1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *  arch/arm/mach-ebsa110/include/mach/uncompress.h
4  *
5  *  Copyright (C) 1996,1997,1998 Russell King
6  */
7 
8 #include <linux/serial_reg.h>
9 
10 #define SERIAL_BASE	((unsigned char *)0xf0000be0)
11 
12 /*
13  * This does not append a newline
14  */
putc(int c)15 static inline void putc(int c)
16 {
17 	unsigned char v, *base = SERIAL_BASE;
18 
19 	do {
20 		v = base[UART_LSR << 2];
21 		barrier();
22 	} while (!(v & UART_LSR_THRE));
23 
24 	base[UART_TX << 2] = c;
25 }
26 
flush(void)27 static inline void flush(void)
28 {
29 	unsigned char v, *base = SERIAL_BASE;
30 
31 	do {
32 		v = base[UART_LSR << 2];
33 		barrier();
34 	} while ((v & (UART_LSR_TEMT|UART_LSR_THRE)) !=
35 		 (UART_LSR_TEMT|UART_LSR_THRE));
36 }
37 
38 /*
39  * nothing to do
40  */
41 #define arch_decomp_setup()
42