In message <A4EB77D93A60F347A518AC05291647D9032E5E at domosvr1.domo.local> you wrote: > > I am trying to get a linux kernel to build and run on a Cogent CSB272 > (IBM PPC 405GP processor) running a U-boot 0.4.0 bootloader. I can tftp > a uImage into ram and it passes check, but when I run bootm it > uncompresses the kernel and hangs after it starts executing the kernel > at address 0x00000000.
This is a FAQ. See http://www.denx.de/twiki/bin/view/DULG/LinuxHangsAfterUncompressingKernel > I was given a hardhat vmlinux elf file that I can package to a uImage > and run (although it stops at the Calibrating Delay loop... Stage, but Probably the same problem - bad parameters (clock frequencies) passed to the kernel. > that's another issue). I need to be able to recompile a kernel for the > board and downloaded linuxppc_2_4_devel from mvista. This compiles fine > and produces a new vmlinux. I've started off by using the walnut 405 > config file to build the kernel, since they're pretty similar. Ummm... you better make sure it really matches your board. Similar is not enough. > Any ideas where to start debugging this? I'm relatively new in embedded > stuff and linux in general, so it might be something simple, but don't > know where to start. Have a BDI2000 but no gdb driver yet, so can't put > in breakpoints etc. ??? Can't parse that. You can use the BDI's telnet interface to set breakpoints, too. And you don;t know any special "gdb driver", as any plain GDB will allow you to connect to the BDI which "speaks" GDB remote protocol over the network. Best regards, Wolfgang Denk -- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de "Why should we subsidize intellectual curiosity?" - Ronald Reagan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
