ARM kprobes: prevent some functions involved with kprobes from being probed
[linux-2.6] / include / asm-arm / arch-ixp4xx / uncompress.h
1 /*
2  * include/asm-arm/arch-ixp4xx/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 <asm/hardware.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 static volatile u32* uart_base;
23
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
34 static void flush(void)
35 {
36 }
37
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                 uart_base = (volatile u32*) IXP4XX_UART2_BASE_PHYS;
46         else
47                 uart_base = (volatile u32*) IXP4XX_UART1_BASE_PHYS;
48 }
49
50 /*
51  * arch_id is a variable in decompress_kernel()
52  */
53 #define arch_decomp_setup()     __arch_decomp_setup(arch_id)
54
55 #define arch_decomp_wdog()
56
57 #endif