EFI from usb HDD

[Michal Simek]

Hi Ilias,

On 8/4/21 12:50 PM, Ilias Apalodimas wrote:
> Hi Michal
> Apologies for my late reply, I was on vacation!

no problem at all.

> 
> [...]
> 
>>>>
>>>> When Abort happened I connected Xilinx debugger via jtag and look at cpu
>>>> backtrace.
>>>
>>> OK, but we are already in grub here and such a trace (in U-Boot)
>>> doesn't make sense. Right?
>>
>> Correct grub already started. But I expect it is still using U-Boot
>> drivers and all exception handlers are still in place from u-boot.
> 
> Yes, U-Boot is still alive and GRUB is accessing some of the
> functionality via Boottime services.



> 
>>
>> Maybe it is just sata/scsi related issue in EFI but weird is that when
>> disks are scan just before command everything is working fine.
>>
>> Should I try to initialize and populate EFI object list all the time?
>> (Remove this code for testing)
>>         /* Initialize once only */
>>         if (efi_obj_list_initialized != OBJ_LIST_NOT_INITIALIZED)
>>                 return efi_obj_list_initialized;
>>
>> Or based on this thread to try your series pointed above?
> 
> This smells like a different init sequence when a command is issued first.
> I'll try having a closer look. Let me know if you find anything else

Did you have a time to look at it?

Thanks,
Michal