Initial version of SteamOS kdump

Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>

module-setup.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+#
+#  SPDX-License-Identifier: LGPL-2.1+
+#
+#  Copyright (c) 2021 Valve.
+#
+#  SteamOS kdump module construction/inclusion script for
+#  Dracut-based initramfs.
+#
+
+# Only include kdump if it is explicitly asked in the argument list
+check() {
+    return 255
+}
+
+installkernel() {
+    hostonly='' instmods ext4 
+}
+
+install() {
+    # First clear all unnecessary firmwares/drivers added by drm in order to
+    # reduce the size of this minimal initramfs being created. This should
+    # be already done via command-line arguments, but let's play safe and delete
+    # from here as well just in case.
+    rm -rf $initdir/usr/lib/firmware/amdgpu/
+    rm -rf $initdir/usr/lib/modules/*/kernel/drivers/gpu/drm/amd/*
+
+    # Install necessary binaries
+    inst date
+    inst sync
+
+    mkdir -p $initdir/usr/lib/kdump
+    cp -LR --preserve=all /usr/lib/kdump/* $initdir/usr/lib/kdump/
+    cp -LR --preserve=all /etc/default/kdump $initdir/usr/lib/kdump/kdump.etc
+
+    inst_hook pre-mount 01 "$moddir/kdump_collect.sh"
+}