diff options
Diffstat (limited to 'arch/mips/loongson/common/early_printk.c')
| -rw-r--r-- | arch/mips/loongson/common/early_printk.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/arch/mips/loongson/common/early_printk.c b/arch/mips/loongson/common/early_printk.c index bc73edc0cfd..23e7a8f8897 100644 --- a/arch/mips/loongson/common/early_printk.c +++ b/arch/mips/loongson/common/early_printk.c | |||
| @@ -1,7 +1,7 @@ | |||
| 1 | /* early printk support | 1 | /* early printk support |
| 2 | * | 2 | * |
| 3 | * Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca> | 3 | * Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca> |
| 4 | * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology | 4 | * Copyright (c) 2009 Lemote Inc. |
| 5 | * Author: Wu Zhangjin, wuzj@lemote.com | 5 | * Author: Wu Zhangjin, wuzj@lemote.com |
| 6 | * | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it | 7 | * This program is free software; you can redistribute it and/or modify it |
| @@ -12,26 +12,29 @@ | |||
| 12 | #include <linux/serial_reg.h> | 12 | #include <linux/serial_reg.h> |
| 13 | 13 | ||
| 14 | #include <loongson.h> | 14 | #include <loongson.h> |
| 15 | #include <machine.h> | ||
| 16 | 15 | ||
| 17 | #define PORT(base, offset) (u8 *)(base + offset) | 16 | #define PORT(base, offset) (u8 *)(base + offset) |
| 18 | 17 | ||
| 19 | static inline unsigned int serial_in(phys_addr_t base, int offset) | 18 | static inline unsigned int serial_in(unsigned char *base, int offset) |
| 20 | { | 19 | { |
| 21 | return readb(PORT(base, offset)); | 20 | return readb(PORT(base, offset)); |
| 22 | } | 21 | } |
| 23 | 22 | ||
| 24 | static inline void serial_out(phys_addr_t base, int offset, int value) | 23 | static inline void serial_out(unsigned char *base, int offset, int value) |
| 25 | { | 24 | { |
| 26 | writeb(value, PORT(base, offset)); | 25 | writeb(value, PORT(base, offset)); |
| 27 | } | 26 | } |
| 28 | 27 | ||
| 29 | void prom_putchar(char c) | 28 | void prom_putchar(char c) |
| 30 | { | 29 | { |
| 31 | phys_addr_t uart_base = | 30 | int timeout; |
| 32 | (phys_addr_t) ioremap_nocache(LOONGSON_UART_BASE, 8); | 31 | unsigned char *uart_base; |
| 33 | 32 | ||
| 34 | while ((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0) | 33 | uart_base = (unsigned char *)_loongson_uart_base; |
| 34 | timeout = 1024; | ||
| 35 | |||
| 36 | while (((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0) && | ||
| 37 | (timeout-- > 0)) | ||
| 35 | ; | 38 | ; |
| 36 | 39 | ||
| 37 | serial_out(uart_base, UART_TX, c); | 40 | serial_out(uart_base, UART_TX, c); |
