diff options
| author | Maxime Bizon <mbizon@freebox.fr> | 2009-08-18 14:23:37 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-09-17 20:07:52 +0200 |
| commit | e7300d04bd0809eb7ea10a2ed8c729459f816e36 (patch) | |
| tree | 8af589d3954c09323d3f74e69aa6fabbb32e049e /arch/mips/bcm63xx/early_printk.c | |
| parent | MIPS: BCM63xx: Add Broadcom 63xx CPU definitions. (diff) | |
| download | linux-e7300d04bd0809eb7ea10a2ed8c729459f816e36.tar.xz linux-e7300d04bd0809eb7ea10a2ed8c729459f816e36.zip | |
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>
Diffstat (limited to 'arch/mips/bcm63xx/early_printk.c')
| -rw-r--r-- | arch/mips/bcm63xx/early_printk.c | 30 |
1 files changed, 30 insertions, 0 deletions
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 <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(); +} |