diff --git a/drivers/dfu/dfu_mtd.c b/drivers/dfu/dfu_mtd.c
index 894b570..a31d480 100644
--- a/drivers/dfu/dfu_mtd.c
+++ b/drivers/dfu/dfu_mtd.c
@@ -268,9 +268,9 @@
 	st = strsep(&s, " ");
 	if (!strcmp(st, "raw")) {
 		dfu->layout = DFU_RAW_ADDR;
-		dfu->data.mtd.start = simple_strtoul(s, &s, 16);
+		dfu->data.mtd.start = hextoul(s, &s);
 		s++;
-		dfu->data.mtd.size = simple_strtoul(s, &s, 16);
+		dfu->data.mtd.size = hextoul(s, &s);
 	} else if ((!strcmp(st, "part")) || (!strcmp(st, "partubi"))) {
 		char mtd_id[32];
 		struct mtd_device *mtd_dev;
diff --git a/drivers/dfu/dfu_nand.c b/drivers/dfu/dfu_nand.c
index b8d24d2..6ddf80b 100644
--- a/drivers/dfu/dfu_nand.c
+++ b/drivers/dfu/dfu_nand.c
@@ -204,9 +204,9 @@
 	st = strsep(&s, " ");
 	if (!strcmp(st, "raw")) {
 		dfu->layout = DFU_RAW_ADDR;
-		dfu->data.nand.start = simple_strtoul(s, &s, 16);
+		dfu->data.nand.start = hextoul(s, &s);
 		s++;
-		dfu->data.nand.size = simple_strtoul(s, &s, 16);
+		dfu->data.nand.size = hextoul(s, &s);
 	} else if ((!strcmp(st, "part")) || (!strcmp(st, "partubi"))) {
 		char mtd_id[32];
 		struct mtd_device *mtd_dev;
diff --git a/drivers/dfu/dfu_ram.c b/drivers/dfu/dfu_ram.c
index ab0ce9e..cc7e45b 100644
--- a/drivers/dfu/dfu_ram.c
+++ b/drivers/dfu/dfu_ram.c
@@ -74,8 +74,8 @@
 	}
 
 	dfu->layout = DFU_RAM_ADDR;
-	dfu->data.ram.start = simple_strtoul(argv[1], NULL, 16);
-	dfu->data.ram.size = simple_strtoul(argv[2], NULL, 16);
+	dfu->data.ram.start = hextoul(argv[1], NULL);
+	dfu->data.ram.size = hextoul(argv[2], NULL);
 
 	dfu->write_medium = dfu_write_medium_ram;
 	dfu->get_medium_size = dfu_get_medium_size_ram;
diff --git a/drivers/dfu/dfu_sf.c b/drivers/dfu/dfu_sf.c
index 8f8c425..ef52319 100644
--- a/drivers/dfu/dfu_sf.c
+++ b/drivers/dfu/dfu_sf.c
@@ -171,9 +171,9 @@
 	st = strsep(&s, " ");
 	if (!strcmp(st, "raw")) {
 		dfu->layout = DFU_RAW_ADDR;
-		dfu->data.sf.start = simple_strtoul(s, &s, 16);
+		dfu->data.sf.start = hextoul(s, &s);
 		s++;
-		dfu->data.sf.size = simple_strtoul(s, &s, 16);
+		dfu->data.sf.size = hextoul(s, &s);
 	} else if (CONFIG_IS_ENABLED(DFU_SF_PART) &&
 		   (!strcmp(st, "part") || !strcmp(st, "partubi"))) {
 		char mtd_id[32];
diff --git a/drivers/fastboot/fb_command.c b/drivers/fastboot/fb_command.c
index 3a5db5b..98eccc3 100644
--- a/drivers/fastboot/fb_command.c
+++ b/drivers/fastboot/fb_command.c
@@ -208,7 +208,7 @@
 		return;
 	}
 	fastboot_bytes_received = 0;
-	fastboot_bytes_expected = simple_strtoul(cmd_parameter, &tmp, 16);
+	fastboot_bytes_expected = hextoul(cmd_parameter, &tmp);
 	if (fastboot_bytes_expected == 0) {
 		fastboot_fail("Expected nonzero image size", response);
 		return;
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index 4ab8cee..2fd2996 100644
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -221,11 +221,11 @@
 
