debug-macro.S
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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>
#if defined(CONFIG_AT91_DEBUG_LL_DBGU0)
#define AT91_DBGU AT91_BASE_DBGU0
#else
#define AT91_DBGU AT91_BASE_DBGU1
#endif
.macro addruart, rp, rv, tmp
ldr \rp, =AT91_DBGU @ System peripherals (phys address)
ldr \rv, =AT91_IO_P2V(AT91_DBGU) @ System peripherals (virt address)
.endm
.macro senduart,rd,rx
strb \rd, [\rx, #(AT91_DBGU_THR)] @ Write to Transmitter Holding Register
.endm
.macro waituart,rd,rx
1001: ldr \rd, [\rx, #(AT91_DBGU_SR)] @ 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)] @ Read Status Register
tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete
beq 1001b
.endm