From e7300d04bd0809eb7ea10a2ed8c729459f816e36 Mon Sep 17 00:00:00 2001 From: Maxime Bizon Date: Tue, 18 Aug 2009 13:23:37 +0100 Subject: MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs. Signed-off-by: Maxime Bizon Signed-off-by: Florian Fainelli Signed-off-by: Ralf Baechle --- arch/mips/bcm63xx/early_printk.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 arch/mips/bcm63xx/early_printk.c (limited to 'arch/mips/bcm63xx/early_printk.c') diff --git a/arch/mips/bcm63xx/early_printk.c b/arch/mips/bcm63xx/early_printk.c new file mode 100644 index 000000000000..bf353c937df2 --- /dev/null +++ b/arch/mips/bcm63xx/early_printk.c @@ -0,0 +1,30 @@ +/* + * 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 + */ + +#include +#include +#include + +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(); +} -- cgit v1.2.3