[U-Boot] Question regarding MLO size

[Tom Rini]

On Tue, Apr 21, 2015 at 11:56:05AM -0700, Arun Bharadwaj wrote:
> Hi all,
> 
> I am using a Gumstix Overo (omap3), running the u-boot v2015.04 and have
> the following issue:
> 
> I have made a few modifications to the misc_init_r() routine in the
> board/overo/overo.c file; the resulting MLO file is 61,220 bytes and the
> console hangs at "reading u-boot.img" during the boot process. In the
> absence of those changes to the misc_init_r() the MLO size is 61,212 bytes
> and the u-boot is loaded without any issues.
> 
> misc_init_r() is not even called from any SPL related code, so I am not
> sure why changes to this routine is causing MLO size to change. I verified
> this by doing the following: I put a few debug statements in misc_init_r()
> and rebuilt both u-boot.img and MLO. First, I replaced only the new MLO in
> my target and the debug statement did not appear while it appeared when I
> replaced the u-boot.img in the target.
> 
> If anybody has an idea what is going on, it would be very helpful. Thanks!

You're running into https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54303
which is that even if the function is being garbage collected the
strings are not.  Sadly it may make sense to move some SPL-only
functions out into a file that is only built/linked for SPL due to this
bug.

-- 
Tom
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