Platfrom PEI module for LoongArch platfrom initialization.
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Chao Li <lichao@loongson.cn>
Co-authored-by: Xianglai Li <lixianglai@loongson.cn>
Co-authored-by: Bibo Mao <maobibo@loongson.cn>
---
OvmfPkg/LoongArchVirt/PlatformPei/Fv.c | 39 ++
OvmfPkg/LoongArchVirt/PlatformPei/MemDetect.c | 201 +++++++++
OvmfPkg/LoongArchVirt/PlatformPei/Platform.c | 393 ++++++++++++++++++
OvmfPkg/LoongArchVirt/PlatformPei/Platform.h | 146 +++++++
.../LoongArchVirt/PlatformPei/PlatformPei.inf | 72 ++++
5 files changed, 851 insertions(+)
create mode 100644 OvmfPkg/LoongArchVirt/PlatformPei/Fv.c
create mode 100644 OvmfPkg/LoongArchVirt/PlatformPei/MemDetect.c
create mode 100644 OvmfPkg/LoongArchVirt/PlatformPei/Platform.c
create mode 100644 OvmfPkg/LoongArchVirt/PlatformPei/Platform.h
create mode 100644 OvmfPkg/LoongArchVirt/PlatformPei/PlatformPei.inf
diff --git a/OvmfPkg/LoongArchVirt/PlatformPei/Fv.c b/OvmfPkg/LoongArchVirt/PlatformPei/Fv.c
new file mode 100644
index 0000000000..d46326f135
--- /dev/null
+++ b/OvmfPkg/LoongArchVirt/PlatformPei/Fv.c
@@ -0,0 +1,39 @@
+/** @file
+ Build FV related hobs for platform.
+
+ Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <Library/PeiServicesLib.h>
+#include <Library/PcdLib.h>
+#include "Platform.h"
+
+/**
+ Publish PEI & DXE (Decompressed) Memory based FVs to let PEI
+ and DXE know about them.
+
+ @retval EFI_SUCCESS Platform PEI FVs were initialized successfully.
+**/
+EFI_STATUS
+PeiFvInitialization (
+ VOID
+ )
+{
+ DEBUG ((DEBUG_INFO, "Platform PEI Firmware Volume Initialization\n"));
+
+ //
+ // Create a memory allocation HOB for the PEI FV.
+ //
+ BuildMemoryAllocationHob (
+ FixedPcdGet64 (PcdOvmfSecPeiTempRamBase),
+ FixedPcdGet32 (PcdOvmfSecPeiTempRamSize),
+ EfiBootServicesData
+ );
+
+ return EFI_SUCCESS;
+}
diff --git a/OvmfPkg/LoongArchVirt/PlatformPei/MemDetect.c b/OvmfPkg/LoongArchVirt/PlatformPei/MemDetect.c
new file mode 100644
index 0000000000..9c90413524
--- /dev/null
+++ b/OvmfPkg/LoongArchVirt/PlatformPei/MemDetect.c
@@ -0,0 +1,201 @@
+/** @file
+ Memory Detection for Virtual Machines.
+
+ Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+//
+// The package level header files this module uses
+//
+#include <PiPei.h>
+
+//
+// The Library classes this module consumes
+//
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <Library/IoLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PcdLib.h>
+#include <Library/PeimEntryPoint.h>
+#include <Library/QemuFwCfgLib.h>
+#include <Library/ResourcePublicationLib.h>
+#include <Register/LoongArch64/Csr.h>
+#include "Platform.h"
+
+#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS (128)
+#define LOONGARCH_FW_RAM_TOP BASE_256MB
+
+/**
+ Publish PEI core memory
+
+ @return EFI_SUCCESS The PEIM initialized successfully.
+**/
+EFI_STATUS
+PublishPeiMemory (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ UINT64 Base;
+ UINT64 Size;
+ UINT64 RamTop;
+
+ //
+ // Determine the range of memory to use during PEI
+ //
+ Base = FixedPcdGet64 (PcdOvmfSecPeiTempRamBase) + FixedPcdGet32 (PcdOvmfSecPeiTempRamSize);
+ RamTop = LOONGARCH_FW_RAM_TOP;
+ Size = RamTop - Base;
+
+ //
+ // Publish this memory to the PEI Core
+ //
+ Status = PublishSystemMemory (Base, Size);
+ ASSERT_EFI_ERROR (Status);
+
+ DEBUG ((DEBUG_INFO, "Publish Memory Initialize done.\n"));
+ return Status;
+}
+
+/**
+ Peform Memory Detection
+ Publish system RAM and reserve memory regions
+**/
+VOID
+InitializeRamRegions (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ FIRMWARE_CONFIG_ITEM FwCfgItem;
+ UINTN FwCfgSize;
+ MEMMAP_ENTRY MemoryMapEntry;
+ MEMMAP_ENTRY *StartEntry;
+ MEMMAP_ENTRY *pEntry;
+ UINTN Processed;
+
+ Status = QemuFwCfgFindFile ("etc/memmap", &FwCfgItem, &FwCfgSize);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a %d read etc/memmap error Status %d \n", __func__, __LINE__, Status));
+ return;
+ }
+
+ if (FwCfgSize % sizeof MemoryMapEntry != 0) {
+ DEBUG ((DEBUG_ERROR, "no MemoryMapEntry FwCfgSize:%d\n", FwCfgSize));
+ return;
+ }
+
+ QemuFwCfgSelectItem (FwCfgItem);
+ StartEntry = AllocatePages (EFI_SIZE_TO_PAGES (FwCfgSize));
+ QemuFwCfgReadBytes (FwCfgSize, StartEntry);
+ for (Processed = 0; Processed < (FwCfgSize / sizeof MemoryMapEntry); Processed++) {
+ pEntry = StartEntry + Processed;
+ if (pEntry->Length == 0) {
+ continue;
+ }
+
+ DEBUG ((DEBUG_INFO, "MemmapEntry Base %p length %p type %d\n", pEntry->BaseAddr, pEntry->Length, pEntry->Type));
+ if (pEntry->Type != EfiAcpiAddressRangeMemory) {
+ continue;
+ }
+
+ AddMemoryRangeHob (pEntry->BaseAddr, pEntry->BaseAddr + pEntry->Length);
+ }
+
+ //
+ // When 0 address protection is enabled,
+ // 0-4k memory needs to be preallocated to prevent UEFI applications from allocating use,
+ // such as grub
+ //
+ if (PcdGet8 (PcdNullPointerDetectionPropertyMask) & BIT0) {
+ BuildMemoryAllocationHob (
+ 0,
+ EFI_PAGE_SIZE,
+ EfiBootServicesData
+ );
+ }
+}
+
+/**
+ Gets the Virtual Memory Map of corresponding platforms.
+
+ This Virtual Memory Map is used by initialize the MMU on corresponding
+ platforms.
+
+ @param[out] MemoryTable Array of MEMORY_REGION_DESCRIPTOR
+ describing a Physical-to-Virtual Memory
+ mapping. This array must be ended by a
+ zero-filled entry. The allocated memory
+ will not be freed.
+**/
+VOID
+EFIAPI
+GetMemoryMapPolicy (
+ OUT MEMORY_REGION_DESCRIPTOR **MemoryTable
+ )
+{
+ EFI_STATUS Status;
+ FIRMWARE_CONFIG_ITEM FwCfgItem;
+ UINTN FwCfgSize;
+ MEMMAP_ENTRY MemoryMapEntry;
+ MEMMAP_ENTRY *StartEntry;
+ MEMMAP_ENTRY *pEntry;
+ UINTN Processed;
+ MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable;
+ UINTN Index = 0;
+
+ ASSERT (MemoryTable != NULL);
+
+ VirtualMemoryTable = AllocatePool (
+ sizeof (MEMORY_REGION_DESCRIPTOR) *
+ MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS
+ );
+
+ //
+ // Add the 0x10000000-0x20000000. In the virtual machine, this area use for CPU UART, flash, PIC etc.
+ //
+ VirtualMemoryTable[Index].PhysicalBase = 0x10000000;
+ VirtualMemoryTable[Index].VirtualBase = VirtualMemoryTable[Index].PhysicalBase;
+ VirtualMemoryTable[Index].Length = 0x10000000;
+ VirtualMemoryTable[Index].Attributes = PAGE_VALID | PLV_KERNEL | CACHE_SUC | PAGE_DIRTY | PAGE_GLOBAL;
+ ++Index;
+
+ Status = QemuFwCfgFindFile ("etc/memmap", &FwCfgItem, &FwCfgSize);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a %d read etc/memmap error Status %d \n", __func__, __LINE__, Status));
+ ZeroMem (&VirtualMemoryTable[Index], sizeof (MEMORY_REGION_DESCRIPTOR));
+ *MemoryTable = VirtualMemoryTable;
+ return;
+ }
+
+ if (FwCfgSize % sizeof MemoryMapEntry != 0) {
+ DEBUG ((DEBUG_ERROR, "no MemoryMapEntry FwCfgSize:%d\n", FwCfgSize));
+ }
+
+ QemuFwCfgSelectItem (FwCfgItem);
+ StartEntry = AllocatePages (EFI_SIZE_TO_PAGES (FwCfgSize));
+ QemuFwCfgReadBytes (FwCfgSize, StartEntry);
+ for (Processed = 0; Processed < (FwCfgSize / sizeof MemoryMapEntry); Processed++) {
+ pEntry = StartEntry + Processed;
+ if (pEntry->Length == 0) {
+ continue;
+ }
+
+ DEBUG ((DEBUG_INFO, "MemmapEntry Base %p length %p type %d\n", pEntry->BaseAddr, pEntry->Length, pEntry->Type));
+ VirtualMemoryTable[Index].PhysicalBase = pEntry->BaseAddr;
+ VirtualMemoryTable[Index].VirtualBase = VirtualMemoryTable[Index].PhysicalBase;
+ VirtualMemoryTable[Index].Length = pEntry->Length;
+ VirtualMemoryTable[Index].Attributes = PAGE_VALID | PLV_KERNEL | CACHE_CC | PAGE_DIRTY | PAGE_GLOBAL;
+ ++Index;
+ }
+
+ FreePages (StartEntry, EFI_SIZE_TO_PAGES (FwCfgSize));
+ // End of Table
+ ZeroMem (&VirtualMemoryTable[Index], sizeof (MEMORY_REGION_DESCRIPTOR));
+ *MemoryTable = VirtualMemoryTable;
+}
diff --git a/OvmfPkg/LoongArchVirt/PlatformPei/Platform.c b/OvmfPkg/LoongArchVirt/PlatformPei/Platform.c
new file mode 100644
index 0000000000..6282c413c7
--- /dev/null
+++ b/OvmfPkg/LoongArchVirt/PlatformPei/Platform.c
@@ -0,0 +1,393 @@
+/** @file
+ Platform PEI driver
+
+ Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ @par Glossary:
+ - Mem - Memory
+**/
+
+//
+// The package level header files this module uses
+//
+#include <PiPei.h>
+//
+// The Library classes this module consumes
+//
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <Library/IoLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/MpInitLib.h>
+#include <Library/PcdLib.h>
+#include <Library/PeimEntryPoint.h>
+#include <Library/PeiServicesLib.h>
+#include <Library/ResourcePublicationLib.h>
+#include <Library/PlatformHookLib.h>
+#include <Guid/MemoryTypeInformation.h>
+#include <Library/QemuFwCfgLib.h>
+#include <Guid/FdtHob.h>
+#include <libfdt.h>
+#include <Ppi/MasterBootMode.h>
+#include <Register/LoongArch64/Cpucfg.h>
+#include <Register/LoongArch64/Csr.h>
+
+#include "Platform.h"
+
+VOID
+SaveRtcRegisterAddressHob (
+ UINT64 RtcRegisterBase
+ );
+
+/* TODO */
+EFI_MEMORY_TYPE_INFORMATION mDefaultMemoryTypeInformation[] = {
+ { EfiReservedMemoryType, 0x004 },
+ { EfiRuntimeServicesData, 0x024 },
+ { EfiRuntimeServicesCode, 0x030 },
+ { EfiBootServicesCode, 0x180 },
+ { EfiBootServicesData, 0xF00 },
+ { EfiMaxMemoryType, 0x000 }
+};
+
+//
+// Module globals
+//
+CONST EFI_PEI_PPI_DESCRIPTOR mPpiListBootMode = {
+ (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
+ &gEfiPeiMasterBootModePpiGuid,
+ NULL
+};
+
+STATIC EFI_BOOT_MODE mBootMode = BOOT_WITH_FULL_CONFIGURATION;
+
+/**
+ Create Reserved type memory range hand off block.
+
+ @param MemoryBase memory base address.
+ @param MemoryLimit memory length.
+
+ @return VOID
+**/
+VOID
+AddReservedMemoryBaseSizeHob (
+ EFI_PHYSICAL_ADDRESS MemoryBase,
+ UINT64 MemorySize
+ )
+{
+ BuildResourceDescriptorHob (
+ EFI_RESOURCE_MEMORY_RESERVED,
+ EFI_RESOURCE_ATTRIBUTE_PRESENT |
+ EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
+ EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
+ EFI_RESOURCE_ATTRIBUTE_TESTED,
+ MemoryBase,
+ MemorySize
+ );
+}
+
+/**
+ Create system type memory range hand off block.
+
+ @param MemoryBase memory base address.
+ @param MemoryLimit memory length.
