| wdenk | e221174 | 2002-11-02 23:30:20 +0000 | [diff] [blame] | 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 IBM405 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/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 | |
| 65 | Bedbug support for the MPC860 |
| 66 | ----------------------------- |
| 67 | |
| 68 | Changes: |
| 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 | |
| 86 | New Files: |
| 87 | |
| 88 | cpu/mpc8xx/bedbug_860.c |
| 89 | CPU-specific routines for 860 debug registers. |