[U-Boot] [PATCH v2 3/3] image: Allow images to indicate they're loadable at any address

Wolfgang Denk wd at denx.de
Sat Dec 10 23:53:12 CET 2011


Dear Linus Walleij,

In message <CACRpkdY7fov87fuSS+KfbDtyGhR2NtbTXzVEEDrBUawXeHPmUw at mail.gmail.com> you wrote:
> 
> > Can I assume that we have (or can have) a 'make uImage' target or
> > similar in the kernel which can pack together:
> >
> > - a compressed kernel (not zImage, I mean something that U-Boot can
> > decompress), with a rel_offset of 32KB
> 
> As explained by Nico, having the boot loader decompress the
> kernel is *bad*.

This is your point of view, but others (including me) think different.

> I configure it in like this with the config script
> (you can also use menuconfig or interactive config...):
> 
> scripts/config --file .config \
>         --enable BLK_DEV_INITRD \
>         --set-str INITRAMFS_SOURCE rootfs.cpio \
>         --enable INITRAMFS_COMPRESSION_GZIP \
>         --enable RD_GZIP
> 
> Since this was so convenient I made a patch to attach a DTB

Convenient?  Again, this is a matter of taste and aquired habits.

With U-Boot none of this is needed.

Wolfgang Denk

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