+
+ @return VOID
+**/
+VOID
+AddMemoryBaseSizeHob (
+ EFI_PHYSICAL_ADDRESS MemoryBase,
+ UINT64 MemorySize
+ )
+{
+ BuildResourceDescriptorHob (
+ EFI_RESOURCE_SYSTEM_MEMORY,
+ EFI_RESOURCE_ATTRIBUTE_PRESENT |
+ EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
+ EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
+ EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
+ EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
+ EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
+ EFI_RESOURCE_ATTRIBUTE_TESTED,
+ MemoryBase,
+ MemorySize
+ );
+}
+
+/**
+ Create memory range hand off block.
+
+ @param MemoryBase memory base address.
+ @param MemoryLimit memory length.
+
+ @return VOID
+**/
+VOID
+AddMemoryRangeHob (
+ EFI_PHYSICAL_ADDRESS MemoryBase,
+ EFI_PHYSICAL_ADDRESS MemoryLimit
+ )
+{
+ AddMemoryBaseSizeHob (MemoryBase, (UINT64)(MemoryLimit - MemoryBase));
+}
+
+/**
+ Create memory type information hand off block.
+
+ @param VOID
+
+ @return VOID
+**/
+VOID
+MemMapInitialization (
+ VOID
+ )
+{
+ DEBUG ((DEBUG_INFO, "==%a==\n", __func__));
+ //
+ // Create Memory Type Information HOB
+ //
+ BuildGuidDataHob (
+ &gEfiMemoryTypeInformationGuid,
+ mDefaultMemoryTypeInformation,
+ sizeof (mDefaultMemoryTypeInformation)
+ );
+}
+
+/** Get the Rtc base address from the DT.
+
+ This function fetches the node referenced in the "loongson,ls7a-rtc"
+ property of the "reg" node and returns the base address of
+ the RTC.
+
+ @param [in] Fdt Pointer to a Flattened Device Tree (Fdt).
+ @param [out] RtcBaseAddress If success, contains the base address
+ of the Rtc.
+
+ @retval EFI_SUCCESS The function completed successfully.
+ @retval EFI_NOT_FOUND RTC info not found in DT.
+ @retval EFI_INVALID_PARAMETER Invalid parameter.
+**/
+STATIC
+EFI_STATUS
+EFIAPI
+GetRtcAddress (
+ IN CONST VOID *Fdt,
+ OUT UINT64 *RtcBaseAddress
+ )
+{
+ INT32 Node;
+ INT32 Prev;
+ CONST CHAR8 *Type;
+ INT32 Len;
+ CONST UINT64 *RegProp;
+ EFI_STATUS Status;
+
+ if ((Fdt == NULL) || (fdt_check_header (Fdt) != 0)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = EFI_NOT_FOUND;
+ for (Prev = 0; ; Prev = Node) {
+ Node = fdt_next_node (Fdt, Prev, NULL);
+ if (Node < 0) {
+ break;
+ }
+
+ //
+ // Check for memory node
+ //
+ Type = fdt_getprop (Fdt, Node, "compatible", &Len);
+ if ((Type) && (AsciiStrnCmp (Type, "loongson,ls7a-rtc", Len) == 0)) {
+ //
+ // Get the 'reg' property of this node. For now, we will assume
+ // two 8 byte quantities for base and size, respectively.
+ //
+ RegProp = fdt_getprop (Fdt, Node, "reg", &Len);
+ if ((RegProp != 0) && (Len == (2 * sizeof (UINT64)))) {
+ *RtcBaseAddress = SwapBytes64 (RegProp[0]);
+ Status = RETURN_SUCCESS;
+ DEBUG ((DEBUG_INFO, "%a Len %d RtcBase %llx\n", __func__, Len, *RtcBaseAddress));
+ break;
+ } else {
+ DEBUG ((DEBUG_ERROR, "%a: Failed to parse FDT rtc node\n", __FUNCTION__));
+ break;
+ }
+ }
+ }
+
+ return Status;
+}
+
+/**
+ Misc Initialization.
+
+ @param VOID
+
+ @return VOID
+**/
+VOID
+MiscInitialization (
+ VOID
+ )
+{
+ CPUCFG_REG1_INFO_DATA CpucfgReg1Data;
+ UINT8 CpuPhysMemAddressWidth;
+
+ DEBUG ((DEBUG_INFO, "==%a==\n", __func__));
+
+ //
+ // Get the the CPU physical memory address width.
+ //
+ AsmCpucfg (CPUCFG_REG1_INFO, &CpucfgReg1Data.Uint32);
+
+ CpuPhysMemAddressWidth = (UINT8)(CpucfgReg1Data.Bits.PALEN + 1);
+
+ //
+ // Creat CPU HOBs.
