--------------------------
These changes implement the bedbug (emBEDded deBUGger) debugger in U-Boot.
-A specific implementation is made for the IBM405 processor but other flavors
-can be easily implemented.
#####################
### Modifications ###
./common/Makefile
Included cmd_bedbug.c and bedbug.c in the Makefile.
-./common/command.c
- Added bedbug commands to command table.
-
./common/board.c
Added call to initialize debugger on startup.
-./cpu/ppc4xx/Makefile
- Added bedbug_405.c to the Makefile.
-
-./cpu/ppc4xx/start.S
- Added code to handle the debug exception (0x2000) on the 405.
- Also added code to handle critical exceptions since the debug
- is treated as critical on the 405.
-
-./cpu/ppc4xx/traps.c
- Added more detailed output for the program exception to tell
- if it is an illegal instruction, privileged instruction or
- a trap. Also added debug trap handler.
-
-./include/cmd_confdefs.h
- Added definition of CFG_CMD_BEDBUG.
-
-./include/config_WALNUT405.h
- Added CFG_CMD_BEDBUG to the CONFIG_COMMANDS for the WALNUT.
-
./include/ppc_asm.tmpl
Added code to handle critical exceptions
hardware breakpoints and stepping through code. These
routines are common to all PowerPC processors.
-./cpu/ppc4xx/bedbug_405.c
- IBM PPC405 specific debugger routines.
-
-
Bedbug support for the MPC860
-----------------------------
common/cmd_bedbug.c
Added call to initialize 860 debugger.
- cpu/mpc8xx/Makefile
+ arch/powerpc/cpu/mpc8xx/Makefile
Added new file "bedbug_860.c" to the makefile
- cpu/mpc8xx/start.S
+ arch/powerpc/cpu/mpc8xx/start.S
Added handler for InstructionBreakpoint (0xfd00)
- cpu/mpc8xx/traps.c
+ arch/powerpc/cpu/mpc8xx/traps.c
Added new routine DebugException()
- include/config_MBX.h
- Added CFG_CMD_BEDBUG to CONFIG_COMMANDS define
-
-
New Files:
- cpu/mpc8xx/bedbug_860.c
+ arch/powerpc/cpu/mpc8xx/bedbug_860.c
CPU-specific routines for 860 debug registers.