[U-Boot-Users] U-Boot and S3c2410

[asnua at eircom.net]

So what is the difference between the load and entry addresses? All of the examples I've seen have the load and entry addresses set to be the same...ish. 0x00000000 & 0x0000000c for PPC
In my case my SDRAM starts at 0x30000000 and ends at 0x33FFFFFF. My Flash and hence U-Boot is at 0x00.

Does the load and entry address vary depending on whether you are using vmlinux/vmlinux compressed/zImage?

Thanks,
Dave


Wolfgang Denk <wd at denx.de> wrote:

<  
<  In message <4036262C.4020600 at denayer.wenk.be> you wrote:
<  > 
<  > >(2) Gerrit....Are you also using the S3C2410? 
<  ...
<  > No, a Motorola MPC5200 Lite evaluation board.
<  > But I thought that my suggestion is pretty board-independent :)
<  
<  There are huge differences between architectures.  While  on  PowerPC
<  you  usually  have  flash  at  some  high addresses and RAM mapped at
<  0x0000, you will see flash at 0x0000 and RAM  at  high  addresses  on
<  ARM.
<  
<  You really guessed wrong here.
<  
<  > $ mkimage -n 'Linux PPC MPC5200 2.4' -A ppc -O linux -T kernel -C gzip 
<  > -a 00000000 -e 00000000 -d arch/ppc/boot/images/vmlinux.gz 
<  > /tftpboot/MPC5200/vmlinux.img
<  
<  ... which is OK for PowerPC, but seriously broken for all ARM systems
<  I know.
<  
<  >(3) So why isn't it booting. Or more correctly why is it resetting after it issues the 'Starting kernel ...' message!!
<  > >Am I missing some bootarguments?
<  > >
<  > you don't need to have bootarguments set to see at leaste *some* output 
<  > I think.. Something more severe is going on I believe
<  
<  You have to know the memory map of your system, and you  have  to  be
<  aware  wat  the  load address (-a option to mkimage), entry point (-e
<  option) and the address "addr" where your image is stored in RAM when
<  you type "bootm addr" mean.
<  
<  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
<  He'd been wrong, there _was_ a light at the end of the tunnel, and it
<  was a flamethrower.                         - Terry Pratchett, _Mort_
<