+ //
+ BuildCpuHob (CpuPhysMemAddressWidth, FixedPcdGet8 (PcdPrePiCpuIoSize));
+}
+
+/**
+ add fdt hand off block.
+
+ @param VOID
+
+ @return VOID
+**/
+VOID
+AddFdtHob (
+ VOID
+ )
+{
+ VOID *Base;
+ VOID *NewBase;
+ UINTN FdtSize;
+ UINTN FdtPages;
+ UINT64 *FdtHobData;
+ UINT64 RtcBaseAddress;
+ RETURN_STATUS Status;
+
+ Base = (VOID *)(UINTN)PcdGet64 (PcdDeviceTreeInitialBaseAddress);
+ ASSERT (Base != NULL);
+
+ Status = GetRtcAddress (Base, &RtcBaseAddress);
+ if (RETURN_ERROR (Status)) {
+ return;
+ }
+
+ SaveRtcRegisterAddressHob (RtcBaseAddress);
+
+ FdtSize = fdt_totalsize (Base) + PcdGet32 (PcdDeviceTreeAllocationPadding);
+ FdtPages = EFI_SIZE_TO_PAGES (FdtSize);
+ NewBase = AllocatePages (FdtPages);
+ ASSERT (NewBase != NULL);
+ fdt_open_into (Base, NewBase, EFI_PAGES_TO_SIZE (FdtPages));
+
+ FdtHobData = BuildGuidHob (&gFdtHobGuid, sizeof *FdtHobData);
+ ASSERT (FdtHobData != NULL);
+ *FdtHobData = (UINTN)NewBase;
+}
+
+/**
+ Fetch the size of system memory from QEMU.
+
+ @param VOID
+
+ @return VOID
+**/
+VOID
+ReportSystemMemorySize (
+ VOID
+ )
+{
+ UINT64 RamSize;
+
+ QemuFwCfgSelectItem (QemuFwCfgItemRamSize);
+ RamSize = QemuFwCfgRead64 ();
+ DEBUG ((
+ DEBUG_INFO,
+ "%a: QEMU reports %dM system memory\n",
+ __FUNCTION__,
+ RamSize/1024/1024
+ ));
+
+ //
+ // Assert false if QEMU report system memory size is less then 256M.
+ //
+ if (RamSize <= SIZE_256MB) {
+ ASSERT (FALSE);
+ }
+}
+
+/**
+ Perform Platform PEI initialization.
+
+ @param FileHandle Handle of the file being invoked.
+ @param PeiServices Describes the list of possible PEI Services.
+
+ @return EFI_SUCCESS The PEIM initialized successfully.
+**/
+EFI_STATUS
+EFIAPI
+InitializePlatform (
+ IN EFI_PEI_FILE_HANDLE FileHandle,
+ IN CONST EFI_PEI_SERVICES **PeiServices
+ )
+{
+ EFI_STATUS Status;
+ UINTN TranslationTableSize;
+ MEMORY_REGION_DESCRIPTOR *MemoryTable;
+
+ DEBUG ((DEBUG_INFO, "Platform PEIM Loaded\n"));
+
+ Status = PeiServicesSetBootMode (mBootMode);
+ ASSERT_EFI_ERROR (Status);
+
+ Status = PeiServicesInstallPpi (&mPpiListBootMode);
+ ASSERT_EFI_ERROR (Status);
+
+ ReportSystemMemorySize ();
+
+ PublishPeiMemory ();
+
+ PeiFvInitialization ();
+ InitializeRamRegions ();
+ MemMapInitialization ();
+
+ Status = PlatformHookSerialPortInitialize ();
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Collect numbers of on line processors and all of APs APIC ID
+ // TODO: Current, the NULL library is used, this library will be populated in the future.
+ //
+ CollectAllProcessorResource ();
+
+ MiscInitialization ();
+
+ AddFdtHob ();
+
+ GetMemoryMapPolicy (&MemoryTable);
+ Status = ConfigureMemoryManagementUnit (
+ MemoryTable,
+ NULL,
+ &TranslationTableSize
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Open MMU.
+ //
+ DEBUG ((DEBUG_INFO, "Open MMU start.\n"));
+ CsrXChg (LOONGARCH_CSR_CRMD, BIT4, BIT4|BIT3);
+ DEBUG ((DEBUG_INFO, "Open MMU done.\n"));
+
+ MpInitLibInitialize ();
+
+ return EFI_SUCCESS;
+}
diff --git a/OvmfPkg/LoongArchVirt/PlatformPei/Platform.h b/OvmfPkg/LoongArchVirt/PlatformPei/Platform.h
new file mode 100644
index 0000000000..0774b0e54a
--- /dev/null
+++ b/OvmfPkg/LoongArchVirt/PlatformPei/Platform.h
@@ -0,0 +1,146 @@
+/** @file
+ Platform PEI module include file.
