Re: UEFI shell vs UEFI BIOS version compatibility

[Ramesh R. <rameshr@ami.com>]

Hi,

  Old Shell was installing EFI_SHELL_INTERFACE and new shell is installing the EFI_SHELL_PARAMETERS_PROTOCOL on the shell application. 

Thanks,
Ramesh

-----Original Message-----
From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of GN Keshava
Sent: 23 May 2017 17:01
To: edk2-devel@lists.01.org
Subject: [edk2] UEFI shell vs UEFI BIOS version compatibility

Hi all,

I was using older version of UEFI shell (older EFI shell inside EdkShellBinPkg). It was working fine with my testing PCs (Intel core i5 (Dell Optiplex 7020) (UEFI ver 2.31) as well as Intel Gigabit motherboard (UEFI ver 2.4)). I'm able to load any driver efi and use it.

Now I'm trying newer UEFI shell (UEFI Interactive shell v 2.2, the newer one in ShellBinPkg).
I'm trying to load my driver (and default Fat.efi driver downloaded from github as well) It is working fine with Intel Gigabit motherboard (UEFI ver 2.4). I'm able to load the driver and use it.
But if I try to load the same efi driver on newer UEFI shell v2.2 on Intel core i5 (Dell Optiplex 7020) (UEFI ver 2.31), display is just turning black, and I'm not able to use the shell any further. (But I'm able to load my custom shell application!)

What could be the issue? Any help is much appreciated.

Thanks.
With regards,
Keshava
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