sandbox: hostfile: maintain created temp files over reset

Currently, hostfils without a barebox,filename are assigned a new
temporary file on every start.

For use of a hostfile syscon for reboot mode or reset source, we will
need to persist the changes over a regular reset. This can easily be
done by passing through all automatically created temporary file with
an explicit --image option on subsequent runs. Do so.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 9 insertions, 1 deletions

diff --git a/arch/sandbox/board/hostfile.c b/arch/sandbox/board/hostfile.c
index 2d4e5d55ea..e3e38b7119 100644
--- a/arch/sandbox/board/hostfile.c
+++ b/arch/sandbox/board/hostfile.c
@@ -191,14 +191,22 @@ static int of_hostfile_fixup(struct device_node *root, void *ctx)
 {
 	struct hf_info *hf = ctx;
 	struct device_node *node;
+	bool name_only = false;
 	int ret;
 
-	node = of_new_node(root, hf->devname);
+	node = of_get_child_by_name(root, hf->devname);
+	if (node)
+		name_only = true;
+	else
+		node = of_new_node(root, hf->devname);
 
 	ret = of_property_write_string(node, "barebox,filename", hf->filename);
 	if (ret)
 		return ret;
 
+	if (name_only)
+		return 0;
+
 	ret = of_property_write_string(node, "compatible", hostfile_dt_ids->compatible);
 	if (ret)
 		return ret;