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 /* uurgs... yuck... x86emu/x86emu.h is redefining printk... we include it here
25 * and use its redefinition of printk
27 #include "x86emu/x86emu.h"
30 /* PH: empty versions of set/clr_ci
32 static inline void clr_ci(void) {};
33 static inline void set_ci(void) {};
35 /* Set CONFIG_YABEL_DEBUG_FLAGS is a binary switch that allows you
36 * to select the following items to debug. 1=on 0=off. After you
37 * decide what you want to debug create the binary value, convert to hex
38 * and set the Option (Ex. CONFIG_YABEL_DEBUG_FLAGS = 0x31FF //Debug All).
40 * |-DEBUG_JMP - print info about JMP and RETF opcodes from x86emu
41 * ||-DEBUG_TRACE_X86EMU - print _all_ opcodes that are executed by x86emu (WARNING: this will produce a LOT of output)
42 * |||-Currently unused
43 * ||||-Currently unused
44 * |||||-Currently unused
45 * ||||||-DEBUG_PNP - Print Plug And Play access made by option rom
46 * |||||||-DEBUG_DISK - Print Disk I/O related messages, currently unused
47 * ||||||||-DEBUG_PMM - Print messages related to POST Memory Manager (PMM)
48 * |||||||||-DEBUG_VBE - Print messages related to VESA BIOS Extension (VBE) functions
49 * ||||||||||-DEBUG_PRINT_INT10 - let INT10 (i.e. character output) calls print messages to Debug output
50 * |||||||||||-DEBUG_INTR - Print messages related to interrupt handling
51 * ||||||||||||-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)
52 * |||||||||||||-DEBUG_MEM - Print memory access made by option rom (NOTE: this also includes accesses to fetch instructions)
53 * ||||||||||||||-DEBUG_IO - Print I/O access made by option rom
54 * 11000111111111 - Max Binary Value, Debug All (WARNING: - This could run for hours)
59 // set this to print messages for certain virtual memory accesses (Interrupt Vectors, ...)
60 #define DEBUG_CHECK_VMEM_ACCESS 0x4
61 #define DEBUG_INTR 0x8
62 #define DEBUG_PRINT_INT10 0x10 // set to have the INT10 routine print characters
63 #define DEBUG_VBE 0x20
64 #define DEBUG_PMM 0x40
65 #define DEBUG_DISK 0x80
66 #define DEBUG_PNP 0x100
68 #define DEBUG_TRACE_X86EMU 0x1000
69 // set to enable tracing of JMPs in x86emu
70 #define DEBUG_JMP 0x2000
76 #define CHECK_DBG(_flag) if (debug_flags & _flag)
78 #define DEBUG_PRINTF(_x...) printf(_x);
79 // prints the CS:IP before the printout, NOTE: actually its CS:IP of the _next_ instruction
80 // to be executed, since the x86emu advances CS:IP _before_ actually executing an instruction
81 #define DEBUG_PRINTF_CS_IP(_x...) DEBUG_PRINTF("%x:%x ", M.x86.R_CS, M.x86.R_IP); DEBUG_PRINTF(_x);
83 #define DEBUG_PRINTF_IO(_x...) CHECK_DBG(DEBUG_IO) { DEBUG_PRINTF_CS_IP(_x) }
84 #define DEBUG_PRINTF_MEM(_x...) CHECK_DBG(DEBUG_MEM) { DEBUG_PRINTF_CS_IP(_x) }
85 #define DEBUG_PRINTF_INTR(_x...) CHECK_DBG(DEBUG_INTR) { DEBUG_PRINTF_CS_IP(_x) }
86 #define DEBUG_PRINTF_VBE(_x...) CHECK_DBG(DEBUG_VBE) { DEBUG_PRINTF_CS_IP(_x) }
87 #define DEBUG_PRINTF_PMM(_x...) CHECK_DBG(DEBUG_PMM) { DEBUG_PRINTF_CS_IP(_x) }
88 #define DEBUG_PRINTF_DISK(_x...) CHECK_DBG(DEBUG_DISK) { DEBUG_PRINTF_CS_IP(_x) }
89 #define DEBUG_PRINTF_PNP(_x...) CHECK_DBG(DEBUG_PNP) { DEBUG_PRINTF_CS_IP(_x) }
93 #define CHECK_DBG(_flag) if (0)
95 #define DEBUG_PRINTF(_x...)
96 #define DEBUG_PRINTF_CS_IP(_x...)
98 #define DEBUG_PRINTF_IO(_x...)
99 #define DEBUG_PRINTF_MEM(_x...)
100 #define DEBUG_PRINTF_INTR(_x...)
101 #define DEBUG_PRINTF_VBE(_x...)
102 #define DEBUG_PRINTF_PMM(_x...)
103 #define DEBUG_PRINTF_DISK(_x...)
104 #define DEBUG_PRINTF_PNP(_x...)
108 void dump(u8 * addr, u32 len);