1/*
2 *  Copyright (C) 2003-2005 SAN People
3 *
4 * Debugging macro include header
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10*/
11
12#define AT91_DBGU_SR		(0x14)	/* Status Register */
13#define AT91_DBGU_THR		(0x1c)	/* Transmitter Holding Register */
14#define AT91_DBGU_TXRDY		(1 << 1)	/* Transmitter Ready */
15#define AT91_DBGU_TXEMPTY	(1 << 9)	/* Transmitter Empty */
16
17	.macro	addruart, rp, rv, tmp
18	ldr	\rp, =CONFIG_DEBUG_UART_PHYS		@ System peripherals (phys address)
19	ldr	\rv, =CONFIG_DEBUG_UART_VIRT		@ System peripherals (virt address)
20	.endm
21
22	.macro	senduart,rd,rx
23	strb	\rd, [\rx, #(AT91_DBGU_THR)]		@ Write to Transmitter Holding Register
24	.endm
25
26	.macro	waituart,rd,rx
271001:	ldr	\rd, [\rx, #(AT91_DBGU_SR)]		@ Read Status Register
28	tst	\rd, #AT91_DBGU_TXRDY			@ DBGU_TXRDY = 1 when ready to transmit
29	beq	1001b
30	.endm
31
32	.macro	busyuart,rd,rx
331001:	ldr	\rd, [\rx, #(AT91_DBGU_SR)]		@ Read Status Register
34	tst	\rd, #AT91_DBGU_TXEMPTY			@ DBGU_TXEMPTY = 1 when transmission complete
35	beq	1001b
36	.endm
37
38