Ken.Fuchs@bench.com wrote:
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Mondesir, Alshine wrote:
My latest endeavor has me cross compiling a stand alone application for > MPC8548 PPC for a U-Boot Based target. There is no Operating System to run on the target to speak of, just my application. I'm building the application in Code Warrior using an 8548_init.S hardware initialization file.
- My first thought was that this should be as
simple as using the .ELF image that codewarrior produces, right? So I build a simple hello_world application and sent it down to my target. U-Boot recognizes it as an ELF image, sets up the segments, and tries to run it! But then low and behold, the U-Boot flash image comes up again.
=> bootelf 400000
=> bootm 400000
How do I go about exporting my code warrior application so that I can run it as stand-alone on a U-Boot based target? Thanks so much
I suspect that your application is using a device or resource that neither U-Boot nor your application have properly initialized.
What is your display device for your hello_world application? Where is this device initialized?
Sincerely,
Ken Fuchs
...and are you (Alshine) loading your application in a valid location? I see 0x00002000 and following. I suspect those locations are used by your version of u-boot. You probably want to link your test app at 0x400000 or somewhere up high like that.
=> bootelf 400000 Loading .init @ 0x00002000 (972 bytes)
[snip]
## Starting application at 0x00002044 ...
gvb