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Message
From: wyouken at 163.com<wyouken@1...>
Date: Wed Jul 30 04:33:24 CEST 2008
Subject: [openrisc] How do you debug or1200?
I have run it use ByteblasterII (Altera downlaod cable).But I want to
porting the OR1200 to SOPC Builder (Altera ) . I have some problem .
my msn: wyouken@m...
----- Original Message -----
From: Xiang Li<olivercamel@g...>
To:
Date: Sun Mar 30 21:43:33 CEST 2008
Subject: [openrisc] How do you debug or1200?
> Hi all,
>
> I am a beginner of the or1200 processor, very glad to join the
> openrisc
> world.
> I've made an or1200 cpu running on altera's FPGA successfully by
> using a
> prebuild toolchain in cygwin (altera's tools work better in windows
> environment). Since I converted the binary file into altera's mif
> formate
> and initialized on-chip ram with it directly, there was no
> debugging at all.
> Now I am trying to find a solution of debugging to make code
> developing
> easier. But unfortunately with my little knowledge of Linux and
> Xilinx, I
> don't know what do I need to do to introduce the debugging utility
> (it seems
> i need to study lots of new things ...). So can someone give me a
> hand
> to show me a "block diagram" of how to debug or1200? so
> that I can
> start studying on a correct way.
> According to my understanding, the diagram should be:
> source code -> GCC/binutiles -> GDB with JP1 protocol -> a
> xilinx parallel
> cable -> a JTAG TAP core and a debug interface core by Igor
> -> or1200 cpu.
> But I am not sure if i understood correctly? and is this the most
> popular
> way of debugging that everybody is using?
> Besides, I have several more questions:
> 1. Is there anyone successfully debugging their program in windows
> environment (i.e. cygwin)?
> 2. Is there any other cable can be used except for Xilinx's
> Parallel Cable
> III? such as xilinx usb cable? since most PCs have no parallel port
> now. Or,
> 3. Is there anybody debugging or1200 via a UART connection?
> 4. As far as I know, there should be a piece of code called
> "stub" that
> combined with the software to response the GDB's commands. Is this
> automatically generated by GCC?
> Thanks for the help.
> Best regards,
> Li Xiang
> 3.30
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