diff --git a/0203-Don-t-update-the-cmdline-when-generating-legacy-menu.patch b/0203-Don-t-update-the-cmdline-when-generating-legacy-menu.patch
new file mode 100644
index 0000000..c55b7e3
--- /dev/null
+++ b/0203-Don-t-update-the-cmdline-when-generating-legacy-menu.patch
@@ -0,0 +1,36 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Javier Martinez Canillas <javierm@redhat.com>
+Date: Thu, 17 Jun 2021 14:31:42 +0200
+Subject: [PATCH] Don't update the cmdline when generating legacy menuentry
+ commands
+
+On OPAL ppc64le machines with an old petitboot version that doesn't have
+support to parse BLS snippets, the grub2-mkconfig script is executed to
+generate menuentry commands from the BLS snippets.
+
+In this case, the script is executed with the --no-grubenv-update option
+that indicates that no side effects should happen when running the script.
+
+But the options field in the BLS snippets are updated regardless, only do
+the update if --no-grubenv-update was not used.
+
+Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
+---
+ util/grub.d/10_linux.in | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in
+index 68adb55d893..c9296154f51 100644
+--- a/util/grub.d/10_linux.in
++++ b/util/grub.d/10_linux.in
+@@ -261,7 +261,9 @@ if [ -z "\${kernelopts}" ]; then
+ fi
+ EOF
+ 
+-  update_bls_cmdline
++  if [ "x${GRUB_GRUBENV_UPDATE}" = "xyes" ]; then
++      update_bls_cmdline
++  fi
+ 
+   if [ "x${BLS_POPULATE_MENU}" = "xtrue" ]; then
+       populate_menu
diff --git a/grub.patches b/grub.patches
index cd6807c..f225220 100644
--- a/grub.patches
+++ b/grub.patches
@@ -200,3 +200,4 @@ Patch0199: 0199-ieee1275-drop-HEAP_MAX_ADDR-HEAP_MIN_SIZE.patch
 Patch0200: 0200-ieee1275-claim-more-memory.patch
 Patch0201: 0201-ieee1275-request-memory-with-ibm-client-architecture.patch
 Patch0202: 0202-xfs-Include-needsrepair-in-the-supported-incompat-fe.patch
+Patch0203: 0203-Don-t-update-the-cmdline-when-generating-legacy-menu.patch
diff --git a/grub2.spec b/grub2.spec
index fbc02ad..f70318d 100644
--- a/grub2.spec
+++ b/grub2.spec
@@ -14,7 +14,7 @@
 Name:		grub2
 Epoch:		1
 Version:	2.06~rc1
-Release:	8%{?dist}
+Release:	9%{?dist}
 Summary:	Bootloader with support for Linux, Multiboot and more
 License:	GPLv3+
 URL:		http://www.gnu.org/software/grub/
@@ -555,6 +555,10 @@ mv ${EFI_HOME}/grub.cfg.stb ${EFI_HOME}/grub.cfg
 %endif
 
 %changelog
+* Wed Jun 23 2021 Javier Martinez Canillas <javierm@redhat.com> - 2.06~rc1-9
+- Fix kernel cmdline params getting overwritten on ppc64le
+  Resolves: rhbz#1973564
+
 * Mon May 03 2021 Javier Martinez Canillas <javierm@redhat.com> - 2.06~rc1-8
 - Add XFS needsrepair support
   Resolves: rhbz#1940165