blob: 6450cb576b1e3fdcfbd64962137419e196e07649 [file] [log] [blame]
Vadim Bendebury9ad557b2012-12-05 14:46:42 +00001/*
2 * Copyright (c) 2012 The Chromium OS Authors.
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22
23/*
24 * IO space access commands.
25 */
26
27#include <common.h>
28#include <command.h>
29#include <asm/io.h>
30
31/*
32 * IO Display
33 *
34 * Syntax:
35 * iod{.b, .w, .l} {addr}
36 */
37int do_io_iod(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
38{
39 ulong addr;
40 int size;
41
42 if (argc != 2)
43 return CMD_RET_USAGE;
44
45 size = cmd_get_data_size(argv[0], 4);
46 if (size < 0)
47 return 1;
48
49 addr = simple_strtoul(argv[1], NULL, 16);
50
51 printf("%04x: ", (u16) addr);
52
53 if (size == 4)
54 printf("%08x\n", inl(addr));
55 else if (size == 2)
56 printf("%04x\n", inw(addr));
57 else
58 printf("%02x\n", inb(addr));
59
60 return 0;
61}
62
63int do_io_iow(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
64{
65 ulong addr, size, val;
66
67 if (argc != 3)
68 return CMD_RET_USAGE;
69
70 size = cmd_get_data_size(argv[0], 4);
71 if (size < 0)
72 return 1;
73
74 addr = simple_strtoul(argv[1], NULL, 16);
75 val = simple_strtoul(argv[2], NULL, 16);
76
77 if (size == 4)
78 outl((u32) val, addr);
79 else if (size == 2)
80 outw((u16) val, addr);
81 else
82 outb((u8) val, addr);
83
84 return 0;
85}
86
87/**************************************************/
88U_BOOT_CMD(iod, 2, 0, do_io_iod,
89 "IO space display", "[.b, .w, .l] address [# of objects]");
90
91U_BOOT_CMD(iow, 3, 0, do_io_iow,
92 "IO space modify (auto-incrementing address)",
93 "[.b, .w, .l] address");