Blame view

kernel/linux-rt-4.4.41/arch/arm/mach-sa1100/include/mach/uncompress.h 1.04 KB
5113f6f70   김현기   kernel add
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
  /*
   * arch/arm/mach-sa1100/include/mach/uncompress.h
   *
   * (C) 1999 Nicolas Pitre <nico@fluxnic.net>
   *
   * Reorganised to be machine independent.
   */
  
  #include "hardware.h"
  
  #define IOMEM(x)	(x)
  
  /*
   * 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 putc(int c)
  {
  	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);
  
  	/* wait for space in the UART's transmitter */
  	while (!(UART(UTSR1) & UTSR1_TNF))
  		barrier();
  
  	/* send the character out. */
  	UART(UTDR) = c;
  }
  
  static inline void flush(void)
  {
  }
  
  /*
   * Nothing to do for these
   */
  #define arch_decomp_setup()