diff options
Diffstat (limited to 'hw/acpi')
| -rw-r--r-- | hw/acpi/Makefile.objs | 1 | ||||
| -rw-r--r-- | hw/acpi/core.c | 12 | ||||
| -rw-r--r-- | hw/acpi/memory_hotplug.c | 10 | ||||
| -rw-r--r-- | hw/acpi/tpm.c | 459 |
4 files changed, 473 insertions, 9 deletions
diff --git a/hw/acpi/Makefile.objs b/hw/acpi/Makefile.objs index 11c35bcb44..2d46e3789a 100644 --- a/hw/acpi/Makefile.objs +++ b/hw/acpi/Makefile.objs @@ -11,6 +11,7 @@ common-obj-$(call lnot,$(CONFIG_ACPI_X86)) += acpi-stub.o common-obj-y += acpi_interface.o common-obj-y += bios-linker-loader.o common-obj-y += aml-build.o +common-obj-$(CONFIG_TPM) += tpm.o common-obj-$(CONFIG_IPMI) += ipmi.o common-obj-$(call lnot,$(CONFIG_IPMI)) += ipmi-stub.o diff --git a/hw/acpi/core.c b/hw/acpi/core.c index d6f0709691..47877c0ec1 100644 --- a/hw/acpi/core.c +++ b/hw/acpi/core.c @@ -35,14 +35,18 @@ struct acpi_table_header { uint16_t _length; /* our length, not actual part of the hdr */ /* allows easier parsing for fw_cfg clients */ - char sig[4]; /* ACPI signature (4 ASCII characters) */ + char sig[4] + QEMU_NONSTRING; /* ACPI signature (4 ASCII characters) */ uint32_t length; /* Length of table, in bytes, including header */ uint8_t revision; /* ACPI Specification minor version # */ uint8_t checksum; /* To make sum of entire table == 0 */ - char oem_id[6]; /* OEM identification */ - char oem_table_id[8]; /* OEM table identification */ + char oem_id[6] + QEMU_NONSTRING; /* OEM identification */ + char oem_table_id[8] + QEMU_NONSTRING; /* OEM table identification */ uint32_t oem_revision; /* OEM revision number */ - char asl_compiler_id[4]; /* ASL compiler vendor ID */ + char asl_compiler_id[4] + QEMU_NONSTRING; /* ASL compiler vendor ID */ uint32_t asl_compiler_revision; /* ASL compiler revision number */ } QEMU_PACKED; diff --git a/hw/acpi/memory_hotplug.c b/hw/acpi/memory_hotplug.c index 8c7c1013f3..921cad2c5e 100644 --- a/hw/acpi/memory_hotplug.c +++ b/hw/acpi/memory_hotplug.c @@ -686,15 +686,15 @@ void build_memory_hotplug_aml(Aml *table, uint32_t nr_mem, method = aml_method("_OST", 3, AML_NOTSERIALIZED); s = MEMORY_SLOT_OST_METHOD; - aml_append(method, aml_return(aml_call4( - s, aml_name("_UID"), aml_arg(0), aml_arg(1), aml_arg(2) - ))); + aml_append(method, + aml_call4(s, aml_name("_UID"), aml_arg(0), + aml_arg(1), aml_arg(2))); aml_append(dev, method); method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); s = MEMORY_SLOT_EJECT_METHOD; - aml_append(method, aml_return(aml_call2( - s, aml_name("_UID"), aml_arg(0)))); + aml_append(method, + aml_call2(s, aml_name("_UID"), aml_arg(0))); aml_append(dev, method); aml_append(dev_container, dev); diff --git a/hw/acpi/tpm.c b/hw/acpi/tpm.c new file mode 100644 index 0000000000..b96459e45b --- /dev/null +++ b/hw/acpi/tpm.c @@ -0,0 +1,459 @@ +/* Support for generating ACPI TPM tables + * + * Copyright (C) 2018 IBM, Corp. + * Copyright (C) 2018 Red Hat Inc + * + * 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 <http://www.gnu.org/licenses/>. + */ +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "hw/acpi/tpm.h" + +void tpm_build_ppi_acpi(TPMIf *tpm, Aml *dev) +{ + Aml *method, *field, *ifctx, *ifctx2, *ifctx3, *func_mask, + *not_implemented, *pak, *tpm2, *tpm3, *pprm, *pprq, *zero, *one; + + if (!object_property_get_bool(OBJECT(tpm), "ppi", &error_abort)) { + return; + } + + zero = aml_int(0); + one = aml_int(1); + func_mask = aml_int(TPM_PPI_FUNC_MASK); + not_implemented = aml_int(TPM_PPI_FUNC_NOT_IMPLEMENTED); + + /* + * TPP2 is for the registers that ACPI code used to pass + * the PPI code and parameter (PPRQ, PPRM) to the firmware. + */ + aml_append(dev, + aml_operation_region("TPP2", AML_SYSTEM_MEMORY, + aml_int(TPM_PPI_ADDR_BASE + 0x100), + 0x5A)); + field = aml_field("TPP2", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE); + aml_append(field, aml_named_field("PPIN", 8)); + aml_append(field, aml_named_field("PPIP", 32)); + aml_append(field, aml_named_field("PPRP", 32)); + aml_append(field, aml_named_field("PPRQ", 32)); + aml_append(field, aml_named_field("PPRM", 32)); + aml_append(field, aml_named_field("LPPR", 32)); + aml_append(dev, field); + pprq = aml_name("PPRQ"); + pprm = aml_name("PPRM"); + + aml_append(dev, + aml_operation_region( + "TPP3", AML_SYSTEM_MEMORY, + aml_int(TPM_PPI_ADDR_BASE + + 0x15a /* movv, docs/specs/tpm.txt */), + 0x1)); + field = aml_field("TPP3", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); + aml_append(field, aml_named_field("MOVV", 8)); + aml_append(dev, field); + + /* + * DerefOf in Windows is broken with SYSTEM_MEMORY. Use a dynamic + * operation region inside of a method for getting FUNC[op]. + */ + method = aml_method("TPFN", 1, AML_SERIALIZED); + { + Aml *op = aml_arg(0); + ifctx = aml_if(aml_lgreater_equal(op, aml_int(0x100))); + { + aml_append(ifctx, aml_return(zero)); + } + aml_append(method, ifctx); + + aml_append(method, + aml_operation_region("TPP1", AML_SYSTEM_MEMORY, + aml_add(aml_int(TPM_PPI_ADDR_BASE), op, NULL), 0x1)); + field = aml_field("TPP1", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); + aml_append(field, aml_named_field("TPPF", 8)); + aml_append(method, field); + aml_append(method, aml_return(aml_name("TPPF"))); + } + aml_append(dev, method); + + /* + * Use global TPM2 & TPM3 variables to workaround Windows ACPI bug + * when returning packages. + */ + pak = aml_package(2); + aml_append(pak, zero); + aml_append(pak, zero); + aml_append(dev, aml_name_decl("TPM2", pak)); + tpm2 = aml_name("TPM2"); + + pak = aml_package(3); + aml_append(pak, zero); + aml_append(pak, zero); + aml_append(pak, zero); + aml_append(dev, aml_name_decl("TPM3", pak)); + tpm3 = aml_name("TPM3"); + + method = aml_method("_DSM", 4, AML_SERIALIZED); + { + uint8_t zerobyte[1] = { 0 }; + Aml *function, *arguments, *rev, *op, *op_arg, *op_flags, *uuid; + + uuid = aml_arg(0); + rev = aml_arg(1); + function = aml_arg(2); + arguments = aml_arg(3); + op = aml_local(0); + op_flags = aml_local(1); + + /* Physical Presence Interface */ + ifctx = aml_if( + aml_equal(uuid, + aml_touuid("3DDDFAA6-361B-4EB4-A424-8D10089D1653"))); + { + /* standard DSM query function */ + ifctx2 = aml_if(aml_equal(function, zero)); + { + uint8_t byte_list[2] = { 0xff, 0x01 }; /* functions 1-8 */ + + aml_append(ifctx2, + aml_return(aml_buffer(sizeof(byte_list), + byte_list))); + } + aml_append(ifctx, ifctx2); + + /* + * PPI 1.0: 2.1.1 Get Physical Presence Interface Version + * + * Arg 2 (Integer): Function Index = 1 + * Arg 3 (Package): Arguments = Empty Package + * Returns: Type: String + */ + ifctx2 = aml_if(aml_equal(function, one)); + { + aml_append(ifctx2, aml_return(aml_string("1.3"))); + } + aml_append(ifctx, ifctx2); + + /* + * PPI 1.0: 2.1.3 Submit TPM Operation Request to Pre-OS Environment + * + * Arg 2 (Integer): Function Index = 2 + * Arg 3 (Package): Arguments = Package: Type: Integer + * Operation Value of the Request + * Returns: Type: Integer + * 0: Success + * 1: Operation Value of the Request Not Supported + * 2: General Failure + */ + ifctx2 = aml_if(aml_equal(function, aml_int(2))); + { + /* get opcode */ + aml_append(ifctx2, + aml_store(aml_derefof(aml_index(arguments, + zero)), op)); + + /* get opcode flags */ + aml_append(ifctx2, + aml_store(aml_call1("TPFN", op), op_flags)); + + /* if func[opcode] & TPM_PPI_FUNC_NOT_IMPLEMENTED */ + ifctx3 = aml_if( + aml_equal( + aml_and(op_flags, func_mask, NULL), + not_implemented)); + { + /* 1: Operation Value of the Request Not Supported */ + aml_append(ifctx3, aml_return(one)); + } + aml_append(ifctx2, ifctx3); + + aml_append(ifctx2, aml_store(op, pprq)); + aml_append(ifctx2, aml_store(zero, pprm)); + /* 0: success */ + aml_append(ifctx2, aml_return(zero)); + } + aml_append(ifctx, ifctx2); + + /* + * PPI 1.0: 2.1.4 Get Pending TPM Operation Requested By the OS + * + * Arg 2 (Integer): Function Index = 3 + * Arg 3 (Package): Arguments = Empty Package + * Returns: Type: Package of Integers + * Integer 1: Function Return code + * 0: Success + * 1: General Failure + * Integer 2: Pending operation requested by the OS + * 0: None + * >0: Operation Value of the Pending Request + * Integer 3: Optional argument to pending operation + * requested by the OS + * 0: None + * >0: Argument Value of the Pending Request + */ + ifctx2 = aml_if(aml_equal(function, aml_int(3))); + { + /* + * Revision ID of 1, no integer parameter beyond + * parameter two are expected + */ + ifctx3 = aml_if(aml_equal(rev, one)); + { + /* TPM2[1] = PPRQ */ + aml_append(ifctx3, + aml_store(pprq, aml_index(tpm2, one))); + aml_append(ifctx3, aml_return(tpm2)); + } + aml_append(ifctx2, ifctx3); + + /* + * A return value of {0, 23, 1} indicates that + * operation 23 with argument 1 is pending. + */ + ifctx3 = aml_if(aml_equal(rev, aml_int(2))); + { + /* TPM3[1] = PPRQ */ + aml_append(ifctx3, + aml_store(pprq, aml_index(tpm3, one))); + /* TPM3[2] = PPRM */ + aml_append(ifctx3, + aml_store(pprm, aml_index(tpm3, aml_int(2)))); + aml_append(ifctx3, aml_return(tpm3)); + } + aml_append(ifctx2, ifctx3); + } + aml_append(ifctx, ifctx2); + + /* + * PPI 1.0: 2.1.5 Get Platform-Specific Action to Transition to + * Pre-OS Environment + * + * Arg 2 (Integer): Function Index = 4 + * Arg 3 (Package): Arguments = Empty Package + * Returns: Type: Integer + * 0: None + * 1: Shutdown + * 2: Reboot + * 3: OS Vendor-specific + */ + ifctx2 = aml_if(aml_equal(function, aml_int(4))); + { + /* reboot */ + aml_append(ifctx2, aml_return(aml_int(2))); + } + aml_append(ifctx, ifctx2); + + /* + * PPI 1.0: 2.1.6 Return TPM Operation Response to OS Environment + * + * Arg 2 (Integer): Function Index = 5 + * Arg 3 (Package): Arguments = Empty Package + * Returns: Type: Package of Integer + * Integer 1: Function Return code + * 0: Success + * 1: General Failure + * Integer 2: Most recent operation request + * 0: None + * >0: Operation Value of the most recent request + * Integer 3: Response to the most recent operation request + * 0: Success + * 0x00000001..0x00000FFF: Corresponding TPM + * error code + * 0xFFFFFFF0: User Abort or timeout of dialog + * 0xFFFFFFF1: firmware Failure + */ + ifctx2 = aml_if(aml_equal(function, aml_int(5))); + { + /* TPM3[1] = LPPR */ + aml_append(ifctx2, + aml_store(aml_name("LPPR"), + aml_index(tpm3, one))); + /* TPM3[2] = PPRP */ + aml_append(ifctx2, + aml_store(aml_name("PPRP"), + aml_index(tpm3, aml_int(2)))); + aml_append(ifctx2, aml_return(tpm3)); + } + aml_append(ifctx, ifctx2); + + /* + * PPI 1.0: 2.1.7 Submit preferred user language + * + * Arg 2 (Integer): Function Index = 6 + * Arg 3 (Package): Arguments = String Package + * Preferred language code + * Returns: Type: Integer + * Function Return Code + * 3: Not implemented + */ + ifctx2 = aml_if(aml_equal(function, aml_int(6))); + { + /* 3 = not implemented */ + aml_append(ifctx2, aml_return(aml_int(3))); + } + aml_append(ifctx, ifctx2); + + /* + * PPI 1.1: 2.1.7 Submit TPM Operation Request to + * Pre-OS Environment 2 + * + * Arg 2 (Integer): Function Index = 7 + * Arg 3 (Package): Arguments = Package: Type: Integer + * Integer 1: Operation