On 6/24/20 3:34 PM, Sami Mujawar wrote:
The PlatformPeim() in the PlatformPeiLib is invoked
by the PrePiMain() and provides the platform an
opportunity to setup the plaform specific HOBs.
This PlatfromPeiLib initialises the Kvmtool platform
HOBs like the Fdt, 16550BaseAddress, etc.
Signed-off-by: Sami Mujawar <sami.muja...@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheu...@arm.com>
---
ArmVirtPkg/Library/KvmtoolPlatformPeiLib/KvmtoolPlatformPeiLib.c | 78
++++++++++++++++++++
ArmVirtPkg/Library/KvmtoolPlatformPeiLib/KvmtoolPlatformPeiLib.inf | 48
++++++++++++
2 files changed, 126 insertions(+)
diff --git a/ArmVirtPkg/Library/KvmtoolPlatformPeiLib/KvmtoolPlatformPeiLib.c
b/ArmVirtPkg/Library/KvmtoolPlatformPeiLib/KvmtoolPlatformPeiLib.c
new file mode 100644
index
0000000000000000000000000000000000000000..a97b31537fbc8071eed030f912ade60de3945356
--- /dev/null
+++ b/ArmVirtPkg/Library/KvmtoolPlatformPeiLib/KvmtoolPlatformPeiLib.c
@@ -0,0 +1,78 @@
+/** @file
+*
+* Copyright (c) 2020, ARM Limited. All rights reserved.
+*
+* SPDX-License-Identifier: BSD-2-Clause-Patent
+*
+**/
+
+#include <PiPei.h>
+
+#include <Guid/Early16550UartBaseAddress.h>
+#include <Guid/FdtHob.h>
+
+#include <Library/MemoryAllocationLib.h>
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <Library/PcdLib.h>
+#include <Library/PeiServicesLib.h>
+#include <libfdt.h>
+
+/** Initialise Platform HOBs
+
+ @retval EFI_SUCCESS Success.
+ @retval EFI_INVALID_PARAMETER A parameter is invalid.
+ @retval EFI_OUT_OF_RESOURCES Out of resources.
+**/
+EFI_STATUS
+EFIAPI
+PlatformPeim (
+ VOID
+ )
+{
+ VOID *Base;
+ VOID *NewBase;
+ UINTN FdtSize;
+ UINTN FdtPages;
+ UINT64 *FdtHobData;
+ UINT64 *UartHobData;
+
+ Base = (VOID*)(UINTN)PcdGet64 (PcdDeviceTreeInitialBaseAddress);
+ if ((Base == NULL) || (fdt_check_header (Base) != 0)) {
+ ASSERT (0);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ FdtSize = fdt_totalsize (Base) + PcdGet32 (PcdDeviceTreeAllocationPadding);
+ FdtPages = EFI_SIZE_TO_PAGES (FdtSize);
+ NewBase = AllocatePages (FdtPages);
+ if (NewBase == NULL) {
+ ASSERT (0);
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ fdt_open_into (Base, NewBase, EFI_PAGES_TO_SIZE (FdtPages));
+
+ FdtHobData = BuildGuidHob (&gFdtHobGuid, sizeof (*FdtHobData));
+ if (FdtHobData == NULL) {
+ ASSERT (0);
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ *FdtHobData = (UINTN)NewBase;
+
+ UartHobData = BuildGuidHob (
+ &gEarly16550UartBaseAddressGuid,
+ sizeof (*UartHobData)
+ );
+ if (UartHobData == NULL) {
+ ASSERT (0);
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ *UartHobData = PcdGet64 (PcdSerialRegisterBase);
+
+ BuildFvHob (PcdGet64 (PcdFvBaseAddress), PcdGet32 (PcdFvSize));
+
+ return EFI_SUCCESS;
+}
diff --git a/ArmVirtPkg/Library/KvmtoolPlatformPeiLib/KvmtoolPlatformPeiLib.inf
b/ArmVirtPkg/Library/KvmtoolPlatformPeiLib/KvmtoolPlatformPeiLib.inf
new file mode 100644
index
0000000000000000000000000000000000000000..9f44b8885d3c131de1d41ac6947bd9218cfdf3e7
--- /dev/null
+++ b/ArmVirtPkg/Library/KvmtoolPlatformPeiLib/KvmtoolPlatformPeiLib.inf
@@ -0,0 +1,48 @@
+#/** @file
+#
+# Copyright (c) 2020, ARM Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x0001001B
+ BASE_NAME = PlatformPeiLib
+ FILE_GUID = 21073FB3-BA6F-43EB-83F0-4A840C648165
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = KvmtoolPlatformPeiLib
+
+[Sources]
+ KvmtoolPlatformPeiLib.c
+
+[Packages]
+ ArmPkg/ArmPkg.dec
+ ArmVirtPkg/ArmVirtPkg.dec
+ EmbeddedPkg/EmbeddedPkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ DebugLib
+ HobLib
+ FdtLib
+ PcdLib
+ PeiServicesLib
+
+[FixedPcd]
+ gArmTokenSpaceGuid.PcdFvSize
+ gArmVirtTokenSpaceGuid.PcdDeviceTreeAllocationPadding
+
+[Pcd]
+ gArmTokenSpaceGuid.PcdFvBaseAddress
+ gArmVirtTokenSpaceGuid.PcdDeviceTreeInitialBaseAddress
+ gEfiMdeModulePkgTokenSpaceGuid.PcdSerialRegisterBase
+
+[Guids]
+ gFdtHobGuid
+ gEarly16550UartBaseAddressGuid
+
+[Depex]
+ gEfiPeiMemoryDiscoveredPpiGuid
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