]> Git Repo - J-u-boot.git/blob - cmd/read.c
net: wget: integrate struct wget_info into legacy wget code
[J-u-boot.git] / cmd / read.c
1 /*
2  * Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
3  * Use of this source code is governed by a BSD-style license that can be
4  * found in the LICENSE file.
5  *
6  * Alternatively, this software may be distributed under the terms of the
7  * GNU General Public License ("GPL") version 2 as published by the Free
8  * Software Foundation.
9  */
10
11 #include <command.h>
12 #include <mapmem.h>
13 #include <part.h>
14 #include <vsprintf.h>
15
16 static int
17 do_rw(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
18 {
19         struct blk_desc *dev_desc = NULL;
20         struct disk_partition part_info;
21         ulong offset, limit;
22         uint blk, cnt, res;
23         void *ptr;
24         int part;
25
26         if (argc != 6) {
27                 cmd_usage(cmdtp);
28                 return 1;
29         }
30
31         part = part_get_info_by_dev_and_name_or_num(argv[1], argv[2],
32                                                     &dev_desc, &part_info, 1);
33         if (part < 0)
34                 return 1;
35
36         ptr = map_sysmem(hextoul(argv[3], NULL), 0);
37         blk = hextoul(argv[4], NULL);
38         cnt = hextoul(argv[5], NULL);
39
40         if (part > 0) {
41                 offset = part_info.start;
42                 limit = part_info.size;
43         } else {
44                 /* Largest address not available in struct blk_desc. */
45                 offset = 0;
46                 limit = ~0;
47         }
48
49         if (cnt + blk > limit) {
50                 printf("%s out of range\n", cmdtp->name);
51                 unmap_sysmem(ptr);
52                 return 1;
53         }
54
55         if (IS_ENABLED(CONFIG_CMD_WRITE) && !strcmp(cmdtp->name, "write"))
56                 res = blk_dwrite(dev_desc, offset + blk, cnt, ptr);
57         else
58                 res = blk_dread(dev_desc, offset + blk, cnt, ptr);
59         unmap_sysmem(ptr);
60
61         if (res != cnt) {
62                 printf("%s error\n", cmdtp->name);
63                 return 1;
64         }
65
66         return 0;
67 }
68
69 #ifdef CONFIG_CMD_READ
70 U_BOOT_CMD(
71         read,   6,      0,      do_rw,
72         "Load binary data from a partition",
73         "<interface> <dev[:part|#partname]> addr blk# cnt"
74 );
75 #endif
76
77 #ifdef CONFIG_CMD_WRITE
78 U_BOOT_CMD(
79         write,  6,      0,      do_rw,
80         "Store binary data to a partition",
81         "<interface> <dev[:part|#partname]> addr blk# cnt"
82 );
83 #endif
This page took 0.03324 seconds and 4 git commands to generate.