diff options
author | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2009-08-30 19:15:51 +0000 |
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committer | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2009-08-30 19:15:51 +0000 |
commit | b887a6d197170b719028f31085876d8deaed35b6 (patch) | |
tree | 36b5045e64065dcb96b8da4d93ffe20fc286a711 /target/linux/ramips/files/arch/mips/ralink/rt288x/early_printk.c | |
parent | 237a5a2c34824a249326c1cb58c495ab4629baae (diff) |
[ramips] initial support for RT288x/RT305x
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17439 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ramips/files/arch/mips/ralink/rt288x/early_printk.c')
-rw-r--r-- | target/linux/ramips/files/arch/mips/ralink/rt288x/early_printk.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/target/linux/ramips/files/arch/mips/ralink/rt288x/early_printk.c b/target/linux/ramips/files/arch/mips/ralink/rt288x/early_printk.c new file mode 100644 index 0000000000..9fd7adb543 --- /dev/null +++ b/target/linux/ramips/files/arch/mips/ralink/rt288x/early_printk.c @@ -0,0 +1,30 @@ +/* + * Ralink RT288x SoC early printk support + * + * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/io.h> +#include <linux/serial_reg.h> + +#include <asm/addrspace.h> + +#include <asm/mach-ralink/rt288x_regs.h> + +#define UART_READ(r) \ + __raw_readl((void __iomem *)(KSEG1ADDR(RT2880_UART1_BASE) + 4 * (r))) + +#define UART_WRITE(r, v) \ + __raw_writel((v), (void __iomem *)(KSEG1ADDR(RT2880_UART1_BASE) + 4 * (r))) + +void prom_putchar(unsigned char ch) +{ + while (((UART_READ(UART_REG_LSR)) & UART_LSR_THRE) == 0); + UART_WRITE(UART_REG_TX, ch); + while (((UART_READ(UART_REG_LSR)) & UART_LSR_THRE) == 0); +} |