dfu:cmd: Support for DFU u-boot command

Support for u-boot's command line command "dfu <interface> <dev> [list]".

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Vasut <marex@denx.de>

common/Makefile

@@ -184,6 +184,7 @@ COBJS-$(CONFIG_MENU) += menu.o
 COBJS-$(CONFIG_MODEM_SUPPORT) += modem.o
 COBJS-$(CONFIG_UPDATE_TFTP) += update.o
 COBJS-$(CONFIG_USB_KEYBOARD) += usb_kbd.o
+COBJS-$(CONFIG_CMD_DFU) += cmd_dfu.o
 endif
 
 ifdef CONFIG_SPL_BUILD

common/cmd_dfu.c

@@ -0,0 +1,81 @@
+/*
+ * cmd_dfu.c -- dfu command
+ *
+ * Copyright (C) 2012 Samsung Electronics
+ * authors: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *	    Lukasz Majewski <l.majewski@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <dfu.h>
+#include <asm/errno.h>
+#include <g_dnl.h>
+
+static int do_dfu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	const char *str_env;
+	char s[] = "dfu";
+	char *env_bkp;
+	int ret;
+
+	if (argc < 3)
+		return CMD_RET_USAGE;
+
+	str_env = getenv("dfu_alt_info");
+	if (str_env == NULL) {
+		printf("%s: \"dfu_alt_info\" env variable not defined!\n",
+		       __func__);
+		return CMD_RET_FAILURE;
+	}
+
+	env_bkp = strdup(str_env);
+	ret = dfu_config_entities(env_bkp, argv[1],
+			    (int)simple_strtoul(argv[2], NULL, 10));
+	if (ret)
+		return CMD_RET_FAILURE;
+
+	if (strcmp(argv[3], "list") == 0) {
+		dfu_show_entities();
+		goto done;
+	}
+
+	board_usb_init();
+	g_dnl_register(s);
+	while (1) {
+		if (ctrlc())
+			goto exit;
+
+		usb_gadget_handle_interrupts();
+	}
+exit:
+	g_dnl_unregister();
+done:
+	dfu_free_entities();
+	free(env_bkp);
+
+	return CMD_RET_SUCCESS;
+}
+
+U_BOOT_CMD(dfu, CONFIG_SYS_MAXARGS, 1, do_dfu,
+	"Device Firmware Upgrade",
+	"<interface> <dev> [list]\n"
+	"  - device firmware upgrade on a device <dev>\n"
+	"    attached to interface <interface>\n"
+	"    [list] - list available alt settings"
+);