1 /* 2 * Copyright (C) 2011 Samsung Electronics 3 * Lukasz Majewski <l.majewski@samsung.com> 4 * 5 * Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved. 6 * 7 * SPDX-License-Identifier: GPL-2.0+ 8 */ 9 10 #include <errno.h> 11 #include <common.h> 12 #include <command.h> 13 #include <console.h> 14 #include <g_dnl.h> 15 #include <part.h> 16 #include <usb.h> 17 #include <usb_mass_storage.h> 18 19 static int ums_read_sector(struct ums *ums_dev, 20 ulong start, lbaint_t blkcnt, void *buf) 21 { 22 struct blk_desc *block_dev = &ums_dev->block_dev; 23 lbaint_t blkstart = start + ums_dev->start_sector; 24 25 return block_dev->block_read(block_dev, blkstart, blkcnt, buf); 26 } 27 28 static int ums_write_sector(struct ums *ums_dev, 29 ulong start, lbaint_t blkcnt, const void *buf) 30 { 31 struct blk_desc *block_dev = &ums_dev->block_dev; 32 lbaint_t blkstart = start + ums_dev->start_sector; 33 34 return block_dev->block_write(block_dev, blkstart, blkcnt, buf); 35 } 36 37 static struct ums *ums; 38 static int ums_count; 39 40 static void ums_fini(void) 41 { 42 int i; 43 44 for (i = 0; i < ums_count; i++) 45 free((void *)ums[i].name); 46 free(ums); 47 ums = 0; 48 ums_count = 0; 49 } 50 51 #define UMS_NAME_LEN 16 52 53 static int ums_init(const char *devtype, const char *devnums) 54 { 55 char *s, *t, *devnum, *name; 56 struct blk_desc *block_dev; 57 int ret; 58 struct ums *ums_new; 59 60 s = strdup(devnums); 61 if (!s) 62 return -1; 63 64 t = s; 65 ums_count = 0; 66 67 for (;;) { 68 devnum = strsep(&t, ","); 69 if (!devnum) 70 break; 71 72 ret = get_device(devtype, devnum, &block_dev); 73 if (ret < 0) 74 goto cleanup; 75 76 /* f_mass_storage.c assumes SECTOR_SIZE sectors */ 77 if (block_dev->blksz != SECTOR_SIZE) { 78 ret = -1; 79 goto cleanup; 80 } 81 82 ums_new = realloc(ums, (ums_count + 1) * sizeof(*ums)); 83 if (!ums_new) { 84 ret = -1; 85 goto cleanup; 86 } 87 ums = ums_new; 88 89 ums[ums_count].read_sector = ums_read_sector; 90 ums[ums_count].write_sector = ums_write_sector; 91 ums[ums_count].start_sector = 0; 92 ums[ums_count].num_sectors = block_dev->lba; 93 name = malloc(UMS_NAME_LEN); 94 if (!name) { 95 ret = -1; 96 goto cleanup; 97 } 98 snprintf(name, UMS_NAME_LEN, "UMS disk %d", ums_count); 99 ums[ums_count].name = name; 100 ums[ums_count].block_dev = *block_dev; 101 102 printf("UMS: LUN %d, dev %d, hwpart %d, sector %#x, count %#x\n", 103 ums_count, ums[ums_count].block_dev.dev, 104 ums[ums_count].block_dev.hwpart, 105 ums[ums_count].start_sector, 106 ums[ums_count].num_sectors); 107 108 ums_count++; 109 } 110 111 if (!ums_count) 112 ret = -1; 113 else 114 ret = 0; 115 116 cleanup: 117 free(s); 118 119 if (ret < 0) 120 ums_fini(); 121 122 return ret; 123 } 124 125 int do_usb_mass_storage(cmd_tbl_t *cmdtp, int flag, 126 int argc, char * const argv[]) 127 { 128 const char *usb_controller; 129 const char *devtype; 130 const char *devnum; 131 unsigned int controller_index; 132 int rc; 133 int cable_ready_timeout __maybe_unused; 134 135 if (argc < 3) 136 return CMD_RET_USAGE; 137 138 usb_controller = argv[1]; 139 if (argc >= 4) { 140 devtype = argv[2]; 141 devnum = argv[3]; 142 } else { 143 devtype = "mmc"; 144 devnum = argv[2]; 145 } 146 147 rc = ums_init(devtype, devnum); 148 if (rc < 0) 149 return CMD_RET_FAILURE; 150 151 controller_index = (unsigned int)(simple_strtoul( 152 usb_controller, NULL, 0)); 153 if (board_usb_init(controller_index, USB_INIT_DEVICE)) { 154 error("Couldn't init USB controller."); 155 rc = CMD_RET_FAILURE; 156 goto cleanup_ums_init; 157 } 158 159 rc = fsg_init(ums, ums_count); 160 if (rc) { 161 error("fsg_init failed"); 162 rc = CMD_RET_FAILURE; 163 goto cleanup_board; 164 } 165 166 rc = g_dnl_register("usb_dnl_ums"); 167 if (rc) { 168 error("g_dnl_register failed"); 169 rc = CMD_RET_FAILURE; 170 goto cleanup_board; 171 } 172 173 /* Timeout unit: seconds */ 174 cable_ready_timeout = UMS_CABLE_READY_TIMEOUT; 175 176 if (!g_dnl_board_usb_cable_connected()) { 177 /* 178 * Won't execute if we don't know whether the cable is 179 * connected. 180 */ 181 puts("Please connect USB cable.\n"); 182 183 while (!g_dnl_board_usb_cable_connected()) { 184 if (ctrlc()) { 185 puts("\rCTRL+C - Operation aborted.\n"); 186 rc = CMD_RET_SUCCESS; 187 goto cleanup_register; 188 } 189 if (!cable_ready_timeout) { 190 puts("\rUSB cable not detected.\n" \ 191 "Command exit.\n"); 192 rc = CMD_RET_SUCCESS; 193 goto cleanup_register; 194 } 195 196 printf("\rAuto exit in: %.2d s.", cable_ready_timeout); 197 mdelay(1000); 198 cable_ready_timeout--; 199 } 200 puts("\r\n"); 201 } 202 203 while (1) { 204 usb_gadget_handle_interrupts(controller_index); 205 206 rc = fsg_main_thread(NULL); 207 if (rc) { 208 /* Check I/O error */ 209 if (rc == -EIO) 210 printf("\rCheck USB cable connection\n"); 211 212 /* Check CTRL+C */ 213 if (rc == -EPIPE) 214 printf("\rCTRL+C - Operation aborted\n"); 215 216 rc = CMD_RET_SUCCESS; 217 goto cleanup_register; 218 } 219 } 220 221 cleanup_register: 222 g_dnl_unregister(); 223 cleanup_board: 224 board_usb_cleanup(controller_index, USB_INIT_DEVICE); 225 cleanup_ums_init: 226 ums_fini(); 227 228 return rc; 229 } 230 231 U_BOOT_CMD(ums, 4, 1, do_usb_mass_storage, 232 "Use the UMS [USB Mass Storage]", 233 "<USB_controller> [<devtype>] <devnum> e.g. ums 0 mmc 0\n" 234 " devtype defaults to mmc" 235 ); 236