mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-10 23:24:38 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
77 lines
1.3 KiB
C
77 lines
1.3 KiB
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, size, val;
|
|
|
|
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 [# of objects]");
|
|
|
|
U_BOOT_CMD(iow, 3, 0, do_io_iow,
|
|
"IO space modify (auto-incrementing address)",
|
|
"[.b, .w, .l] address");
|