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1 | /* |
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 | */ | |
37 | int 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 | ||
63 | int 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 | /**************************************************/ | |
88 | U_BOOT_CMD(iod, 2, 0, do_io_iod, | |
89 | "IO space display", "[.b, .w, .l] address [# of objects]"); | |
90 | ||
91 | U_BOOT_CMD(iow, 3, 0, do_io_iow, | |
92 | "IO space modify (auto-incrementing address)", | |
93 | "[.b, .w, .l] address"); |