a47a12becf
As discussed on the list, move "arch/ppc" to "arch/powerpc" to better match the Linux directory structure. Please note that this patch also changes the "ppc" target in MAKEALL to "powerpc" to match this new infrastructure. But "ppc" is kept as an alias for now, to not break compatibility with scripts using this name. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de> Acked-by: Kim Phillips <kim.phillips@freescale.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Anatolij Gustschin <agust@denx.de>
79 lines
2.0 KiB
Plaintext
79 lines
2.0 KiB
Plaintext
BEDBUG Support for U-Boot
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--------------------------
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These changes implement the bedbug (emBEDded deBUGger) debugger in U-Boot.
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A specific implementation is made for the AMCC 405 processor but other flavors
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can be easily implemented.
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#####################
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### Modifications ###
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#####################
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./common/Makefile
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Included cmd_bedbug.c and bedbug.c in the Makefile.
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./common/command.c
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Added bedbug commands to command table.
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./common/board.c
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Added call to initialize debugger on startup.
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./arch/powerpc/cpu/ppc4xx/Makefile
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Added bedbug_405.c to the Makefile.
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./arch/powerpc/cpu/ppc4xx/start.S
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Added code to handle the debug exception (0x2000) on the 405.
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Also added code to handle critical exceptions since the debug
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is treated as critical on the 405.
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./arch/powerpc/cpu/ppc4xx/traps.c
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Added more detailed output for the program exception to tell
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if it is an illegal instruction, privileged instruction or
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a trap. Also added debug trap handler.
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./include/ppc_asm.tmpl
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Added code to handle critical exceptions
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#################
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### New Stuff ###
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#################
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./include/bedbug/ppc.h
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./include/bedbug/regs.h
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./include/bedbug/bedbug.h
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./include/bedbug/elf.h [obsoleted by new include/elf.h]
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./include/bedbug/tables.h
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./include/cmd_bedbug.h
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./common/cmd_bedbug.c
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./common/bedbug.c
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Bedbug library includes code for assembling and disassembling
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PowerPC instructions to/from memory as well as handling
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hardware breakpoints and stepping through code. These
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routines are common to all PowerPC processors.
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./arch/powerpc/cpu/ppc4xx/bedbug_405.c
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AMCC PPC405 specific debugger routines.
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Bedbug support for the MPC860
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-----------------------------
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Changes:
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common/cmd_bedbug.c
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Added call to initialize 860 debugger.
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arch/powerpc/cpu/mpc8xx/Makefile
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Added new file "bedbug_860.c" to the makefile
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arch/powerpc/cpu/mpc8xx/start.S
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Added handler for InstructionBreakpoint (0xfd00)
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arch/powerpc/cpu/mpc8xx/traps.c
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Added new routine DebugException()
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New Files:
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arch/powerpc/cpu/mpc8xx/bedbug_860.c
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CPU-specific routines for 860 debug registers.
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