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ARM: 5855/1: putc support for nuc900 

putc support for nuc900

Signed-off-by: lijie <eltshanli@gmail.com>
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
wanzongshun 2009-12-18 18:00:37 +01:00 committed by Russell King
parent d76cdf2394
commit 040f04598c
1 changed files with 10 additions and 0 deletions
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10
arch/arm/mach-w90x900/include/mach/uncompress.h
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@ -22,11 +22,21 @@
#include <mach/regs-serial.h>
#include <mach/map.h>
#include <linux/serial_reg.h>
#define arch_decomp_wdog()
#define TX_DONE (UART_LSR_TEMT | UART_LSR_THRE)
static volatile u32 * uart_base = (u32 *)UART0_PA;
static void putc(int ch)
{
/* Check THRE and TEMT bits before we transmit the character.
*/
while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
barrier();
*uart_base = ch;
}
static inline void flush(void)