1/* 2 * arch/arm/mach-at91/include/mach/debug-macro.S 3 * 4 * Copyright (C) 2003-2005 SAN People 5 * 6 * Debugging macro include header 7 * 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. 11 * 12*/ 13 14#include <mach/hardware.h> 15#include <mach/at91_dbgu.h> 16 17 .macro addruart, rx, tmp 18 mrc p15, 0, \rx, c1, c0 19 tst \rx, #1 @ MMU enabled? 20 ldreq \rx, =(AT91_BASE_SYS + AT91_DBGU) @ System peripherals (phys address) 21 ldrne \rx, =(AT91_VA_BASE_SYS + AT91_DBGU) @ System peripherals (virt address) 22 .endm 23 24 .macro senduart,rd,rx 25 strb \rd, [\rx, #(AT91_DBGU_THR - AT91_DBGU)] @ Write to Transmitter Holding Register 26 .endm 27 28 .macro waituart,rd,rx 291001: ldr \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)] @ Read Status Register 30 tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit 31 beq 1001b 32 .endm 33 34 .macro busyuart,rd,rx 351001: ldr \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)] @ Read Status Register 36 tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete 37 beq 1001b 38 .endm 39