+
+ Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef PLATFORM_H_
+#define PLATFORM_H_
+
+#include <IndustryStandard/E820.h>
+#include <IndustryStandard/Pci22.h>
+#include <Library/CpuMmuLib.h>
+
+typedef struct {
+ UINT64 BaseAddr;
+ UINT64 Length;
+ UINT32 Type;
+ UINT32 Reserved;
+} MEMMAP_ENTRY;
+
+VOID
+EFIAPI
+CollectAllProcessorResource (
+ VOID
+ );
+
+VOID
+EFIAPI
+SaveProcessorResource (
+ VOID
+ );
+
+/**
+ Create system type memory range hand off block.
+
+ @param MemoryBase memory base address.
+ @param MemoryLimit memory length.
+
+ @return VOID
+**/
+VOID
+AddMemoryBaseSizeHob (
+ EFI_PHYSICAL_ADDRESS MemoryBase,
+ UINT64 MemorySize
+ );
+
+/**
+ Create memory range hand off block.
+
+ @param MemoryBase memory base address.
+ @param MemoryLimit memory length.
+
+ @return VOID
+**/
+VOID
+AddMemoryRangeHob (
+ EFI_PHYSICAL_ADDRESS MemoryBase,
+ EFI_PHYSICAL_ADDRESS MemoryLimit
+ );
+
+/**
+ Create Reserved type memory range hand off block.
+
+ @param MemoryBase memory base address.
+ @param MemoryLimit memory length.
+
+ @return VOID
+**/
+VOID
+AddReservedMemoryBaseSizeHob (
+ EFI_PHYSICAL_ADDRESS MemoryBase,
+ UINT64 MemorySize
+ );
+
+/**
+ Publish PEI core memory
+
+ @return EFI_SUCCESS The PEIM initialized successfully.
+**/
+EFI_STATUS
+PublishPeiMemory (
+ VOID
+ );
+
+/**
+ Publish system RAM and reserve memory regions
+
+ @return VOID
+**/
+VOID
+InitializeRamRegions (
+ VOID
+ );
+
+/**
+ Publish PEI & DXE (Decompressed) Memory based FVs to let PEI
+ and DXE know about them.
+
+ @retval EFI_SUCCESS Platform PEI FVs were initialized successfully.
+**/
+EFI_STATUS
+PeiFvInitialization (
+ VOID
+ );
+
+/**
+ Gets the Virtual Memory Map of corresponding platforms.
+
+ This Virtual Memory Map is used by initialize the MMU on corresponding
+ platforms.
+
+ @param[out] MemoryTable Array of MEMORY_REGION_DESCRIPTOR
+ describing a Physical-to-Virtual Memory
+ mapping. This array must be ended by a
+ zero-filled entry. The allocated memory
+ will not be freed.
+**/
+VOID
+EFIAPI
+GetMemoryMapPolicy (
+ OUT MEMORY_REGION_DESCRIPTOR **MemoryTable
+ );
+
+/**
+ Create a page table and initialize the memory management unit(MMU).
+
+ @param[in] MemoryTable A pointer to a memory ragion table.
+ @param[out] TranslationTableBase A pointer to a translation table base address.
+ @param[out] TranslationTableSize A pointer to a translation table base size.
+
+ @retval EFI_SUCCESS Configure MMU successfully.
+ EFI_INVALID_PARAMETER MemoryTable is NULL.
+ EFI_UNSUPPORTED Out of memory space or size not aligned.
