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.
16 #include <usb_mass_storage.h>
18 static int ums_read_sector(struct ums
*ums_dev
,
19 ulong start
, lbaint_t blkcnt
, void *buf
)
21 struct blk_desc
*block_dev
= &ums_dev
->block_dev
;
22 lbaint_t blkstart
= start
+ ums_dev
->start_sector
;
24 return blk_dread(block_dev
, blkstart
, blkcnt
, buf
);
27 static int ums_write_sector(struct ums
*ums_dev
,
28 ulong start
, lbaint_t blkcnt
, const void *buf
)
30 struct blk_desc
*block_dev
= &ums_dev
->block_dev
;
31 lbaint_t blkstart
= start
+ ums_dev
->start_sector
;
33 return blk_dwrite(block_dev
, blkstart
, blkcnt
, buf
);
36 static struct ums
*ums
;
39 static void ums_fini(void)
43 for (i
= 0; i
< ums_count
; i
++)
44 free((void *)ums
[i
].name
);
50 #define UMS_NAME_LEN 16
52 static int ums_init(const char *devtype
, const char *devnums_part_str
)
54 char *s
, *t
, *devnum_part_str
, *name
;
55 struct blk_desc
*block_dev
;
56 disk_partition_t info
;
61 s
= strdup(devnums_part_str
);
69 devnum_part_str
= strsep(&t
, ",");
73 partnum
= blk_get_device_part_str(devtype
, devnum_part_str
,
74 &block_dev
, &info
, 1);
79 /* Check if the argument is in legacy format. If yes,
80 * expose all partitions by setting the partnum = 0
83 if (!strchr(devnum_part_str
, ':'))
86 /* f_mass_storage.c assumes SECTOR_SIZE sectors */
87 if (block_dev
->blksz
!= SECTOR_SIZE
)
90 ums_new
= realloc(ums
, (ums_count
+ 1) * sizeof(*ums
));
95 /* if partnum = 0, expose all partitions */
97 ums
[ums_count
].start_sector
= 0;
98 ums
[ums_count
].num_sectors
= block_dev
->lba
;
100 ums
[ums_count
].start_sector
= info
.start
;
101 ums
[ums_count
].num_sectors
= info
.size
;
104 ums
[ums_count
].read_sector
= ums_read_sector
;
105 ums
[ums_count
].write_sector
= ums_write_sector
;
107 name
= malloc(UMS_NAME_LEN
);
110 snprintf(name
, UMS_NAME_LEN
, "UMS disk %d", ums_count
);
111 ums
[ums_count
].name
= name
;
112 ums
[ums_count
].block_dev
= *block_dev
;
114 printf("UMS: LUN %d, dev %d, hwpart %d, sector %#x, count %#x\n",
115 ums_count
, ums
[ums_count
].block_dev
.devnum
,
116 ums
[ums_count
].block_dev
.hwpart
,
117 ums
[ums_count
].start_sector
,
118 ums
[ums_count
].num_sectors
);
135 static int do_usb_mass_storage(cmd_tbl_t
*cmdtp
, int flag
,
136 int argc
, char * const argv
[])
138 const char *usb_controller
;
141 unsigned int controller_index
;
143 int cable_ready_timeout __maybe_unused
;
146 return CMD_RET_USAGE
;
148 usb_controller
= argv
[1];
157 rc
= ums_init(devtype
, devnum
);
159 return CMD_RET_FAILURE
;
161 controller_index
= (unsigned int)(simple_strtoul(
162 usb_controller
, NULL
, 0));
163 if (board_usb_init(controller_index
, USB_INIT_DEVICE
)) {
164 pr_err("Couldn't init USB controller.\n");
165 rc
= CMD_RET_FAILURE
;
166 goto cleanup_ums_init
;
169 rc
= fsg_init(ums
, ums_count
);
171 pr_err("fsg_init failed\n");
172 rc
= CMD_RET_FAILURE
;
176 rc
= g_dnl_register("usb_dnl_ums");
178 pr_err("g_dnl_register failed\n");
179 rc
= CMD_RET_FAILURE
;
183 /* Timeout unit: seconds */
184 cable_ready_timeout
= UMS_CABLE_READY_TIMEOUT
;
186 if (!g_dnl_board_usb_cable_connected()) {
188 * Won't execute if we don't know whether the cable is
191 puts("Please connect USB cable.\n");
193 while (!g_dnl_board_usb_cable_connected()) {
195 puts("\rCTRL+C - Operation aborted.\n");
196 rc
= CMD_RET_SUCCESS
;
197 goto cleanup_register
;
199 if (!cable_ready_timeout
) {
200 puts("\rUSB cable not detected.\n" \
202 rc
= CMD_RET_SUCCESS
;
203 goto cleanup_register
;
206 printf("\rAuto exit in: %.2d s.", cable_ready_timeout
);
208 cable_ready_timeout
--;
214 usb_gadget_handle_interrupts(controller_index
);
216 rc
= fsg_main_thread(NULL
);
218 /* Check I/O error */
220 printf("\rCheck USB cable connection\n");
224 printf("\rCTRL+C - Operation aborted\n");
226 rc
= CMD_RET_SUCCESS
;
227 goto cleanup_register
;
234 board_usb_cleanup(controller_index
, USB_INIT_DEVICE
);
241 U_BOOT_CMD(ums
, 4, 1, do_usb_mass_storage
,
242 "Use the UMS [USB Mass Storage]",
243 "<USB_controller> [<devtype>] <dev[:part]> e.g. ums 0 mmc 0\n"
244 " devtype defaults to mmc"