/*
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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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* Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved.
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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 <console.h>
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#include <g_dnl.h>
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#include <part.h>
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#include <usb.h>
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#include <usb_mass_storage.h>
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static int ums_read_sector(struct ums *ums_dev,
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ulong start, lbaint_t blkcnt, void *buf)
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{
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struct blk_desc *block_dev = &ums_dev->block_dev;
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lbaint_t blkstart = start + ums_dev->start_sector;
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return blk_dread(block_dev, blkstart, blkcnt, buf);
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}
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static int ums_write_sector(struct ums *ums_dev,
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ulong start, lbaint_t blkcnt, const void *buf)
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{
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struct blk_desc *block_dev = &ums_dev->block_dev;
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lbaint_t blkstart = start + ums_dev->start_sector;
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return blk_dwrite(block_dev, blkstart, blkcnt, buf);
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}
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static struct ums *ums;
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static int ums_count;
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static void ums_fini(void)
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{
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int i;
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for (i = 0; i < ums_count; i++)
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free((void *)ums[i].name);
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free(ums);
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ums = NULL;
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ums_count = 0;
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}
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#define UMS_NAME_LEN 16
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static int ums_init(const char *devtype, const char *devnums_part_str)
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{
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char *s, *t, *devnum_part_str, *name;
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struct blk_desc *block_dev;
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disk_partition_t info;
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int partnum;
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int ret = -1;
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struct ums *ums_new;
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s = strdup(devnums_part_str);
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if (!s)
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return -1;
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t = s;
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ums_count = 0;
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for (;;) {
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devnum_part_str = strsep(&t, ",");
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if (!devnum_part_str)
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break;
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partnum = blk_get_device_part_str(devtype, devnum_part_str,
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&block_dev, &info, 1);
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if (partnum < 0)
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goto cleanup;
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/* Check if the argument is in legacy format. If yes,
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* expose all partitions by setting the partnum = 0
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* e.g. ums 0 mmc 0
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*/
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if (!strchr(devnum_part_str, ':'))
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partnum = 0;
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/* f_mass_storage.c assumes SECTOR_SIZE sectors */
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if (block_dev->blksz != SECTOR_SIZE)
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goto cleanup;
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ums_new = realloc(ums, (ums_count + 1) * sizeof(*ums));
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if (!ums_new)
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goto cleanup;
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ums = ums_new;
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/* if partnum = 0, expose all partitions */
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if (partnum == 0) {
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ums[ums_count].start_sector = 0;
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ums[ums_count].num_sectors = block_dev->lba;
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} else {
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ums[ums_count].start_sector = info.start;
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ums[ums_count].num_sectors = info.size;
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}
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ums[ums_count].read_sector = ums_read_sector;
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ums[ums_count].write_sector = ums_write_sector;
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name = malloc(UMS_NAME_LEN);
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if (!name)
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goto cleanup;
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snprintf(name, UMS_NAME_LEN, "UMS disk %d", ums_count);
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ums[ums_count].name = name;
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ums[ums_count].block_dev = *block_dev;
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printf("UMS: LUN %d, dev %d, hwpart %d, sector %#x, count %#x\n",
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ums_count, ums[ums_count].block_dev.devnum,
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ums[ums_count].block_dev.hwpart,
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ums[ums_count].start_sector,
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ums[ums_count].num_sectors);
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ums_count++;
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}
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if (ums_count)
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ret = 0;
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cleanup:
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free(s);
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if (ret < 0)
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ums_fini();
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return ret;
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}
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static 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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const char *usb_controller;
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const char *devtype;
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const char *devnum;
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unsigned int controller_index;
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int rc;
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int cable_ready_timeout __maybe_unused;
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if (argc < 3)
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return CMD_RET_USAGE;
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usb_controller = argv[1];
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if (argc >= 4) {
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devtype = argv[2];
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devnum = argv[3];
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} else {
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devtype = "mmc";
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devnum = argv[2];
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}
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rc = ums_init(devtype, devnum);
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if (rc < 0)
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return CMD_RET_FAILURE;
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controller_index = (unsigned int)(simple_strtoul(
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usb_controller, NULL, 0));
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if (usb_gadget_initialize(controller_index)) {
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pr_err("Couldn't init USB controller.\n");
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rc = CMD_RET_FAILURE;
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goto cleanup_ums_init;
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}
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rc = fsg_init(ums, ums_count);
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if (rc) {
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pr_err("fsg_init failed");
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rc = CMD_RET_FAILURE;
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goto cleanup_board;
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}
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rc = g_dnl_register("usb_dnl_ums");
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if (rc) {
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pr_err("g_dnl_register failed");
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rc = CMD_RET_FAILURE;
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goto cleanup_board;
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}
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/* Timeout unit: seconds */
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cable_ready_timeout = UMS_CABLE_READY_TIMEOUT;
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if (!g_dnl_board_usb_cable_connected()) {
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/*
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* Won't execute if we don't know whether the cable is
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* connected.
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*/
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puts("Please connect USB cable.\n");
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while (!g_dnl_board_usb_cable_connected()) {
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if (ctrlc()) {
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puts("\rCTRL+C - Operation aborted.\n");
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rc = CMD_RET_SUCCESS;
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goto cleanup_register;
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}
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if (!cable_ready_timeout) {
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puts("\rUSB cable not detected.\n" \
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"Command exit.\n");
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rc = CMD_RET_SUCCESS;
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goto cleanup_register;
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}
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printf("\rAuto exit in: %.2d s.", cable_ready_timeout);
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mdelay(1000);
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cable_ready_timeout--;
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}
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puts("\r\n");
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}
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while (1) {
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usb_gadget_handle_interrupts(controller_index);
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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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rc = CMD_RET_SUCCESS;
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goto cleanup_register;
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}
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}
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cleanup_register:
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g_dnl_unregister();
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cleanup_board:
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usb_gadget_release(controller_index);
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cleanup_ums_init:
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ums_fini();
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return rc;
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}
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U_BOOT_CMD(ums, 4, 1, do_usb_mass_storage,
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"Use the UMS [USB Mass Storage]",
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"<USB_controller> [<devtype>] <dev[:part]> e.g. ums 0 mmc 0\n"
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" devtype defaults to mmc"
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);
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