1 /*
2 * linux/include/asm-arm/arch-sa1100/uncompress.h
3 *
4 * (C) 1999 Nicolas Pitre <nico@cam.org>
5 *
6 * Reorganised to be machine independent.
7 */
8
9 #include "hardware.h"
10
11 /*
12 * The following code assumes the serial port has already been
13 * initialized by the bootloader. We search for the first enabled
14 * port in the most probable order. If you didn't setup a port in
15 * your bootloader then nothing will appear (which might be desired).
16 */
17
18 #define UART(x) (*(volatile unsigned long *)(serial_port + (x)))
19
20 static void putc(int c)
21 {
22 unsigned long serial_port;
23
24 do {
25 serial_port = _Ser3UTCR0;
26 if (UART(UTCR3) & UTCR3_TXE) break;
27 serial_port = _Ser1UTCR0;
28 if (UART(UTCR3) & UTCR3_TXE) break;
29 serial_port = _Ser2UTCR0;
30 if (UART(UTCR3) & UTCR3_TXE) break;
31 return;
32 } while (0);
33
34 /* wait for space in the UART's transmitter */
35 while (!(UART(UTSR1) & UTSR1_TNF))
36 barrier();
37
38 /* send the character out. */
39 UART(UTDR) = c;
40 }
41
42 static inline void flush(void)
43 {
44 }
45
46 /*
47 * Nothing to do for these
48 */
49 #define arch_decomp_setup()
50 #define arch_decomp_wdog()
51
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