From patchwork Fri Aug 18 09:50:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 13357642 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 71AEFC05052 for ; Fri, 18 Aug 2023 10:00:48 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qWwGf-0004sI-07; Fri, 18 Aug 2023 05:59:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qWwFY-00048e-T5 for qemu-devel@nongnu.org; Fri, 18 Aug 2023 05:58:37 -0400 Received: from mgamail.intel.com ([192.55.52.120]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qWwFU-0000JL-Ig for qemu-devel@nongnu.org; Fri, 18 Aug 2023 05:58:36 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1692352713; x=1723888713; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=jQCpddz9uS9ZdxkN9zlBK96sJpDKmGkNPU8O0nWCTyU=; b=n1IlexSvBvoGmL7qHh5AWdU7mGI6gHynvo7h4E5qZwYL9U8GJk89Fa6E JsfKmbGzv8fmZH8txDUDWbA1mgk0tP0IwqVtCqr85Y3KiqQd13TjLBh5d O2F8moq7ZtroPxsCmrvDAFrKm7Z9R0lmQapDrRVPmbwK7L8DWiYDP0OH0 ls2mhUyhy3Grwj2NwQujJbs0s4O5v/m0tXSzsAsnwv9IgYpO67x2Twx40 sjfkpvwV4C1pC7r3KbHhOGy8mHn7RfBf6bpF27hZN+bqi0W/FQjqU5iTY CO55HIdqBiwqUMtLIhhHf/nwbqUjwZSLzlWWGXps+QrKm4+e6XGPwtttG g==; X-IronPort-AV: E=McAfee;i="6600,9927,10805"; a="371966436" X-IronPort-AV: E=Sophos;i="6.01,182,1684825200"; d="scan'208";a="371966436" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Aug 2023 02:57:24 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10805"; a="849235345" X-IronPort-AV: E=Sophos;i="6.01,182,1684825200"; d="scan'208";a="849235345" Received: from lxy-clx-4s.sh.intel.com ([10.239.48.46]) by fmsmga002.fm.intel.com with ESMTP; 18 Aug 2023 02:57:19 -0700 From: Xiaoyao Li To: Paolo Bonzini , Richard Henderson , "Michael S. Tsirkin" , Marcel Apfelbaum , Igor Mammedov , Ani Sinha , Peter Xu , David Hildenbrand , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , =?utf-8?q?Dani?= =?utf-8?q?el_P=2E_Berrang=C3=A9?= , Cornelia Huck , Eric Blake , Markus Armbruster , Marcelo Tosatti , Gerd Hoffmann Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, Eduardo Habkost , Laszlo Ersek , xiaoyao.li@intel.com, Isaku Yamahata , erdemaktas@google.com, Chenyi Qiang Subject: [PATCH v2 34/58] i386/tdx: Setup the TD HOB list Date: Fri, 18 Aug 2023 05:50:17 -0400 Message-Id: <20230818095041.1973309-35-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230818095041.1973309-1-xiaoyao.li@intel.com> References: <20230818095041.1973309-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.55.52.120; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.021, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The TD HOB list is used to pass the information from VMM to TDVF. The TD HOB must include PHIT HOB and Resource Descriptor HOB. More details can be found in TDVF specification and PI specification. Build the TD HOB in TDX's machine_init_done callback. Co-developed-by: Isaku Yamahata Signed-off-by: Isaku Yamahata Co-developed-by: Sean Christopherson Signed-off-by: Sean Christopherson Signed-off-by: Xiaoyao Li Acked-by: Gerd Hoffmann --- Changes from RFC v4: - drop the code of adding mmio resources since OVMF prepares all the MMIO hob itself. --- hw/i386/meson.build | 2 +- hw/i386/tdvf-hob.c | 147 ++++++++++++++++++++++++++++++++++++++++++ hw/i386/tdvf-hob.h | 24 +++++++ target/i386/kvm/tdx.c | 16 +++++ 4 files changed, 188 insertions(+), 1 deletion(-) create mode 100644 hw/i386/tdvf-hob.c create mode 100644 hw/i386/tdvf-hob.h diff --git a/hw/i386/meson.build b/hw/i386/meson.build index 45d90bb2af52..b38ea89665f0 100644 --- a/hw/i386/meson.build +++ b/hw/i386/meson.build @@ -28,7 +28,7 @@ i386_ss.add(when: 'CONFIG_PC', if_true: files( 'port92.c')) i386_ss.add(when: 'CONFIG_X86_FW_OVMF', if_true: files('pc_sysfw_ovmf.c'), if_false: files('pc_sysfw_ovmf-stubs.c')) -i386_ss.add(when: 'CONFIG_TDX', if_true: files('tdvf.c')) +i386_ss.add(when: 'CONFIG_TDX', if_true: files('tdvf.c', 'tdvf-hob.c')) subdir('kvm') subdir('xen') diff --git a/hw/i386/tdvf-hob.c b/hw/i386/tdvf-hob.c new file mode 100644 index 000000000000..0da6ff2df576 --- /dev/null +++ b/hw/i386/tdvf-hob.c @@ -0,0 +1,147 @@ +/* + * SPDX-License-Identifier: GPL-2.0-or-later + + * Copyright (c) 2020 Intel Corporation + * Author: Isaku Yamahata + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License along + * with this program; if not, see . + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "qemu/error-report.h" +#include "e820_memory_layout.h" +#include "hw/i386/pc.h" +#include "hw/i386/x86.h" +#include "hw/pci/pcie_host.h" +#include "sysemu/kvm.h" +#include "standard-headers/uefi/uefi.h" +#include "tdvf-hob.h" + +typedef struct TdvfHob { + hwaddr hob_addr; + void *ptr; + int size; + + /* working area */ + void *current; + void *end; +} TdvfHob; + +static uint64_t tdvf_current_guest_addr(const TdvfHob *hob) +{ + return hob->hob_addr + (hob->current - hob->ptr); +} + +static void tdvf_align(TdvfHob *hob, size_t align) +{ + hob->current = QEMU_ALIGN_PTR_UP(hob->current, align); +} + +static void *tdvf_get_area(TdvfHob *hob, uint64_t size) +{ + void *ret; + + if (hob->current + size > hob->end) { + error_report("TD_HOB overrun, size = 0x%" PRIx64, size); + exit(1); + } + + ret = hob->current; + hob->current += size; + tdvf_align(hob, 8); + return ret; +} + +static void tdvf_hob_add_memory_resources(TdxGuest *tdx, TdvfHob *hob) +{ + EFI_HOB_RESOURCE_DESCRIPTOR *region; + EFI_RESOURCE_ATTRIBUTE_TYPE attr; + EFI_RESOURCE_TYPE resource_type; + + TdxRamEntry *e; + int i; + + for (i = 0; i < tdx->nr_ram_entries; i++) { + e = &tdx->ram_entries[i]; + + if (e->type == TDX_RAM_UNACCEPTED) { + resource_type = EFI_RESOURCE_MEMORY_UNACCEPTED; + attr = EFI_RESOURCE_ATTRIBUTE_TDVF_UNACCEPTED; + } else if (e->type == TDX_RAM_ADDED){ + resource_type = EFI_RESOURCE_SYSTEM_MEMORY; + attr = EFI_RESOURCE_ATTRIBUTE_TDVF_PRIVATE; + } else { + error_report("unknown TDX_RAM_ENTRY type %d", e->type); + exit(1); + } + + region = tdvf_get_area(hob, sizeof(*region)); + *region = (EFI_HOB_RESOURCE_DESCRIPTOR) { + .Header = { + .HobType = EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, + .HobLength = cpu_to_le16(sizeof(*region)), + .Reserved = cpu_to_le32(0), + }, + .Owner = EFI_HOB_OWNER_ZERO, + .ResourceType = cpu_to_le32(resource_type), + .ResourceAttribute = cpu_to_le32(attr), + .PhysicalStart = cpu_to_le64(e->address), + .ResourceLength = cpu_to_le64(e->length), + }; + } +} + +void tdvf_hob_create(TdxGuest *tdx, TdxFirmwareEntry *td_hob) +{ + TdvfHob hob = { + .hob_addr = td_hob->address, + .size = td_hob->size, + .ptr = td_hob->mem_ptr, + + .current = td_hob->mem_ptr, + .end = td_hob->mem_ptr + td_hob->size, + }; + + EFI_HOB_GENERIC_HEADER *last_hob; + EFI_HOB_HANDOFF_INFO_TABLE *hit; + + /* Note, Efi{Free}Memory{Bottom,Top} are ignored, leave 'em zeroed. */ + hit = tdvf_get_area(&hob, sizeof(*hit)); + *hit = (EFI_HOB_HANDOFF_INFO_TABLE) { + .Header = { + .HobType = EFI_HOB_TYPE_HANDOFF, + .HobLength = cpu_to_le16(sizeof(*hit)), + .Reserved = cpu_to_le32(0), + }, + .Version = cpu_to_le32(EFI_HOB_HANDOFF_TABLE_VERSION), + .BootMode = cpu_to_le32(0), + .EfiMemoryTop = cpu_to_le64(0), + .EfiMemoryBottom = cpu_to_le64(0), + .EfiFreeMemoryTop = cpu_to_le64(0), + .EfiFreeMemoryBottom = cpu_to_le64(0), + .EfiEndOfHobList = cpu_to_le64(0), /* initialized later */ + }; + + tdvf_hob_add_memory_resources(tdx, &hob); + + last_hob = tdvf_get_area(&hob, sizeof(*last_hob)); + *last_hob = (EFI_HOB_GENERIC_HEADER) { + .HobType = EFI_HOB_TYPE_END_OF_HOB_LIST, + .HobLength = cpu_to_le16(sizeof(*last_hob)), + .Reserved = cpu_to_le32(0), + }; + hit->EfiEndOfHobList = tdvf_current_guest_addr(&hob); +} diff --git a/hw/i386/tdvf-hob.h b/hw/i386/tdvf-hob.h new file mode 100644 index 000000000000..1b737e946a8d --- /dev/null +++ b/hw/i386/tdvf-hob.h @@ -0,0 +1,24 @@ +#ifndef HW_I386_TD_HOB_H +#define HW_I386_TD_HOB_H + +#include "hw/i386/tdvf.h" +#include "target/i386/kvm/tdx.h" + +void tdvf_hob_create(TdxGuest *tdx, TdxFirmwareEntry *td_hob); + +#define EFI_RESOURCE_ATTRIBUTE_TDVF_PRIVATE \ + (EFI_RESOURCE_ATTRIBUTE_PRESENT | \ + EFI_RESOURCE_ATTRIBUTE_INITIALIZED | \ + EFI_RESOURCE_ATTRIBUTE_TESTED) + +#define EFI_RESOURCE_ATTRIBUTE_TDVF_UNACCEPTED \ + (EFI_RESOURCE_ATTRIBUTE_PRESENT | \ + EFI_RESOURCE_ATTRIBUTE_INITIALIZED | \ + EFI_RESOURCE_ATTRIBUTE_TESTED) + +#define EFI_RESOURCE_ATTRIBUTE_TDVF_MMIO \ + (EFI_RESOURCE_ATTRIBUTE_PRESENT | \ + EFI_RESOURCE_ATTRIBUTE_INITIALIZED | \ + EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE) + +#endif diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index ed617ebab266..3a93ad293129 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -25,6 +25,7 @@ #include "hw/i386/e820_memory_layout.h" #include "hw/i386/x86.h" #include "hw/i386/tdvf.h" +#include "hw/i386/tdvf-hob.h" #include "kvm_i386.h" #include "tdx.h" #include "../cpu-internal.h" @@ -455,6 +456,19 @@ static void update_tdx_cpuid_lookup_by_tdx_caps(void) (tdx_caps->xfam_fixed1 & CPUID_XSTATE_XSS_MASK) >> 32; } +static TdxFirmwareEntry *tdx_get_hob_entry(TdxGuest *tdx) +{ + TdxFirmwareEntry *entry; + + for_each_tdx_fw_entry(&tdx->tdvf, entry) { + if (entry->type == TDVF_SECTION_TYPE_TD_HOB) { + return entry; + } + } + error_report("TDVF metadata doesn't specify TD_HOB location."); + exit(1); +} + static void tdx_add_ram_entry(uint64_t address, uint64_t length, uint32_t type) { uint32_t nr_entries = tdx_guest->nr_ram_entries; @@ -585,6 +599,8 @@ static void tdx_finalize_vm(Notifier *notifier, void *unused) qsort(tdx_guest->ram_entries, tdx_guest->nr_ram_entries, sizeof(TdxRamEntry), &tdx_ram_entry_compare); + + tdvf_hob_create(tdx_guest, tdx_get_hob_entry(tdx_guest)); } static Notifier tdx_machine_done_notify = {