From 536f42db1c6ed62afc08985f5cb65ce0df1f8447 Mon Sep 17 00:00:00 2001
From: Peter Robinson <pbrobinson@gmail.com>
Date: Nov 24 2020 10:44:12 +0000
Subject: Add device tree kernel install option, minor cleanups


---

diff --git a/10-devicetree.install b/10-devicetree.install
new file mode 100755
index 0000000..3345391
--- /dev/null
+++ b/10-devicetree.install
@@ -0,0 +1,73 @@
+#!/bin/bash
+
+# set -x
+
+if [[ "$(uname -m)" == arm* || "$(uname -m)" == aarch64 ]]
+then
+COMMAND="$1"
+KERNEL_VERSION="$2"
+#BOOT_DIR_ABS="$3"
+#KERNEL_IMAGE="$4"
+
+[ -f /etc/u-boot.conf ] && source /etc/u-boot.conf || true
+[ -z "$FIRMWAREDT" ] || FirmwareDT=$FIRMWAREDT
+
+if [[ $FirmwareDT == "True" ]]
+then
+	# if we want to use firmware DT we remove symlink to current kernel DT
+        if [ -h /boot/dtb ]; then
+            rm -f /boot/dtb
+        fi
+	exit 0
+fi
+
+# Setup a /boot/dtb -> /boot/dtb-$newest_kernel_version symlink so that
+# u-boot can find the correct dtb to load.
+#
+# If invoked to 'add' a new kernel, find the newest based on `sort`ing
+# the kernel versions dtb.  If 'remove', then follow basically the same
+# procedure but exclude the version currently being removed.
+#
+# The theory of operation here is that, while newer kernels may add new
+# dtb nodes and fields, as upstreaming hw support for some particular
+# device progresses, it should never make backward incompatible changes.
+# So it should always be safe to use a newer dtb with an older kernel.
+
+    list_dtb_versions() {
+        excluded_version="$1"
+        for dtbdir in /boot/dtb-*; do
+            dtbver=${dtbdir#*-}
+            if [ "$dtbver" != "$excluded_version" ]; then
+                echo $dtbver
+            fi
+        done
+    }
+
+    setup_dtb_link() {
+        ver=`list_dtb_versions $1 | sort -r --sort=version | head -1`
+        if [ -h /boot/dtb ]; then
+            rm -f /boot/dtb
+        fi
+        ln -s dtb-$ver /boot/dtb
+    }
+
+    ret=0
+    case "$COMMAND" in
+        add)
+            # If we're adding a kernel we want that version
+            if [ -h /boot/dtb ]; then
+                rm -f /boot/dtb
+            fi
+            ln -s dtb-$KERNEL_VERSION /boot/dtb
+            ret=$?
+            ;;
+        remove)
+            setup_dtb_link $KERNEL_VERSION
+            ret=$?
+            ;;
+    esac
+    exit $ret
+else
+    # Just exit on non ARM
+    exit 0
+fi
diff --git a/grubby.spec b/grubby.spec
index ac3ed0c..985b640 100644
--- a/grubby.spec
+++ b/grubby.spec
@@ -1,6 +1,6 @@
 Name: grubby
 Version: 8.40
-Release: 48%{?dist}
+Release: 49%{?dist}
 Summary: Command line tool for updating bootloader configs
 License: GPLv2+
 URL: https://github.com/rhinstaller/grubby
@@ -14,7 +14,9 @@ Source2: grubby.in
 Source3: installkernel.in
 Source4: installkernel-bls
 Source5: 95-kernel-hooks.install
-Source6: grubby.8
+Source6: 10-devicetree.install
+Source7: grubby.8
+
 Patch0001: 0001-remove-the-old-crufty-u-boot-support.patch
 Patch0002: 0002-Change-return-type-in-getRootSpecifier.patch
 Patch0003: 0003-Add-btrfs-subvolume-support-for-grub2.patch
@@ -31,7 +33,7 @@ Patch0013: 0013-Fix-build-with-rpm-4.16.patch
 
 BuildRequires: gcc
 BuildRequires: pkgconfig glib2-devel popt-devel 
-BuildRequires: libblkid-devel git-core sed make
+BuildRequires: libblkid-devel sed make
 # for make test / getopt:
 BuildRequires: util-linux-ng
 BuildRequires: rpm-devel
@@ -46,6 +48,7 @@ Requires: s390utils-core
 Requires: findutils
 Requires: util-linux
 
+Conflicts:	uboot-tools < 2021.01-0.1.rc2
 Obsoletes:	%{name}-bls < %{version}-%{release}
 
 %description
@@ -54,16 +57,7 @@ BootLoaderSpec files and is meant to only be used for legacy compatibility
 users with existing grubby users.
 
 %prep
-%setup -q -n grubby-%{version}-1
-
-git init
-git config user.email "noone@example.com"
-git config user.name "no one"
-git add .
-git commit -a -q -m "%{version} baseline"
-git am %{patches} </dev/null
-git config --unset user.email
-git config --unset user.name
+%autosetup -p1 -n grubby-%{version}-1
 
 %build
 %set_build_flags
@@ -87,8 +81,9 @@ sed -e "s,@@LIBEXECDIR@@,%{_libexecdir}/grubby,g" %{SOURCE2} \
 sed -e "s,@@LIBEXECDIR@@,%{_libexecdir}/installkernel,g" %{SOURCE3} \
 	> %{buildroot}%{_sbindir}/installkernel
 install -D -m 0755 -t %{buildroot}%{_prefix}/lib/kernel/install.d/ %{SOURCE5}
+install -D -m 0755 -t %{buildroot}%{_prefix}/lib/kernel/install.d/ %{SOURCE6}
 rm %{buildroot}%{_mandir}/man8/grubby.8*
-install -m 0644 %{SOURCE6} %{buildroot}%{_mandir}/man8/
+install -m 0644 %{SOURCE7} %{buildroot}%{_mandir}/man8/
 
 %post
 if [ "$1" = 2 ]; then
@@ -112,7 +107,6 @@ scripts which install new kernels and need to find information about the
 current boot environment.
 
 %files
-%{!?_licensedir:%global license %%doc}
 %license COPYING
 %dir %{_libexecdir}/grubby
 %dir %{_libexecdir}/installkernel
@@ -121,11 +115,11 @@ current boot environment.
 %attr(0755,root,root) %{_sbindir}/grubby
 %attr(0755,root,root) %{_libexecdir}/installkernel/installkernel-bls
 %attr(0755,root,root) %{_sbindir}/installkernel
+%attr(0755,root,root) %{_prefix}/lib/kernel/install.d/10-devicetree.install
 %attr(0755,root,root) %{_prefix}/lib/kernel/install.d/95-kernel-hooks.install
 %{_mandir}/man8/[gi]*.8*
 
 %files deprecated
-%{!?_licensedir:%global license %%doc}
 %license COPYING
 %dir %{_libexecdir}/grubby
 %dir %{_libexecdir}/installkernel
@@ -137,6 +131,9 @@ current boot environment.
  %{_mandir}/man8/*.8*
 
 %changelog
+* Fri Nov 20 2020 Peter Robinson <pbrobinson@fedoraproject.org> - 8.40-49
+- Add device tree kernel install option
+
 * Mon Oct 26 2020 Josh Boyer <jwb@redhat.com> - 8.40-48
 - Only require s390utils-core, not s390utils-base