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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