[U-Boot] [U-Boot,v2] SPL: tiny-printf: avoid any BSS usage

[Tom Rini]

On Sat, Jul 09, 2016 at 10:22:37AM +0200, Marek Vasut wrote:
> On 07/09/2016 02:28 AM, Tom Rini wrote:
> >On Fri, Jul 08, 2016 at 11:48:12PM +0200, Marek Vasut wrote:
> >>On 07/08/2016 06:50 PM, Tom Rini wrote:
> >>>On Fri, Jul 08, 2016 at 03:18:35PM +0100, Andre Przywara wrote:
> >>>
> >>>>As printf calls may be executed quite early, we should avoid using any
> >>>>BSS stored variables, since some boards put BSS in DRAM, which may not
> >>>>have been initialised yet.
> >>>>Explicitly mark those "static global" variables as belonging to the
> >>>>.data section, to keep tiny-printf clear of any BSS usage.
> >>>>
> >>>>Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> >>>
> >>>Applied to u-boot/master, thanks!
> >>>
> >>Mind you, __section(".data") would be enough, no need to spell the
> >>whole attribute.
> >
> >True, but that's a helper that's not really utilized today.
> >
> That's something that should likely be changed, as it allows to
> seamlessly deal with compiler quirks (if some were to ever pop up in
> this area).

Patches welcome for the next release ;)

-- 
Tom
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