[U-Boot] [PATCH v2] vexpress: disable cci ace slave ports when booting in non-sec/hyp mode

[Jon Medhurst (Tixy)]

On Fri, 2016-09-23 at 17:38 +0100, Sudeep Holla wrote:
> Commit f225d39d3093 ("vexpress: Check TC2 firmware support before defaulting
> to nonsec booting") added support to check if the firmware on TC2  is
> configured appropriately before booting in nonsec/hyp mode.
> 
> However when booting in non-secure/hyp mode, CCI control must be done in
> secure firmware and can't  be done in non-secure/hyp mode. In order to
> ensure that, this patch disables the cci slave port inteface so that it
> is not accessed at all.
> 
> Cc: Jon Medhurst <tixy at linaro.org>
> Acked-by: Marc Zyngier <marc.zyngier at arm.com>
> Signed-off-by: Sudeep Holla <sudeep.holla at arm.com>
> ---

This works for me (unsurprisingly) when booting in secure mode. What
kernel and firmware config do I need to use for non-sec mode? I tried
vexpress_defconfig, with bits 12 and 13 cleared in SCC: 0x700
but I get nothing out the console after "Starting kernel ..."

-- 
Tixy