1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (c) 2012 The Chromium OS Authors.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun /*
8*4882a593Smuzhiyun * IO space access commands.
9*4882a593Smuzhiyun */
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include <common.h>
12*4882a593Smuzhiyun #include <command.h>
13*4882a593Smuzhiyun #include <asm/io.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun /*
16*4882a593Smuzhiyun * IO Display
17*4882a593Smuzhiyun *
18*4882a593Smuzhiyun * Syntax:
19*4882a593Smuzhiyun * iod{.b, .w, .l} {addr}
20*4882a593Smuzhiyun */
do_io_iod(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])21*4882a593Smuzhiyun int do_io_iod(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun ulong addr;
24*4882a593Smuzhiyun int size;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun if (argc != 2)
27*4882a593Smuzhiyun return CMD_RET_USAGE;
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun size = cmd_get_data_size(argv[0], 4);
30*4882a593Smuzhiyun if (size < 0)
31*4882a593Smuzhiyun return 1;
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun addr = simple_strtoul(argv[1], NULL, 16);
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun printf("%04x: ", (u16) addr);
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun if (size == 4)
38*4882a593Smuzhiyun printf("%08x\n", inl(addr));
39*4882a593Smuzhiyun else if (size == 2)
40*4882a593Smuzhiyun printf("%04x\n", inw(addr));
41*4882a593Smuzhiyun else
42*4882a593Smuzhiyun printf("%02x\n", inb(addr));
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun return 0;
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
do_io_iow(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])47*4882a593Smuzhiyun int do_io_iow(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
48*4882a593Smuzhiyun {
49*4882a593Smuzhiyun ulong addr, val;
50*4882a593Smuzhiyun int size;
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun if (argc != 3)
53*4882a593Smuzhiyun return CMD_RET_USAGE;
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun size = cmd_get_data_size(argv[0], 4);
56*4882a593Smuzhiyun if (size < 0)
57*4882a593Smuzhiyun return 1;
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun addr = simple_strtoul(argv[1], NULL, 16);
60*4882a593Smuzhiyun val = simple_strtoul(argv[2], NULL, 16);
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun if (size == 4)
63*4882a593Smuzhiyun outl((u32) val, addr);
64*4882a593Smuzhiyun else if (size == 2)
65*4882a593Smuzhiyun outw((u16) val, addr);
66*4882a593Smuzhiyun else
67*4882a593Smuzhiyun outb((u8) val, addr);
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun return 0;
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun /**************************************************/
73*4882a593Smuzhiyun U_BOOT_CMD(iod, 2, 0, do_io_iod,
74*4882a593Smuzhiyun "IO space display", "[.b, .w, .l] address");
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun U_BOOT_CMD(iow, 3, 0, do_io_iow,
77*4882a593Smuzhiyun "IO space modify",
78*4882a593Smuzhiyun "[.b, .w, .l] address value");
79