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https://github.com/smaeul/u-boot.git
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b528f71394
This patch adds the USB Mass Storage Gadget to u-boot New command called "ums" is implemented to provide access to on-device embedded persistent memory. USB Mass Storage is supposed to work on top of the USB Gadget framework Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> CC: Marek Vasut <marek.vasut@gmail.com>
87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
/*
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* Copyright (C) 2011 Samsung Electronics
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* Lukasz Majewski <l.majewski@samsung.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <errno.h>
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#include <common.h>
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#include <command.h>
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#include <g_dnl.h>
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#include <usb_mass_storage.h>
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int do_usb_mass_storage(cmd_tbl_t *cmdtp, int flag,
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int argc, char * const argv[])
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{
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char *ep;
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unsigned int dev_num = 0, offset = 0, part_size = 0;
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int rc;
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struct ums_board_info *ums_info;
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static char *s = "ums";
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if (argc < 2) {
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printf("usage: ums <dev> - e.g. ums 0\n");
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return 0;
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}
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dev_num = (int)simple_strtoul(argv[1], &ep, 16);
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if (dev_num) {
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puts("\nSet eMMC device to 0! - e.g. ums 0\n");
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goto fail;
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}
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board_usb_init();
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ums_info = board_ums_init(dev_num, offset, part_size);
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if (!ums_info) {
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printf("MMC: %d -> NOT available\n", dev_num);
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goto fail;
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}
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rc = fsg_init(ums_info);
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if (rc) {
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printf("cmd ums: fsg_init failed\n");
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goto fail;
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}
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g_dnl_register(s);
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while (1) {
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/* Handle control-c and timeouts */
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if (ctrlc()) {
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printf("The remote end did not respond in time.\n");
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goto exit;
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}
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usb_gadget_handle_interrupts();
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/* Check if USB cable has been detached */
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if (fsg_main_thread(NULL) == EIO)
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goto exit;
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}
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exit:
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g_dnl_unregister();
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return 0;
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fail:
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return -1;
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}
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U_BOOT_CMD(ums, CONFIG_SYS_MAXARGS, 1, do_usb_mass_storage,
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"Use the UMS [User Mass Storage]",
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"ums - User Mass Storage Gadget"
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);
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