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

Tom Rini trini at konsulko.com
Sat Jul 9 02:28:43 CEST 2016


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.

-- 
Tom
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