[u-boot.git] / cmd / io.c

/*
 * Copyright (c) 2012 The Chromium OS Authors.
 *
 * SPDX-License-Identifier:     GPL-2.0+
 */

/*
 * IO space access commands.
 */

#include <common.h>
#include <command.h>
#include <asm/io.h>

/*
 * IO Display
 *
 * Syntax:
 *	iod{.b, .w, .l} {addr}
 */
int do_io_iod(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
	ulong addr;
	int size;

	if (argc != 2)
		return CMD_RET_USAGE;

	size = cmd_get_data_size(argv[0], 4);
	if (size < 0)
		return 1;

	addr = simple_strtoul(argv[1], NULL, 16);

	printf("%04x: ", (u16) addr);

	if (size == 4)
		printf("%08x\n", inl(addr));
	else if (size == 2)
		printf("%04x\n", inw(addr));
	else
		printf("%02x\n", inb(addr));

	return 0;
}

int do_io_iow(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
	ulong addr, val;
	int size;

	if (argc != 3)
		return CMD_RET_USAGE;

	size = cmd_get_data_size(argv[0], 4);
	if (size < 0)
		return 1;

	addr = simple_strtoul(argv[1], NULL, 16);
	val = simple_strtoul(argv[2], NULL, 16);

	if (size == 4)
		outl((u32) val, addr);
	else if (size == 2)
		outw((u16) val, addr);
	else
		outb((u8) val, addr);

	return 0;
}

/**************************************************/
U_BOOT_CMD(iod, 2, 0, do_io_iod,
	   "IO space display", "[.b, .w, .l] address");

U_BOOT_CMD(iow, 3, 0, do_io_iow,
	   "IO space modify",
	   "[.b, .w, .l] address value");
Commit	Line	Data
9ad557be VB	1	/*
	2	* Copyright (c) 2012 The Chromium OS Authors.
	3	*
1a459660	4	* SPDX-License-Identifier: GPL-2.0+
9ad557be VB	5	*/
	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	*/
	21	int 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
	47	int do_io_iow(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	48	{
9398b8ce TR	49	ulong addr, val;
9398b8ce TR	50	int size;
9ad557be VB	51
	52	if (argc != 3)
	53	return CMD_RET_USAGE;
	54
	55	size = cmd_get_data_size(argv[0], 4);
	56	if (size < 0)
	57	return 1;
	58
	59	addr = simple_strtoul(argv[1], NULL, 16);
	60	val = simple_strtoul(argv[2], NULL, 16);
	61
	62	if (size == 4)
	63	outl((u32) val, addr);
	64	else if (size == 2)
	65	outw((u16) val, addr);
	66	else
	67	outb((u8) val, addr);
	68
	69	return 0;
	70	}
	71
	72	/**************************************************/
	73	U_BOOT_CMD(iod, 2, 0, do_io_iod,
d641819c	74	"IO space display", "[.b, .w, .l] address");
9ad557be VB	75
9ad557be VB	76	U_BOOT_CMD(iow, 3, 0, do_io_iow,
d641819c BM	77	"IO space modify",
d641819c BM	78	"[.b, .w, .l] address value");