From patchwork Mon Sep 6 12:31:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 12476917 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F38F2C433EF for ; Mon, 6 Sep 2021 12:39:30 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9611960200 for ; Mon, 6 Sep 2021 12:39:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 9611960200 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:40066 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mNDuL-00039u-Gd for qemu-devel@archiver.kernel.org; Mon, 06 Sep 2021 08:39:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48196) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mNDpB-0006KC-EA for qemu-devel@nongnu.org; Mon, 06 Sep 2021 08:34:14 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:26487) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mNDnE-00021T-To for qemu-devel@nongnu.org; Mon, 06 Sep 2021 08:34:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1630931528; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LveBQff8aq/vpMgg77GLqQotmwHLCIyfEeYr0nw6Rhw=; b=FlqFG2VYalmH/rrSk48GsetifvavV/jhqDfhJquHUaqLA/fDeAmmFfIaDqiq4ctYgvB3Xk AGhU/HllAfZg1HRLlZygWVle+n3Qo+WBIAUM4oDHifLSrEJbGWlUfEOlhkAfNWAvnqg5Mv IvQhk7QIm/fxGAMPaXufltpfBbH1CT4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-554-wu_zm4JgPKiETqnVTi4hSw-1; Mon, 06 Sep 2021 08:32:07 -0400 X-MC-Unique: wu_zm4JgPKiETqnVTi4hSw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 483956D253; Mon, 6 Sep 2021 12:32:06 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.39.194.78]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7CC8A77F2C; Mon, 6 Sep 2021 12:32:03 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, mst@redhat.com, imammedo@redhat.com, philmd@redhat.com, peter.maydell@linaro.org, shannon.zhaosl@gmail.com, qemu-arm@nongnu.org, qemu-devel@nongnu.org, ardb@kernel.org, drjones@redhat.com Subject: [PATCH v2 3/3] hw/arm/virt_acpi_build: Generate DBG2 table Date: Mon, 6 Sep 2021 14:31:39 +0200 Message-Id: <20210906123139.93593-4-eric.auger@redhat.com> In-Reply-To: <20210906123139.93593-1-eric.auger@redhat.com> References: <20210906123139.93593-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eric.auger@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gshan@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" ARM SBBR specification mandates DBG2 table (Debug Port Table 2). this latter allows to describe one or more debug ports. Generate an DBG2 table featuring a single debug port, the PL011. The DBG2 specification can be found at: https://docs.microsoft.com/en-us/windows-hardware/drivers/bringup/acpi-debug-port-table?redirectedfrom=MSDN Signed-off-by: Eric Auger --- v1 -> v2: - rebased on Igor's refactoring --- hw/arm/virt-acpi-build.c | 64 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 63 insertions(+), 1 deletion(-) diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index 488ea04eed7..de604e79779 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -512,6 +512,65 @@ build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) acpi_table_composed(linker, &table); } +/* Debug Port Table 2 (DBG2) */ +static void +build_dbg2(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) +{ + AcpiTable table = { .sig = "DBG2", .rev = 3, .oem_id = vms->oem_id, + .oem_table_id = vms->oem_table_id }; + int dbg2devicelength, baseaddroffset = 22, namespace_length; + char name[] = "COM0"; + + acpi_init_table(&table, table_data); + + namespace_length = sizeof name; + dbg2devicelength = baseaddroffset + + sizeof(struct AcpiGenericAddress) + 4 + namespace_length; + + /* offset to the first debug struct */ + build_append_int_noprefix(table_data, 44, 4); + /* number of debug device info struct entries */ + build_append_int_noprefix(table_data, 1, 4); + + /* debug device info structure */ + /* revision */ + build_append_int_noprefix(table_data, 0, 1); + /* length */ + build_append_int_noprefix(table_data, dbg2devicelength, 2); + /* register count */ + build_append_int_noprefix(table_data, 1, 1); + /* name path length */ + build_append_int_noprefix(table_data, namespace_length, 2); + /* name path offset */ + build_append_int_noprefix(table_data, 38, 2); + /* oem data length */ + build_append_int_noprefix(table_data, 0, 2); + /* oem data offset (0 means no OEM data) */ + build_append_int_noprefix(table_data, 0, 2); + /* port type (serial port) */ + build_append_int_noprefix(table_data, 0x8000, 2); + /* port subtype (ARM PL011)*/ + build_append_int_noprefix(table_data, 0x3, 2); + /* reserved */ + build_append_int_noprefix(table_data, 0, 2); + /* base address offset */ + build_append_int_noprefix(table_data, 22, 2); + /* address size offset */ + build_append_int_noprefix(table_data, 34, 2); + + /* BaseAddressRegister */ + build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 8, 0, 1, + vms->memmap[VIRT_UART].base); + + /* AddressSize (PL011 UART length) */ + build_append_int_noprefix(table_data, 0x1000, 4); + + /* NamespaceString */ + g_array_append_vals(table_data, name, namespace_length); + + acpi_table_composed(linker, &table); +}; + /* * ACPI spec, Revision 5.1 Errata A * 5.2.12 Multiple APIC Description Table (MADT) @@ -770,7 +829,7 @@ void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables) dsdt = tables_blob->len; build_dsdt(tables_blob, tables->linker, vms); - /* FADT MADT GTDT MCFG SPCR pointed to by RSDT */ + /* FADT MADT GTDT MCFG SPCR DBG2 pointed to by RSDT */ acpi_add_table(table_offsets, tables_blob); build_fadt_rev5(tables_blob, tables->linker, vms, dsdt); @@ -793,6 +852,9 @@ void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables) acpi_add_table(table_offsets, tables_blob); build_spcr(tables_blob, tables->linker, vms); + acpi_add_table(table_offsets, tables_blob); + build_dbg2(tables_blob, tables->linker, vms); + if (vms->ras) { build_ghes_error_table(tables->hardware_errors, tables->linker); acpi_add_table(table_offsets, tables_blob);