On Sun 17 Feb 2008 17:09, Wolfgang Denk pondered:
> In message <[EMAIL PROTECTED]> you wrote:
> >
> > I always thought that when decompressing a uImage, that the entry
> > point was stored in the header, (at the beginning of the file) and
> > was read after the decompression took place - is that wrong?
>
> I'm not sure what all the different architectures do, but at least
> for PowerPC, ARM and MIPS I know that one of the very first things we
> do in the bootm code is to create a local copy of the image header.
>
> Search for 'memcpy.*header'.
What I saw that in common/cmd_bootm.c:do_bootm() there is a:
/* Copy header so we can blank CRC field for re-calculation */
memmove (&header, (char *)addr, sizeof(image_header_t));
but this seems only to be used in the calc/checking of the CRC.
When I look at
do_bootm_linux (cmdtp, flag, argc, argv,
addr, len_ptr, verify);
I saw it not being used, and what I missed was that header is a global (and
doesn't need to be passed to do_bootm_linux as a parameter).
Thanks & sorry for the noise.
-Robin
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