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originally posted by mfm@May 12 2006, 09:26 AM
hi hippo,
in ~/linux-2.6.x/ i find a 12.8 mb vmlinux file
in ~/linux-2.6.x/arch/nios2nommu/boot/cmpressed/ i find another vmlinux file with only 1 mb.
could you please explain the difference between those two files ?
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The zImage uncompress loader is actually a reduced linux to call kernel library.
So it is small, only less thtan 10K bytes of binary.
Don't be confused on the file size. The ELF is large becuase it can contain a lot of debug symbols. You can reduce the ELF size by remove all the debug symbols, with "nios2-linux-uclibc-strip" command.
You should use binary to mkimge, not elf.
But why don't you follow step6 to run zImage right after you built the kernel?
It looked like you skipped the basic steps and got confused.
You jumped start on u-boot too early.
There are two elf after you make zImage,
linux-2.6.x/vmlinux the orignal kernel elf, load adress = sdram start
linux-2.6.x/arch/nios2nommu/boot/zImage the compressed kernel elf, load address = sdram start + boot link offset
Look at kernel dir include/nios2_system.h to find out the address map.
