1 /*
2  * arch/arm/mach-ixp4xx/include/mach/uncompress.h
3  *
4  * Copyright (C) 2002 Intel Corporation.
5  * Copyright (C) 2003-2004 MontaVista Software, Inc.
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  *
11  */
12 
13 #ifndef _ARCH_UNCOMPRESS_H_
14 #define _ARCH_UNCOMPRESS_H_
15 
16 #include "ixp4xx-regs.h"
17 #include <asm/mach-types.h>
18 #include <linux/serial_reg.h>
19 
20 #define TX_DONE (UART_LSR_TEMT|UART_LSR_THRE)
21 
22 volatile u32* uart_base;
23 
putc(int c)24 static inline void putc(int c)
25 {
26 	/* Check THRE and TEMT bits before we transmit the character.
27 	 */
28 	while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
29 		barrier();
30 
31 	*uart_base = c;
32 }
33 
flush(void)34 static void flush(void)
35 {
36 }
37 
__arch_decomp_setup(unsigned long arch_id)38 static __inline__ void __arch_decomp_setup(unsigned long arch_id)
39 {
40 	/*
41 	 * Some boards are using UART2 as console
42 	 */
43 	if (machine_is_adi_coyote() || machine_is_gtwx5715() ||
44 	    machine_is_gateway7001() || machine_is_wg302v2() ||
45 	    machine_is_devixp() || machine_is_miccpt() || machine_is_mic256())
46 		uart_base = (volatile u32*) IXP4XX_UART2_BASE_PHYS;
47 	else
48 		uart_base = (volatile u32*) IXP4XX_UART1_BASE_PHYS;
49 }
50 
51 /*
52  * arch_id is a variable in decompress_kernel()
53  */
54 #define arch_decomp_setup()	__arch_decomp_setup(arch_id)
55 
56 #define arch_decomp_wdog()
57 
58 #endif
59