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/*
* xen/arch/arm/arm32/debug.S
*
* Wrapper for early printk
*
* Julien Grall <julien.grall@linaro.org>
* Copyright (c) 2013 Linaro Limited.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <asm/config.h>
#ifdef EARLY_PRINTK_INC
#include EARLY_PRINTK_INC
#endif
.globl early_putch
/* Print a character on the UART - this function is called by C
* r0: character to print */
early_putch:
ldr r1, =FIXMAP_ADDR(FIXMAP_CONSOLE) /* r1 := VA UART base address */
early_uart_ready r1, r2
early_uart_transmit r1, r0
mov pc, lr
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