linux/arch/mips/bcm63xx/early_printk.c
Maxime Bizon e7300d04bd MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs.
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-17 20:07:52 +02:00

30 lines
645 B
C

/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
*/
#include <linux/init.h>
#include <bcm63xx_io.h>
#include <bcm63xx_regs.h>
static void __init wait_xfered(void)
{
unsigned int val;
/* wait for any previous char to be transmitted */
do {
val = bcm_uart0_readl(UART_IR_REG);
if (val & UART_IR_STAT(UART_IR_TXEMPTY))
break;
} while (1);
}
void __init prom_putchar(char c)
{
wait_xfered();
bcm_uart0_writel(c, UART_FIFO_REG);
wait_xfered();
}