/* We need at least an RSDP and an RSDT Table */
 	rsdp = (struct acpi_rsdp *)current;
diff --git a/arch/x86/lib/mpspec.c b/arch/x86/lib/mpspec.c
index 6ab43f1..516d7b3 100644
--- a/arch/x86/lib/mpspec.c
+++ b/arch/x86/lib/mpspec.c
@@ -365,7 +365,7 @@ static void mptable_add_lintsrc(struct mp_config_table *mc, int bus_isa)
 			 bus_isa, 0, MP_APIC_ALL, 1);
 }
 
-u32 write_mp_table(u32 addr)
+ulong write_mp_table(ulong addr)
 {
 	struct mp_config_table *mc;
 	int ioapic_id, ioapic_ver;
diff --git a/arch/x86/lib/sfi.c b/arch/x86/lib/sfi.c
index 3d36580..507e037 100644
--- a/arch/x86/lib/sfi.c
+++ b/arch/x86/lib/sfi.c
@@ -38,14 +38,14 @@ static void *get_entry_start(struct table_info *tab)
 	tab->table[tab->count] = tab->entry_start;
 	tab->entry_start += sizeof(struct sfi_table_header);
 
-	return (void *)tab->entry_start;
+	return (void *)(uintptr_t)tab->entry_start;
 }
 
 static void finish_table(struct table_info *tab, const char *sig, void *entry)
 {
 	struct sfi_table_header *hdr;
 
-	hdr = (struct sfi_table_header *)(tab->base + tab->ptr);
+	hdr = (struct sfi_table_header *)(uintptr_t)(tab->base + tab->ptr);
 	strcpy(hdr->sig, sig);
 	hdr->len = sizeof(*hdr) + ((ulong)entry - tab->entry_start);
 	hdr->rev = 1;
@@ -131,7 +131,7 @@ static int sfi_write_xsdt(struct table_info *tab)
 	return 0;
 }
 
-u32 write_sfi_table(u32 base)
+ulong write_sfi_table(ulong base)
 {
 	struct table_info table;
 
diff --git a/arch/x86/lib/tables.c b/arch/x86/lib/tables.c
index 5966e58..4f5fe74 100644
--- a/arch/x86/lib/tables.c
+++ b/arch/x86/lib/tables.c
@@ -12,20 +12,13 @@
 #include <asm/acpi_table.h>
 #include <asm/coreboot_tables.h>
 
-#ifdef CONFIG_GENERATE_SMBIOS_TABLE
-static u32 write_smbios_table_wrapper(u32 addr)
-{
-	return write_smbios_table(addr);
-}
-#endif
-
 /**
  * Function prototype to write a specific configuration table
  *
  * @addr:	start address to write the table
  * @return:	end address of the table
  */
-typedef u32 (*table_write)(u32 addr);
+typedef ulong (*table_write)(ulong addr);
 
 static table_write table_write_funcs[] = {
 #ifdef CONFIG_GENERATE_PIRQ_TABLE
@@ -41,7 +34,7 @@ static table_write table_write_funcs[] = {
 	write_acpi_tables,
 #endif
 #ifdef CONFIG_GENERATE_SMBIOS_TABLE
-	write_smbios_table_wrapper,
+	write_smbios_table,
 #endif
 };
 
diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c
index 1b33c77..b6b0f2b 100644
--- a/arch/x86/lib/zimage.c
+++ b/arch/x86/lib/zimage.c
@@ -165,7 +165,7 @@ struct boot_params *load_zimage(char *image, unsigned long kernel_size,
 		 * A very old kernel MUST have its real-mode code
 		 * loaded at 0x90000
 		 */
-		if ((u32)setup_base != 0x90000) {
+		if ((ulong)setup_base != 0x90000) {
 			/* Copy the real-mode kernel */
 			memmove((void *)0x90000, setup_base, setup_size);
 
diff --git a/drivers/misc/qfw.c b/drivers/misc/qfw.c
index d43d1d3..a8af9e0 100644
--- a/drivers/misc/qfw.c
+++ b/drivers/misc/qfw.c
@@ -32,7 +32,7 @@ static LIST_HEAD(fw_list);
  *          be ignored.
  * @return: 0 on success, or negative value on failure
  */
-static int bios_linker_allocate(struct bios_linker_entry *entry, u32 *addr)
+static int bios_linker_allocate(struct bios_linker_entry *entry, ulong *addr)
 {
 	uint32_t size, align;
 	struct fw_file *file;
@@ -147,7 +147,7 @@ static int bios_linker_add_checksum(struct bios_linker_entry *entry)
 }
 
 /* This function loads and patches ACPI tables provided by QEMU */
-u32 write_acpi_tables(u32 addr)
+ulong write_acpi_tables(ulong addr)
 {
 	int i, ret = 0;
 	struct fw_file *file;
diff --git a/include/smbios.h b/include/smbios.h
index d582d4f..c24d00e 100644
--- a/include/smbios.h
+++ b/include/smbios.h
@@ -225,7 +225,7 @@ static inline void fill_smbios_header(void *table, int type,
  * @handle:	the structure's handle, a unique 16-bit number
  * @return:	size of the structure
  */
-typedef int (*smbios_write_type)(uintptr_t *addr, int handle);
+typedef int (*smbios_write_type)(ulong *addr, int handle);
 
