From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Lin To: ecos-discuss@sourceware.cygnus.com Subject: RE: [ECOS] RedBoot porting problem Date: Thu, 14 Jun 2001 10:52:00 -0000 Message-id: <20010614175250.28515.qmail@web13901.mail.yahoo.com> References: X-SW-Source: 2001-06/msg00521.html Hi, Thanks for all the replies. I will keep trying. Here is how I test Redboot on my board so far, I have a working gdb stub to boot up the board, then I load the redboot image file (redboot.img), which is compiled to run from RAM, by JTAG ICE and run it. The reason I need to use JTAG instead of the existing gdb stub in flash to load it is I have only one serial port on board. Then if it's working, since I don't have a flash programming driver for my board, I'm going to burn the ROM-Start image to EEPROM. Thanks again! Jeremy Lin --- Gary Thomas wrote: > > On 13-Jun-2001 Jeremy Lin wrote: > > Hi, > > I use CVS version of eCos for my target. > > Now I have a working HAL and serial driver for > > my platform(SAMSUNG KS32C50100 based), and > > the gdb stub works fine on my board. > > I was trying to port redboot to my platform. I > > tried to compile it by choosing template "redboot" > > and it compiled successfully; I also have a set of > > ecm files which is copied from pid platform. > > But when I load the redboot image file and run it, > > instead of redboot banner, the serial port always > > outputs a string like this "$T0a0f:00000000;0d:00000000;#f9", > > just like what I got when using gdb stub. > > Does that mean it still in gdb protocol mode? How can I get > > the redboot mode? Please give me a hint.. > > It means that something went wrong when you started it up. Are > you running this from ROM or RAM? > > You can get a clue by simply connecting to your board via GDB > and getting a backtrace and register info. This may give you > an idea why it is failing. > > % arm-elf-gdb -nw redboot.elf > (gdb) set remotebaud 38400 > (gdb) tar rem /dev/ttyS0 > (gdb) info reg > (gdb) bt > __________________________________________________ Do You Yahoo!? Spot the hottest trends in music, movies, and more. http://buzz.yahoo.com/