On 05/23/2013 04:26 PM, Stephen Warren wrote: > From: Tom Warren <twar...@nvidia.com> > > The non-SPL build of U-Boot on Tegra only runs on a single CPU, and > hence there is no need to enable the SCU when running U-Boot. If an > SMP OS is booted, and it needs the SCU enabled, it will enable the SCU > itself. U-Boot doing so is redundant. > > The one exception is Tegra20, where an enabled SCU is required for some > aspects of PCIe to work correctly. > > Some Tegra SoCs contain CPUs without a software-controlled SCU. In this > case, attempting to turn it on actively causes problems. This is the case > for Tegra114. For example, when running Linux, the first (or at least > some very early) user-space process will trigger the following kernel > message: > > Unhandled fault: imprecise external abort (0x406) at 0x00000000 > > This is typically accompanied by that process receving a fatal signal, > and exiting. Since this process is usually pid 1, this causes total > system boot failure.
Tom, is this patch OK? It's a rather critical bug-fix for Tegra114, so I'd like to make sure it gets into the upcoming release. Thanks. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot