[ipxe-devel] [PATCH 1/1] efi: provide possibility to disable cpu_nap

Michael Brown mcb30 at ipxe.org
Wed Jul 12 18:05:16 UTC 2017

On 12/07/17 18:57, Heinrich Schuchardt wrote:
> On 07/12/2017 07:47 PM, Michael Brown wrote:
>> On 12/07/17 18:45, Heinrich Schuchardt wrote:
>>> U-Boot runs single-threaded without interrupts.
>>> When cpu_nap is called the process is never woken up again.
>> #ifdef is not allowed for this sort of fix, sorry.
> What is your suggestion?
 > <snip>
> Currently I am also writing patches to add the missing UEFI parts in U-Boot.
> I was able to reach the iPXE console. There are still some parts missing
> to make use of the network.


The best solution is probably to fix U-Boot to ensure that a periodic 
timer interrupt is firing.  UEFI is quite heavily dependent on the 
existence of timer interrupts.


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