Re: [Xen-devel] [ARM:PATCH v2 1/1] Pass the timer clock-frequency to DOM0

[Suriyan Ramasami <suriyan.r@xxxxxxxxx>]

On Tue, Apr 1, 2014 at 4:12 AM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> On Fri, 2014-03-28 at 14:04 +0000, Julien Grall wrote:
>> That made me think that this is the only board with this issue. I would
>> definitely prefer to fix the clock frequency in U-boot. The bootloader
>> should respect the ARM ARM (see B.8.1.1):
>>
>> "The CNTFRQ register is UNKNOWN at reset, and therefore the counter
>> frequency must written to CNTFRQ as part
>> of the system boot process."
>
> Yes, Suriyan, please exhaust this avenue of attack (fixing u-boot on the
> platform) first.
>
Thank you gentlemen for your comments.
The problem with this board is that the uboot is not entered in secure
mode, and hence the mcr indstruction to set the ARCH timer frequency
cannot be executed in u-boot.
Nonetheless, I am pursuing a course of action where the tzsw blob
(samsung provided with no source) could be modified by taking over an
existing smc call and setting the ARCH timer frequency instead.
I shall keep you guys posted.
- Suriyan

> Ian.
>
>

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel