bootstd: Support creating a boot menu

Create an expo to handle the boot menu. For now this is quite simple, with
just a header, some menu items and a pointer to show the current one.

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

1 files changed, 35 insertions, 2 deletions

diff --git a/cmd/bootflow.c b/cmd/bootflow.c
index 495ef85f25..2b6ed26fdc 100644
--- a/cmd/bootflow.c
+++ b/cmd/bootflow.c
@@ -389,6 +389,37 @@ static int do_bootflow_boot(struct cmd_tbl *cmdtp, int flag, int argc,
 
 	return 0;
 }
+
+static int do_bootflow_menu(struct cmd_tbl *cmdtp, int flag, int argc,
+			    char *const argv[])
+{
+	struct bootstd_priv *std;
+	struct bootflow *bflow;
+	bool text_mode = false;
+	int ret;
+
+	if (argc > 1 && *argv[1] == '-')
+		text_mode = strchr(argv[1], 't');
+
+	ret = bootstd_get_priv(&std);
+	if (ret)
+		return CMD_RET_FAILURE;
+
+	ret = bootflow_menu_run(std, text_mode, &bflow);
+	if (ret) {
+		if (ret == -EAGAIN)
+			printf("Nothing chosen\n");
+		else
+			printf("Menu failed (err=%d)\n", ret);
+
+		return CMD_RET_FAILURE;
+	}
+
+	printf("Selected: %s\n", bflow->os_name ? bflow->os_name : bflow->name);
+	std->cur_bootflow = bflow;
+
+	return 0;
+}
 #endif /* CONFIG_CMD_BOOTFLOW_FULL */
 
 #ifdef CONFIG_SYS_LONGHELP
@@ -398,7 +429,8 @@ static char bootflow_help_text[] =
 	"bootflow list [-e]             - list scanned bootflows (-e errors)\n"
 	"bootflow select [<num>|<name>] - select a bootflow\n"
 	"bootflow info [-d]             - show info on current bootflow (-d dump bootflow)\n"
-	"bootflow boot                  - boot current bootflow (or first available if none selected)";
+	"bootflow boot                  - boot current bootflow (or first available if none selected)\n"
+	"bootflow menu [-t]             - show a menu of available bootflows";
 #else
 	"scan - boot first available bootflow\n";
 #endif
@@ -410,6 +442,7 @@ U_BOOT_CMD_WITH_SUBCMDS(bootflow, "Boot flows", bootflow_help_text,
 	U_BOOT_SUBCMD_MKENT(list, 2, 1, do_bootflow_list),
 	U_BOOT_SUBCMD_MKENT(select, 2, 1, do_bootflow_select),
 	U_BOOT_SUBCMD_MKENT(info, 2, 1, do_bootflow_info),
-	U_BOOT_SUBCMD_MKENT(boot, 1, 1, do_bootflow_boot)
+	U_BOOT_SUBCMD_MKENT(boot, 1, 1, do_bootflow_boot),
+	U_BOOT_SUBCMD_MKENT(menu, 2, 1, do_bootflow_menu),
 #endif
 );