1BEDBUG Support for U-Boot 2-------------------------- 3 4These changes implement the bedbug (emBEDded deBUGger) debugger in U-Boot. 5A specific implementation is made for the IBM405 processor but other flavors 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 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/cmd_confdefs.h 35 Added definition of CFG_CMD_BEDBUG. 36 37./include/config_WALNUT405.h 38 Added CFG_CMD_BEDBUG to the CONFIG_COMMANDS for the WALNUT. 39 40./include/ppc_asm.tmpl 41 Added code to handle critical exceptions 42 43################# 44### New Stuff ### 45################# 46 47./include/bedbug/ppc.h 48./include/bedbug/regs.h 49./include/bedbug/bedbug.h 50./include/bedbug/elf.h [obsoleted by new include/elf.h] 51./include/bedbug/tables.h 52./include/cmd_bedbug.h 53./common/cmd_bedbug.c 54./common/bedbug.c 55 Bedbug library includes code for assembling and disassembling 56 PowerPC instructions to/from memory as well as handling 57 hardware breakpoints and stepping through code. These 58 routines are common to all PowerPC processors. 59 60./cpu/ppc4xx/bedbug_405.c 61 IBM PPC405 specific debugger routines. 62 63 64 65Bedbug support for the MPC860 66----------------------------- 67 68Changes: 69 70 common/cmd_bedbug.c 71 Added call to initialize 860 debugger. 72 73 cpu/mpc8xx/Makefile 74 Added new file "bedbug_860.c" to the makefile 75 76 cpu/mpc8xx/start.S 77 Added handler for InstructionBreakpoint (0xfd00) 78 79 cpu/mpc8xx/traps.c 80 Added new routine DebugException() 81 82 include/config_MBX.h 83 Added CFG_CMD_BEDBUG to CONFIG_COMMANDS define 84 85 86New Files: 87 88 cpu/mpc8xx/bedbug_860.c 89 CPU-specific routines for 860 debug registers. 90