Re: Basic questions about PPC embedded developement under Linux

In message [off-list ref] you wrote:

I have a small question regarding the "bdiGDB".
I need to first flash the kernel image into the flash memory. Can this be
done with the debugger??

Yes. Using the telnet interface, you can  use  the  LOAD  command  to
download an image to RAM, and the PROG command to write it to FLASH:

LOAD   [<offset>] [<file> [<format>]] load program file to target memory
...
PROG   [<offset>] [<file>]   program flash memory

Also the boot monitor needs to load the kernel image from the flash memory
to the RAM and start executing it.
Can this be traced with "bdiGDB"??

You can use a "target remote" command in GDB to attach to the  BDI200
debugger;  then  you  can use GDB; or you can do everything "by hand"
using the telnet interface and commands like these:

...
GO    [<pc>]                 set PC and start target system
TI    [<pc>]                 trace on instuction (single step)
TC    [<pc>]                 trace on change of flow
HALT                         force target to enter debug mode
BI  <from> [<to>] [<count>]  set instruction breakpoint
CI  [<id>]                   clear instruction breakpoint(s)
BD  [R|W] <addr> [<count>] [<data>] set data breakpoint (32bit access)
BDH [R|W] <addr> [<count>] [<data>] set data breakpoint (16bit access)
BDB [R|W] <addr> [<count>] [<data>] set data breakpoint ( 8bit access)
BDR <from> <to> [<count>]    set data breakpoint on a range
CD [<id>]                    clear data breakpoint(s)
...

Hope this helps.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
The game of life is a game of boomerangs.  Our  thoughts,  deeds  and
words return to us sooner or later with astounding accuracy.

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