1/*
2 * include/asm-arm/arch-at91/debug-macro.S
3 *
4 *  Copyright (C) 2003-2005 SAN People
5 *
6 * Debugging macro include header
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
14#include <asm/hardware.h>
15#include <asm/arch/at91_dbgu.h>
16
17	.macro	addruart,rx
18	mrc	p15, 0, \rx, c1, c0
19	tst	\rx, #1						@ MMU enabled?
20	ldreq	\rx, =(AT91_BASE_SYS + AT91_DBGU)		@ System peripherals (phys address)
21	ldrne	\rx, =(AT91_VA_BASE_SYS	+ AT91_DBGU)		@ System peripherals (virt address)
22	.endm
23
24	.macro	senduart,rd,rx
25	strb	\rd, [\rx, #(AT91_DBGU_THR - AT91_DBGU)]	@ Write to Transmitter Holding Register
26	.endm
27
28	.macro	waituart,rd,rx
291001:	ldr	\rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)]		@ Read Status Register
30	tst	\rd, #AT91_DBGU_TXRDY				@ DBGU_TXRDY = 1 when ready to transmit
31	beq	1001b
32	.endm
33
34	.macro	busyuart,rd,rx
351001:	ldr	\rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)]		@ Read Status Register
36	tst	\rd, #AT91_DBGU_TXEMPTY				@ DBGU_TXEMPTY = 1 when transmission complete
37	beq	1001b
38	.endm
39