On 26/09/16 12:35, Sudeep Holla wrote:
On 26/09/16 12:30, Jon Medhurst (Tixy) wrote:
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 <t...@linaro.org>
Acked-by: Marc Zyngier <marc.zyng...@arm.com>
Signed-off-by: Sudeep Holla <sudeep.ho...@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 ..."
I just flipped bit 12 and 13 in SCC: 0x700 to switch between MCPM/secure
and HYP/non-secure mode. All other images/settings remain the same.
So IIUC, with vexpress_defconfig + above SCC change you are seeing a
hand, I will check that. I am using multi_v7_defconfig.
+ the patches from Lorenzo fixing MCPM code in the kernel [1] as
mentioned first email carrying this patch.
--
Regards,
Sudeep
[1] http://www.spinics.net/lists/arm-kernel/msg533715.html
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
