tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* 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 orrne \rx, \rx, #0x00b00000
19 add \rx,\rx,#3 @ Uart regs are at off set of 3 if
20 @ byte writes used - Big Endian.
21 .endm
22
23 .macro senduart,rd,rx
24 strb \rd, [\rx]
25 .endm
26
27 .macro waituart,rd,rx
281002: ldrb \rd, [\rx, #0x14]
29 and \rd, \rd, #0x60 @ check THRE and TEMT bits
30 teq \rd, #0x60
31 bne 1002b
32 .endm
33
34 .macro busyuart,rd,rx
35 .endm