blob: da333f69136f599cd7c0bd2645d654bd06dafd29 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/include/asm-arm/arch-imxads/uncompress.h
3 *
4 *
5 *
6 * Copyright (C) 1999 ARM Limited
7 * Copyright (C) Shane Nay (shane@minirl.com)
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24#define UART(x) (*(volatile unsigned long *)(serial_port + (x)))
25
26#define UART1_BASE 0x206000
27#define UART2_BASE 0x207000
28#define USR2 0x98
29#define USR2_TXFE (1<<14)
30#define TXR 0x40
31#define UCR1 0x80
32#define UCR1_UARTEN 1
33
34/*
35 * The following code assumes the serial port has already been
36 * initialized by the bootloader. We search for the first enabled
37 * port in the most probable order. If you didn't setup a port in
38 * your bootloader then nothing will appear (which might be desired).
39 *
40 * This does not append a newline
41 */
Russell Kinga0815682006-03-28 10:24:33 +010042static void putc(int c)
Linus Torvalds1da177e2005-04-16 15:20:36 -070043{
44 unsigned long serial_port;
45
46 do {
47 serial_port = UART1_BASE;
48 if ( UART(UCR1) & UCR1_UARTEN )
49 break;
50 serial_port = UART2_BASE;
51 if ( UART(UCR1) & UCR1_UARTEN )
52 break;
53 return;
54 } while(0);
55
Russell Kinga0815682006-03-28 10:24:33 +010056 while (!(UART(USR2) & USR2_TXFE))
57 barrier();
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
Russell Kinga0815682006-03-28 10:24:33 +010059 UART(TXR) = c;
60}
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
Russell Kinga0815682006-03-28 10:24:33 +010062static inline void flush(void)
63{
Linus Torvalds1da177e2005-04-16 15:20:36 -070064}
65
66/*
67 * nothing to do
68 */
69#define arch_decomp_setup()
70
71#define arch_decomp_wdog()