From 711b20b479aa96e26324371f10aff514681ea24c Mon Sep 17 00:00:00 2001 From: Stefan Berger Date: Mon, 11 Aug 2014 16:33:36 -0400 Subject: Add ACPI tables for TPM Add an SSDT ACPI table for the TPM device. Add a TCPA table for BIOS logging area when a TPM is being used. The latter follows this spec here: http://www.trustedcomputinggroup.org/files/static_page_files/DCD4188E-1A4B-B294-D050A155FB6F7385/TCG_ACPIGeneralSpecification_PublicReview.pdf This patch has Michael Tsirkin's patches folded in. Signed-off-by: Stefan Berger Signed-off-by: Michael S. Tsirkin Reviewed-by: Michael S. Tsirkin --- hw/i386/Makefile.objs | 3 ++- hw/i386/acpi-build.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ hw/i386/acpi-defs.h | 11 +++++++++++ hw/i386/ssdt-tpm.dsl | 43 +++++++++++++++++++++++++++++++++++++++++++ hw/tpm/tpm_tis.h | 8 +------- include/hw/acpi/tpm.h | 29 +++++++++++++++++++++++++++++ include/sysemu/tpm.h | 7 +++++++ 7 files changed, 138 insertions(+), 8 deletions(-) create mode 100644 hw/i386/ssdt-tpm.dsl create mode 100644 include/hw/acpi/tpm.h diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs index 48014abf0a..3688cf8243 100644 --- a/hw/i386/Makefile.objs +++ b/hw/i386/Makefile.objs @@ -10,7 +10,8 @@ obj-y += bios-linker-loader.o hw/i386/acpi-build.o: hw/i386/acpi-build.c hw/i386/acpi-dsdt.hex \ hw/i386/ssdt-proc.hex hw/i386/ssdt-pcihp.hex hw/i386/ssdt-misc.hex \ hw/i386/acpi-dsdt.hex hw/i386/q35-acpi-dsdt.hex \ - hw/i386/q35-acpi-dsdt.hex hw/i386/ssdt-mem.hex + hw/i386/q35-acpi-dsdt.hex hw/i386/ssdt-mem.hex \ + hw/i386/ssdt-tpm.hex iasl-option=$(shell if test -z "`$(1) $(2) 2>&1 > /dev/null`" \ ; then echo "$(2)"; else echo "$(3)"; fi ;) diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 10b84d039b..85e58347ce 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -40,6 +40,8 @@ #include "hw/loader.h" #include "hw/isa/isa.h" #include "hw/acpi/memory_hotplug.h" +#include "sysemu/tpm.h" +#include "hw/acpi/tpm.h" /* Supported chipsets: */ #include "hw/acpi/piix4.h" @@ -88,6 +90,7 @@ typedef struct AcpiPmInfo { typedef struct AcpiMiscInfo { bool has_hpet; + bool has_tpm; DECLARE_BITMAP(slot_hotplug_enable, PCI_SLOT_MAX); const unsigned char *dsdt_code; unsigned dsdt_size; @@ -210,6 +213,7 @@ static void acpi_get_pm_info(AcpiPmInfo *pm) static void acpi_get_misc_info(AcpiMiscInfo *info) { info->has_hpet = hpet_find(); + info->has_tpm = tpm_find(); info->pvpanic_port = pvpanic_port(); } @@ -698,6 +702,7 @@ static inline char acpi_get_hex(uint32_t val) #include "hw/i386/ssdt-misc.hex" #include "hw/i386/ssdt-pcihp.hex" +#include "hw/i386/ssdt-tpm.hex" static void build_append_notify_method(GArray *device, const char *name, @@ -1201,6 +1206,39 @@ build_hpet(GArray *table_data, GArray *linker) (void *)hpet, "HPET", sizeof(*hpet), 1); } +static void +build_tpm_tcpa(GArray *table_data, GArray *linker) +{ + Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa); + /* the log area will come right after the TCPA table */ + uint64_t log_area_start_address = acpi_data_len(table_data); + + tcpa->platform_class = cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT); + tcpa->log_area_minimum_length = cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE); + tcpa->log_area_start_address = cpu_to_le64(log_area_start_address); + + /* log area start address to be filled by Guest linker */ + bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, + ACPI_BUILD_TABLE_FILE, + table_data, &tcpa->log_area_start_address, + sizeof(tcpa->log_area_start_address)); + + build_header(linker, table_data, + (void *)tcpa, "TCPA", sizeof(*tcpa), 2); + + /* now only get the log area and with that modify table_data */ + acpi_data_push(table_data, TPM_LOG_AREA_MINIMUM_SIZE); +} + +static void +build_tpm_ssdt(GArray *table_data, GArray *linker) +{ + void *tpm_ptr; + + tpm_ptr = acpi_data_push(table_data, sizeof(ssdt_tpm_aml)); + memcpy(tpm_ptr, ssdt_tpm_aml, sizeof(ssdt_tpm_aml)); +} + typedef