diff --git a/board/amarula/vyasa-rk3288/vyasa-rk3288.c b/board/amarula/vyasa-rk3288/vyasa-rk3288.c
index baf197c..92e0698 100644
--- a/board/amarula/vyasa-rk3288/vyasa-rk3288.c
+++ b/board/amarula/vyasa-rk3288/vyasa-rk3288.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <serial.h>
 
 #ifndef CONFIG_TPL_BUILD
 
diff --git a/board/astro/mcf5373l/mcf5373l.c b/board/astro/mcf5373l/mcf5373l.c
index 759ff49..db157a8 100644
--- a/board/astro/mcf5373l/mcf5373l.c
+++ b/board/astro/mcf5373l/mcf5373l.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <serial.h>
 #include <watchdog.h>
 #include <command.h>
 #include <asm/m5329.h>
diff --git a/board/birdland/bav335x/board.c b/board/birdland/bav335x/board.c
index 8811583a..1f3f44a 100644
--- a/board/birdland/bav335x/board.c
+++ b/board/birdland/bav335x/board.c
@@ -10,6 +10,7 @@
 #include <common.h>
 #include <env.h>
 #include <errno.h>
+#include <serial.h>
 #include <spl.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/hardware.h>
diff --git a/board/bticino/mamoj/spl.c b/board/bticino/mamoj/spl.c
index c53bdce..620e4d1 100644
--- a/board/bticino/mamoj/spl.c
+++ b/board/bticino/mamoj/spl.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <serial.h>
 #include <spl.h>
 
 #include <asm/io.h>
diff --git a/board/cssi/MCR3000/MCR3000.c b/board/cssi/MCR3000/MCR3000.c
index 445b84c..dcd2c1c 100644
--- a/board/cssi/MCR3000/MCR3000.c
+++ b/board/cssi/MCR3000/MCR3000.c
@@ -12,6 +12,7 @@
 #include <hwconfig.h>
 #include <mpc8xx.h>
 #include <fdt_support.h>
+#include <serial.h>
 #include <asm/io.h>
 #include <dm/uclass.h>
 #include <wdt.h>
diff --git a/board/engicam/common/spl.c b/board/engicam/common/spl.c
index 4d293c8..a9820a9 100644
--- a/board/engicam/common/spl.c
+++ b/board/engicam/common/spl.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <serial.h>
 #include <spl.h>
 
 #include <asm/io.h>
diff --git a/board/esd/meesc/meesc.c b/board/esd/meesc/meesc.c
index 221048a..4271b0d 100644
--- a/board/esd/meesc/meesc.c
+++ b/board/esd/meesc/meesc.c
@@ -11,6 +11,7 @@
 
 #include <common.h>
 #include <env.h>
+#include <serial.h>
 #include <vsprintf.h>
 #include <asm/io.h>
 #include <asm/gpio.h>
diff --git a/board/gumstix/pepper/board.c b/board/gumstix/pepper/board.c
index f5beb8c..65e5e1e 100644
--- a/board/gumstix/pepper/board.c
+++ b/board/gumstix/pepper/board.c
@@ -9,6 +9,7 @@
 #include <common.h>
 #include <env.h>
 #include <errno.h>
+#include <serial.h>
 #include <spl.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/hardware.h>
diff --git a/board/isee/igep003x/board.c b/board/isee/igep003x/board.c
index a8c2b12..d591212 100644
--- a/board/isee/igep003x/board.c
+++ b/board/isee/igep003x/board.c
@@ -8,6 +8,7 @@
 #include <common.h>
 #include <env.h>
 #include <errno.h>
+#include <serial.h>
 #include <spl.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/hardware.h>
diff --git a/board/isee/igep00x0/spl.c b/board/isee/igep00x0/spl.c
index e092e1a..f814fe1 100644
--- a/board/isee/igep00x0/spl.c
+++ b/board/isee/igep00x0/spl.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+
 
+#include <serial.h>
 #include <asm/io.h>
 #include <asm/arch/mem.h>
 #include <asm/arch/sys_proto.h>
diff --git a/board/liebherr/display5/spl.c b/board/liebherr/display5/spl.c
index 311edaf..e845edf 100644
--- a/board/liebherr/display5/spl.c
+++ b/board/liebherr/display5/spl.c
@@ -6,6 +6,7 @@
 
 #include <common.h>
 #include <env.h>
+#include <serial.h>
 #include <spl.h>
 #include <linux/libfdt.h>
 #include <asm/io.h>
diff --git a/board/liebherr/mccmon6/mccmon6.c b/board/liebherr/mccmon6/mccmon6.c
index 6a5fbbb..c7af73f 100644
--- a/board/liebherr/mccmon6/mccmon6.c
+++ b/board/liebherr/mccmon6/mccmon6.c
@@ -6,6 +6,7 @@
 
 #include <common.h>
 #include <env.h>
+#include <serial.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/imx-regs.h>
diff --git a/board/liebherr/mccmon6/spl.c b/board/liebherr/mccmon6/spl.c
index fc5f5e9..08d2b56 100644
--- a/board/liebherr/mccmon6/spl.c
+++ b/board/liebherr/mccmon6/spl.c
@@ -18,6 +18,7 @@
 #include <asm/arch/crm_regs.h>
 #include <asm/io.h>
 #include <asm/arch/sys_proto.h>
+#include <serial.h>
 #include <spl.h>
 
