From: Jon Medhurst (Tixy) <tixy@linaro.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2] vexpress: disable cci ace slave ports when booting in non-sec/hyp mode
Date: Mon, 26 Sep 2016 12:30:46 +0100 [thread overview]
Message-ID: <1474889446.2898.13.camel@linaro.org> (raw)
In-Reply-To: <1474648719-2910-1-git-send-email-sudeep.holla@arm.com>
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@linaro.org>
> Acked-by: Marc Zyngier <marc.zyngier@arm.com>
> Signed-off-by: Sudeep Holla <sudeep.holla@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
next prev parent reply other threads:[~2016-09-26 11:30 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-23 15:10 [U-Boot] [PATCH] vexpress: disable cci ace slave ports when booting in non-sec/hyp mode Sudeep Holla
2016-09-23 15:27 ` Marc Zyngier
2016-09-23 16:03 ` Jon Medhurst
2016-09-23 16:13 ` Sudeep Holla
2016-09-23 16:38 ` [U-Boot] [PATCH v2] " Sudeep Holla
2016-09-26 11:30 ` Jon Medhurst [this message]
2016-09-26 11:35 ` Sudeep Holla
2016-09-26 11:37 ` Sudeep Holla
2016-09-26 12:30 ` Jon Medhurst
2016-09-26 12:38 ` Sudeep Holla
2016-09-26 13:19 ` Jon Medhurst
2016-09-26 13:24 ` Sudeep Holla
2016-10-08 17:06 ` [U-Boot] [U-Boot, " Tom Rini
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