1 /* arch/arm/mach-zynq/include/mach/uncompress.h
2  *
3  *  Copyright (C) 2011 Xilinx
4  *
5  * This software is licensed under the terms of the GNU General Public
6  * License version 2, as published by the Free Software Foundation, and
7  * may be copied, distributed, and modified under those terms.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  */
14 
15 #ifndef __MACH_UNCOMPRESS_H__
16 #define __MACH_UNCOMPRESS_H__
17 
18 #include <linux/io.h>
19 #include <asm/processor.h>
20 #include <mach/zynq_soc.h>
21 #include <mach/uart.h>
22 
arch_decomp_setup(void)23 void arch_decomp_setup(void)
24 {
25 }
26 
flush(void)27 static inline void flush(void)
28 {
29 	/*
30 	 * Wait while the FIFO is not empty
31 	 */
32 	while (!(__raw_readl(IOMEM(LL_UART_PADDR + UART_SR_OFFSET)) &
33 		UART_SR_TXEMPTY))
34 		cpu_relax();
35 }
36 
37 #define arch_decomp_wdog()
38 
putc(char ch)39 static void putc(char ch)
40 {
41 	/*
42 	 * Wait for room in the FIFO, then write the char into the FIFO
43 	 */
44 	while (__raw_readl(IOMEM(LL_UART_PADDR + UART_SR_OFFSET)) &
45 		UART_SR_TXFULL)
46 		cpu_relax();
47 
48 	__raw_writel(ch, IOMEM(LL_UART_PADDR + UART_FIFO_OFFSET));
49 }
50 
51 #endif
52