 	/* arg2 used as chip number or pin number */
 	if (argc > 2)
-		ul_arg2 = simple_strtoul(argv[2], NULL, 16);
+		ul_arg2 = hextoul(argv[2], NULL);
 
 	/* arg3 used as pin or invert value */
 	if (argc > 3)
-		ul_arg3 = simple_strtoul(argv[3], NULL, 16) & 0x1;
+		ul_arg3 = hextoul(argv[3], NULL) & 0x1;
 
 	switch ((long)c->cmd) {
 	case PCA953X_CMD_INFO:
diff --git a/drivers/misc/ds4510.c b/drivers/misc/ds4510.c
index a2a5291..9340596 100644
--- a/drivers/misc/ds4510.c
+++ b/drivers/misc/ds4510.c
@@ -271,11 +271,11 @@
 
 	/* arg2 used as chip addr and pin number */
 	if (argc > 2)
-		ul_arg2 = simple_strtoul(argv[2], NULL, 16);
+		ul_arg2 = hextoul(argv[2], NULL);
 
 	/* arg3 used as output/pullup value */
 	if (argc > 3)
-		ul_arg3 = simple_strtoul(argv[3], NULL, 16);
+		ul_arg3 = hextoul(argv[3], NULL);
 
 	switch ((int)c->cmd) {
 	case DS4510_CMD_DEVICE:
@@ -337,9 +337,9 @@
 	else
 		return cmd_usage(cmdtp);
 
-	addr = simple_strtoul(argv[3], NULL, 16);
-	off += simple_strtoul(argv[4], NULL, 16);
-	cnt = simple_strtoul(argv[5], NULL, 16);
+	addr = hextoul(argv[3], NULL);
+	off += hextoul(argv[4], NULL);
+	cnt = hextoul(argv[5], NULL);
 
 	if ((off + cnt) > end) {
 		printf("ERROR: invalid len\n");
diff --git a/drivers/net/e1000_spi.c b/drivers/net/e1000_spi.c
index 4fcc65d..69adf28 100644
--- a/drivers/net/e1000_spi.c
+++ b/drivers/net/e1000_spi.c
@@ -399,7 +399,7 @@
 	}
 
 	/* Parse the arguments */
-	dest = (void *)simple_strtoul(argv[0], NULL, 16);
+	dest = (void *)hextoul(argv[0], NULL);
 	offset = simple_strtoul(argv[1], NULL, 0);
 	length = simple_strtoul(argv[2], NULL, 0);
 
@@ -444,7 +444,7 @@
 	}
 
 	/* Parse the arguments */
-	source = (const void *)simple_strtoul(argv[0], NULL, 16);
+	source = (const void *)hextoul(argv[0], NULL);
 	offset = simple_strtoul(argv[1], NULL, 0);
 	length = simple_strtoul(argv[2], NULL, 0);
 
diff --git a/drivers/net/fm/fdt.c b/drivers/net/fm/fdt.c
index 242d27a..3855d7d 100644
--- a/drivers/net/fm/fdt.c
+++ b/drivers/net/fm/fdt.c
@@ -42,7 +42,7 @@
 	if (!p)
 		return;
 
-	fmanfw = (struct qe_firmware *)simple_strtoul(p, NULL, 16);
+	fmanfw = (struct qe_firmware *)hextoul(p, NULL);
 	if (!fmanfw)
 		return;
 
diff --git a/drivers/net/fsl-mc/mc.c b/drivers/net/fsl-mc/mc.c
index 914ec00..3712221 100644
--- a/drivers/net/fsl-mc/mc.c
+++ b/drivers/net/fsl-mc/mc.c
@@ -956,8 +956,7 @@
 	char *dram_block_size_env_var = env_get(MC_MEM_SIZE_ENV_VAR);
 
 	if (dram_block_size_env_var) {
-		dram_block_size = simple_strtoul(dram_block_size_env_var, NULL,
-						 16);
+		dram_block_size = hextoul(dram_block_size_env_var, NULL);
 
