[U-Boot] Cannot compile arm u-boot with hardfloat toolchain

B.R. Oake
2015-01-05T10:46:50Z

On 05/01/15 01:28, Tom Rini wrote:
> On Sun, Jan 04, 2015 at 11:23:29PM +0100, Michal Suchanek wrote:
>> when using a hardfloat toolchain linking u-boot fails.
>
> What version of U-Boot are you building? There's a few rc releases that
> fail with hardfp-only because a few things leaked in with 64bit math.

Hi Tom,

I also encountered this problem
( http://lists.denx.de/pipermail/u-boot/2015-January/200123.html )
and found it was indeed when 64-bit maths operations were included.
To be exact, it was this division of a long long in
drivers/video/videomodes.c:

mode->pixclock = 1000000000000LL / EDID_DETAILED_TIMING_PIXEL_CLOCK(*t);

which was part of this commit in Hans' sunxi video series:

0cd5efe videomodes: Add video_edid_dtd_to_ctfb_res_modes helper function

and which was linked into the u-boot binary in a later commit:

e7872f3 sunxi: video: Use video-mode/-timing from videomodes
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
[...]
-obj-$(CONFIG_VIDEO_SUNXI) += sunxi_display.o
+obj-$(CONFIG_VIDEO_SUNXI) += sunxi_display.o videomodes.o

Thanks,
B.R. Oake.