Some DXE drivers such as MMC's DMA can only work with 32-bit addressing.
So, EfiBootServicesData need to set within 32-bit range only.
This is achieved by setting all EfiConventionalMemory to
EfiBootServicesData before any memory allocations in the early stage of
DXE.
Cc: Sunil V L <suni...@ventanamicro.com>
Signed-off-by: John Chew <yuinyee.c...@starfivetech.com>
---
Silicon/StarFive/JH7110Pkg/Driver/BootServicesDxe/BootServicesDxe.c | 108
++++++++++++++++++++
Silicon/StarFive/JH7110Pkg/Driver/BootServicesDxe/BootServicesDxe.inf | 34
++++++
2 files changed, 142 insertions(+)
diff --git
a/Silicon/StarFive/JH7110Pkg/Driver/BootServicesDxe/BootServicesDxe.c
b/Silicon/StarFive/JH7110Pkg/Driver/BootServicesDxe/BootServicesDxe.c
new file mode 100644
index 000000000000..a26a77661d4e
--- /dev/null
+++ b/Silicon/StarFive/JH7110Pkg/Driver/BootServicesDxe/BootServicesDxe.c
@@ -0,0 +1,108 @@
+/** @file
+ *
+ * Copyright (c) 2023, StarFive Technology Co., Ltd. All rights reserved.<BR>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause-Patent
+ *
+ **/
+
+#include <Uefi.h>
+#include <Library/UefiLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/DebugLib.h>
+#include <Library/MemoryAllocationLib.h>
+
+EFI_STATUS
+EFIAPI
+BootServicesInitialize (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ UINTN MemoryMapSize;
+ EFI_MEMORY_DESCRIPTOR *MemoryMap, *Desc;
+ UINTN MapKey;
+ UINTN DescriptorSize;
+ UINT32 DescriptorVersion;
+ EFI_PHYSICAL_ADDRESS Addr;
+ UINTN Idx;
+ UINTN Pages;
+
+ MemoryMap = NULL;
+ MemoryMapSize = 0;
+ Pages = 0;
+
+ Status = gBS->GetMemoryMap (
+ &MemoryMapSize,
+ MemoryMap,
+ &MapKey,
+ &DescriptorSize,
+ &DescriptorVersion
+ );
+
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ Pages = EFI_SIZE_TO_PAGES (MemoryMapSize) + 1;
+ MemoryMap = AllocatePages (Pages);
+
+ //
+ // Get System MemoryMap
+ //
+ Status = gBS->GetMemoryMap (
+ &MemoryMapSize,
+ MemoryMap,
+ &MapKey,
+ &DescriptorSize,
+ &DescriptorVersion
+ );
+ }
+
+ if (EFI_ERROR (Status) || (MemoryMap == NULL)) {
+ DEBUG ((DEBUG_ERROR, "%a: Failed to get memory map\n", __func__));
+ if (MemoryMap) {
+ FreePages ((VOID *)MemoryMap, Pages);
+ }
+
+ return EFI_SUCCESS;
+ }
+
+ Desc = MemoryMap;
+
+ //
+ // Change 64-bit EfiConventionalMemory with EfiBootServicesData
+ // So that DXE driver only allocate EfiBootServicesData in 32-bit addresses
+ //
+ for (Idx = 0; Idx < (MemoryMapSize / DescriptorSize); Idx++) {
+ if ((Desc->Type == EfiConventionalMemory) &&
+ ((Desc->PhysicalStart > MAX_UINT32) || ((Desc->PhysicalStart +
Desc->NumberOfPages * EFI_PAGE_SIZE) > MAX_UINT32)))
+ {
+ if (Desc->PhysicalStart > MAX_UINT32) {
+ Addr = Desc->PhysicalStart;
+ Status = gBS->AllocatePages (
+ AllocateAddress,
+ EfiBootServicesData,
+ Desc->NumberOfPages,
+ &Addr
+ );
+ } else {
+ Addr = 0x100000000ULL;
+ Status = gBS->AllocatePages (
+ AllocateAddress,
+ EfiBootServicesData,
+ Desc->NumberOfPages - EFI_SIZE_TO_PAGES
(0x100000000 - Desc->PhysicalStart),
+ &Addr
+ );
+ }
+
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: Failed to allocate boot service data at
%llX\n", __func__, Addr));
+ }
+ }
+
+ Desc = (EFI_MEMORY_DESCRIPTOR *)((UINT64)Desc + DescriptorSize);
+ }
+
+ FreePages ((VOID *)MemoryMap, Pages);
+
+ return EFI_SUCCESS;
+}
diff --git
a/Silicon/StarFive/JH7110Pkg/Driver/BootServicesDxe/BootServicesDxe.inf
b/Silicon/StarFive/JH7110Pkg/Driver/BootServicesDxe/BootServicesDxe.inf
new file mode 100644
index 000000000000..33a777ae5a24
--- /dev/null
+++ b/Silicon/StarFive/JH7110Pkg/Driver/BootServicesDxe/BootServicesDxe.inf
@@ -0,0 +1,34 @@
+## @file
+# DXE Boot Service driver for StarFive JH7110 SoC
+#
+# Copyright (c) 2023, StarFive Technology Co., Ltd. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010019
+ BASE_NAME = BootServicesDxe
+ FILE_GUID = E7B2A7CF-4A9B-4F63-9B9E-12B34C5D6E78
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+
+ ENTRY_POINT = BootServicesInitialize
+
+[Sources]
+ BootServicesDxe.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ UefiDriverEntryPoint
+ DebugLib
+ MemoryAllocationLib
+
+[Guids]
+ gEfiEventReadyToBootGuid
+
+[Depex]
+ TRUE
--
2.34.1
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