1 files changed, 58 insertions, 0 deletions
diff --git a/cmd/usb_gadget_sdp.c b/cmd/usb_gadget_sdp.c
new file mode 100644
index 00000000000..39259a3b092
--- /dev/null
+++ b/cmd/usb_gadget_sdp.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * cmd_sdp.c -- sdp command
+ *
+ * Copyright (C) 2016 Toradex
+ * Author: Stefan Agner <stefan.agner@toradex.com>
+ */
+
+#include <command.h>
+#include <g_dnl.h>
+#include <sdp.h>
+#include <usb.h>
+#include <linux/printk.h>
+
+static int do_sdp(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+	int controller_index;
+	struct udevice *udc;
+	int ret;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	controller_index = simple_strtoul(argv[1], NULL, 0);
+	ret = udc_device_get_by_index(controller_index, &udc);
+	if (ret)
+		return ret;
+
+	g_dnl_clear_detach();
+	ret = g_dnl_register("usb_dnl_sdp");
+	if (ret) {
+		pr_err("SDP dnl register failed: %d\n", ret);
+		goto exit_register;
+	}
+
+	ret = sdp_init(udc);
+	if (ret) {
+		pr_err("SDP init failed: %d\n", ret);
+		goto exit;
+	}
+
+	/* This command typically does not return but jumps to an image */
+	sdp_handle(udc);
+	pr_err("SDP ended\n");
+
+exit:
+	g_dnl_unregister();
+exit_register:
+	udc_device_put(udc);
+
+	return CMD_RET_FAILURE;
+}
+
+U_BOOT_CMD(sdp, 2, 1, do_sdp,
+	"Serial Downloader Protocol",
+	"<USB_controller>\n"
+	"  - serial downloader protocol via <USB_controller>\n"
+);