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d="scan'208";a="106160674" From: Jennifer Herbert To: , Xen-devel CC: Jan Beulich , Andrew Cooper , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Jennifer Herbert Subject: [PATCH v3 2/2] acpi: Add TPM2 interface definition. Date: Tue, 25 Apr 2023 17:47:33 +0000 Message-ID: <20230425174733.795961-3-jennifer.herbert@citrix.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230425174733.795961-1-jennifer.herbert@citrix.com> References: <20230425174733.795961-1-jennifer.herbert@citrix.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @citrix.com) X-ZM-MESSAGEID: 1682444925110100005 Content-Type: text/plain; charset="utf-8" This patch introduces an optional TPM 2 interface definition to the ACPI ta= ble, which is to be used as part of a vTPM 2 implementation. Signed-off-by: Jennifer Herbert Acked-by: Jan Beulich Reviewed-by: Jason Andryuk --- docs/misc/xenstore-paths.pandoc | 3 ++- tools/firmware/hvmloader/util.c | 9 ++++++++ tools/libacpi/Makefile | 3 ++- tools/libacpi/acpi2_0.h | 32 +++++++++++++++++++++++++++ tools/libacpi/build.c | 39 +++++++++++++++++++++++++++++++++ tools/libacpi/libacpi.h | 1 + tools/libacpi/ssdt_tpm2.asl | 36 ++++++++++++++++++++++++++++++ 7 files changed, 121 insertions(+), 2 deletions(-) create mode 100644 tools/libacpi/ssdt_tpm2.asl diff --git a/docs/misc/xenstore-paths.pandoc b/docs/misc/xenstore-paths.pan= doc index e67e164855..bffb8ea544 100644 --- a/docs/misc/xenstore-paths.pandoc +++ b/docs/misc/xenstore-paths.pandoc @@ -274,7 +274,8 @@ circumstances where the generation ID needs to be chang= ed. =20 The TPM version to be probed for. =20 -A value of 1 indicates to probe for TPM 1.2. +A value of 1 indicates to probe for TPM 1.2, whereas a value of 2 +indicates that a TPM 2.0 using CRB should be probed. A value of 0 or an invalid value will result in no TPM being probed. If unset, a default of 1 is assumed. =20 diff --git a/tools/firmware/hvmloader/util.c b/tools/firmware/hvmloader/uti= l.c index f39a8e584f..51272530fe 100644 --- a/tools/firmware/hvmloader/util.c +++ b/tools/firmware/hvmloader/util.c @@ -1009,6 +1009,15 @@ void hvmloader_acpi_build_tables(struct acpi_config = *config, config->table_flags |=3D ACPI_HAS_TPM; config->tis_hdr =3D (uint16_t *)ACPI_TIS_HDR_ADDRESS; break; + + case 2: + config->table_flags |=3D ACPI_HAS_TPM; + config->crb_id =3D (uint16_t *)TPM_CRB_INTF_ID; + + mem_hole_populate_ram(TPM_LOG_AREA_ADDRESS >> PAGE_SHIFT, + TPM_LOG_SIZE >> PAGE_SHIFT); + memset((void *)TPM_LOG_AREA_ADDRESS, 0, TPM_LOG_SIZE); + break; } =20 config->numa.nr_vmemranges =3D nr_vmemranges; diff --git a/tools/libacpi/Makefile b/tools/libacpi/Makefile index 60860eaa00..23278f6a61 100644 --- a/tools/libacpi/Makefile +++ b/tools/libacpi/Makefile @@ -25,7 +25,8 @@ C_SRC-$(CONFIG_X86) =3D dsdt_anycpu.c dsdt_15cpu.c dsdt_a= nycpu_qemu_xen.c dsdt_pvh C_SRC-$(CONFIG_ARM_64) =3D dsdt_anycpu_arm.c DSDT_FILES ?