1 /*
2  * arch/arm/plat-spear/include/plat/uncompress.h
3  *
4  * Serial port stubs for kernel decompress status messages
5  *
6  * Copyright (C) 2009 ST Microelectronics
7  * Viresh Kumar <vireshk@kernel.org>
8  *
9  * This file is licensed under the terms of the GNU General Public
10  * License version 2. This program is licensed "as is" without any
11  * warranty of any kind, whether express or implied.
12  */
13 
14 #include <linux/io.h>
15 #include <linux/amba/serial.h>
16 #include <mach/spear.h>
17 
18 #ifndef __PLAT_UNCOMPRESS_H
19 #define __PLAT_UNCOMPRESS_H
20 /*
21  * This does not append a newline
22  */
putc(int c)23 static inline void putc(int c)
24 {
25 	void __iomem *base = (void __iomem *)SPEAR_DBG_UART_BASE;
26 
27 	while (readl_relaxed(base + UART01x_FR) & UART01x_FR_TXFF)
28 		barrier();
29 
30 	writel_relaxed(c, base + UART01x_DR);
31 }
32 
flush(void)33 static inline void flush(void)
34 {
35 }
36 
37 /*
38  * nothing to do
39  */
40 #define arch_decomp_setup()
41 
42 #endif /* __PLAT_UNCOMPRESS_H */
43