[ECOS] Re: redboot gdb stub question.

limk chianq@gmail.com
Fri Jun 13 07:19:00 GMT 2008


hi,

i've found the solution from the list archive. thanks guys.



On Fri, Jun 13, 2008 at 11:48 AM, limk <chianq@gmail.com> wrote:
> Hi,
>
> I'm building a new redboot for my mips 4kc based board.
>
> the board already has a redboot preloaded and my intention is to
> upgrade the amount of RAM (16MB->32MB).
>
> I've built a RAM version of the board and upon loading it, it throws
> gdb stub string in the console
>
>
>
> RedBoot> load -r -v -b 0x80041000 redboot.ram.bin
> Using default protocol (TFTP)
> -
> Raw file loaded 0x80041000-0x80083c77, assumed entry at 0x80041000
> RedBoot> go 0x800410bc
> $O666C6173685F6877725F696E69743A20666C61736820646576696365202D2069643D32320A#18
>
> after input 3 + character from the  console (serial port), the boot
> goes on normally.
>
> .
>
> If I try to debug this with gdb, I got the attached response
> mipsisa32-elf-gdb -nw -b 9600  install/bin/redboot.elf
> GNU gdb 5.3 (eCosCentric)
> Copyright 2002 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "--host=i686-pc-linux-gnu --target=mipsisa32-elf"...
>
> (gdb) set debug remote 1
> (gdb) set remotelogfile /dev/tty
> (gdb) target remote /dev/ttyUSB0
> Remote debugging using /dev/ttyUSB0
>
> w +Sending packet: $Hc-1#09...$Hc-1#09
> r $Packet instead of Ack, ignoring it
> O666C6173685F6877725F696E69743A20737461727420307861383030303030302C20656E6420307861383766303030300A#B0$Packet
> instead of Ack, ignoring it
> O666C6173685F6877725F696E69743A20737461727420307861383030303030302C20656E6420307861383766303030300A#B0<Timeout:
> 2 seconds>Sending packet: $Hc-1#09...
> w $Hc-1#09
> r $Packet instead of Ack, ignoring it
> O666C6173685F6877725F696E69743A20737461727420307861383030303030302C20656E6420307861383766303030300A#B0<Timeout:
> 2 seconds>Sending packet: $Hc-1#09...
> w $Hc-1#09
> r $Packet instead of Ack, ignoring it
> O666C6173685F6877725F696E69743A20737461727420307861383030303030302C20656E6420307861383766303030300A#B0<Timeout:
> 2 seconds>Sending packet: $Hc-1#09...
> w $Hc-1#09
> r $Packet instead of Ack, ignoring it
> O666C6173685F6877725F696E69743A20737461727420307861383030303030302C20656E6420307861383766303030300A#B0<Timeout:
> 2 seconds><Timeout: 2 seconds>Timed out.
>
> w -
> r $O666C6173685F6877725F696E69743A20737461727420307861383030303030302C20656E6420307861383766303030300A#B0Packet
> received: O666C6173685F6877725F696E69743A20737461727420307861383030303030302C20656E6420307861383766303030300A
>
> w +Sending packet: $qC#b4...$qC#b4
> r +Ack
> Ethernet eth0: MAC address 00:18:84:1e:dd:90\r\nIP:
> 192.168.1.73/255.255.255.0, Gateway: 0.0.0.0\r\nDefault server:
> 192.168.1.71, DNS server IP: 0.0.0.0\r\n\r\nRedBoot(tm) bootstrap and
> debug environment [RAM]\r\nNon-certified release, version v2_0 - built
> 11:35:16, Jun 13 2008\r\n\r\n\r\nCopyright (C) 2000, 2001, 2002, Red
> Hat, Inc.\r\n\r\nRAM: 0x80010000-0x81000000, 0x8009cbb0-0x807d1ce0
> available\r\nFLASH: 0xa8000000 - 0xa87f0000, 128 blocks of 0x00010000
> bytes each.\r\n== Executing boot script in 1.000 seconds - enter ^C to
> abort\r\nRedBoot> qC#b4<Timeout: 2 seconds>Timed out.
>
> w -
> r -<Timeout: 2 seconds>Timed out.
>
> w -
> r -<Timeout: 2 seconds>Timed out.
>
> w -Ignoring packet error, continuing...
> +Sending packet: $qOffsets#4b...$qOffsets#4b
> r -Nak
> Sending packet: $qOffsets#4b...
> w $qOffsets#4b
> r <Timeout: 2 seconds>Sending packet: $qOffsets#4b...
> w $qOffsets#4b
> r <Timeout: 2 seconds>Sending packet: $qOffsets#4b...
> w $qOffsets#4b
> r <Timeout: 2 seconds><Timeout: 2 seconds>Timed out.
>
> w -
> r <Timeout: 2 seconds>Timed out.
>
> w -
> r <Timeout: 2 seconds>Timed out.
>
> w -Ignoring packet error, continuing...
> +Couldn't establish connection to remote target
> Malformed response to offset query, timeout
>
> End of log
>
> Please help and thanks in advance.
>

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