1 /*
2  * arch/arm/mach-tegra/include/mach/uncompress.h
3  *
4  * Copyright (C) 2010 Google, Inc.
5  *
6  * Author:
7  *	Colin Cross <ccross@google.com>
8  *	Erik Gilling <konkers@google.com>
9  *
10  * This software is licensed under the terms of the GNU General Public
11  * License version 2, as published by the Free Software Foundation, and
12  * may be copied, distributed, and modified under those terms.
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  */
20 
21 #ifndef __MACH_TEGRA_UNCOMPRESS_H
22 #define __MACH_TEGRA_UNCOMPRESS_H
23 
24 #include <linux/types.h>
25 #include <linux/serial_reg.h>
26 
27 #include <mach/iomap.h>
28 
putc(int c)29 static void putc(int c)
30 {
31 	volatile u8 *uart = (volatile u8 *)TEGRA_DEBUG_UART_BASE;
32 	int shift = 2;
33 
34 	if (uart == NULL)
35 		return;
36 
37 	while (!(uart[UART_LSR << shift] & UART_LSR_THRE))
38 		barrier();
39 	uart[UART_TX << shift] = c;
40 }
41 
flush(void)42 static inline void flush(void)
43 {
44 }
45 
arch_decomp_setup(void)46 static inline void arch_decomp_setup(void)
47 {
48 	volatile u8 *uart = (volatile u8 *)TEGRA_DEBUG_UART_BASE;
49 	int shift = 2;
50 
51 	if (uart == NULL)
52 		return;
53 
54 	uart[UART_LCR << shift] |= UART_LCR_DLAB;
55 	uart[UART_DLL << shift] = 0x75;
56 	uart[UART_DLM << shift] = 0x0;
57 	uart[UART_LCR << shift] = 3;
58 }
59 
arch_decomp_wdog(void)60 static inline void arch_decomp_wdog(void)
61 {
62 }
63 
64 #endif
65