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[ARM] 4663/1: Only putc uncompressor output into FFUART if it was enabled by the bootloader 

Also, use existing register and bit definitions instead of numbers.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Philipp Zabel 2007-11-22 17:57:30 +01:00 committed by Russell King
parent 6bc54e6992
commit 49db76eb5f
1 changed files with 7 additions and 2 deletions
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9
include/asm-arm/arch-pxa/uncompress.h
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@ -9,6 +9,9 @@
* published by the Free Software Foundation.
*/
#include <linux/serial_reg.h>
#include <asm/arch/pxa-regs.h>
#define FFUART ((volatile unsigned long *)0x40100000)
#define BTUART ((volatile unsigned long *)0x40200000)
#define STUART ((volatile unsigned long *)0x40700000)
@ -19,9 +22,11 @@
static inline void putc(char c)
{
while (!(UART[5] & 0x20))
if (!(UART[UART_IER] & IER_UUE))
return;
while (!(UART[UART_LSR] & LSR_TDRQ))
barrier();
UART[0] = c;
UART[UART_TX] = c;
}
/*