plymouth: add extra kernel parameter

Add extra kernel parameter to make sure the plymouth splash
screen display during boot.

Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-core/plymouth/files/0001-plymouth-start-service-in-add-related-kernel-paramet.patch

@@ -0,0 +1,31 @@
+From 658eac007d14d836cb002a5675487bac63d50324 Mon Sep 17 00:00:00 2001
+From: Mingli Yu <mingli.yu@windriver.com>
+Date: Mon, 7 Feb 2022 03:22:12 +0000
+Subject: [PATCH] plymouth-start.service.in: add related kernel parameter
+
+Add extra kernel parameter to make the plymouth splash screen
+display during boot.
+
+Upstream-Status: Submitted [https://gitlab.freedesktop.org/plymouth/plymouth/-/merge_requests/156]
+
+Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
+---
+ systemd-units/plymouth-start.service.in | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/systemd-units/plymouth-start.service.in b/systemd-units/plymouth-start.service.in
+index 830a62d..c20aabe 100644
+--- a/systemd-units/plymouth-start.service.in
++++ b/systemd-units/plymouth-start.service.in
+@@ -9,7 +9,7 @@ ConditionVirtualization=!container
+ IgnoreOnIsolate=true
+ 
+ [Service]
+-ExecStart=@PLYMOUTH_DAEMON_DIR@/plymouthd --mode=boot --pid-file=@plymouthruntimedir@/pid --attach-to-session
++ExecStart=@PLYMOUTH_DAEMON_DIR@/plymouthd --mode=boot  --kernel-command-line="splash plymouth.ignore-serial-consoles" --pid-file=@plymouthruntimedir@/pid --attach-to-session
+ ExecStartPost=-@PLYMOUTH_CLIENT_DIR@/plymouth show-splash
+ Type=forking
+ RemainAfterExit=yes
+-- 
+2.31.1
+

meta-oe/recipes-core/plymouth/plymouth_0.9.5.bb

@@ -21,6 +21,7 @@ SRC_URI = " \
     http://www.freedesktop.org/software/plymouth/releases/${BPN}-${PV}.tar.xz \
     file://0001-Make-full-path-to-systemd-tty-ask-password-agent-con.patch \
     file://0001-systemd-switch-to-KillMode-mixed.patch \
+    file://0001-plymouth-start-service-in-add-related-kernel-paramet.patch \
         "
 
 SRC_URI[md5sum] = "8a25d23f3ae732af300a56fa33cacff2"