enum { MEM_AFFINITY_NOFLAGS = 0, MEM_AFFINITY_ENABLED = (1 << 0), @@ -1531,6 +1569,13 @@ void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables) acpi_add_table(table_offsets, tables->table_data); build_hpet(tables->table_data, tables->linker); } + if (misc.has_tpm) { + acpi_add_table(table_offsets, tables->table_data); + build_tpm_tcpa(tables->table_data, tables->linker); + + acpi_add_table(table_offsets, tables->table_data); + build_tpm_ssdt(tables->table_data, tables->linker); + } if (guest_info->numa_nodes) { acpi_add_table(table_offsets, tables->table_data); build_srat(tables->table_data, tables->linker, &cpu, guest_info); diff --git a/hw/i386/acpi-defs.h b/hw/i386/acpi-defs.h index e93babb026..1bc974a363 100644 --- a/hw/i386/acpi-defs.h +++ b/hw/i386/acpi-defs.h @@ -314,4 +314,15 @@ struct AcpiTableMcfg { } QEMU_PACKED; typedef struct AcpiTableMcfg AcpiTableMcfg; +/* + * TCPA Description Table + */ +struct Acpi20Tcpa { + ACPI_TABLE_HEADER_DEF /* ACPI common table header */ + uint16_t platform_class; + uint32_t log_area_minimum_length; + uint64_t log_area_start_address; +} QEMU_PACKED; +typedef struct Acpi20Tcpa Acpi20Tcpa; + #endif diff --git a/hw/i386/ssdt-tpm.dsl b/hw/i386/ssdt-tpm.dsl new file mode 100644 index 0000000000..75d96910bf --- /dev/null +++ b/hw/i386/ssdt-tpm.dsl @@ -0,0 +1,43 @@ +/* + * 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 "hw/acpi/tpm.h" + +ACPI_EXTRACT_ALL_CODE ssdt_tpm_aml + +DefinitionBlock ( + "ssdt-tpm.aml", // Output Filename + "SSDT", // Signature + 0x01, // SSDT Compliance Revision + "BXPC", // OEMID + "BXSSDT", // TABLE ID + 0x1 // OEM Revision + ) +{ + Scope(\_SB) { + /* TPM with emulated TPM TIS interface */ + Device (TPM) { + Name (_HID, EisaID ("PNP0C31")) + Name (_CRS, ResourceTemplate () + { + Memory32Fixed (ReadWrite, TPM_TIS_ADDR_BASE, TPM_TIS_ADDR_SIZE) + // older Linux tpm_tis drivers do not work with IRQ + //IRQNoFlags () {TPM_TIS_IRQ} + }) + Method (_STA, 0, NotSerialized) { + Return (0x0F) + } + } + } +} diff --git a/hw/tpm/tpm_tis.h b/hw/tpm/tpm_tis.h index 916152ae3e..1a0db23367 100644 --- a/hw/tpm/tpm_tis.h +++ b/hw/tpm/tpm_tis.h @@ -18,23 +18,17 @@ #define TPM_TPM_TIS_H #include "hw/isa/isa.h" +#include "hw/acpi/tpm.h" #include "qemu-common.h" -#define TPM_TIS_ADDR_BASE 0xFED40000 - #define TPM_TIS_NUM_LOCALITIES 5 /* per spec */ #define TPM_TIS_LOCALITY_SHIFT 12 #define TPM_TIS_NO_LOCALITY 0xff #define TPM_TIS_IS_VALID_LOCTY(x) ((x) < TPM_TIS_NUM_LOCALITIES) -#define TPM_TIS_IRQ 5 - #define TPM_TIS_BUFFER_MAX 4096 -#define TYPE_TPM_TIS "tpm-tis" - - typedef enum { TPM_TIS_STATE_IDLE = 0, TPM_TIS_STATE_READY, diff --git a/include/hw/acpi/tpm.h b/include/hw/acpi/tpm.h new file mode 100644 index 0000000000..792fcbf5b1 --- /dev/null +++ b/include/hw/acpi/tpm.h @@ -0,0 +1,29 @@ +/* + * tpm.h - TPM ACPI definitions + * + * Copyright (C) 2014 IBM Corporation + * + * Authors: + * Stefan Berger + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + * Implementation of the TIS interface according to specs found at + * http://www.trustedcomputinggroup.org + * + */ +#ifndef HW_ACPI_TPM_H +#define HW_ACPI_TPM_H + +#define TPM_TIS_ADDR_BASE 0xFED40000 +#define TPM_TIS_ADDR_SIZE 0x5000 + +#define TPM_TIS_IRQ 5 + +#define TPM_LOG_AREA_MINIMUM_SIZE (64 * 1024) + +#define TPM_TCPA_ACPI_CLASS_CLIENT 0 +#define TPM_TCPA_ACPI_CLASS_SERVER 1 + +#endif /* HW_ACPI_TPM_H */ diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h index 13febddbee..9b81ce9189 100644 --- a/include/sysemu/tpm.h +++ b/include/sysemu/tpm.h @@ -20,4 +20,11 @@ int tpm_config_parse(QemuOptsList *opts_list, const char *optarg); int tpm_init(void); void tpm_cleanup(void); +#define TYPE_TPM_TIS "tpm-tis" + +static inline bool tpm_find(void) +{ + return object_resolve_path_type("", TYPE_TPM_TIS, NULL); +} + #endif /* QEMU_TPM_H */ -- cgit v1.2.3