aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-arm/arch-sa1100/uncompress.h
blob: 43453501ee6688b56c47b7859b0079d671940485 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
/*
 * linux/include/asm-arm/arch-brutus/uncompress.h
 *
 * (C) 1999 Nicolas Pitre <nico@cam.org>
 *
 * Reorganised to be machine independent.
 */

#include "hardware.h"

/*
 * The following code assumes the serial port has already been
 * initialized by the bootloader.  We search for the first enabled
 * port in the most probable order.  If you didn't setup a port in
 * your bootloader then nothing will appear (which might be desired).
 */

#define UART(x)		(*(volatile unsigned long *)(serial_port + (x)))

static void putstr( const char *s )
{
	unsigned long serial_port;

	do {
		serial_port = _Ser3UTCR0;
		if (UART(UTCR3) & UTCR3_TXE) break;
		serial_port = _Ser1UTCR0;
		if (UART(UTCR3) & UTCR3_TXE) break;
		serial_port = _Ser2UTCR0;
		if (UART(UTCR3) & UTCR3_TXE) break;
		return;
	} while (0);

	for (; *s; s++) {
		/* wait for space in the UART's transmitter */
		while (!(UART(UTSR1) & UTSR1_TNF));

		/* send the character out. */
		UART(UTDR) = *s;

		/* if a LF, also do CR... */
		if (*s == 10) {
			while (!(UART(UTSR1) & UTSR1_TNF));
			UART(UTDR) = 13;
		}
	}
}

/*
 * Nothing to do for these
 */
#define arch_decomp_setup()
#define arch_decomp_wdog()