xref: /OK3568_Linux_fs/kernel/arch/arm/mach-ebsa110/include/mach/uncompress.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  *  arch/arm/mach-ebsa110/include/mach/uncompress.h
4*4882a593Smuzhiyun  *
5*4882a593Smuzhiyun  *  Copyright (C) 1996,1997,1998 Russell King
6*4882a593Smuzhiyun  */
7*4882a593Smuzhiyun 
8*4882a593Smuzhiyun #include <linux/serial_reg.h>
9*4882a593Smuzhiyun 
10*4882a593Smuzhiyun #define SERIAL_BASE	((unsigned char *)0xf0000be0)
11*4882a593Smuzhiyun 
12*4882a593Smuzhiyun /*
13*4882a593Smuzhiyun  * This does not append a newline
14*4882a593Smuzhiyun  */
putc(int c)15*4882a593Smuzhiyun static inline void putc(int c)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun 	unsigned char v, *base = SERIAL_BASE;
18*4882a593Smuzhiyun 
19*4882a593Smuzhiyun 	do {
20*4882a593Smuzhiyun 		v = base[UART_LSR << 2];
21*4882a593Smuzhiyun 		barrier();
22*4882a593Smuzhiyun 	} while (!(v & UART_LSR_THRE));
23*4882a593Smuzhiyun 
24*4882a593Smuzhiyun 	base[UART_TX << 2] = c;
25*4882a593Smuzhiyun }
26*4882a593Smuzhiyun 
flush(void)27*4882a593Smuzhiyun static inline void flush(void)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun 	unsigned char v, *base = SERIAL_BASE;
30*4882a593Smuzhiyun 
31*4882a593Smuzhiyun 	do {
32*4882a593Smuzhiyun 		v = base[UART_LSR << 2];
33*4882a593Smuzhiyun 		barrier();
34*4882a593Smuzhiyun 	} while ((v & (UART_LSR_TEMT|UART_LSR_THRE)) !=
35*4882a593Smuzhiyun 		 (UART_LSR_TEMT|UART_LSR_THRE));
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun 
38*4882a593Smuzhiyun /*
39*4882a593Smuzhiyun  * nothing to do
40*4882a593Smuzhiyun  */
41*4882a593Smuzhiyun #define arch_decomp_setup()
42