cmd: add sdp command

Add a new command to start USB Serial Download Protocol (SDP)
state machine.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Łukasz Majewski <lukma@denx.de>
Reviewed-by: Stefano Babic <sbabic@denx.de>

diff --git a/cmd/Kconfig b/cmd/Kconfig
index 42d955c96aee9520bd68462b09ed01ff47b03f82..d6d130edfa917c7f6af938be710e0f4e581d8276 100644 (file)
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -895,6 +895,13 @@ config CMD_USB
        help
          USB support.
 
+config CMD_USB_SDP
+       bool "sdp"
+       select USB_FUNCTION_SDP
+       help
+         Enables the command "sdp" which is used to have U-Boot emulating the
+         Serial Download Protocol (SDP) via USB.
+
 config CMD_USB_MASS_STORAGE
        bool "UMS usb mass storage"
        help

diff --git a/cmd/Makefile b/cmd/Makefile
index 4a865bd7d7540e6769d7c287071a6b062c8b2f85..2a5b8ce82577528c4195adb1d887c94e01f7a416 100644 (file)
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -132,6 +132,7 @@ obj-$(CONFIG_CMD_FASTBOOT) += fastboot.o
 obj-$(CONFIG_CMD_FS_UUID) += fs_uuid.o
 
 obj-$(CONFIG_CMD_USB_MASS_STORAGE) += usb_mass_storage.o
+obj-$(CONFIG_CMD_USB_SDP) += usb_gadget_sdp.o
 obj-$(CONFIG_CMD_THOR_DOWNLOAD) += thordown.o
 obj-$(CONFIG_CMD_XIMG) += ximg.o
 obj-$(CONFIG_CMD_YAFFS2) += yaffs2.o

diff --git a/cmd/usb_gadget_sdp.c b/cmd/usb_gadget_sdp.c
new file mode 100644 (file)
index 0000000..b1d8b28
--- /dev/null
+++ b/cmd/usb_gadget_sdp.c
@@ -0,0 +1,50 @@
+/*
+ * cmd_sdp.c -- sdp command
+ *
+ * Copyright (C) 2016 Toradex
+ * Author: Stefan Agner <stefan.agner@toradex.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <g_dnl.h>
+#include <sdp.h>
+#include <usb.h>
+
+static int do_sdp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+       int ret = CMD_RET_FAILURE;
+
+       if (argc < 2)
+               return CMD_RET_USAGE;
+
+       char *usb_controller = argv[1];
+       int controller_index = simple_strtoul(usb_controller, NULL, 0);
+       board_usb_init(controller_index, USB_INIT_DEVICE);
+
+       g_dnl_clear_detach();
+       g_dnl_register("usb_dnl_sdp");
+
+       ret = sdp_init(controller_index);
+       if (ret) {
+               error("SDP init failed: %d", ret);
+               goto exit;
+       }
+
+       /* This command typically does not return but jumps to an image */
+       sdp_handle(controller_index);
+       error("SDP ended");
+
+exit:
+       g_dnl_unregister();
+       board_usb_cleanup(controller_index, USB_INIT_DEVICE);
+
+       return ret;
+}
+
+U_BOOT_CMD(sdp, 2, 1, do_sdp,
+       "Serial Downloader Protocol",
+       "<USB_controller>\n"
+       "  - serial downloader protocol via <USB_controller>\n"
+);