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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* linux/include/asm-arm/arch-ixp4xx/debug-macro.S
2 *
3 * Debugging macro include header
4 *
5 * Copyright (C) 1994-1999 Russell King
6 * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11*/
12
13 .macro addruart,rx
14 mrc p15, 0, \rx, c1, c0
15 tst \rx, #1 @ MMU enabled?
16 moveq \rx, #0xc8000000
17 movne \rx, #0xff000000
18 add \rx,\rx,#3 @ Uart regs are at off set of 3 if
19 @ byte writes used - Big Endian.
20 .endm
21
22 .macro senduart,rd,rx
23 strb \rd, [\rx]
24 .endm
25
26 .macro waituart,rd,rx
271002: ldrb \rd, [\rx, #0x14]
28 and \rd, \rd, #0x60 @ check THRE and TEMT bits
29 teq \rd, #0x60
30 bne 1002b
31 .endm
32
33 .macro busyuart,rd,rx
34 .endm