1 /******************************************************************************
2 * Copyright (c) 2004, 2008 IBM Corporation
3 * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net>
5 * This program and the accompanying materials
6 * are made available under the terms of the BSD License
7 * which accompanies this distribution, and is available at
8 * http://www.opensource.org/licenses/bsd-license.php
11 * IBM Corporation - initial implementation
12 *****************************************************************************/
13 #ifndef _BIOSEMU_DEBUG_H_
14 #define _BIOSEMU_DEBUG_H_
18 extern u32 debug_flags;
19 // from x86emu...needed for debugging
20 extern void x86emu_dump_xregs(void);
22 /* printf is not available in coreboot... use printk */
23 #include <console/console.h>
24 #include "x86emu/x86emu.h"
25 #define printf(x...) printk(BIOS_DEBUG, x)
27 /* PH: empty versions of set/clr_ci
29 static inline void clr_ci(void) {};
30 static inline void set_ci(void) {};
32 /* debug_flags is a binary switch that allows you to select the following items
33 * to debug. 1=on 0=off. After you decide what you want to debug create the
34 * binary value, convert to hex and set the option. These options can be
35 * selected in Kconfig.
37 * |-DEBUG_JMP - print info about JMP and RETF opcodes from x86emu
38 * ||-DEBUG_TRACE_X86EMU - print _all_ opcodes that are executed by x86emu (WARNING: this will produce a LOT of output)
39 * |||-Currently unused
40 * ||||-Currently unused
41 * |||||-Currently unused
42 * ||||||-DEBUG_PNP - Print Plug And Play access made by option rom
43 * |||||||-DEBUG_DISK - Print Disk I/O related messages, currently unused
44 * ||||||||-DEBUG_PMM - Print messages related to POST Memory Manager (PMM)
45 * |||||||||-DEBUG_VBE - Print messages related to VESA BIOS Extension (VBE) functions
46 * ||||||||||-DEBUG_PRINT_INT10 - let INT10 (i.e. character output) calls print messages to Debug output
47 * |||||||||||-DEBUG_INTR - Print messages related to interrupt handling
48 * ||||||||||||-DEBUG_CHECK_VMEM_ACCESS - Print messages related to accesse to certain areas of the virtual Memory (e.g. BDA (BIOS Data Area) or Interrupt Vectors)
49 * |||||||||||||-DEBUG_MEM - Print memory access made by option rom (NOTE: this also includes accesses to fetch instructions)
50 * ||||||||||||||-DEBUG_IO - Print I/O access made by option rom
51 * 11000111111111 - Max Binary Value, Debug All (WARNING: - This could run for hours)
56 // set this to print messages for certain virtual memory accesses (Interrupt Vectors, ...)
57 #define DEBUG_CHECK_VMEM_ACCESS 0x4
58 #define DEBUG_INTR 0x8
59 #define DEBUG_PRINT_INT10 0x10 // set to have the INT10 routine print characters
60 #define DEBUG_VBE 0x20
61 #define DEBUG_PMM 0x40
62 #define DEBUG_DISK 0x80
63 #define DEBUG_PNP 0x100
65 #define DEBUG_TRACE_X86EMU 0x1000
66 // set to enable tracing of JMPs in x86emu
67 #define DEBUG_JMP 0x2000
69 #if defined(CONFIG_X86EMU_DEBUG) && CONFIG_X86EMU_DEBUG
71 #define CHECK_DBG(_flag) if (debug_flags & _flag)
73 #define DEBUG_PRINTF(_x...) printf(_x);
74 // prints the CS:IP before the printout, NOTE: actually its CS:IP of the _next_ instruction
75 // to be executed, since the x86emu advances CS:IP _before_ actually executing an instruction
76 #define DEBUG_PRINTF_CS_IP(_x...) DEBUG_PRINTF("%x:%x ", M.x86.R_CS, M.x86.R_IP); DEBUG_PRINTF(_x);
78 #define DEBUG_PRINTF_IO(_x...) CHECK_DBG(DEBUG_IO) { DEBUG_PRINTF_CS_IP(_x) }
79 #define DEBUG_PRINTF_MEM(_x...) CHECK_DBG(DEBUG_MEM) { DEBUG_PRINTF_CS_IP(_x) }
80 #define DEBUG_PRINTF_INTR(_x...) CHECK_DBG(DEBUG_INTR) { DEBUG_PRINTF_CS_IP(_x) }
81 #define DEBUG_PRINTF_VBE(_x...) CHECK_DBG(DEBUG_VBE) { DEBUG_PRINTF_CS_IP(_x) }
82 #define DEBUG_PRINTF_PMM(_x...) CHECK_DBG(DEBUG_PMM) { DEBUG_PRINTF_CS_IP(_x) }
83 #define DEBUG_PRINTF_DISK(_x...) CHECK_DBG(DEBUG_DISK) { DEBUG_PRINTF_CS_IP(_x) }
84 #define DEBUG_PRINTF_PNP(_x...) CHECK_DBG(DEBUG_PNP) { DEBUG_PRINTF_CS_IP(_x) }
88 #define CHECK_DBG(_flag) if (0)
90 #define DEBUG_PRINTF(_x...)
91 #define DEBUG_PRINTF_CS_IP(_x...)
93 #define DEBUG_PRINTF_IO(_x...)
94 #define DEBUG_PRINTF_MEM(_x...)
95 #define DEBUG_PRINTF_INTR(_x...)
96 #define DEBUG_PRINTF_VBE(_x...)
97 #define DEBUG_PRINTF_PMM(_x...)
98 #define DEBUG_PRINTF_DISK(_x...)
99 #define DEBUG_PRINTF_PNP(_x...)
103 void dump(u8 * addr, u32 len);