blob: eefac36f87e9b235595437d1fce637be39c9c723 [file] [log] [blame]
Vadim Bendebury9ad557b2012-12-05 14:46:42 +00001/*
2 * Copyright (c) 2012 The Chromium OS Authors.
3 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02004 * SPDX-License-Identifier: GPL-2.0+
Vadim Bendebury9ad557b2012-12-05 14:46:42 +00005 */
6
7/*
8 * IO space access commands.
9 */
10
11#include <common.h>
12#include <command.h>
13#include <asm/io.h>
14
15/*
16 * IO Display
17 *
18 * Syntax:
19 * iod{.b, .w, .l} {addr}
20 */
21int do_io_iod(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
22{
23 ulong addr;
24 int size;
25
26 if (argc != 2)
27 return CMD_RET_USAGE;
28
29 size = cmd_get_data_size(argv[0], 4);
30 if (size < 0)
31 return 1;
32
33 addr = simple_strtoul(argv[1], NULL, 16);
34
35 printf("%04x: ", (u16) addr);
36
37 if (size == 4)
38 printf("%08x\n", inl(addr));
39 else if (size == 2)
40 printf("%04x\n", inw(addr));
41 else
42 printf("%02x\n", inb(addr));
43
44 return 0;
45}
46
47int do_io_iow(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
48{
49 ulong addr, size, val;
50
51 if (argc != 3)
52 return CMD_RET_USAGE;
53
54 size = cmd_get_data_size(argv[0], 4);
55 if (size < 0)
56 return 1;
57
58 addr = simple_strtoul(argv[1], NULL, 16);
59 val = simple_strtoul(argv[2], NULL, 16);
60
61 if (size == 4)
62 outl((u32) val, addr);
63 else if (size == 2)
64 outw((u16) val, addr);
65 else
66 outb((u8) val, addr);
67
68 return 0;
69}
70
71/**************************************************/
72U_BOOT_CMD(iod, 2, 0, do_io_iod,
73 "IO space display", "[.b, .w, .l] address [# of objects]");
74
75U_BOOT_CMD(iow, 3, 0, do_io_iow,
76 "IO space modify (auto-incrementing address)",
77 "[.b, .w, .l] address");