Value of the Request + * Integer 2: Argument for Operation (optional) + * Returns: Type: Integer + * 0: Success + * 1: Not Implemented + * 2: General Failure + * 3: Operation blocked by current firmware settings + */ + ifctx2 = aml_if(aml_equal(function, aml_int(7))); + { + /* get opcode */ + aml_append(ifctx2, aml_store(aml_derefof(aml_index(arguments, + zero)), + op)); + + /* get opcode flags */ + aml_append(ifctx2, aml_store(aml_call1("TPFN", op), + op_flags)); + /* if func[opcode] & TPM_PPI_FUNC_NOT_IMPLEMENTED */ + ifctx3 = aml_if( + aml_equal( + aml_and(op_flags, func_mask, NULL), + not_implemented)); + { + /* 1: not implemented */ + aml_append(ifctx3, aml_return(one)); + } + aml_append(ifctx2, ifctx3); + + /* if func[opcode] & TPM_PPI_FUNC_BLOCKED */ + ifctx3 = aml_if( + aml_equal( + aml_and(op_flags, func_mask, NULL), + aml_int(TPM_PPI_FUNC_BLOCKED))); + { + /* 3: blocked by firmware */ + aml_append(ifctx3, aml_return(aml_int(3))); + } + aml_append(ifctx2, ifctx3); + + /* revision to integer */ + ifctx3 = aml_if(aml_equal(rev, one)); + { + /* revision 1 */ + /* PPRQ = op */ + aml_append(ifctx3, aml_store(op, pprq)); + /* no argument, PPRM = 0 */ + aml_append(ifctx3, aml_store(zero, pprm)); + } + aml_append(ifctx2, ifctx3); + + ifctx3 = aml_if(aml_equal(rev, aml_int(2))); + { + /* revision 2 */ + /* PPRQ = op */ + op_arg = aml_derefof(aml_index(arguments, one)); + aml_append(ifctx3, aml_store(op, pprq)); + /* PPRM = arg3[1] */ + aml_append(ifctx3, aml_store(op_arg, pprm)); + } + aml_append(ifctx2, ifctx3); + /* 0: success */ + aml_append(ifctx2, aml_return(zero)); + } + aml_append(ifctx, ifctx2); + + /* + * PPI 1.1: 2.1.8 Get User Confirmation Status for Operation + * + * Arg 2 (Integer): Function Index = 8 + * Arg 3 (Package): Arguments = Package: Type: Integer + * Operation Value that may need user confirmation + * Returns: Type: Integer + * 0: Not implemented + * 1: Firmware only + * 2: Blocked for OS by firmware configuration + * 3: Allowed and physically present user required + * 4: Allowed and physically present user not required + */ + ifctx2 = aml_if(aml_equal(function, aml_int(8))); + { + /* get opcode */ + aml_append(ifctx2, + aml_store(aml_derefof(aml_index(arguments, + zero)), + op)); + + /* get opcode flags */ + aml_append(ifctx2, aml_store(aml_call1("TPFN", op), + op_flags)); + /* return confirmation status code */ + aml_append(ifctx2, + aml_return( + aml_and(op_flags, func_mask, NULL))); + } + aml_append(ifctx, ifctx2); + + aml_append(ifctx, aml_return(aml_buffer(1, zerobyte))); + } + aml_append(method, ifctx); + + /* + * "TCG Platform Reset Attack Mitigation Specification 1.00", + * Chapter 6 "ACPI _DSM Function" + */ + ifctx = aml_if( + aml_equal(uuid, + aml_touuid("376054ED-CC13-4675-901C-4756D7F2D45D"))); + { + /* standard DSM query function */ + ifctx2 = aml_if(aml_equal(function, zero)); + { + uint8_t byte_list[1] = { 0x03 }; /* functions 1-2 supported */ + + aml_append(ifctx2, + aml_return(aml_buffer(sizeof(byte_list), + byte_list))); + } + aml_append(ifctx, ifctx2); + + /* + * TCG Platform Reset Attack Mitigation Specification 1.0 Ch.6 + * + * Arg 2 (Integer): Function Index = 1 + * Arg 3 (Package): Arguments = Package: Type: Integer + * Operation Value of the Request + * Returns: Type: Integer + * 0: Success + * 1: General Failure + */ + ifctx2 = aml_if(aml_equal(function, one)); + { + aml_append(ifctx2, + aml_store(aml_derefof(aml_index(arguments, zero)), + op)); + { + aml_append(ifctx2, aml_store(op, aml_name("MOVV"))); + + /* 0: success */ + aml_append(ifctx2, aml_return(zero)); + } + } + aml_append(ifctx, ifctx2); + } + aml_append(method, ifctx); + } + aml_append(dev, method); +} |