vc/tcg/opal: add OPAL packet builder for S3 unlock
Add the OPAL packet builder and unlock logic used by the SMM resume path. Uses the TCG storage encoder and NVMe Security Send/Receive helpers to perform the Admin1/User1 Set Global Range unlock sequence. TEST=tested with rest of patch train Change-Id: I4cdb16e13c1aeb89648db49672b77598a8b42fac Signed-off-by: Sean Rhodes <sean@starlabs.systems> Reviewed-on: https://review.coreboot.org/c/coreboot/+/91658 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
Sean Rhodes
Matt DeVillier
parent
30cd6efc29
commit
8ff1a9a08c
3 changed files with 478 additions and 0 deletions
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@ -2,6 +2,10 @@
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CPPFLAGS_common-$(CONFIG_TCG_OPAL_S3_UNLOCK) += -I$(src)/vendorcode/intel/tcg_storage_core
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ramstage-$(CONFIG_TCG_OPAL_S3_UNLOCK) += opal_s3_resume.c
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smm-$(CONFIG_TCG_OPAL_S3_UNLOCK) += opal_s3_smm.c
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smm-$(CONFIG_TCG_OPAL_S3_UNLOCK) += opal_nvme.c
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smm-$(CONFIG_TCG_OPAL_S3_UNLOCK) += ../../../vendorcode/tcg/opal/opal_unlock.c
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smm-$(CONFIG_TCG_OPAL_S3_UNLOCK) += ../../../vendorcode/intel/tcg_storage_core/tcg_storage_core.c
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smm-$(CONFIG_TCG_OPAL_S3_UNLOCK) += ../../../vendorcode/intel/tcg_storage_core/tcg_storage_util.c
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461
src/vendorcode/tcg/opal/opal_unlock.c
Normal file
461
src/vendorcode/tcg/opal/opal_unlock.c
Normal file
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@ -0,0 +1,461 @@
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/* SPDX-License-Identifier: GPL-2.0-only */
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#include "opal_unlock.h"
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#include <vendorcode/intel/tcg_storage_core/tcg_storage_core_lib.h>
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#include <commonlib/bsd/helpers.h>
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#include <console/console.h>
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#include <cpu/x86/smm.h>
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#include <delay.h>
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#include <security/tcg/opal_s3/opal_nvme.h>
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#include <security/tcg/opal_s3/opal_secure.h>
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#include <string.h>
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#include <types.h>
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#define TCG_OPAL_SECURITY_PROTOCOL_1 0x01
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/* Minimal Opal UIDs needed for S3 unlock. */
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#define OPAL_UID_LOCKING_SP \
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TCG_TO_UID(0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x02)
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#define OPAL_LOCKING_SP_ADMIN1_AUTHORITY \
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TCG_TO_UID(0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0x00, 0x01)
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#define OPAL_LOCKING_SP_USER1_AUTHORITY \
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TCG_TO_UID(0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x01)
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#define OPAL_LOCKING_SP_LOCKING_GLOBALRANGE \
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TCG_TO_UID(0x00, 0x00, 0x08, 0x02, 0x00, 0x00, 0x00, 0x01)
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#define TRUSTED_COMMAND_TIMEOUT_NS ((u64)5 * 1000 * 1000 * 1000ULL)
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#define OPAL_NVME_PAGE_SIZE 4096U
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#define OPAL_NVME_QUEUE_PAGES 2U
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#define OPAL_NVME_SCRATCH_PAGES 3U
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#define OPAL_NVME_QUEUE_BYTES (OPAL_NVME_QUEUE_PAGES * OPAL_NVME_PAGE_SIZE)
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#define OPAL_NVME_SCRATCH_MIN_BYTES (OPAL_NVME_SCRATCH_PAGES * OPAL_NVME_PAGE_SIZE)
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typedef struct {
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UINT32 HostSessionId;
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UINT32 TperSessionId;
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UINT16 ComIdExtension;
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UINT16 OpalBaseComId;
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struct opal_nvme *Nvme;
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} OPAL_SESSION;
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static TCG_RESULT opal_trusted_send(OPAL_SESSION *Session, UINT8 SecurityProtocol,
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UINT16 SpSpecific, UINTN TransferLength,
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VOID *Buffer, UINTN BufferSize)
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{
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const UINTN TransferLength512 = (TransferLength + 511) & ~(UINTN)511;
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if (TransferLength512 > BufferSize)
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return TcgResultFailureBufferTooSmall;
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ZeroMem((UINT8 *)Buffer + TransferLength, TransferLength512 - TransferLength);
