| /* |
| * 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(); |
| } |