summaryrefslogtreecommitdiffstats
path: root/arch/mips/loongson/common/early_printk.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-17 16:38:06 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-17 16:38:06 -0800
commitdbfc985195410dad803c845743c63cd73bd1fe32 (patch)
tree6bf6dbecb92539285ebb89948e63e691a0947941 /arch/mips/loongson/common/early_printk.c
parent7c508e50be47737b9a72d0f15c3ef1146925e2d2 (diff)
parent606d62fa02cf1da43c6e21521650fff07a2e56d1 (diff)
downloadblackbird-op-linux-dbfc985195410dad803c845743c63cd73bd1fe32.tar.gz
blackbird-op-linux-dbfc985195410dad803c845743c63cd73bd1fe32.zip
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (71 commits) MIPS: Lasat: Fix botched changes to sysctl code. RTC: rtc-cmos.c: Fix warning on MIPS MIPS: Cleanup random differences beween lmo and Linus' kernel. MIPS: No longer hardwire CONFIG_EMBEDDED to y MIPS: Fix and enhance built-in kernel command line MIPS: eXcite: Remove platform. MIPS: Loongson: Cleanups of serial port support MIPS: Lemote 2F: Suspend CS5536 MFGPT Timer MIPS: Excite: move iodev_remove to .devexit.text MIPS: Lasat: Convert to proc_fops / seq_file MIPS: Cleanup signal code initialization MIPS: Modularize COP2 handling MIPS: Move EARLY_PRINTK to Kconfig.debug MIPS: Yeeloong 2F: Cleanup reset logic using the new ec_write function MIPS: Yeeloong 2F: Add LID open event as the wakeup event MIPS: Yeeloong 2F: Add basic EC operations MIPS: Move several variables from .bss to .init.data MIPS: Tracing: Make function graph tracer work with -mmcount-ra-address MIPS: Tracing: Reserve $12(t0) for mcount-ra-address of gcc 4.5 MIPS: Tracing: Make ftrace for MIPS work without -fno-omit-frame-pointer ...
Diffstat (limited to 'arch/mips/loongson/common/early_printk.c')
-rw-r--r--arch/mips/loongson/common/early_printk.c17
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 bc73edc0cfd8..23e7a8f8897f 100644
--- a/arch/mips/loongson/common/early_printk.c
+++ b/arch/mips/loongson/common/early_printk.c
@@ -1,7 +1,7 @@
/* early printk support
*
* Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca>
- * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
+ * Copyright (c) 2009 Lemote Inc.
* Author: Wu Zhangjin, wuzj@lemote.com
*
* This program is free software; you can redistribute it and/or modify it
@@ -12,26 +12,29 @@
#include <linux/serial_reg.h>
#include <loongson.h>
-#include <machine.h>
#define PORT(base, offset) (u8 *)(base + offset)
-static inline unsigned int serial_in(phys_addr_t base, int offset)
+static inline unsigned int serial_in(unsigned char *base, int offset)
{
return readb(PORT(base, offset));
}
-static inline void serial_out(phys_addr_t base, int offset, int value)
+static inline void serial_out(unsigned char *base, int offset, int value)
{
writeb(value, PORT(base, offset));
}
void prom_putchar(char c)
{
- phys_addr_t uart_base =
- (phys_addr_t) ioremap_nocache(LOONGSON_UART_BASE, 8);
+ int timeout;
+ unsigned char *uart_base;
- while ((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0)
+ uart_base = (unsigned char *)_loongson_uart_base;
+ timeout = 1024;
+
+ while (((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0) &&
+ (timeout-- > 0))
;
serial_out(uart_base, UART_TX, c);
OpenPOWER on IntegriCloud