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if (opal_nvme_security_send(Session->Nvme, SecurityProtocol, SpSpecific,
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Buffer, TransferLength512))
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return TcgResultFailure;
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return TcgResultSuccess;
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}
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static TCG_RESULT opal_trusted_recv(OPAL_SESSION *Session, UINT8 SecurityProtocol,
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UINT16 SpSpecific, VOID *Buffer, UINTN BufferSize,
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UINT32 EstimateTimeCost)
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{
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UINTN TransferLength512 = BufferSize & ~(UINTN)511;
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UINT32 Tries;
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UINT32 Length;
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UINT32 OutstandingData;
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TCG_COM_PACKET *ComPacket;
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if (TransferLength512 < sizeof(TCG_COM_PACKET))
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return TcgResultFailureBufferTooSmall;
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Tries = (EstimateTimeCost > 10) ? (EstimateTimeCost * 500) : 5000;
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while (Tries-- > 0) {
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size_t TransferSize = 0;
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ZeroMem(Buffer, BufferSize);
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if (opal_nvme_security_recv(Session->Nvme, SecurityProtocol, SpSpecific,
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Buffer, TransferLength512, &TransferSize))
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return TcgResultFailure;
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if (SecurityProtocol != TCG_OPAL_SECURITY_PROTOCOL_1)
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return TcgResultSuccess;
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ComPacket = (TCG_COM_PACKET *)Buffer;
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Length = SwapBytes32(ComPacket->LengthBE);
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OutstandingData = SwapBytes32(ComPacket->OutstandingDataBE);
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if ((Length != 0) && (OutstandingData == 0))
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return TcgResultSuccess;
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udelay(2000);
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}
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return TcgResultFailure;
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}
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static TCG_RESULT opal_perform_method(OPAL_SESSION *Session, UINT32 SendSize, VOID *Buffer,
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UINT32 BufferSize, TCG_PARSE_STRUCT *ParseStruct,
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UINT8 *MethodStatus, UINT32 EstimateTimeCost)
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{
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NULL_CHECK(Session);
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NULL_CHECK(MethodStatus);
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ERROR_CHECK(opal_trusted_send(Session, TCG_OPAL_SECURITY_PROTOCOL_1,
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Session->OpalBaseComId, SendSize, Buffer, BufferSize));
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ERROR_CHECK(opal_trusted_recv(Session, TCG_OPAL_SECURITY_PROTOCOL_1,
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Session->OpalBaseComId, Buffer, BufferSize,
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EstimateTimeCost));
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ERROR_CHECK(TcgInitTcgParseStruct(ParseStruct, Buffer, BufferSize));
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ERROR_CHECK(TcgCheckComIds(ParseStruct, Session->OpalBaseComId,
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Session->ComIdExtension));
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ERROR_CHECK(TcgGetMethodStatus(ParseStruct, MethodStatus));
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return TcgResultSuccess;
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}
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static TCG_RESULT opal_start_session(OPAL_SESSION *Session, TCG_UID SpId, BOOLEAN Write,
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UINT32 HostChallengeLength, const VOID *HostChallenge,
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TCG_UID HostSigningAuthority, VOID *Buffer,
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UINT32 BufferSize, UINT8 *MethodStatus)
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{
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TCG_CREATE_STRUCT CreateStruct;
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TCG_PARSE_STRUCT ParseStruct;
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UINT32 Size;
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UINT16 ComIdExtension = 0;
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UINT32 HostSessionId = 1;
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TCG_RESULT Ret = TcgResultSuccess;
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if (!Session || !MethodStatus || !Buffer)
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return TcgResultFailureNullPointer;
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if (BufferSize < 512)
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return TcgResultFailureBufferTooSmall;
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*MethodStatus = 0;
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Session->ComIdExtension = ComIdExtension;
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Session->HostSessionId = HostSessionId;
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Ret = TcgInitTcgCreateStruct(&CreateStruct, Buffer, BufferSize);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgCreateStartSession(&CreateStruct, &Size, Session->OpalBaseComId,
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ComIdExtension, HostSessionId, SpId, Write,
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HostChallengeLength, HostChallenge, HostSigningAuthority);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = opal_perform_method(Session, Size, Buffer, BufferSize, &ParseStruct, MethodStatus,
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0);
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if (Ret != TcgResultSuccess)
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goto out;
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if (*MethodStatus != TCG_METHOD_STATUS_CODE_SUCCESS)
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goto out;
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if (TcgParseSyncSession(&ParseStruct, Session->OpalBaseComId, ComIdExtension,
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HostSessionId, &Session->TperSessionId) != TcgResultSuccess) {
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Ret = TcgResultFailure;
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goto out;
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}
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out:
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opal_explicit_bzero(Buffer, BufferSize);
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return Ret;
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}
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static TCG_RESULT opal_end_session(OPAL_SESSION *Session, VOID *Buffer, UINT32 BufferSize)
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{
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TCG_CREATE_STRUCT CreateStruct;
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UINT32 Size;
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TCG_PARSE_STRUCT ParseStruct;
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TCG_RESULT Ret = TcgResultSuccess;
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if (!Session || !Buffer)
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return TcgResultFailureNullPointer;
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if (BufferSize < 512)
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return TcgResultFailureBufferTooSmall;
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Ret = TcgInitTcgCreateStruct(&CreateStruct, Buffer, BufferSize);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgCreateEndSession(&CreateStruct, &Size, Session->OpalBaseComId,
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Session->ComIdExtension, Session->HostSessionId,
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Session->TperSessionId);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = opal_trusted_send(Session, TCG_OPAL_SECURITY_PROTOCOL_1, Session->OpalBaseComId,
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Size, Buffer, BufferSize);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = opal_trusted_recv(Session, TCG_OPAL_SECURITY_PROTOCOL_1, Session->OpalBaseComId,
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Buffer, BufferSize, 0);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgInitTcgParseStruct(&ParseStruct, Buffer, BufferSize);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgCheckComIds(&ParseStruct, Session->OpalBaseComId, Session->ComIdExtension);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgGetNextEndOfSession(&ParseStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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out:
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opal_explicit_bzero(Buffer, BufferSize);
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return Ret;
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}
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static TCG_RESULT opal_update_global_locking_range(OPAL_SESSION *Session, BOOLEAN ReadLocked,
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BOOLEAN WriteLocked, VOID *Buffer,
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UINT32 BufferSize, UINT8 *MethodStatus)
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{
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TCG_CREATE_STRUCT CreateStruct;
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TCG_PARSE_STRUCT ParseStruct;
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UINT32 Size;
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TCG_RESULT Ret = TcgResultSuccess;
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if (!Session || !MethodStatus || !Buffer)
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return TcgResultFailureNullPointer;
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if (BufferSize < 512)
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return TcgResultFailureBufferTooSmall;
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Ret = TcgInitTcgCreateStruct(&CreateStruct, Buffer, BufferSize);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgStartComPacket(&CreateStruct, Session->OpalBaseComId,
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Session->ComIdExtension);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgStartPacket(&CreateStruct, Session->TperSessionId,
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Session->HostSessionId, 0, 0, 0);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgStartSubPacket(&CreateStruct, 0);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgStartMethodCall(&CreateStruct,
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OPAL_LOCKING_SP_LOCKING_GLOBALRANGE,
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TCG_UID_METHOD_SET);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgStartParameters(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddStartName(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddUINT8(&CreateStruct, 0x01);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddStartList(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddStartName(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddUINT8(&CreateStruct, 0x07);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddBOOLEAN(&CreateStruct, ReadLocked);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddEndName(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddStartName(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddUINT8(&CreateStruct, 0x08);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddBOOLEAN(&CreateStruct, WriteLocked);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddEndName(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddEndList(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgAddEndName(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgEndParameters(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgEndMethodCall(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgEndSubPacket(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgEndPacket(&CreateStruct);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = TcgEndComPacket(&CreateStruct, &Size);
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if (Ret != TcgResultSuccess)
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goto out;
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Ret = opal_perform_method(Session, Size, Buffer, BufferSize, &ParseStruct,
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MethodStatus, 0);
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if (Ret != TcgResultSuccess)
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goto out;
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if (*MethodStatus != TCG_METHOD_STATUS_CODE_SUCCESS) {
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Ret = TcgResultSuccess;
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goto out;
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}
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out:
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opal_explicit_bzero(Buffer, BufferSize);
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return Ret;
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}
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static TCG_RESULT opal_util_update_global_locking_range(OPAL_SESSION *Session,
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const VOID *Password,
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UINT32 PasswordLength,
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BOOLEAN ReadLocked,
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BOOLEAN WriteLocked,
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VOID *Buffer,
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UINT32 BufferSize)
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{
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UINT8 MethodStatus = 0;
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TCG_RESULT Ret;
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NULL_CHECK(Session);
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NULL_CHECK(Password);
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NULL_CHECK(Buffer);
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/* Try admin1 authority. */
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Ret = opal_start_session(Session, OPAL_UID_LOCKING_SP, TRUE, PasswordLength, Password,
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OPAL_LOCKING_SP_ADMIN1_AUTHORITY, Buffer, BufferSize,
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&MethodStatus);
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if ((Ret == TcgResultSuccess) && (MethodStatus == TCG_METHOD_STATUS_CODE_SUCCESS)) {
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Ret = opal_update_global_locking_range(Session, ReadLocked, WriteLocked,
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Buffer, BufferSize, &MethodStatus);
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opal_end_session(Session, Buffer, BufferSize);
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if ((Ret == TcgResultSuccess) &&
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(MethodStatus == TCG_METHOD_STATUS_CODE_SUCCESS))
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return TcgResultSuccess;
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}
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/* Try user1 authority. */
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Ret = opal_start_session(Session, OPAL_UID_LOCKING_SP, TRUE, PasswordLength, Password,
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OPAL_LOCKING_SP_USER1_AUTHORITY, Buffer, BufferSize,
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&MethodStatus);
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if (Ret != TcgResultSuccess)
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goto done;
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if (MethodStatus != TCG_METHOD_STATUS_CODE_SUCCESS)
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goto done;
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Ret = opal_update_global_locking_range(Session, ReadLocked, WriteLocked, Buffer,
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BufferSize, &MethodStatus);
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opal_end_session(Session, Buffer, BufferSize);
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done:
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if ((Ret == TcgResultSuccess) && (MethodStatus != TCG_METHOD_STATUS_CODE_SUCCESS)) {
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if (MethodStatus == TCG_METHOD_STATUS_CODE_AUTHORITY_LOCKED_OUT)
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Ret = TcgResultFailureInvalidType;
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else
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Ret = TcgResultFailure;
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}
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return Ret;
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}
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u32 opal_nvme_opal_unlock(pci_devfn_t dev, u16 base_comid, const u8 *password,
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u8 password_len, void *scratch, size_t scratch_size)
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{
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struct opal_nvme nvme;
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OPAL_SESSION Session;
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TCG_RESULT Ret;
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u8 *io_buf;
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u32 rc = 0;
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u8 *queue_base;
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if (!password || !password_len) {
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printk(BIOS_ERR, "OPAL: missing password\n");
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return 4;
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}
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if (!scratch || scratch_size < OPAL_NVME_SCRATCH_MIN_BYTES) {
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printk(BIOS_ERR, "OPAL: invalid scratch buffer\n");
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return 2;
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}
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|
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if (smm_points_to_smram(scratch, scratch_size)) {
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printk(BIOS_ERR, "OPAL: scratch overlaps SMRAM\n");
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return 2;
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}
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queue_base = (u8 *)ALIGN_UP((uintptr_t)scratch, OPAL_NVME_PAGE_SIZE);
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if ((uintptr_t)queue_base + OPAL_NVME_SCRATCH_MIN_BYTES >
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(uintptr_t)scratch + scratch_size) {
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printk(BIOS_ERR, "OPAL: scratch alignment overflow\n");
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rc = 2;
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goto out_early;
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}
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|
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/* Use a 4KiB IO buffer after the queue pages. */
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io_buf = queue_base + OPAL_NVME_QUEUE_BYTES;
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|
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if (opal_nvme_init(&nvme, dev, scratch, scratch_size)) {
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/* Fail closed and ensure stale DMA-visible buffers are cleared. */
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opal_explicit_bzero(queue_base, OPAL_NVME_SCRATCH_MIN_BYTES);
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return 1;
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}
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|
||||
memset(&Session, 0, sizeof(Session));
|
||||
Session.Nvme = &nvme;
|
||||
Session.OpalBaseComId = base_comid;
|
||||
Session.ComIdExtension = 0;
|
||||
|
||||
/* Best-effort unlock. */
|
||||
Ret = opal_util_update_global_locking_range(&Session, password, password_len, FALSE,
|
||||
FALSE, io_buf, OPAL_NVME_PAGE_SIZE);
|
||||
|
||||
opal_explicit_bzero(io_buf, OPAL_NVME_PAGE_SIZE);
|
||||
|
||||
/* Clear DMA-visible admin queues as well. */
|
||||
opal_explicit_bzero(queue_base, OPAL_NVME_QUEUE_BYTES);
|
||||
opal_nvme_deinit(&nvme);
|
||||
|
||||
rc = (Ret == TcgResultSuccess) ? 0 : 3;
|
||||
return rc;
|
||||
|
||||
out_early:
|
||||
{
|
||||
const uintptr_t end = (uintptr_t)scratch + scratch_size;
|
||||
const uintptr_t start = (uintptr_t)queue_base;
|
||||
|
||||
if (end > start) {
|
||||
size_t safe = end - start;
|
||||
|
||||
if (safe > OPAL_NVME_SCRATCH_MIN_BYTES)
|
||||
safe = OPAL_NVME_SCRATCH_MIN_BYTES;
|
||||
opal_explicit_bzero(queue_base, safe);
|
||||
}
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
13
src/vendorcode/tcg/opal/opal_unlock.h
Normal file
13
src/vendorcode/tcg/opal/opal_unlock.h
Normal file
|
|
@ -0,0 +1,13 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0-only */
|
||||
|
||||
#ifndef VENDORCODE_TCG_OPAL_UNLOCK_H
|
||||
#define VENDORCODE_TCG_OPAL_UNLOCK_H
|
||||
|
||||
#include <device/pci_type.h>
|
||||
#include <stddef.h>
|
||||
#include <types.h>
|
||||
|
||||
u32 opal_nvme_opal_unlock(pci_devfn_t dev, u16 base_comid, const u8 *password,
|
||||
u8 password_len, void *scratch, size_t scratch_size);
|
||||
|
||||
#endif
|
||||
Loading…
Add table
Add a link
Reference in a new issue