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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 19:54:53 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 20:01:40 (GMT) |
| commit | ae19ffbadc1b2100285a5b5b3d0a4e0a11390904 (patch) | |
| tree | 3c2086ab67398a019089a47ca3f362a4bc6db74f /arch/mips/bcm63xx/early_printk.c | |
| parent | 34e84f39a27d059a3e6ec6e8b94aafa702e6f220 (diff) | |
| parent | 9173a8ef24a6b1b8031507b35b8ffe5f85a87692 (diff) | |
| download | linux-fsl-qoriq-ae19ffbadc1b2100285a5b5b3d0a4e0a11390904.tar.xz | |
Merge branch 'master' into for-linus
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 0000000..bf353c9 --- /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(); +} |