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 int blk_common_cmd(int argc, char * const argv[], enum if_type if_type,
  15                    int *cur_devnump)
  16 {
  17         const char *if_name = blk_get_if_type_name(if_type);
  18
  19         switch (argc) {
  20         case 0:
  21         case 1:
  22                 return CMD_RET_USAGE;
  23         case 2:
  24                 if (strncmp(argv[1], "inf", 3) == 0) {
  25                         blk_list_devices(if_type);
  26                         return 0;
  27                 } else if (strncmp(argv[1], "dev", 3) == 0) {
  28                         if (blk_print_device_num(if_type, *cur_devnump)) {
  29                                 printf("\nno %s devices available\n", if_name);
  30                                 return CMD_RET_FAILURE;
  31                         }
  32                         return 0;
  33                 } else if (strncmp(argv[1], "part", 4) == 0) {
  34                         if (blk_list_part(if_type))
  35                                 printf("\nno %s devices available\n", if_name);
  36                         return 0;
  37                 }
  38                 return CMD_RET_USAGE;
  39         case 3:
  40                 if (strncmp(argv[1], "dev", 3) == 0) {
  41                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
  42
  43                         if (!blk_show_device(if_type, dev)) {
  44                                 *cur_devnump = dev;
  45                                 printf("... is now current device\n");
  46                         } else {
  47                                 return CMD_RET_FAILURE;
  48                         }
  49                         return 0;
  50                 } else if (strncmp(argv[1], "part", 4) == 0) {
  51                         int dev = (int)simple_strtoul(argv[2], NULL, 10);
  52
  53                         if (blk_print_part_devnum(if_type, dev)) {
  54                                 printf("\n%s device %d not available\n",
  55                                        if_name, dev);
  56                                 return CMD_RET_FAILURE;
  57                         }
  58                         return 0;
  59                 }
  60                 return CMD_RET_USAGE;
  61
  62         default: /* at least 4 args */
  63                 if (strcmp(argv[1], "read") == 0) {
  64                         ulong addr = simple_strtoul(argv[2], NULL, 16);
  65                         lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
  66                         ulong cnt = simple_strtoul(argv[4], NULL, 16);
  67                         ulong n;
  68
  69                         printf("\n%s read: device %d block # "LBAFU", count %lu ... ",
  70                                if_name, *cur_devnump, blk, cnt);
  71
  72                         n = blk_read_devnum(if_type, *cur_devnump, blk, cnt,
  73                                             (ulong *)addr);
  74
  75                         printf("%ld blocks read: %s\n", n,
  76                                n == cnt ? "OK" : "ERROR");
  77                         return n == cnt ? 0 : 1;
  78                 } else if (strcmp(argv[1], "write") == 0) {
  79                         ulong addr = simple_strtoul(argv[2], NULL, 16);
  80                         lbaint_t blk = simple_strtoul(argv[3], NULL, 16);
  81                         ulong cnt = simple_strtoul(argv[4], NULL, 16);
  82                         ulong n;
  83
  84                         printf("\n%s write: device %d block # "LBAFU", count %lu ... ",
  85                                if_name, *cur_devnump, blk, cnt);
  86
  87                         n = blk_write_devnum(if_type, *cur_devnump, blk, cnt,
  88                                              (ulong *)addr);
  89
  90                         printf("%ld blocks written: %s\n", n,
  91                                n == cnt ? "OK" : "ERROR");
  92                         return n == cnt ? 0 : 1;
  93                 } else {
  94                         return CMD_RET_USAGE;
  95                 }
  96         }
  97 }