=3D $(C_SRC-y) C_SRC =3D $(addprefix $(ACPI_BUILD_DIR)/, $(DSDT_FILES)) -H_SRC =3D $(addprefix $(ACPI_BUILD_DIR)/, ssdt_s3.h ssdt_s4.h ssdt_pm.h ss= dt_tpm.h ssdt_laptop_slate.h) +H_SRC =3D $(addprefix $(ACPI_BUILD_DIR)/, ssdt_s3.h ssdt_s4.h ssdt_pm.h) +H_SRC +=3D $(addprefix $(ACPI_BUILD_DIR)/, ssdt_tpm.h ssdt_tpm2.h ssdt_lap= top_slate.h) =20 MKDSDT_CFLAGS-$(CONFIG_ARM_64) =3D -DCONFIG_ARM_64 MKDSDT_CFLAGS-$(CONFIG_X86) =3D -DCONFIG_X86 diff --git a/tools/libacpi/acpi2_0.h b/tools/libacpi/acpi2_0.h index 2619ba32db..19a43d4b2e 100644 --- a/tools/libacpi/acpi2_0.h +++ b/tools/libacpi/acpi2_0.h @@ -121,6 +121,36 @@ struct acpi_20_tcpa { }; #define ACPI_2_0_TCPA_LAML_SIZE (64*1024) =20 +/* + * TPM2 + */ +struct acpi_20_tpm2 { + struct acpi_header header; + uint16_t platform_class; + uint16_t reserved; + uint64_t control_area_address; + uint32_t start_method; + uint8_t start_method_params[12]; + uint32_t log_area_minimum_length; + uint64_t log_area_start_address; +}; +#define TPM2_ACPI_CLASS_CLIENT 0 +#define TPM2_START_METHOD_CRB 7 + +/* TPM register I/O Mapped region, location of which defined in the + * TCG PC Client Platform TPM Profile Specification for TPM 2.0. + * See table 9 - Only Locality 0 is used here. This is emulated by QEMU. + * Definition of Register space is found in table 12. + */ +#define TPM_REGISTER_BASE 0xFED40000 +#define TPM_CRB_CTRL_REQ (TPM_REGISTER_BASE + 0x40) +#define TPM_CRB_INTF_ID (TPM_REGISTER_BASE + 0x30) + +#define TPM_LOG_AREA_ADDRESS 0xFED50000 + +#define TPM_LOG_AREA_MINIMUM_SIZE (64 << 10) +#define TPM_LOG_SIZE (64 << 10) + /* * Fixed ACPI Description Table Structure (FADT) in ACPI 1.0. */ @@ -431,6 +461,7 @@ struct acpi_20_slit { #define ACPI_2_0_RSDT_SIGNATURE ASCII32('R','S','D','T') #define ACPI_2_0_XSDT_SIGNATURE ASCII32('X','S','D','T') #define ACPI_2_0_TCPA_SIGNATURE ASCII32('T','C','P','A') +#define ACPI_2_0_TPM2_SIGNATURE ASCII32('T','P','M','2') #define ACPI_2_0_HPET_SIGNATURE ASCII32('H','P','E','T') #define ACPI_2_0_WAET_SIGNATURE ASCII32('W','A','E','T') #define ACPI_2_0_SRAT_SIGNATURE ASCII32('S','R','A','T') @@ -444,6 +475,7 @@ struct acpi_20_slit { #define ACPI_2_0_RSDT_REVISION 0x01 #define ACPI_2_0_XSDT_REVISION 0x01 #define ACPI_2_0_TCPA_REVISION 0x02 +#define ACPI_2_0_TPM2_REVISION 0x04 #define ACPI_2_0_HPET_REVISION 0x01 #define ACPI_2_0_WAET_REVISION 0x01 #define ACPI_1_0_FADT_REVISION 0x01 diff --git a/tools/libacpi/build.c b/tools/libacpi/build.c index 716cb49624..359a4dbba4 100644 --- a/tools/libacpi/build.c +++ b/tools/libacpi/build.c @@ -19,6 +19,7 @@ #include "ssdt_s3.h" #include "ssdt_s4.h" #include "ssdt_tpm.h" +#include "ssdt_tpm2.h" #include "ssdt_pm.h" #include "ssdt_laptop_slate.h" #include @@ -352,6 +353,7 @@ static int construct_secondary_tables(struct acpi_ctxt = *ctxt, struct acpi_20_tcpa *tcpa; unsigned char *ssdt; void *lasa; + struct acpi_20_tpm2 *tpm2; =20 /* MADT. */ if ( (config->hvminfo->nr_vcpus > 1) || config->hvminfo->apic_mode ) @@ -450,6 +452,43 @@ static int construct_secondary_tables(struct acpi_ctxt= *ctxt, tcpa->header.length); } break; + + case 2: + /* Check VID stored in bits 37:32 (3rd 16 bit word) of CRB + * identifier register. See table 16 of TCG PC client platform + * TPM profile specification for TPM 2.0. + */ + if ( config->crb_id[2] =3D=3D 0 || config->crb_id[2] =3D=3D 0x= ffff ) + break; + + ssdt =3D ctxt->mem_ops.alloc(ctxt, sizeof(ssdt_tpm2), 16); + if (!ssdt) return -1; + memcpy(ssdt, ssdt_tpm2, sizeof(ssdt_tpm2)); + table_ptrs[nr_tables++] =3D ctxt->mem_ops.v2p(ctxt, ssdt); + + tpm2 =3D ctxt->mem_ops.alloc(ctxt, sizeof(struct acpi_20_tpm2)= , 16); + if (!tpm2) return -1; + memset(tpm2, 0, sizeof(*tpm2)); + table_ptrs[nr_tables++] =3D ctxt->mem_ops.v2p(ctxt, tpm2); + + tpm2->header.signature =3D ACPI_2_0_TPM2_SIGNATURE; + tpm2->header.length =3D sizeof(*tpm2); + tpm2->header.revision =3D ACPI_2_0_TPM2_REVISION; + fixed_strcpy(tpm2->header.oem_id, ACPI_OEM_ID); + fixed_strcpy(tpm2->header.oem_table_id, ACPI_OEM_TABLE_ID); + tpm2->header.oem_revision =3D ACPI_OEM_REVISION; + tpm2->header.creator_id =3D ACPI_CREATOR_ID; + tpm2->header.creator_revision =3D ACPI_CREATOR_REVISION; + tpm2->platform_class =3D TPM2_ACPI_CLASS_CLIENT; + tpm2->control_area_address =3D TPM_CRB_CTRL_REQ; + tpm2->start_method =3D TPM2_START_METHOD_CRB; + tpm2->log_area_minimum_length =3D TPM_LOG_AREA_MINIMUM_SIZE; + tpm2->log_area_start_address =3D TPM_LOG_AREA_ADDRESS; + + set_checksum(tpm2, + offsetof(struct acpi_header, checksum), + tpm2->header.length); + break; } } =20 diff --git a/tools/libacpi/libacpi.h b/tools/libacpi/libacpi.h index f69452401f..0d19f9fc4d 100644 --- a/tools/libacpi/libacpi.h +++ b/tools/libacpi/libacpi.h @@ -80,6 +80,7 @@ struct acpi_config { const struct hvm_info_table *hvminfo; =20 const uint16_t *tis_hdr; + const uint16_t *crb_id; =20 /* * Address where acpi_info should be placed. diff --git a/tools/libacpi/ssdt_tpm2.asl b/tools/libacpi/ssdt_tpm2.asl new file mode 100644 index 0000000000..1801c338df --- /dev/null +++ b/tools/libacpi/ssdt_tpm2.asl @@ -0,0 +1,36 @@ +/* + * ssdt_tpm2.asl + * + * Copyright (c) 2018-2022, Citrix Systems, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published + * by the Free Software Foundation; version 2.1 only. with the special + * exception on linking described in file LICENSE. + * + * 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 Lesser General Public License for more details. + */ + +/* SSDT for TPM CRB Interface for Xen with Qemu device model. */ + +DefinitionBlock ("SSDT_TPM2.aml", "SSDT", 2, "Xen", "HVM", 0) +{ + Device (TPM) + { + Name (_HID, "MSFT0101" /* TPM 2.0 Security Device */) // _HID: Ha= rdware ID + Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings + { + Memory32Fixed (ReadWrite, + 0xFED40000, // Address Base + 0x00001000, // Address Length + ) + }) + Method (_STA, 0, NotSerialized) // _STA: Status + { + Return (0x0F) + } + } +} --=20 2.39.1