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| /*
| * 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");
|
|
