[MinnowBoard] 64-bit vs 32-bit UEFI - What you need to know!

[Darren Hart]

On 9/10/14, 8:22, "Adam Goode" <adam at spicenitz.org> wrote:

>Does this mean that both files can just be put into place? If so,
>could you update the distribution to include both and not worry about
>what the current firmware is? It would simplify the process and
>documentation.

That strikes me as a pretty good suggestion.

--
Darren

>
>
>Adam
>
>
>On Wed, Sep 10, 2014 at 11:08 AM, Darren Hart <dvhart at linux.intel.com>
>wrote:
>> On 9/10/14, 1:35, "Roel Jordans" <r.jordans at tue.nl> wrote:
>>
>>>
>>>>
>>>>http://www.elinux.org/Minnowboard:MaxBios#Switching_from_64-bit_to_32-b
>>>>it
>>>>
>>>> Basically you have to re-flash the firmware with a 32-bit firmware.
>>>> There's a line in the instructions that may confuse some folks,
>>>> specifically using a FirmwareUpdateX64.efi to flash a 32-bit firmware.
>>>> This is because when you go to change the firmware you are running a
>>>> 64-bit firmware, and therefore need a 64-bit EFI program to actually
>>>>do
>>>> the flashing.
>>>>
>>>> If you want to switch back, you'll do the opposite, use
>>>> FirmwareUpdateIA32.efi to flash a 64-bit firmware.
>>>>
>>>
>>>Maybe it's possible to rename those updates (or add some renamed
>>>updates) to something like FirmwareUpdateIA32to64 or something?  That
>>>would probably remove most of the cause for confusion here.
>>
>> That isn't accurate unfortunately. The update tool doesn't care which
>>bit
>> length you are flashing to, you use the same tool to flash to 32b or to
>> 64b, what matters is what firmware you are currently running, and that
>>is
>> what the tool name reflects.
>>
>> --
>> Darren Hart                                     Open Source Technology
>>Center
>> darren.hart at intel.com                                       Intel
>>Corporation
>>
>>
>>
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-- 
Darren Hart					Open Source Technology Center
darren.hart at intel.com				            Intel Corporation