From fcdcd34d509bc1daf38559c802d8b45680fddaec Mon Sep 17 00:00:00 2001
From: Neal Gompa <ngompa@fedoraproject.org>
Date: Thu, 20 Feb 2025 14:46:28 -0500
Subject: components/boot, teams/server: Add partitioning hack for the
 Raspberry Pi 3

The Raspberry Pi 3 does not recognize a FAT filesystem marked with
the 0xef type, so until we drop support for this device, hack the
partition manually to use a legacy FAT filesystem partition type.
---
 components/boot.xml          |  2 +-
 editbootinstall_rpilegacy.sh | 17 +++++++++++++++++
 teams/server.xml             |  2 +-
 3 files changed, 19 insertions(+), 2 deletions(-)
 create mode 100755 editbootinstall_rpilegacy.sh

diff --git a/components/boot.xml b/components/boot.xml
index 4b7db8e..0d59f5e 100644
--- a/components/boot.xml
+++ b/components/boot.xml
@@ -29,7 +29,7 @@
 	<preferences profiles="BootDiskCore" arch="aarch64">
 		<type image="oem"
 		      filesystem="btrfs" btrfs_root_is_subvolume="true" btrfs_set_default_volume="false" fsmountoptions="x-systemd.growfs,compress=zstd:1"
-		      kernelcmdline="rhgb quiet" devicepersistency="by-uuid" force_mbr="true"
+		      kernelcmdline="rhgb quiet" devicepersistency="by-uuid" force_mbr="true" editbootinstall="editbootinstall_rpilegacy.sh"
 		      bootpartition="true" bootpartsize="1024" bootfilesystem="ext4" efipartsize="500" firmware="uefi"
 		      rootfs_label="fedora"
 		      >
diff --git a/editbootinstall_rpilegacy.sh b/editbootinstall_rpilegacy.sh
new file mode 100755
index 0000000..dfa178f
--- /dev/null
+++ b/editbootinstall_rpilegacy.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+set -euxo pipefail
+
+diskname=$1
+devname="$2"
+loopname="${devname%*p?}"
+loopdev=/dev/${loopname#/dev/*}
+
+#==========================================
+# Force the ESP to use legacy MBR identifier
+#------------------------------------------
+#
+# Raspberry Pi 3 and older systems don't handle
+# the 0xef partition type for the ESP, so switch
+# to the legacy one.
+#
+sfdisk --change-id ${loopdev} 1 6
diff --git a/teams/server.xml b/teams/server.xml
index a892f34..0413e5a 100644
--- a/teams/server.xml
+++ b/teams/server.xml
@@ -110,7 +110,7 @@
 	<preferences profiles="ServerDisk" arch="aarch64">
 		<type image="oem"
 		      filesystem="xfs"
-		      devicepersistency="by-uuid" force_mbr="true"
+		      devicepersistency="by-uuid" force_mbr="true" editbootinstall="editbootinstall_rpilegacy.sh"
 		      bootpartition="true" bootpartsize="1000" bootfilesystem="ext4" efipartsize="500" firmware="uefi"
 		      rootfs_label="fedora"
 		      >
-- 
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