[PATCH v2 21/35] bootstd: Allow the bootdev to be optional in bootflows

[Simon Glass]

With global bootmeths we want to scan without a bootdev. Update the logic
to allow this.

Change the bootflow command to show the bootdev only when valid.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

(no changes since v1)

 boot/bootdev-uclass.c | 7 +++++--
 boot/bootflow.c       | 3 ++-
 cmd/bootflow.c        | 4 ++--
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/boot/bootdev-uclass.c b/boot/bootdev-uclass.c
index 5683006c73c..13ac69eb392 100644
--- a/boot/bootdev-uclass.c
+++ b/boot/bootdev-uclass.c
@@ -36,7 +36,6 @@ enum {
 
 int bootdev_add_bootflow(struct bootflow *bflow)
 {
-	struct bootdev_uc_plat *ucp = dev_get_uclass_plat(bflow->dev);
 	struct bootstd_priv *std;
 	struct bootflow *new;
 	int ret;
@@ -52,7 +51,11 @@ int bootdev_add_bootflow(struct bootflow *bflow)
 	memcpy(new, bflow, sizeof(*bflow));
 
 	list_add_tail(&new->glob_node, &std->glob_head);
-	list_add_tail(&new->bm_node, &ucp->bootflow_head);
+	if (bflow->dev) {
+		struct bootdev_uc_plat *ucp = dev_get_uclass_plat(bflow->dev);
+
+		list_add_tail(&new->bm_node, &ucp->bootflow_head);
+	}
 
 	return 0;
 }
diff --git a/boot/bootflow.c b/boot/bootflow.c
index 24ba3c34660..37bccb823a1 100644
--- a/boot/bootflow.c
+++ b/boot/bootflow.c
@@ -307,7 +307,8 @@ void bootflow_free(struct bootflow *bflow)
 
 void bootflow_remove(struct bootflow *bflow)
 {
-	list_del(&bflow->bm_node);
+	if (bflow->dev)
+		list_del(&bflow->bm_node);
 	list_del(&bflow->glob_node);
 
 	bootflow_free(bflow);
diff --git a/cmd/bootflow.c b/cmd/bootflow.c
index af4b9c37323..47899245ee8 100644
--- a/cmd/bootflow.c
+++ b/cmd/bootflow.c
@@ -69,8 +69,8 @@ static void show_bootflow(int index, struct bootflow *bflow, bool errors)
 {
 	printf("%3x  %-11s  %-6s  %-9.9s %4x  %-25.25s %s\n", index,
 	       bflow->method->name, bootflow_state_get_name(bflow->state),
-	       dev_get_uclass_name(dev_get_parent(bflow->dev)), bflow->part,
-	       bflow->name, bflow->fname);
+	       bflow->dev ? dev_get_uclass_name(dev_get_parent(bflow->dev)) :
+	       "(none)", bflow->part, bflow->name, bflow->fname);
 	if (errors)
 		report_bootflow_err(bflow, bflow->err);
 }
-- 
2.37.1.455.g008518b4e5-goog