cmd/blk_common.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Handling of common block commands
   4  *
   5  * Copyright (c) 2017 Google, Inc
   6  *
   7  * (C) Copyright 2000-2011
   8  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   9  */
  10
  11 #include <common.h>
  12 #include <blk.h>
  13
  14 #ifdef CONFIG_HAVE_BLOCK_DEVICE
  15 int blk_common_cmd(int argc, char * const argv[], enum if_type if_type,
  16                    int *cur_devnump)
  17 {
  18         const char *if_name = blk_get_if_type_name(if_type);
  19
  20         switch (argc) {
  21         case 0:
  22         case 1:
  23                 return CMD_RET_USAGE;
  24         case 2:
  25                 if (strncmp(argv[1], "inf", 3) == 0) {
  26                         blk_list_devices(if_type);
  27                         return 0;
  28                 } else if (strncmp(argv[1], "dev", 3) == 0) {
  29                         if (blk_print_device_num(if_type, *cur_devnump)) {
  30                                 printf("\nno %s devices available\n", if_name);
  31                                 return CMD_RET_FAILURE;
  32                         }
  33                         return 0;
  34                 } else if (strncmp(argv[1], "part", 4) == 0) {
  35                         if (blk_list_part(if_type))
  36                                 printf("\nno %s devices available\n", if_name);
  37                         return 0;
  38                 }
  39                 return CMD_RET_USAGE;
  40         case 3:
  41                 if (strncmp(argv[1], "dev", 3) == 0) {
  42                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
  43
  44                         if (!blk_show_device(if_type, dev)) {
  45                                 *cur_devnump = dev;
  46                                 printf("... is now current device\n");
  47                         } else {
  48                                 return CMD_RET_FAILURE;
  49                         }
  50                         return 0;
  51                 } else if (strncmp(argv[1], "part", 4) == 0) {
  52                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
  53
  54                         if (blk_print_part_devnum(if_type, dev)) {
  55                                 printf("\n%s device %d not available\n",
  56                                        if_name, dev);
  57                                 return CMD_RET_FAILURE;
  58                         }
  59                         return 0;
  60                 }
  61                 return CMD_RET_USAGE;
  62
  63         default: /* at least 4 args */
  64                 if (strcmp(argv[1], "read") == 0) {
  65                         ulong addr = simple_strtoul(argv[2], NULL, 16);
  66                         lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
  67                         ulong cnt = simple_strtoul(argv[4], NULL, 16);
  68                         ulong n;
  69
  70                         printf("\n%s read: device %d block # "LBAFU", count %lu ... ",
  71                                if_name, *cur_devnump, blk, cnt);
  72
  73                         n = blk_read_devnum(if_type, *cur_devnump, blk, cnt,
  74                                             (ulong *)addr);
  75
  76                         printf("%ld blocks read: %s\n", n,
  77                                n == cnt ? "OK" : "ERROR");
  78                         return n == cnt ? 0 : 1;
  79                 } else if (strcmp(argv[1], "write") == 0) {
  80                         ulong addr = simple_strtoul(argv[2], NULL, 16);
  81                         lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
  82                         ulong cnt = simple_strtoul(argv[4], NULL, 16);
  83                         ulong n;
  84
  85                         printf("\n%s write: device %d block # "LBAFU", count %lu ... ",
  86                                if_name, *cur_devnump, blk, cnt);
  87
  88                         n = blk_write_devnum(if_type, *cur_devnump, blk, cnt,
  89                                              (ulong *)addr);
  90
  91                         printf("%ld blocks written: %s\n", n,
  92                                n == cnt ? "OK" : "ERROR");
  93                         return n == cnt ? 0 : 1;
  94                 } else {
  95                         return CMD_RET_USAGE;
  96                 }
  97         }
  98 }
  99 #endif