 		if (dram_block_size < CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE) {
 			printf("fsl-mc: WARNING: Invalid value for \'"
diff --git a/drivers/net/pfe_eth/pfe_cmd.c b/drivers/net/pfe_eth/pfe_cmd.c
index 364750f..2fe0db0 100644
--- a/drivers/net/pfe_eth/pfe_cmd.c
+++ b/drivers/net/pfe_eth/pfe_cmd.c
@@ -41,7 +41,7 @@
 			}
 
 			id = simple_strtoul(argv[4], NULL, 0);
-			addr = simple_strtoul(argv[5], NULL, 16);
+			addr = hextoul(argv[5], NULL);
 			size = 4;
 
 			for (i = 0; i < num; i++, addr += 4) {
@@ -75,7 +75,7 @@
 			}
 
 			id = simple_strtoul(argv[4], NULL, 0);
-			addr = simple_strtoul(argv[5], NULL, 16);
+			addr = hextoul(argv[5], NULL);
 			size = 4;
 
 			for (i = 0; i < num; i++, addr += 4) {
@@ -99,9 +99,9 @@
 			}
 
 			id = simple_strtoul(argv[4], NULL, 0);
-			val = simple_strtoul(argv[5], NULL, 16);
+			val = hextoul(argv[5], NULL);
 			val = cpu_to_be32(val);
-			addr = simple_strtoul(argv[6], NULL, 16);
+			addr = hextoul(argv[6], NULL);
 			size = 4;
 			pe_dmem_write(id, val, addr, size);
 		} else {
@@ -123,7 +123,7 @@
 				return;
 			}
 
-			offset = simple_strtoul(argv[4], NULL, 16);
+			offset = hextoul(argv[4], NULL);
 
 			for (i = 0; i < num; i++, offset += 4) {
 				pe_lmem_read(&val, 4, offset);
@@ -141,9 +141,9 @@
 				return;
 			}
 
-			val = simple_strtoul(argv[4], NULL, 16);
+			val = hextoul(argv[4], NULL);
 			val = cpu_to_be32(val);
-			offset = simple_strtoul(argv[5], NULL, 16);
+			offset = hextoul(argv[5], NULL);
 			pe_lmem_write(&val, 4, offset);
 		} else {
 			printf("Usage: pfe pe lmem [read | write] <parameters>\n");
diff --git a/drivers/net/phy/b53.c b/drivers/net/phy/b53.c
index 21da53c..695fac4 100644
--- a/drivers/net/phy/b53.c
+++ b/drivers/net/phy/b53.c
@@ -646,8 +646,8 @@
 		return ret;
 	}
 
-	page = simple_strtoul(argv[1], NULL, 16);
-	offset = simple_strtoul(argv[2], NULL, 16);
+	page = hextoul(argv[1], NULL);
+	offset = hextoul(argv[2], NULL);
 	width = simple_strtoul(argv[3], NULL, 10);
 
 	switch (width) {
@@ -698,13 +698,13 @@
 		return ret;
 	}
 
-	page = simple_strtoul(argv[1], NULL, 16);
-	offset = simple_strtoul(argv[2], NULL, 16);
+	page = hextoul(argv[1], NULL);
+	offset = hextoul(argv[2], NULL);
 	width = simple_strtoul(argv[3], NULL, 10);
 	if (width == 48 || width == 64)
 		value64 = simple_strtoull(argv[4], NULL, 16);
 	else
-		value = simple_strtoul(argv[4], NULL, 16);
+		value = hextoul(argv[4], NULL);
 
 	switch (width) {
 	case 8:
diff --git a/drivers/net/phy/mv88e6352.c b/drivers/net/phy/mv88e6352.c
index 62a7f19..07a8e50 100644
--- a/drivers/net/phy/mv88e6352.c
+++ b/drivers/net/phy/mv88e6352.c
@@ -256,7 +256,7 @@
 	phyaddr = simple_strtoul(argv[1], NULL, 10);
 	port = simple_strtoul(argv[2], NULL, 10);
 	reg = simple_strtoul(argv[3], NULL, 10);
-	value = simple_strtoul(argv[4], NULL, 16);
+	value = hextoul(argv[4], NULL);
 
 	ret = sw_reg_write(name, phyaddr, port, reg, value);
 
diff --git a/drivers/power/power_core.c b/drivers/power/power_core.c
index eeed8e2..4f7ba09 100644
--- a/drivers/power/power_core.c
+++ b/drivers/power/power_core.c
@@ -159,7 +159,7 @@
 		if (argc < 4)
 			return CMD_RET_USAGE;
 
