Linux Kernel  3.7.1
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uncompress.h
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1 /*
2  * arch/arm/mach-netx/include/mach/uncompress.h
3  *
4  * Copyright (C) 2005 Sascha Hauer <[email protected]>, Pengutronix
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2
8  * as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  */
19 
20 /*
21  * The following code assumes the serial port has already been
22  * initialized by the bootloader. We search for the first enabled
23  * port in the most probable order. If you didn't setup a port in
24  * your bootloader then nothing will appear (which might be desired).
25  *
26  * This does not append a newline
27  */
28 
29 #define REG(x) (*(volatile unsigned long *)(x))
30 
31 #define UART1_BASE 0x100a00
32 #define UART2_BASE 0x100a80
33 
34 #define UART_DR 0x0
35 
36 #define UART_CR 0x14
37 #define CR_UART_EN (1<<0)
38 
39 #define UART_FR 0x18
40 #define FR_BUSY (1<<3)
41 #define FR_TXFF (1<<5)
42 
43 static void putc(char c)
44 {
45  unsigned long base;
46 
48  base = UART1_BASE;
49  else if (REG(UART2_BASE + UART_CR) & CR_UART_EN)
50  base = UART2_BASE;
51  else
52  return;
53 
54  while (REG(base + UART_FR) & FR_TXFF);
55  REG(base + UART_DR) = c;
56 }
57 
58 static inline void flush(void)
59 {
60  unsigned long base;
61 
63  base = UART1_BASE;
64  else if (REG(UART2_BASE + UART_CR) & CR_UART_EN)
65  base = UART2_BASE;
66  else
67  return;
68 
69  while (REG(base + UART_FR) & FR_BUSY);
70 }
71 
72 /*
73  * nothing to do
74  */
75 #define arch_decomp_setup()
76 #define arch_decomp_wdog()