1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2011 Samsung Electronics
4 * Lukasz Majewski <l.majewski@samsung.com>
6 * Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved.
18 #include <usb_mass_storage.h>
21 static int ums_read_sector(struct ums *ums_dev,
22 ulong start, lbaint_t blkcnt, void *buf)
24 struct blk_desc *block_dev = &ums_dev->block_dev;
25 lbaint_t blkstart = start + ums_dev->start_sector;
27 return blk_dread(block_dev, blkstart, blkcnt, buf);
30 static int ums_write_sector(struct ums *ums_dev,
31 ulong start, lbaint_t blkcnt, const void *buf)
33 struct blk_desc *block_dev = &ums_dev->block_dev;
34 lbaint_t blkstart = start + ums_dev->start_sector;
36 return blk_dwrite(block_dev, blkstart, blkcnt, buf);
39 static struct ums *ums;
42 static void ums_fini(void)
46 for (i = 0; i < ums_count; i++)
47 free((void *)ums[i].name);
53 #define UMS_NAME_LEN 16
55 static int ums_init(const char *devtype, const char *devnums_part_str)
57 char *s, *t, *devnum_part_str, *name;
58 struct blk_desc *block_dev;
59 struct disk_partition info;
64 s = strdup(devnums_part_str);
72 devnum_part_str = strsep(&t, ",");
76 partnum = blk_get_device_part_str(devtype, devnum_part_str,
77 &block_dev, &info, 1);
82 /* Check if the argument is in legacy format. If yes,
83 * expose all partitions by setting the partnum = 0
86 if (!strchr(devnum_part_str, ':'))
89 /* f_mass_storage.c assumes SECTOR_SIZE sectors */
90 if (block_dev->blksz != SECTOR_SIZE)
93 ums_new = realloc(ums, (ums_count + 1) * sizeof(*ums));
98 /* if partnum = 0, expose all partitions */
100 ums[ums_count].start_sector = 0;
101 ums[ums_count].num_sectors = block_dev->lba;
103 ums[ums_count].start_sector = info.start;
104 ums[ums_count].num_sectors = info.size;
107 ums[ums_count].read_sector = ums_read_sector;
108 ums[ums_count].write_sector = ums_write_sector;
110 name = malloc(UMS_NAME_LEN);
113 snprintf(name, UMS_NAME_LEN, "UMS disk %d", ums_count);
114 ums[ums_count].name = name;
115 ums[ums_count].block_dev = *block_dev;
117 printf("UMS: LUN %d, dev %d, hwpart %d, sector %#x, count %#x\n",
118 ums_count, ums[ums_count].block_dev.devnum,
119 ums[ums_count].block_dev.hwpart,
120 ums[ums_count].start_sector,
121 ums[ums_count].num_sectors);
138 static int do_usb_mass_storage(struct cmd_tbl *cmdtp, int flag,
139 int argc, char *const argv[])
141 const char *usb_controller;
144 unsigned int controller_index;
146 int cable_ready_timeout __maybe_unused;
149 return CMD_RET_USAGE;
151 usb_controller = argv[1];
160 rc = ums_init(devtype, devnum);
162 return CMD_RET_FAILURE;
164 controller_index = (unsigned int)(simple_strtoul(
165 usb_controller, NULL, 0));
166 if (usb_gadget_initialize(controller_index)) {
167 pr_err("Couldn't init USB controller.\n");
168 rc = CMD_RET_FAILURE;
169 goto cleanup_ums_init;
172 rc = fsg_init(ums, ums_count);
174 pr_err("fsg_init failed\n");
175 rc = CMD_RET_FAILURE;
179 rc = g_dnl_register("usb_dnl_ums");
181 pr_err("g_dnl_register failed\n");
182 rc = CMD_RET_FAILURE;
186 /* Timeout unit: seconds */
187 cable_ready_timeout = UMS_CABLE_READY_TIMEOUT;
189 if (!g_dnl_board_usb_cable_connected()) {
191 * Won't execute if we don't know whether the cable is
194 puts("Please connect USB cable.\n");
196 while (!g_dnl_board_usb_cable_connected()) {
198 puts("\rCTRL+C - Operation aborted.\n");
199 rc = CMD_RET_SUCCESS;
200 goto cleanup_register;
202 if (!cable_ready_timeout) {
203 puts("\rUSB cable not detected.\n" \
205 rc = CMD_RET_SUCCESS;
206 goto cleanup_register;
209 printf("\rAuto exit in: %.2d s.", cable_ready_timeout);
211 cable_ready_timeout--;
217 usb_gadget_handle_interrupts(controller_index);
219 rc = fsg_main_thread(NULL);
221 /* Check I/O error */
223 printf("\rCheck USB cable connection\n");
227 printf("\rCTRL+C - Operation aborted\n");
229 rc = CMD_RET_SUCCESS;
230 goto cleanup_register;
239 usb_gadget_release(controller_index);
246 U_BOOT_CMD(ums, 4, 1, do_usb_mass_storage,
247 "Use the UMS [USB Mass Storage]",
248 "<USB_controller> [<devtype>] <dev[:part]> e.g. ums 0 mmc 0\n"
249 " devtype defaults to mmc"