[Skiboot] [RFC PATCH] plat/qemu: Add BT device

Cédric Le Goater clg at fr.ibm.com
Mon Jan 11 21:19:20 AEDT 2016

On 01/11/2016 11:11 AM, Benjamin Herrenschmidt wrote:
> On Mon, 2016-01-11 at 10:50 +0100, Cédric Le Goater wrote:
>> Well, the current BT device in qemu can be configured on the command 
>> line, it also has a configurable irq number :
>>         -device ipmi-bmc-sim,id=bmc0 -device isa-ipmi-
>> bt,bmc=bmc0,irq=10
>> So, it seems safer to let qemu populate the device tree depending 
>> on its qom-tree than allow skiboot to hardcode non existing devices.
> We could also have the powernv platform instanciate BT by default.

yes. I gave it a try last year and add a hard time to dissociate the BT 
device from the backend, that can be the simulator or an external BMC. 
I will spend some more energy to figure out why the QOM layer was 

Do we have plans for a FSP simulator ? Anyhow a hardcoded BT should not 
be a major obstacle.



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