cmd/lsblk.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2020
   4  * Niel Fourie, DENX Software Engineering, [email protected].
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9
  10 static int do_lsblk(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
  11 {
  12         struct driver *d = ll_entry_start(struct driver, driver);
  13         const int n_ents = ll_entry_count(struct driver, driver);
  14         struct driver *entry;
  15         struct udevice *udev;
  16         struct uclass *uc;
  17         struct blk_desc *desc;
  18         int ret, i;
  19
  20         ret = uclass_get(UCLASS_BLK, &uc);
  21         if (ret) {
  22                 puts("Could not get BLK uclass.\n");
  23                 return CMD_RET_FAILURE;
  24         }
  25         puts("Block Driver          Devices\n");
  26         puts("-----------------------------\n");
  27         for (entry = d; entry < d + n_ents; entry++) {
  28                 if (entry->id != UCLASS_BLK)
  29                         continue;
  30                 i = 0;
  31                 printf("%-20.20s", entry->name);
  32                 uclass_foreach_dev(udev, uc) {
  33                         if (udev->driver != entry)
  34                                 continue;
  35                         desc = dev_get_uclass_platdata(udev);
  36                         printf("%c %s %u", i ? ',' : ':',
  37                                blk_get_if_type_name(desc->if_type),
  38                                desc->devnum);
  39                         i++;
  40                 }
  41                 if (!i)
  42                         puts(": <none>");
  43                 puts("\n");
  44         }
  45
  46         return CMD_RET_SUCCESS;
  47 }
  48
  49 U_BOOT_CMD(lsblk, 1, 0, do_lsblk, "list block drivers and devices",
  50            "- display list of block device drivers and attached block devices"
  51 );