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/*
* arch/arm/mach-at91/include/mach/debug-macro.S
*
* Copyright (C) 2003-2005 SAN People
*
* Debugging macro include header
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <mach/hardware.h>
#include <mach/at91_dbgu.h>
.macro addruart,rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
ldreq \rx, =(AT91_BASE_SYS + AT91_DBGU) @ System peripherals (phys address)
ldrne \rx, =(AT91_VA_BASE_SYS + AT91_DBGU) @ System peripherals (virt address)
.endm
.macro senduart,rd,rx
strb \rd, [\rx, #(AT91_DBGU_THR - AT91_DBGU)] @ Write to Transmitter Holding Register
.endm
.macro waituart,rd,rx
1001: ldr \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)] @ Read Status Register
tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit
beq 1001b
.endm
.macro busyuart,rd,rx
1001: ldr \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)] @ Read Status Register
tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete
beq 1001b
.endm
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