+**/
+EFI_STATUS
+EFIAPI
+ConfigureMemoryManagementUnit (
+ IN MEMORY_REGION_DESCRIPTOR *MemoryTable,
+ OUT VOID **TranslationTableBase OPTIONAL,
+ OUT UINTN *TranslationTableSize OPTIONAL
+ );
+
+#endif // PLATFORM_H_
diff --git a/OvmfPkg/LoongArchVirt/PlatformPei/PlatformPei.inf b/OvmfPkg/LoongArchVirt/PlatformPei/PlatformPei.inf
new file mode 100644
index 0000000000..e793a4da85
--- /dev/null
+++ b/OvmfPkg/LoongArchVirt/PlatformPei/PlatformPei.inf
@@ -0,0 +1,72 @@
+## @file
+# Platform PEI driver
+#
+# Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 1.29
+ BASE_NAME = PlatformPei
+ FILE_GUID = 4c0e81e5-e8e3-4eef-b24b-19b686e9ab53
+ MODULE_TYPE = PEIM
+ VERSION_STRING = 1.0
+ ENTRY_POINT = InitializePlatform
+
+#
+# VALID_ARCHITECTURES = LOONGARCH64
+#
+
+[Sources]
+ Fv.c
+ MemDetect.c
+ Platform.c
+
+[Packages]
+ EmbeddedPkg/EmbeddedPkg.dec
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ OvmfPkg/OvmfPkg.dec
+ UefiCpuPkg/UefiCpuPkg.dec
+
+[Ppis]
+ gEfiPeiMasterBootModePpiGuid
+
+[Guids]
+ gEfiMemoryTypeInformationGuid
+ gFdtHobGuid
+
+[LibraryClasses]
+ BaseMemoryLib
+ CollectApResourceLib
+ CpuMmuLib
+ DebugLib
+ HobLib
+ IoLib
+ MemoryAllocationLib
+ MpInitLib
+ PcdLib
+ PeiResourcePublicationLib
+ PeiServicesLib
+ PeiServicesTablePointerLib
+ PeimEntryPoint
+ PlatformHookLib
+ QemuFwCfgLib
+ RealTimeClockLib
+ TimerLib
+
+[Pcd]
+ gUefiOvmfPkgTokenSpaceGuid.PcdDeviceTreeInitialBaseAddress
+ gUefiOvmfPkgTokenSpaceGuid.PcdDeviceTreeAllocationPadding
+ gEfiMdeModulePkgTokenSpaceGuid.PcdNullPointerDetectionPropertyMask
+
+[FixedPcd]
+ gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecPeiTempRamBase
+ gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecPeiTempRamSize
+ gEmbeddedTokenSpaceGuid.PcdPrePiCpuIoSize
+ gUefiCpuPkgTokenSpaceGuid.PcdCpuExceptionVectorBaseAddress
+
+[Depex]
+ TRUE
--
2.27.0
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On 2023/12/28 下午6:07, Chao Li wrote:
> Platfrom PEI module for LoongArch platfrom initialization.
>
> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584
>
> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Cc: Jordan Justen <jordan.l.justen@intel.com>
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> Signed-off-by: Chao Li <lichao@loongson.cn>
> Co-authored-by: Xianglai Li <lixianglai@loongson.cn>
> Co-authored-by: Bibo Mao <maobibo@loongson.cn>
> ---
> OvmfPkg/LoongArchVirt/PlatformPei/Fv.c | 39 ++
> OvmfPkg/LoongArchVirt/PlatformPei/MemDetect.c | 201 +++++++++
> OvmfPkg/LoongArchVirt/PlatformPei/Platform.c | 393 ++++++++++++++++++
> OvmfPkg/LoongArchVirt/PlatformPei/Platform.h | 146 +++++++
> .../LoongArchVirt/PlatformPei/PlatformPei.inf | 72 ++++
> 5 files changed, 851 insertions(+)
> create mode 100644 OvmfPkg/LoongArchVirt/PlatformPei/Fv.c
> create mode 100644 OvmfPkg/LoongArchVirt/PlatformPei/MemDetect.c
> create mode 100644 OvmfPkg/LoongArchVirt/PlatformPei/Platform.c
> create mode 100644 OvmfPkg/LoongArchVirt/PlatformPei/Platform.h
> create mode 100644 OvmfPkg/LoongArchVirt/PlatformPei/PlatformPei.inf
>
> diff --git a/OvmfPkg/LoongArchVirt/PlatformPei/Fv.c b/OvmfPkg/LoongArchVirt/PlatformPei/Fv.c
> new file mode 100644
> index 0000000000..d46326f135
> --- /dev/null
> +++ b/OvmfPkg/LoongArchVirt/PlatformPei/Fv.c
> @@ -0,0 +1,39 @@
> +/** @file
> + Build FV related hobs for platform.
> +
> + Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include <Library/DebugLib.h>
> +#include <Library/HobLib.h>
> +#include <Library/PeiServicesLib.h>
> +#include <Library/PcdLib.h>
> +#include "Platform.h"
> +
> +/**
> + Publish PEI & DXE (Decompressed) Memory based FVs to let PEI
> + and DXE know about them.
> +
> + @retval EFI_SUCCESS Platform PEI FVs were initialized successfully.
> +**/
> +EFI_STATUS
> +PeiFvInitialization (
> + VOID
> + )
> +{
> + DEBUG ((DEBUG_INFO, "Platform PEI Firmware Volume Initialization\n"));
> +
> + //
> + // Create a memory allocation HOB for the PEI FV.