-		reg = simple_strtoul(argv[3], NULL, 16);
+		reg = hextoul(argv[3], NULL);
 		ret = pmic_reg_read(p, reg, &val);
 
 		if (ret)
@@ -174,8 +174,8 @@
 		if (argc < 5)
 			return CMD_RET_USAGE;
 
-		reg = simple_strtoul(argv[3], NULL, 16);
-		val = simple_strtoul(argv[4], NULL, 16);
+		reg = hextoul(argv[3], NULL);
+		val = hextoul(argv[4], NULL);
 		pmic_reg_write(p, reg, val);
 
 		return CMD_RET_SUCCESS;
diff --git a/drivers/qe/qe.c b/drivers/qe/qe.c
index 97883ff..bd0a10c 100644
--- a/drivers/qe/qe.c
+++ b/drivers/qe/qe.c
@@ -794,7 +794,7 @@
 		return cmd_usage(cmdtp);
 
 	if (strcmp(argv[1], "fw") == 0) {
-		addr = simple_strtoul(argv[2], NULL, 16);
+		addr = hextoul(argv[2], NULL);
 
 		if (!addr) {
 			printf("Invalid address\n");
@@ -807,7 +807,7 @@
 		 */
 
 		if (argc > 3) {
-			ulong length = simple_strtoul(argv[3], NULL, 16);
+			ulong length = hextoul(argv[3], NULL);
 			struct qe_firmware *firmware = (void *)addr;
 
 			if (length != be32_to_cpu(firmware->header.length)) {
diff --git a/drivers/rtc/m41t60.c b/drivers/rtc/m41t60.c
index 692042b..b8ad33e 100644
--- a/drivers/rtc/m41t60.c
+++ b/drivers/rtc/m41t60.c
@@ -214,7 +214,7 @@
 	 * the M41T60 documentation for further details.
 	 */
 	if (s) {
-		unsigned long const l = simple_strtoul(s, 0, 16);
+		unsigned long const l = hextoul(s, 0);
 
 		if (l <= 0x3F) {
 			if ((data[RTC_CTRL] & 0x3F) != l) {
diff --git a/drivers/video/ati_radeon_fb.c b/drivers/video/ati_radeon_fb.c
index c4da2e3..3836667 100644
--- a/drivers/video/ati_radeon_fb.c
+++ b/drivers/video/ati_radeon_fb.c
@@ -642,7 +642,7 @@
 	if (penv) {
 		/* deceide if it is a string */
 		if (penv[0] <= '9') {
-			videomode = (int) simple_strtoul (penv, NULL, 16);
+			videomode = (int)hextoul(penv, NULL);
 			tmp = 1;
 		}
 	} else {
diff --git a/drivers/video/cfb_console.c b/drivers/video/cfb_console.c
index 1f491a4..5e1ee06 100644
--- a/drivers/video/cfb_console.c
+++ b/drivers/video/cfb_console.c
@@ -1857,7 +1857,7 @@
 		ret = splash_screen_prepare();
 		if (ret < 0)
 			return video_fb_address;
-		addr = simple_strtoul(s, NULL, 16);
+		addr = hextoul(s, NULL);
 
 		if (video_display_bitmap(addr,
 					video_logo_xpos,
diff --git a/drivers/video/mx3fb.c b/drivers/video/mx3fb.c
index 9b42ca8..e6dd2b8 100644
--- a/drivers/video/mx3fb.c
+++ b/drivers/video/mx3fb.c
@@ -820,7 +820,7 @@
 	if (penv) {
 		/* decide if it is a string */
 		if (penv[0] <= '9') {
-			videomode = (int) simple_strtoul(penv, NULL, 16);
+			videomode = (int)hextoul(penv, NULL);
 			tmp = 1;
 		}
 	} else {