Re: [Xen-users] Issues Booting DomU on TI DRA72 Chip

[Brandon Perez <a0225893@xxxxxx>]

On 07/08/2015 10:40 AM, Ian Campbell wrote:
> If the h/w CNTFRQ register is correct on all physical cpus (not just the
> boot one, worth double checking that) then there is no need to have
> anything in the device tree. So assuming you are letting xl generate the
> guest dtb (instead of say appending it) you should be ok in this regard.
    The specific device that I'm using only has one physical CPU, so 
the CNTFRQ register is definitely correctly initialized, as Dom0 is 
making it though its boot. I'm not doing anything special with regards 
to the device tree, so I assume that means xl should be generating it.
    The specific device that I'm using only has one physical CPU, so 
the CNTFRQ register is definitely correctly initialized, as Dom0 is 
making it though its boot. I'm not doing anything special with regards 
to the device tree, so I assume that means xl should be generating it.
> Next on my list would be the boot is working but the console is b0rked,
> but you have console=hvc0 so that looks good. You do have the HVC stuff
> enabled in the guest kernel's .config, right?
    I'm using the same zImage as the Dom0 kernel, so the configuration 
settings are the same. I doubled checked, and all of the virtual console 
configuration settings are enabled.
> Pressing Ctrl-o on a xen guest console is the equivalent of the magic
> sysrq key, you might find pressing some of those might show what is
> going on.
   If I press the sysrq key combinations, while attached to the guest 
with "xl console", Dom0 responds with the appropriate message, but the 
DomU guest does not acknowledge the sysrq keys.
> Otherwise I'm completely stumped. It's probably worth going back to the
> data sheet and making sure everything matches in the DTS, in particular
> for virtulisation extension related things which might not be used by
> native Linux (e,g, the vtimer interrupt SPI number etc), but really
> that's getting a bit desperate.
>
> Ian.
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