diff options
Diffstat (limited to 'ArmVirtPkg/Library')
| -rw-r--r-- | ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c | 101 | ||||
| -rw-r--r-- | ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.inf | 19 |
2 files changed, 106 insertions, 14 deletions
diff --git a/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c b/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c index 0a1469550d..8b5b3dd5dc 100644 --- a/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c +++ b/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.c @@ -1,7 +1,7 @@ /** @file
*
* Copyright (c) 2011-2014, ARM Limited. All rights reserved.
-* Copyright (c) 2014, Linaro Limited. All rights reserved.
+* Copyright (c) 2014-2020, Linaro Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-2-Clause-Patent
*
@@ -13,11 +13,24 @@ #include <Library/DebugLib.h>
#include <Library/HobLib.h>
#include <Library/PcdLib.h>
+#include <Library/PeiServicesLib.h>
#include <libfdt.h>
#include <Guid/EarlyPL011BaseAddress.h>
#include <Guid/FdtHob.h>
+STATIC CONST EFI_PEI_PPI_DESCRIPTOR mTpm2DiscoveredPpi = {
+ EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
+ &gOvmfTpmDiscoveredPpiGuid,
+ NULL
+};
+
+STATIC CONST EFI_PEI_PPI_DESCRIPTOR mTpm2InitializationDonePpi = {
+ EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
+ &gPeiTpmInitializationDonePpiGuid,
+ NULL
+};
+
EFI_STATUS
EFIAPI
PlatformPeim (
@@ -31,14 +44,18 @@ PlatformPeim ( UINT64 *FdtHobData;
UINT64 *UartHobData;
INT32 Node, Prev;
+ INT32 Parent, Depth;
CONST CHAR8 *Compatible;
CONST CHAR8 *CompItem;
CONST CHAR8 *NodeStatus;
INT32 Len;
+ INT32 RangesLen;
INT32 StatusLen;
CONST UINT64 *RegProp;
+ CONST UINT32 *RangesProp;
UINT64 UartBase;
-
+ UINT64 TpmBase;
+ EFI_STATUS Status;
Base = (VOID*)(UINTN)PcdGet64 (PcdDeviceTreeInitialBaseAddress);
ASSERT (Base != NULL);
@@ -58,18 +75,18 @@ PlatformPeim ( ASSERT (UartHobData != NULL);
*UartHobData = 0;
- //
- // Look for a UART node
- //
- for (Prev = 0;; Prev = Node) {
- Node = fdt_next_node (Base, Prev, NULL);
+ TpmBase = 0;
+
+ for (Prev = Depth = 0;; Prev = Node) {
+ Node = fdt_next_node (Base, Prev, &Depth);
if (Node < 0) {
break;
}
- //
- // Check for UART node
- //
+ if (Depth == 1) {
+ Parent = Node;
+ }
+
Compatible = fdt_getprop (Base, Node, "compatible", &Len);
//
@@ -93,10 +110,74 @@ PlatformPeim ( *UartHobData = UartBase;
break;
+ } else if (FeaturePcdGet (PcdTpm2SupportEnabled) &&
+ AsciiStrCmp (CompItem, "tcg,tpm-tis-mmio") == 0) {
+
+ RegProp = fdt_getprop (Base, Node, "reg", &Len);
+ ASSERT (Len == 8 || Len == 16);
+ if (Len == 8) {
+ TpmBase = fdt32_to_cpu (RegProp[0]);
+ } else if (Len == 16) {
+ TpmBase = fdt64_to_cpu (ReadUnaligned64 ((UINT64 *)RegProp));
+ }
+
+ if (Depth > 1) {
+ //
+ // QEMU/mach-virt may put the TPM on the platform bus, in which case
+ // we have to take its 'ranges' property into account to translate the
+ // MMIO address. This consists of a <child base, parent base, size>
+ // tuple, where the child base and the size use the same number of
+ // cells as the 'reg' property above, and the parent base uses 2 cells
+ //
+ RangesProp = fdt_getprop (Base, Parent, "ranges", &RangesLen);
+ ASSERT (RangesProp != NULL);
+
+ //
+ // a plain 'ranges' attribute without a value implies a 1:1 mapping
+ //
+ if (RangesLen != 0) {
+ //
+ // assume a single translated range with 2 cells for the parent base
+ //
+ if (RangesLen != Len + 2 * sizeof (UINT32)) {
+ DEBUG ((DEBUG_WARN,
+ "%a: 'ranges' property has unexpected size %d\n",
+ __FUNCTION__, RangesLen));
+ break;
+ }
+
+ if (Len == 8) {
+ TpmBase -= fdt32_to_cpu (RangesProp[0]);
+ } else {
+ TpmBase -= fdt64_to_cpu (ReadUnaligned64 ((UINT64 *)RangesProp));
+ }
+
+ //
+ // advance RangesProp to the parent bus address
+ //
+ RangesProp = (UINT32 *)((UINT8 *)RangesProp + Len / 2);
+ TpmBase += fdt64_to_cpu (ReadUnaligned64 ((UINT64 *)RangesProp));
+ }
+ }
+ break;
}
}
}
+ if (FeaturePcdGet (PcdTpm2SupportEnabled)) {
+ if (TpmBase != 0) {
+ DEBUG ((DEBUG_INFO, "%a: TPM @ 0x%lx\n", __FUNCTION__, TpmBase));
+
+ Status = (EFI_STATUS)PcdSet64S (PcdTpmBaseAddress, TpmBase);
+ ASSERT_EFI_ERROR (Status);
+
+ Status = PeiServicesInstallPpi (&mTpm2DiscoveredPpi);
+ } else {
+ Status = PeiServicesInstallPpi (&mTpm2InitializationDonePpi);
+ }
+ ASSERT_EFI_ERROR (Status);
+ }
+
BuildFvHob (PcdGet64 (PcdFvBaseAddress), PcdGet32 (PcdFvSize));
return EFI_SUCCESS;
diff --git a/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.inf b/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.inf index 5428040f12..3f97ef0805 100644 --- a/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.inf +++ b/ArmVirtPkg/Library/PlatformPeiLib/PlatformPeiLib.inf @@ -1,7 +1,7 @@ #/** @file
#
# Copyright (c) 2011-2015, ARM Limited. All rights reserved.
-# Copyright (c) 2014, Linaro Limited. All rights reserved.
+# Copyright (c) 2014-2020, Linaro Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
@@ -11,7 +11,7 @@ INF_VERSION = 0x00010005
BASE_NAME = PlatformPeiLib
FILE_GUID = 59C11815-F8DA-4F49-B4FB-EC1E41ED1F06
- MODULE_TYPE = SEC
+ MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = PlatformPeiLib
@@ -21,15 +21,21 @@ [Packages]
ArmPkg/ArmPkg.dec
ArmVirtPkg/ArmVirtPkg.dec
- MdePkg/MdePkg.dec
- MdeModulePkg/MdeModulePkg.dec
EmbeddedPkg/EmbeddedPkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ MdePkg/MdePkg.dec
+ OvmfPkg/OvmfPkg.dec
+ SecurityPkg/SecurityPkg.dec
+
+[FeaturePcd]
+ gArmVirtTokenSpaceGuid.PcdTpm2SupportEnabled
[LibraryClasses]
DebugLib
HobLib
FdtLib
PcdLib
+ PeiServicesLib
[FixedPcd]
gArmTokenSpaceGuid.PcdFvSize
@@ -38,6 +44,11 @@ [Pcd]
gArmTokenSpaceGuid.PcdFvBaseAddress
gArmVirtTokenSpaceGuid.PcdDeviceTreeInitialBaseAddress
+ gEfiSecurityPkgTokenSpaceGuid.PcdTpmBaseAddress ## SOMETIMES_PRODUCES
+
+[Ppis]
+ gOvmfTpmDiscoveredPpiGuid ## SOMETIMES_PRODUCES
+ gPeiTpmInitializationDonePpiGuid ## SOMETIMES_PRODUCES
[Guids]
gEarlyPL011BaseAddressGuid
|