diff --git a/conf/machine/include/nanopi-m4.inc b/conf/machine/include/nanopi-m4.inc
index a14b705..8a7c1d9 100644
--- a/conf/machine/include/nanopi-m4.inc
+++ b/conf/machine/include/nanopi-m4.inc
@@ -21,5 +21,3 @@ WKS_FILE_DEPENDS ?= " \
 IMAGE_BOOT_FILES ?= "\
     ${KERNEL_IMAGETYPE} \
     "
-
-SERIAL_CONSOLES = "1500000;ttyS2"
diff --git a/conf/machine/include/rk3066.inc b/conf/machine/include/rk3066.inc
index dffbee0..5cc1024 100644
--- a/conf/machine/include/rk3066.inc
+++ b/conf/machine/include/rk3066.inc
@@ -7,5 +7,7 @@ require conf/machine/include/tune-cortexa9.inc
 require conf/machine/include/soc-family.inc
 require conf/machine/include/rockchip-defaults.inc
 
+SERIAL_CONSOLES = "115200;ttyS2"
+
 KBUILD_DEFCONFIG = "multi_v7_defconfig"
 KERNEL_IMAGETYPE = "zImage"
diff --git a/conf/machine/include/rk3188.inc b/conf/machine/include/rk3188.inc
index 59e65d1..6f3da93 100644
--- a/conf/machine/include/rk3188.inc
+++ b/conf/machine/include/rk3188.inc
@@ -7,5 +7,7 @@ require conf/machine/include/tune-cortexa9.inc
 require conf/machine/include/soc-family.inc
 require conf/machine/include/rockchip-defaults.inc
 
+SERIAL_CONSOLES = "115200;ttyFIQ0"
+
 KBUILD_DEFCONFIG = "multi_v7_defconfig"
 KERNEL_IMAGETYPE = "zImage"
diff --git a/conf/machine/include/rk3288.inc b/conf/machine/include/rk3288.inc
index 480e250..a109f26 100644
--- a/conf/machine/include/rk3288.inc
+++ b/conf/machine/include/rk3288.inc
@@ -7,11 +7,11 @@ require conf/machine/include/tune-cortexa17.inc
 require conf/machine/include/soc-family.inc
 require conf/machine/include/rockchip-defaults.inc
 
+SERIAL_CONSOLES = "115200;ttyS2"
+
 KBUILD_DEFCONFIG ?= "multi_v7_defconfig"
 KERNEL_IMAGETYPE = "zImage"
 
-SERIAL_CONSOLES = "115200;ttyS2"
-
 PREFERRED_PROVIDER_virtual/bootloader ?= "u-boot"
 SPL_BINARY ?= "idbloader.img"
 
diff --git a/conf/machine/include/rk3328.inc b/conf/machine/include/rk3328.inc
index a4bbc5d..5b11868 100644
--- a/conf/machine/include/rk3328.inc
+++ b/conf/machine/include/rk3328.inc
@@ -19,7 +19,5 @@ TFA_BUILD_TARGET = "bl31"
 UBOOT_SUFFIX ?= "itb"
 UBOOT_ENTRYPOINT ?= "0x06000000"
 
-SERIAL_CONSOLES = "1500000;ttyS2"
-
 PREFERRED_PROVIDER_virtual/bootloader ?= "u-boot"
 SPL_BINARY ?= "idbloader.img"
diff --git a/conf/machine/include/rk3399.inc b/conf/machine/include/rk3399.inc
index f6b7826..9f9f474 100644
--- a/conf/machine/include/rk3399.inc
+++ b/conf/machine/include/rk3399.inc
@@ -19,8 +19,6 @@ TFA_BUILD_TARGET = "bl31"
 UBOOT_SUFFIX ?= "itb"
 UBOOT_ENTRYPOINT ?= "0x06000000"
 
-SERIAL_CONSOLES = "115200;ttyS2"
-
 PREFERRED_PROVIDER_virtual/bootloader ?= "u-boot"
 SPL_BINARY ?= "idbloader.img"
 
diff --git a/conf/machine/include/rock-pi-4.inc b/conf/machine/include/rock-pi-4.inc
index 9c21084..a3e60c7 100644
--- a/conf/machine/include/rock-pi-4.inc
+++ b/conf/machine/include/rock-pi-4.inc
@@ -17,6 +17,4 @@ IMAGE_BOOT_FILES ?= "\
     ${KERNEL_IMAGETYPE} \
     "
 
-SERIAL_CONSOLES = "1500000;ttyS2"
-
 MACHINE_EXTRA_RRECOMMENDS += "kernel-modules"
diff --git a/conf/machine/include/rockchip-defaults.inc b/conf/machine/include/rockchip-defaults.inc
index a4e2a2c..b0346c9 100644
--- a/conf/machine/include/rockchip-defaults.inc
+++ b/conf/machine/include/rockchip-defaults.inc
@@ -21,9 +21,19 @@ XSERVER = " \
 	"
 
 # misc
+SERIAL_CONSOLES ?= "1500000;ttyS2"
 IMAGE_FSTYPES += "ext4"
 
+# use the first-defined <baud>;<device> pair in SERIAL_CONSOLES
+# for the console parameter in the wks files
+RK_CONSOLE_BAUD ?= "${@d.getVar('SERIAL_CONSOLES').split(';')[0]}"
+RK_CONSOLE_DEVICE ?= "${@d.getVar('SERIAL_CONSOLES').split(';')[1].split()[0]}"
+
 # boot device (sd-card/emmc)
 RK_BOOT_DEVICE ??= "mmcblk0"
-WICVARS_append = " RK_BOOT_DEVICE"
 
