2 * arch/arm/mach-at91/include/mach/debug-macro.S
4 * Copyright (C) 2003-2005 SAN People
6 * Debugging macro include header
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.
14 #include <mach/hardware.h>
15 #include <mach/at91_dbgu.h>
17 #if defined(CONFIG_AT91_DEBUG_LL_DBGU0)
18 #define AT91_DBGU AT91_BASE_DBGU0
20 #define AT91_DBGU AT91_BASE_DBGU1
23 .macro addruart, rp, rv, tmp
24 ldr \rp, =AT91_DBGU @ System peripherals (phys address)
25 ldr \rv, =AT91_IO_P2V(AT91_DBGU) @ System peripherals (virt address)
29 strb \rd, [\rx, #(AT91_DBGU_THR)] @ Write to Transmitter Holding Register
33 1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register
34 tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit
39 1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ Read Status Register
40 tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete