git.sur5r.net Git - u-boot/blob - common/cmd_usb_mass_storage.c

   1 /*
   2  * Copyright (C) 2011 Samsung Electronics
   3  * Lukasz Majewski <l.majewski@samsung.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <errno.h>
   9 #include <common.h>
  10 #include <command.h>
  11 #include <console.h>
  12 #include <g_dnl.h>
  13 #include <part.h>
  14 #include <usb.h>
  15 #include <usb_mass_storage.h>
  16
  17 static int ums_read_sector(struct ums *ums_dev,
  18                            ulong start, lbaint_t blkcnt, void *buf)
  19 {
  20         block_dev_desc_t *block_dev = ums_dev->block_dev;
  21         lbaint_t blkstart = start + ums_dev->start_sector;
  22
  23         return block_dev->block_read(block_dev, blkstart, blkcnt, buf);
  24 }
  25
  26 static int ums_write_sector(struct ums *ums_dev,
  27                             ulong start, lbaint_t blkcnt, const void *buf)
  28 {
  29         block_dev_desc_t *block_dev = ums_dev->block_dev;
  30         lbaint_t blkstart = start + ums_dev->start_sector;
  31
  32         return block_dev->block_write(block_dev, blkstart, blkcnt, buf);
  33 }
  34
  35 static struct ums ums_dev = {
  36         .read_sector = ums_read_sector,
  37         .write_sector = ums_write_sector,
  38         .name = "UMS disk",
  39 };
  40
  41 struct ums *ums_init(const char *devtype, const char *devnum)
  42 {
  43         block_dev_desc_t *block_dev;
  44         int ret;
  45
  46         ret = get_device(devtype, devnum, &block_dev);
  47         if (ret < 0)
  48                 return NULL;
  49
  50         /* f_mass_storage.c assumes SECTOR_SIZE sectors */
  51         if (block_dev->blksz != SECTOR_SIZE)
  52                 return NULL;
  53
  54         ums_dev.block_dev = block_dev;
  55         ums_dev.start_sector = 0;
  56         ums_dev.num_sectors = block_dev->lba;
  57
  58         printf("UMS: disk start sector: %#x, count: %#x\n",
  59                ums_dev.start_sector, ums_dev.num_sectors);
  60
  61         return &ums_dev;
  62 }
  63
  64 int do_usb_mass_storage(cmd_tbl_t *cmdtp, int flag,
  65                                int argc, char * const argv[])
  66 {
  67         const char *usb_controller;
  68         const char *devtype;
  69         const char *devnum;
  70         struct ums *ums;
  71         unsigned int controller_index;
  72         int rc;
  73         int cable_ready_timeout __maybe_unused;
  74
  75         if (argc < 3)
  76                 return CMD_RET_USAGE;
  77
  78         usb_controller = argv[1];
  79         if (argc >= 4) {
  80                 devtype = argv[2];
  81                 devnum  = argv[3];
  82         } else {
  83                 devtype = "mmc";
  84                 devnum  = argv[2];
  85         }
  86
  87         ums = ums_init(devtype, devnum);
  88         if (!ums)
  89                 return CMD_RET_FAILURE;
  90
  91         controller_index = (unsigned int)(simple_strtoul(
  92                                 usb_controller, NULL, 0));
  93         if (board_usb_init(controller_index, USB_INIT_DEVICE)) {
  94                 error("Couldn't init USB controller.");
  95                 return CMD_RET_FAILURE;
  96         }
  97
  98         rc = fsg_init(ums);
  99         if (rc) {
 100                 error("fsg_init failed");
 101                 return CMD_RET_FAILURE;
 102         }
 103
 104         rc = g_dnl_register("usb_dnl_ums");
 105         if (rc) {
 106                 error("g_dnl_register failed");
 107                 return CMD_RET_FAILURE;
 108         }
 109
 110         /* Timeout unit: seconds */
 111         cable_ready_timeout = UMS_CABLE_READY_TIMEOUT;
 112
 113         if (!g_dnl_board_usb_cable_connected()) {
 114                 /*
 115                  * Won't execute if we don't know whether the cable is
 116                  * connected.
 117                  */
 118                 puts("Please connect USB cable.\n");
 119
 120                 while (!g_dnl_board_usb_cable_connected()) {
 121                         if (ctrlc()) {
 122                                 puts("\rCTRL+C - Operation aborted.\n");
 123                                 goto exit;
 124                         }
 125                         if (!cable_ready_timeout) {
 126                                 puts("\rUSB cable not detected.\n" \
 127                                      "Command exit.\n");
 128                                 goto exit;
 129                         }
 130
 131                         printf("\rAuto exit in: %.2d s.", cable_ready_timeout);
 132                         mdelay(1000);
 133                         cable_ready_timeout--;
 134                 }
 135                 puts("\r\n");
 136         }
 137
 138         while (1) {
 139                 usb_gadget_handle_interrupts(controller_index);
 140
 141                 rc = fsg_main_thread(NULL);
 142                 if (rc) {
 143                         /* Check I/O error */
 144                         if (rc == -EIO)
 145                                 printf("\rCheck USB cable connection\n");
 146
 147                         /* Check CTRL+C */
 148                         if (rc == -EPIPE)
 149                                 printf("\rCTRL+C - Operation aborted\n");
 150
 151                         goto exit;
 152                 }
 153         }
 154 exit:
 155         g_dnl_unregister();
 156         board_usb_cleanup(controller_index, USB_INIT_DEVICE);
 157         return CMD_RET_SUCCESS;
 158 }
 159
 160 U_BOOT_CMD(ums, 4, 1, do_usb_mass_storage,
 161         "Use the UMS [USB Mass Storage]",
 162         "<USB_controller> [<devtype>] <devnum>  e.g. ums 0 mmc 0\n"
 163         "    devtype defaults to mmc"
 164 );