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https://github.com/smaeul/u-boot.git
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351e9b2069
This patch allows exiting from UMS mode to u-boot prompt by detaching usb cable or by pressing ctrl+c. Add new config: CONFIG_USB_CABLE_CHECK. If defined then board file should provide function: usb_cable_connected() (include/usb.h) that return 1 if cable is connected and 0 otherwise. Changes v2: - add a note to the README Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Marek Vasut <marex@denx.de>
70 lines
1.4 KiB
C
70 lines
1.4 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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* SPDX-License-Identifier: GPL-2.0+
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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.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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if (argc < 3)
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return CMD_RET_USAGE;
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const char *usb_controller = argv[1];
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const char *mmc_devstring = argv[2];
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unsigned int dev_num = simple_strtoul(mmc_devstring, NULL, 0);
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struct ums *ums = ums_init(dev_num);
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if (!ums)
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return CMD_RET_FAILURE;
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unsigned int controller_index = (unsigned int)(simple_strtoul(
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usb_controller, NULL, 0));
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if (board_usb_init(controller_index, USB_INIT_DEVICE)) {
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error("Couldn't init USB controller.");
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return CMD_RET_FAILURE;
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}
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int rc = fsg_init(ums);
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if (rc) {
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error("fsg_init failed");
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return CMD_RET_FAILURE;
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}
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g_dnl_register("ums");
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while (1) {
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usb_gadget_handle_interrupts();
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rc = fsg_main_thread(NULL);
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if (rc) {
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/* Check I/O error */
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if (rc == -EIO)
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printf("\rCheck USB cable connection\n");
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/* Check CTRL+C */
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if (rc == -EPIPE)
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printf("\rCTRL+C - Operation aborted\n");
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goto exit;
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}
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}
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exit:
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g_dnl_unregister();
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return CMD_RET_SUCCESS;
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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 <USB_controller> <mmc_dev> e.g. ums 0 0"
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);
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