 /**
  * write_smbios_table() - Write SMBIOS table
@@ -235,6 +235,6 @@ typedef int (*smbios_write_type)(uintptr_t *addr, int handle);
  * @addr:	start address to write SMBIOS table
  * @return:	end address of SMBIOS table
  */
-uintptr_t write_smbios_table(uintptr_t addr);
+ulong write_smbios_table(ulong addr);
 
 #endif /* _SMBIOS_H_ */
diff --git a/lib/smbios.c b/lib/smbios.c
index ce1974d..22ca247 100644
--- a/lib/smbios.c
+++ b/lib/smbios.c
@@ -73,7 +73,7 @@ static int smbios_string_table_len(char *start)
 	return len + 1;
 }
 
-static int smbios_write_type0(uintptr_t *current, int handle)
+static int smbios_write_type0(ulong *current, int handle)
 {
 	struct smbios_type0 *t = (struct smbios_type0 *)*current;
 	int len = sizeof(struct smbios_type0);
@@ -108,7 +108,7 @@ static int smbios_write_type0(uintptr_t *current, int handle)
 	return len;
 }
 
-static int smbios_write_type1(uintptr_t *current, int handle)
+static int smbios_write_type1(ulong *current, int handle)
 {
 	struct smbios_type1 *t = (struct smbios_type1 *)*current;
 	int len = sizeof(struct smbios_type1);
@@ -129,7 +129,7 @@ static int smbios_write_type1(uintptr_t *current, int handle)
 	return len;
 }
 
-static int smbios_write_type2(uintptr_t *current, int handle)
+static int smbios_write_type2(ulong *current, int handle)
 {
 	struct smbios_type2 *t = (struct smbios_type2 *)*current;
 	int len = sizeof(struct smbios_type2);
@@ -147,7 +147,7 @@ static int smbios_write_type2(uintptr_t *current, int handle)
 	return len;
 }
 
-static int smbios_write_type3(uintptr_t *current, int handle)
+static int smbios_write_type3(ulong *current, int handle)
 {
 	struct smbios_type3 *t = (struct smbios_type3 *)*current;
 	int len = sizeof(struct smbios_type3);
@@ -199,7 +199,7 @@ static void smbios_write_type4_dm(struct smbios_type4 *t)
 	t->processor_version = smbios_add_string(t->eos, name);
 }
 
-static int smbios_write_type4(uintptr_t *current, int handle)
+static int smbios_write_type4(ulong *current, int handle)
 {
 	struct smbios_type4 *t = (struct smbios_type4 *)*current;
 	int len = sizeof(struct smbios_type4);
@@ -221,7 +221,7 @@ static int smbios_write_type4(uintptr_t *current, int handle)
 	return len;
 }
 
-static int smbios_write_type32(uintptr_t *current, int handle)
+static int smbios_write_type32(ulong *current, int handle)
 {
 	struct smbios_type32 *t = (struct smbios_type32 *)*current;
 	int len = sizeof(struct smbios_type32);
@@ -234,7 +234,7 @@ static int smbios_write_type32(uintptr_t *current, int handle)
 	return len;
 }
 
-static int smbios_write_type127(uintptr_t *current, int handle)
+static int smbios_write_type127(ulong *current, int handle)
 {
 	struct smbios_type127 *t = (struct smbios_type127 *)*current;
 	int len = sizeof(struct smbios_type127);
@@ -257,10 +257,10 @@ static smbios_write_type smbios_write_funcs[] = {
 	smbios_write_type127
 };
 
-uintptr_t write_smbios_table(uintptr_t addr)
+ulong write_smbios_table(ulong addr)
 {
 	struct smbios_entry *se;
-	u32 tables;
+	ulong tables;
 	int len = 0;
 	int max_struct_size = 0;
 	int handle = 0;
@@ -271,7 +271,7 @@ uintptr_t write_smbios_table(uintptr_t addr)
 	/* 16 byte align the table address */
 	addr = ALIGN(addr, 16);
 
-	se = (struct smbios_entry *)addr;
+	se = (struct smbios_entry *)(uintptr_t)addr;
 	memset(se, 0, sizeof(struct smbios_entry));
 
 	addr += sizeof(struct smbios_entry);
@@ -280,7 +280,7 @@ uintptr_t write_smbios_table(uintptr_t addr)
 
 	/* populate minimum required tables */
 	for (i = 0; i < ARRAY_SIZE(smbios_write_funcs); i++) {
-		int tmp = smbios_write_funcs[i](&addr, handle++);
+		int tmp = smbios_write_funcs[i]((ulong *)&addr, handle++);
 		max_struct_size = max(max_struct_size, tmp);
 		len += tmp;
 	}