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git01.mediatek.com / filogic / uboot / f7c6737ffa5ac9b870b6c50caed9a3448e5dd26a / . / doc / README.bedbug
blob: 4c1e6c4d5ba2f021128955350bc60b06af9be1dc [file] [log] [blame]
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]1BEDBUG Support for U-Boot
2--------------------------
3
4These changes implement the bedbug (emBEDded deBUGger) debugger in U-Boot.
Wolfgang Denk0ee70772005-09-23 11:05:55 +0200[diff] [blame]5A specific implementation is made for the AMCC 405 processor but other flavors
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]6can 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
Peter Tyser29514c72010-04-12 22:28:09 -0500[diff] [blame]21./arch/ppc/cpu/ppc4xx/Makefile
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]22 Added bedbug_405.c to the Makefile.
23
Peter Tyser29514c72010-04-12 22:28:09 -0500[diff] [blame]24./arch/ppc/cpu/ppc4xx/start.S
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]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
Peter Tyser29514c72010-04-12 22:28:09 -0500[diff] [blame]29./arch/ppc/cpu/ppc4xx/traps.c
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]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
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]34./include/ppc_asm.tmpl
35 Added code to handle critical exceptions
36
37#################
38### New Stuff ###
39#################
40
41./include/bedbug/ppc.h
42./include/bedbug/regs.h
43./include/bedbug/bedbug.h
44./include/bedbug/elf.h [obsoleted by new include/elf.h]
45./include/bedbug/tables.h
46./include/cmd_bedbug.h
47./common/cmd_bedbug.c
48./common/bedbug.c
49 Bedbug library includes code for assembling and disassembling
50 PowerPC instructions to/from memory as well as handling
51 hardware breakpoints and stepping through code. These
52 routines are common to all PowerPC processors.
53
Peter Tyser29514c72010-04-12 22:28:09 -0500[diff] [blame]54./arch/ppc/cpu/ppc4xx/bedbug_405.c
Wolfgang Denk0ee70772005-09-23 11:05:55 +0200[diff] [blame]55 AMCC PPC405 specific debugger routines.
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]56
57
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]58Bedbug support for the MPC860
59-----------------------------
60
61Changes:
62
63 common/cmd_bedbug.c
64 Added call to initialize 860 debugger.
65
Peter Tyser29514c72010-04-12 22:28:09 -0500[diff] [blame]66 arch/ppc/cpu/mpc8xx/Makefile
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]67 Added new file "bedbug_860.c" to the makefile
68
Peter Tyser29514c72010-04-12 22:28:09 -0500[diff] [blame]69 arch/ppc/cpu/mpc8xx/start.S
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]70 Added handler for InstructionBreakpoint (0xfd00)
71
Peter Tyser29514c72010-04-12 22:28:09 -0500[diff] [blame]72 arch/ppc/cpu/mpc8xx/traps.c
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]73 Added new routine DebugException()
74
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]75New Files:
76
Peter Tyser29514c72010-04-12 22:28:09 -0500[diff] [blame]77 arch/ppc/cpu/mpc8xx/bedbug_860.c
wdenke2211742002-11-02 23:30:20 +0000[diff] [blame]78 CPU-specific routines for 860 debug registers.