From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=2a00:1450:400c:c09::22f; helo=mail-wm0-x22f.google.com; envelope-from=leif.lindholm@linaro.org; receiver=edk2-devel@lists.01.org Received: from mail-wm0-x22f.google.com (mail-wm0-x22f.google.com [IPv6:2a00:1450:400c:c09::22f]) (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 946F52034A873 for ; Tue, 31 Oct 2017 22:08:12 -0700 (PDT) Received: by mail-wm0-x22f.google.com with SMTP id b189so2582238wmd.4 for ; Tue, 31 Oct 2017 22:12:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=o6nMUtW/qFuPg4EY6PUUSkIfu5UZXWCD4QKT1hbqHgE=; b=e3FCvBdl453QobYMv7PAw0DcFU6Xm6f0kMEfkZicqe2mfoAP/JleWh1Hi/LzNGWPRF Ub3BI3LvbUM0mNuUZsWfhReNMqc2eJ0h/Q8WS2UWXwoMwRVMobH54fAtIcOEFGiY8KX7 vQb4KIpvSMMmhwo8Kva8fWSHZwIcwoppEjd/c= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=o6nMUtW/qFuPg4EY6PUUSkIfu5UZXWCD4QKT1hbqHgE=; b=LLBH+xJoR6baY6rodK6r0f0BJmsfBFQzV6kMuQmjBLCnqnR6kRTUSJVSTggVLS2SXQ FB4rj0lVRSCEwn0/jr/4fhi66J0/2ANcXFZjh1e+2AD6mmpUOKq3QXmgGxHQu5PBgIde DsQeCjPeQDJIC/F7fY4nPS5CiXbQIRJTgnQMsSePS1ty1ropr1unkAeaZvt8XOUJm9UK Du5wjNv1aWqmo4ysPxs0RhLnwGk0FxGOpJJek9SCZBWXkwOtyhj+qwh4ufEIvcVGTK7K 4WAMVQAgBhM5zGbKQ4XJtlz3WzxGea8RPzj1un5OkBsrZoobPFj60FWE+QdwvYZoa11U v49g== X-Gm-Message-State: AMCzsaWFWOM/159RCX5PbXL4Fe53XR0EjQVCVKK1Wsyk8H1PCPYCim8I VUBV7EpXbBkN/Tm5mKdDkDu7J+g5hmM= X-Google-Smtp-Source: ABhQp+TTUxsD0iQXQbJx6sCI9D0kk0lDXTJQBgOmNe60KjzbNQnaB/c+pdE1cZBBMMO3OVW86jjIZA== X-Received: by 10.28.180.130 with SMTP id d124mr3651936wmf.95.1509513123730; Tue, 31 Oct 2017 22:12:03 -0700 (PDT) Received: from bivouac.eciton.net (bivouac.eciton.net. [2a00:1098:0:86:1000:23:0:2]) by smtp.gmail.com with ESMTPSA id h185sm71582wma.19.2017.10.31.22.12.02 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 31 Oct 2017 22:12:02 -0700 (PDT) Date: Wed, 1 Nov 2017 05:12:01 +0000 From: Leif Lindholm To: Ard Biesheuvel Cc: edk2-devel@lists.01.org, graeme.gregory@linaro.org, daniel.thompson@linaro.org, masami.hiramatsu@linaro.org, methavanitpong.pipat@socionext.com Message-ID: <20171101051201.gh4sz5cqudxmzqsr@bivouac.eciton.net> References: <20171031105218.30208-1-ard.biesheuvel@linaro.org> <20171031105218.30208-23-ard.biesheuvel@linaro.org> MIME-Version: 1.0 In-Reply-To: <20171031105218.30208-23-ard.biesheuvel@linaro.org> User-Agent: NeoMutt/20170113 (1.7.2) Subject: Re: [PATCH edk2-platforms v3 22/27] Silicon/SynQuacer/AcpiTables: hide PCI domain #0 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: Wed, 01 Nov 2017 05:08:12 -0000 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Oct 31, 2017 at 10:52:13AM +0000, Ard Biesheuvel wrote: > The ACPI hack to support the broken Synopsys IP only works for endpoints, > not for non-trivial topologies involving switches. Given that the Linaro > developer board has a switch soldered on, there is really no way to do > anything useful with it when booting via ACPI. On top of that, the ITS > can only be enabled for a single RC. > > So let's hide PCIe domain #0 entirely from the OS. We may be able to > expose the USB and SATA ports at some point using another ungodly hack, > but for now, this allows us to boot the board with unmodified installers > and install onto NVME. > > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Ard Biesheuvel Reviewed-by: Leif Lindholm