 #include <asm/arch/mx6-ddr.h>
diff --git a/board/logicpd/am3517evm/am3517evm.c b/board/logicpd/am3517evm/am3517evm.c
index 95c4cfc..18f3c3f 100644
--- a/board/logicpd/am3517evm/am3517evm.c
+++ b/board/logicpd/am3517evm/am3517evm.c
@@ -13,6 +13,7 @@
 #include <common.h>
 #include <dm.h>
 #include <ns16550.h>
+#include <serial.h>
 #include <asm/io.h>
 #include <asm/omap_musb.h>
 #include <asm/arch/am35x_def.h>
diff --git a/board/logicpd/imx6/imx6logic.c b/board/logicpd/imx6/imx6logic.c
index 3c1a3a9..0ea24c0 100644
--- a/board/logicpd/imx6/imx6logic.c
+++ b/board/logicpd/imx6/imx6logic.c
@@ -14,6 +14,7 @@
 #include <input.h>
 #include <mmc.h>
 #include <fsl_esdhc_imx.h>
+#include <serial.h>
 #include <asm/io.h>
 #include <asm/gpio.h>
 #include <linux/sizes.h>
diff --git a/board/logicpd/omap3som/omap3logic.c b/board/logicpd/omap3som/omap3logic.c
index 43f049e..2f93248 100644
--- a/board/logicpd/omap3som/omap3logic.c
+++ b/board/logicpd/omap3som/omap3logic.c
@@ -17,6 +17,7 @@
 #include <flash.h>
 #include <nand.h>
 #include <i2c.h>
+#include <serial.h>
 #include <twl4030.h>
 #include <asm/io.h>
 #include <asm/arch/mmc_host_def.h>
diff --git a/board/overo/common.c b/board/overo/common.c
index 2c4f412..67823e6 100644
--- a/board/overo/common.c
+++ b/board/overo/common.c
@@ -11,6 +11,7 @@
  * (C) Copyright 2004-2008
  * Texas Instruments, <www.ti.com>
  */
+#include <serial.h>
 #include <twl4030.h>
 #include <common.h>
 #include <asm/io.h>
diff --git a/board/siemens/common/board.c b/board/siemens/common/board.c
index 75462d1..5f5e2eb 100644
--- a/board/siemens/common/board.c
+++ b/board/siemens/common/board.c
@@ -12,6 +12,7 @@
 #include <common.h>
 #include <env.h>
 #include <errno.h>
+#include <serial.h>
 #include <spl.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/hardware.h>
diff --git a/board/silica/pengwyn/board.c b/board/silica/pengwyn/board.c
index 345701f..c0496c5 100644
--- a/board/silica/pengwyn/board.c
+++ b/board/silica/pengwyn/board.c
@@ -7,6 +7,7 @@
 
 #include <common.h>
 #include <env.h>
+#include <serial.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/ddr_defs.h>
diff --git a/board/st/stm32f746-disco/stm32f746-disco.c b/board/st/stm32f746-disco/stm32f746-disco.c
index e89ed21..5be60af 100644
--- a/board/st/stm32f746-disco/stm32f746-disco.c
+++ b/board/st/stm32f746-disco/stm32f746-disco.c
@@ -10,6 +10,7 @@
 #include <miiphy.h>
 #include <phy_interface.h>
 #include <ram.h>
+#include <serial.h>
 #include <spl.h>
 #include <splash.h>
 #include <st_logo_data.h>
diff --git a/board/tcl/sl50/board.c b/board/tcl/sl50/board.c
index c7eed31..a958827 100644
--- a/board/tcl/sl50/board.c
+++ b/board/tcl/sl50/board.c
@@ -10,6 +10,7 @@
 #include <common.h>
 #include <env.h>
 #include <errno.h>
+#include <serial.h>
 #include <spl.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/hardware.h>
diff --git a/board/ti/am57xx/board.c b/board/ti/am57xx/board.c
index 237a834..8d1f389 100644
--- a/board/ti/am57xx/board.c
+++ b/board/ti/am57xx/board.c
@@ -11,6 +11,7 @@
 #include <env.h>
 #include <palmas.h>
 #include <sata.h>
+#include <serial.h>
 #include <usb.h>
 #include <asm/omap_common.h>
 #include <asm/omap_sec_common.h>
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c
index 0138fc9..12e657c 100644
--- a/board/ti/beagle/beagle.c
+++ b/board/ti/beagle/beagle.c
@@ -16,6 +16,7 @@
 #include <dm.h>
 #include <env.h>
 #include <ns16550.h>
+#include <serial.h>
 #ifdef CONFIG_LED_STATUS
 #include <status_led.h>
 #endif
diff --git a/board/ti/dra7xx/evm.c b/board/ti/dra7xx/evm.c
index 74d04bb..ea85235 100644
--- a/board/ti/dra7xx/evm.c
+++ b/board/ti/dra7xx/evm.c
@@ -13,6 +13,7 @@
 #include <env.h>
 #include <palmas.h>
 #include <sata.h>
+#include <serial.h>
 #include <linux/string.h>
 #include <asm/gpio.h>
 #include <usb.h>
diff --git a/board/ti/evm/evm.c b/board/ti/evm/evm.c
index d0b9baf..d26dd5b 100644
--- a/board/ti/evm/evm.c
+++ b/board/ti/evm/evm.c
@@ -15,6 +15,7 @@
 #include <env.h>
 #include <ns16550.h>
 #include <netdev.h>
+#include <serial.h>
 #include <asm/io.h>
 #include <asm/arch/mem.h>
 #include <asm/arch/mux.h>
diff --git a/board/vscom/baltos/board.c b/board/vscom/baltos/board.c
index 1ba58d0..588f6db 100644
--- a/board/vscom/baltos/board.c
+++ b/board/vscom/baltos/board.c
@@ -10,6 +10,7 @@
 #include <common.h>
 #include <env.h>
 #include <errno.h>
+#include <serial.h>
 #include <linux/libfdt.h>
 #include <spl.h>
 #include <asm/arch/cpu.h>