2 * Copyright (C) 2003-2005 SAN People
4 * Debugging macro include header
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.
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 */
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)
23 strb \rd, [\rx, #(AT91_DBGU_THR)] @ Write to Transmitter Holding Register
27 1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register
28 tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit
33 1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register
34 tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete