1 /*
2  * arch/arm/mach-sa1100/include/mach/uncompress.h
3  *
4  * (C) 1999 Nicolas Pitre <nico@fluxnic.net>
5  *
6  * Reorganised to be machine independent.
7  */
8 
9 #include "hardware.h"
10 
11 #define IOMEM(x)	(x)
12 
13 /*
14  * The following code assumes the serial port has already been
15  * initialized by the bootloader.  We search for the first enabled
16  * port in the most probable order.  If you didn't setup a port in
17  * your bootloader then nothing will appear (which might be desired).
18  */
19 
20 #define UART(x)		(*(volatile unsigned long *)(serial_port + (x)))
21 
22 static inline void putc(int c)
23 {
24 	unsigned long serial_port;
25 
26 	do {
27 		serial_port = _Ser3UTCR0;
28 		if (UART(UTCR3) & UTCR3_TXE) break;
29 		serial_port = _Ser1UTCR0;
30 		if (UART(UTCR3) & UTCR3_TXE) break;
31 		serial_port = _Ser2UTCR0;
32 		if (UART(UTCR3) & UTCR3_TXE) break;
33 		return;
34 	} while (0);
35 
36 	/* wait for space in the UART's transmitter */
37 	while (!(UART(UTSR1) & UTSR1_TNF))
38 		barrier();
39 
40 	/* send the character out. */
41 	UART(UTDR) = c;
42 }
43 
44 static inline void flush(void)
45 {
46 }
47 
48 /*
49  * Nothing to do for these
50  */
51 #define arch_decomp_setup()
52