mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 04:42:12 +00:00
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
|
/*
|
||
|
* Copyright 2003 ARM Limited
|
||
|
* Copyright 2008 Cavium Networks
|
||
|
*
|
||
|
* This file 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 <asm/mach-types.h>
|
||
|
#include <mach/cns3xxx.h>
|
||
|
|
||
|
#define AMBA_UART_DR(base) (*(volatile unsigned char *)((base) + 0x00))
|
||
|
#define AMBA_UART_LCRH(base) (*(volatile unsigned char *)((base) + 0x2c))
|
||
|
#define AMBA_UART_CR(base) (*(volatile unsigned char *)((base) + 0x30))
|
||
|
#define AMBA_UART_FR(base) (*(volatile unsigned char *)((base) + 0x18))
|
||
|
|
||
|
/*
|
||
|
* Return the UART base address
|
||
|
*/
|
||
|
static inline unsigned long get_uart_base(void)
|
||
|
{
|
||
|
if (machine_is_cns3420vb())
|
||
|
return CNS3XXX_UART0_BASE;
|
||
|
else
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* This does not append a newline
|
||
|
*/
|
||
|
static inline void putc(int c)
|
||
|
{
|
||
|
unsigned long base = get_uart_base();
|
||
|
|
||
|
while (AMBA_UART_FR(base) & (1 << 5))
|
||
|
barrier();
|
||
|
|
||
|
AMBA_UART_DR(base) = c;
|
||
|
}
|
||
|
|
||
|
static inline void flush(void)
|
||
|
{
|
||
|
unsigned long base = get_uart_base();
|
||
|
|
||
|
while (AMBA_UART_FR(base) & (1 << 3))
|
||
|
barrier();
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* nothing to do
|
||
|
*/
|
||
|
#define arch_decomp_setup()
|
||
|
#define arch_decomp_wdog()
|