From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julien Grall <julien.grall@linaro.org>
Subject: Re: [PATCH FOR-4.5] xen: arm64: Handle memory banks
 which are not 1GB aligned
Date: Mon, 13 Oct 2014 13:45:17 +0100
Message-ID: <543BC95D.5030403@linaro.org>
References: <1412952194-3595-1-git-send-email-ian.campbell@citrix.com>	<543879AD.70402@amd.com>
	<CALicx6sHpybo3GcQHq60E5aak8DR=Ni2Qecs-8=J=8HikJP63w@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xen.org>
In-Reply-To: <CALicx6sHpybo3GcQHq60E5aak8DR=Ni2Qecs-8=J=8HikJP63w@mail.gmail.com>
List-Unsubscribe: <http://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Sender: xen-devel-bounces@lists.xen.org
Errors-To: xen-devel-bounces@lists.xen.org
To: Vijay Kilari <vijay.kilari@gmail.com>, Suravee Suthikulanit <suravee.suthikulpanit@amd.com>
Cc: Roy Franz <roy.franz@linaro.org>, Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Tim Deegan <tim@xen.org>, Ian Campbell <ian.campbell@citrix.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
List-Id: xen-devel@lists.xenproject.org

On 10/13/2014 01:35 PM, Vijay Kilari wrote:
> Hi Roy,

Hi all,

>    I too observe the same issue. I have enabled uefi_debug
> 
> (XEN) DOM0: bootconsole [uart0] enabled
> (XEN) DOM0: Memory limited to 512MB
> (XEN) DOM0: efi: Getting parameters from FDT:
> (XEN) DOM0: efi:   System Table: 0x000000007fb79f18
> (XEN) DOM0: efi:   MemMap Address: 0x000000007a88c018
> (XEN) DOM0: efi:   MemMap Size: 0x000004e0
> (XEN) DOM0: efi:   MemMap Desc. Size: 0x00000030
> (XEN) DOM0: efi:   MemMap Desc. Version: 0x00000001
> (XEN) DOM0: Unhandled fault: ttbr address size fault (0x96000000) at
> 0xffffffbffbc7ff18
> (XEN) DOM0: Internal error: : 96000000 [#1] PREEMPT SMP
> (XEN) DOM0: Modules linked in:
> (XEN) DOM0: CPU: 0 PID: 0 Comm: swapper Not tainted 3.16.0-rc4+ #3
> (XEN) DOM0: task: ffffffc0007048a0 ti: ffffffc0006f8000 task.ti:
> ffffffc0006f8000
> (XEN) DOM0: PC is at uefi_init+0x94/0x1a0
> (XEN) DOM0: LR is at uefi_init+0x84/0x1a0
> 
> I have not digged into the issue. Xen has not mapped this table to Dom0?

DOM0 should only boot with Device Tree and not using EFI. I suspect that
Xen is copying the EFI properties/nodes in the DOM0 DT.

We have to remove at least the following parameters from the device tree:

- linux,uefi-system-table
- linux,uefi-mmap-start
- linux,uefi-mmap-size
- linux,uefi-mmap-desc-size
- linux,uefi-mmap-desc-ver

Regards,

-- 
Julien Grall