Remove references to the old cmd_confdefs.h include file.
[kernel/u-boot.git] / doc / README.bedbug
1 BEDBUG Support for U-Boot
2 --------------------------
3
4 These changes implement the bedbug (emBEDded deBUGger) debugger in U-Boot.
5 A specific implementation is made for the AMCC 405 processor but other flavors
6 can be easily implemented.
7
8 #####################
9 ### Modifications ###
10 #####################
11
12 ./common/Makefile
13         Included cmd_bedbug.c and bedbug.c in the Makefile.
14
15 ./common/command.c
16         Added bedbug commands to command table.
17
18 ./common/board.c
19         Added call to initialize debugger on startup.
20
21 ./cpu/ppc4xx/Makefile
22         Added bedbug_405.c to the Makefile.
23
24 ./cpu/ppc4xx/start.S
25         Added code to handle the debug exception (0x2000) on the 405.
26         Also added code to handle critical exceptions since the debug
27         is treated as critical on the 405.
28
29 ./cpu/ppc4xx/traps.c
30         Added more detailed output for the program exception to tell
31         if it is an illegal instruction, privileged instruction or
32         a trap. Also added debug trap handler.
33
34 ./include/config_WALNUT405.h
35         Added CFG_CMD_BEDBUG to the CONFIG_COMMANDS for the WALNUT.
36
37 ./include/ppc_asm.tmpl
38         Added code to handle critical exceptions
39
40 #################
41 ### New Stuff ###
42 #################
43
44 ./include/bedbug/ppc.h
45 ./include/bedbug/regs.h
46 ./include/bedbug/bedbug.h
47 ./include/bedbug/elf.h          [obsoleted by new include/elf.h]
48 ./include/bedbug/tables.h
49 ./include/cmd_bedbug.h
50 ./common/cmd_bedbug.c
51 ./common/bedbug.c
52         Bedbug library includes code for assembling and disassembling
53         PowerPC instructions to/from memory as well as handling
54         hardware breakpoints and stepping through code.  These
55         routines are common to all PowerPC processors.
56
57 ./cpu/ppc4xx/bedbug_405.c
58         AMCC  PPC405 specific debugger routines.
59
60
61 Bedbug support for the MPC860
62 -----------------------------
63
64 Changes:
65
66         common/cmd_bedbug.c
67                 Added call to initialize 860 debugger.
68
69         cpu/mpc8xx/Makefile
70                 Added new file "bedbug_860.c" to the makefile
71
72         cpu/mpc8xx/start.S
73                 Added handler for InstructionBreakpoint (0xfd00)
74
75         cpu/mpc8xx/traps.c
76                 Added new routine DebugException()
77
78         include/config_MBX.h
79                 Added CFG_CMD_BEDBUG to CONFIG_COMMANDS define
80
81
82 New Files:
83
84         cpu/mpc8xx/bedbug_860.c
85                 CPU-specific routines for 860 debug registers.