From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x22d.google.com (mail-oi0-x22d.google.com [IPv6:2607:f8b0:4003:c06::22d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 7BCA321A16EF1 for ; Tue, 23 May 2017 04:31:20 -0700 (PDT) Received: by mail-oi0-x22d.google.com with SMTP id w10so197366368oif.0 for ; Tue, 23 May 2017 04:31:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=G143hZmTJynDKo3ST7YKjgxKs6QaEz3scoQJJaei/Mk=; b=gM0M/ZpPco0bMOvsc/2FiEzqDM9ZPkr7S1eCSTB8fchIoeB1Tm3tgwDn72eqX2PTxx Vb+fUQviH6627CtuPNYEDR8DLu9guMOM+2td41vfZD8u2KCfr/hq4hfnHqEPS3b2dUCj kfoSgmXrLL7tCMrGwqQcgSdpQj+02n10DN3C29jrCh2q8siiNSAsJBS2ssqQufgfWjfa PTexX61+vJeKGDbKq4waMFN2X7o1qFikFd6vQfRb0daIVbCEh+ThxONC5ve63OSy17+6 jJyh76PHU2GH2gx6Rszi71iOBJFgqaK4cqwvgnsRWmO+oKdmmo5Xu8JdtrgZBxgo1eH+ l5nQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=G143hZmTJynDKo3ST7YKjgxKs6QaEz3scoQJJaei/Mk=; b=EYoZEneoaeTD9rPgbjQzL9JuKgb4yyY0PzpC7OMDH1KbY486AcdRg6b7F26uqv6mTG m7sGX8vJqhhEkP3BDNF01QSSgDASjrAgTqV1Dc6hovu88suIWbKwoRei9LFvvpw8NCSb khceIzxdMdbl0KcHdiKnueyn88IOCV4rB9jExrpLIlnNsA3EDl4z8tbd85zFH+oHi9g6 fJHIRETv5Ja0vAAALeKmBM+MBge+SVDhV0TAdg7N+t6FeCmIIuhf23q51RPzFR2qTHqR C9Zjql/rTpkjDlrveCrKt8y2owrqFobpJUjX4nmLNA9w5JrbTYtDl02KlxKNVE5HNuC0 W/Rg== X-Gm-Message-State: AODbwcDvOtzM6vSSsGmq2lDJUrUJHnZYvmrS3+wRgj3vaiALsREuEzsA TSxSpfNbhaK8HQYJ2Nk2aO7kCjeKmQ== X-Received: by 10.157.10.134 with SMTP id 6mr1609224otq.107.1495539079336; Tue, 23 May 2017 04:31:19 -0700 (PDT) MIME-Version: 1.0 From: GN Keshava Date: Tue, 23 May 2017 11:31:08 +0000 Message-ID: To: "edk2-devel@lists.01.org" X-Content-Filtered-By: Mailman/MimeDel 2.1.22 Subject: UEFI shell vs UEFI BIOS version compatibility X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 May 2017 11:31:20 -0000 Content-Type: text/plain; charset="UTF-8" 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