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 <blk.h>
   8 #include <command.h>
   9 #include <dm.h>
  10
  11 static int do_lsblk(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
  12 {
  13         struct driver *d = ll_entry_start(struct driver, driver);
  14         const int n_ents = ll_entry_count(struct driver, driver);
  15         struct driver *entry;
  16         struct udevice *udev;
  17         struct uclass *uc;
  18         struct blk_desc *desc;
  19         int ret, i;
  20
  21         ret = uclass_get(UCLASS_BLK, &uc);
  22         if (ret) {
  23                 puts("Could not get BLK uclass.\n");
  24                 return CMD_RET_FAILURE;
  25         }
  26         puts("Block Driver          Devices\n");
  27         puts("-----------------------------\n");
  28         for (entry = d; entry < d + n_ents; entry++) {
  29                 if (entry->id != UCLASS_BLK)
  30                         continue;
  31                 i = 0;
  32                 printf("%-20.20s", entry->name);
  33                 uclass_foreach_dev(udev, uc) {
  34                         if (udev->driver != entry)
  35                                 continue;
  36                         desc = dev_get_uclass_plat(udev);
  37                         printf("%c %s %u", i ? ',' : ':',
  38                                blk_get_uclass_name(desc->uclass_id),
  39                                desc->devnum);
  40                         i++;
  41                 }
  42                 if (!i)
  43                         puts(": <none>");
  44                 puts("\n");
  45         }
  46
  47         return CMD_RET_SUCCESS;
  48 }
  49
  50 U_BOOT_CMD(lsblk, 1, 0, do_lsblk, "list block drivers and devices",
  51            "- display list of block device drivers and attached block devices"
  52 );