+WICVARS_append = " \
+	RK_BOOT_DEVICE \
+	RK_CONSOLE_BAUD \
+	RK_CONSOLE_DEVICE \
+	"
diff --git a/conf/machine/marsboard-rk3066.conf b/conf/machine/marsboard-rk3066.conf
index 09414bc..52fd256 100644
--- a/conf/machine/marsboard-rk3066.conf
+++ b/conf/machine/marsboard-rk3066.conf
@@ -8,5 +8,4 @@
 
 require conf/machine/include/rk3066.inc
 
-SERIAL_CONSOLES = "115200;ttyS2"
 KERNEL_DEVICETREE = "rk3066a-marsboard.dtb"
diff --git a/conf/machine/radxarock.conf b/conf/machine/radxarock.conf
index 2036f6a..42d8848 100644
--- a/conf/machine/radxarock.conf
+++ b/conf/machine/radxarock.conf
@@ -9,5 +9,4 @@
 
 require conf/machine/include/rk3188.inc
 
-SERIAL_CONSOLES = "115200;ttyFIQ0"
 KERNEL_DEVICETREE = "rk3188-radxarock.dtb"
diff --git a/wic/firefly-rk3288.wks b/wic/firefly-rk3288.wks
index da0067f..7b14d1f 100644
--- a/wic/firefly-rk3288.wks
+++ b/wic/firefly-rk3288.wks
@@ -4,4 +4,4 @@
 include rk3288-boot.wks
 part / --ondisk ${RK_BOOT_DEVICE} --source rootfs --fstype=ext4 --label root
 
-bootloader --ptable gpt --append="console=tty1 console=ttyS2,115200n8 rw root=/dev/${RK_BOOT_DEVICE}p7 rootfstype=ext4 init=/sbin/init"
+bootloader --ptable gpt --append="console=tty1 console=${RK_CONSOLE_DEVICE},${RK_CONSOLE_BAUD}n8 rw root=/dev/${RK_BOOT_DEVICE}p7 rootfstype=ext4 init=/sbin/init"
diff --git a/wic/rock-pi-4.wks b/wic/rock-pi-4.wks
index c6174a9..5c02e9f 100644
--- a/wic/rock-pi-4.wks
+++ b/wic/rock-pi-4.wks
@@ -4,4 +4,4 @@
 include rk3399-boot.wks
 part / --ondisk ${RK_BOOT_DEVICE} --source rootfs --fstype=ext4 --label root
 
-bootloader --ptable gpt --append="console=tty1 console=ttyS2,1500000n8 rw root=/dev/${RK_BOOT_DEVICE}p7 rootfstype=ext4 init=/sbin/init"
+bootloader --ptable gpt --append="console=tty1 console=${RK_CONSOLE_DEVICE},${RK_CONSOLE_BAUD}n8 rw root=/dev/${RK_BOOT_DEVICE}p7 rootfstype=ext4 init=/sbin/init"
diff --git a/wic/rock-pi-e.wks b/wic/rock-pi-e.wks
index 97f84d1..9c10d90 100644
--- a/wic/rock-pi-e.wks
+++ b/wic/rock-pi-e.wks
@@ -1,4 +1,4 @@
 include rk3328-boot.wks
 part / --ondisk ${RK_BOOT_DEVICE} --source rootfs --fstype=ext4 --label root
 
-bootloader --ptable gpt --append="console=tty1 console=ttyS2,1500000n8 rw root=/dev/${RK_BOOT_DEVICE}p7 rootfstype=ext4 init=/sbin/init"
+bootloader --ptable gpt --append="console=tty1 console=${RK_CONSOLE_DEVICE},${RK_CONSOLE_BAUD}n8 rw root=/dev/${RK_BOOT_DEVICE}p7 rootfstype=ext4 init=/sbin/init"
diff --git a/wic/tinker-board.wks b/wic/tinker-board.wks
index 5a63ce0..00ae820 100644
--- a/wic/tinker-board.wks
+++ b/wic/tinker-board.wks
@@ -5,4 +5,4 @@ include rk3288-boot.wks
 
 part / --ondisk ${RK_BOOT_DEVICE} --source rootfs --fstype=ext4 --label root
 
-bootloader --ptable gpt --append="console=tty1 console=ttyS2,115200n8 rw root=/dev/${RK_BOOT_DEVICE}p7 rootfstype=ext4 init=/sbin/init"
+bootloader --ptable gpt --append="console=tty1 console=${RK_CONSOLE_DEVICE},${RK_CONSOLE_BAUD}n8 rw root=/dev/${RK_BOOT_DEVICE}p7 rootfstype=ext4 init=/sbin/init"
diff --git a/wic/vyasa-rk3288.wks b/wic/vyasa-rk3288.wks
index 5db65df..5346fbd 100644
--- a/wic/vyasa-rk3288.wks
+++ b/wic/vyasa-rk3288.wks
@@ -4,5 +4,5 @@
 include rk3288-boot.wks
 part / --ondisk ${RK_BOOT_DEVICE} --source rootfs --fstype=ext4 --label root
 
-bootloader --ptable gpt --append="console=tty1 console=ttyS2,115200n8 rw root=/dev/${RK_BOOT_DEVICE}p7 rootfstype=ext4 init=/sbin/init"
+bootloader --ptable gpt --append="console=tty1 console=${RK_CONSOLE_DEVICE},${RK_CONSOLE_BAUD}n8 rw root=/dev/${RK_BOOT_DEVICE}p7 rootfstype=ext4 init=/sbin/init"