upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/common/cmd_io.c

93 lines
2.1 KiB

/*
* Copyright (c) 2012 The Chromium OS Authors.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/*
* 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");