> + //
> + BuildMemoryAllocationHob (
> + FixedPcdGet64 (PcdOvmfSecPeiTempRamBase),
> + FixedPcdGet32 (PcdOvmfSecPeiTempRamSize),
> + EfiBootServicesData
> + );
> +
> + return EFI_SUCCESS;
> +}
> diff --git a/OvmfPkg/LoongArchVirt/PlatformPei/MemDetect.c b/OvmfPkg/LoongArchVirt/PlatformPei/MemDetect.c
> new file mode 100644
> index 0000000000..9c90413524
> --- /dev/null
> +++ b/OvmfPkg/LoongArchVirt/PlatformPei/MemDetect.c
> @@ -0,0 +1,201 @@
> +/** @file
> + Memory Detection for Virtual Machines.
> +
> + Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +//
> +// The package level header files this module uses
> +//
> +#include <PiPei.h>
> +
> +//
> +// The Library classes this module consumes
> +//
> +#include <Library/BaseMemoryLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/HobLib.h>
> +#include <Library/IoLib.h>
> +#include <Library/MemoryAllocationLib.h>
> +#include <Library/PcdLib.h>
> +#include <Library/PeimEntryPoint.h>
> +#include <Library/QemuFwCfgLib.h>
> +#include <Library/ResourcePublicationLib.h>
> +#include <Register/LoongArch64/Csr.h>
> +#include "Platform.h"
> +
> +#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS (128)
> +#define LOONGARCH_FW_RAM_TOP BASE_256MB
> +
> +/**
> + Publish PEI core memory
> +
> + @return EFI_SUCCESS The PEIM initialized successfully.
> +**/
> +EFI_STATUS
> +PublishPeiMemory (
> + VOID
> + )
> +{
> + EFI_STATUS Status;
> + UINT64 Base;
> + UINT64 Size;
> + UINT64 RamTop;
> +
> + //
> + // Determine the range of memory to use during PEI
> + //
> + Base = FixedPcdGet64 (PcdOvmfSecPeiTempRamBase) + FixedPcdGet32 (PcdOvmfSecPeiTempRamSize);
> + RamTop = LOONGARCH_FW_RAM_TOP;
> + Size = RamTop - Base;
> +
> + //
> + // Publish this memory to the PEI Core
> + //
> + Status = PublishSystemMemory (Base, Size);
> + ASSERT_EFI_ERROR (Status);
> +
> + DEBUG ((DEBUG_INFO, "Publish Memory Initialize done.\n"));
> + return Status;
> +}
> +
> +/**
> + Peform Memory Detection
> + Publish system RAM and reserve memory regions
> +**/
> +VOID
> +InitializeRamRegions (
> + VOID
> + )
> +{
> + EFI_STATUS Status;
> + FIRMWARE_CONFIG_ITEM FwCfgItem;
> + UINTN FwCfgSize;
> + MEMMAP_ENTRY MemoryMapEntry;
> + MEMMAP_ENTRY *StartEntry;
> + MEMMAP_ENTRY *pEntry;
> + UINTN Processed;
> +
> + Status = QemuFwCfgFindFile ("etc/memmap", &FwCfgItem, &FwCfgSize);
> + if (EFI_ERROR (Status)) {
> + DEBUG ((DEBUG_ERROR, "%a %d read etc/memmap error Status %d \n", __func__, __LINE__, Status));
> + return;
> + }
> +
> + if (FwCfgSize % sizeof MemoryMapEntry != 0) {
> + DEBUG ((DEBUG_ERROR, "no MemoryMapEntry FwCfgSize:%d\n", FwCfgSize));
> + return;
> + }
> +
> + QemuFwCfgSelectItem (FwCfgItem);
> + StartEntry = AllocatePages (EFI_SIZE_TO_PAGES (FwCfgSize));
> + QemuFwCfgReadBytes (FwCfgSize, StartEntry);
> + for (Processed = 0; Processed < (FwCfgSize / sizeof MemoryMapEntry); Processed++) {
> + pEntry = StartEntry + Processed;
> + if (pEntry->Length == 0) {
> + continue;
> + }
> +
> + DEBUG ((DEBUG_INFO, "MemmapEntry Base %p length %p type %d\n", pEntry->BaseAddr, pEntry->Length, pEntry->Type));
> + if (pEntry->Type != EfiAcpiAddressRangeMemory) {
> + continue;
> + }
> +
> + AddMemoryRangeHob (pEntry->BaseAddr, pEntry->BaseAddr + pEntry->Length);
> + }
> +
> + //
> + // When 0 address protection is enabled,
> + // 0-4k memory needs to be preallocated to prevent UEFI applications from allocating use,
> + // such as grub
> + //
> + if (PcdGet8 (PcdNullPointerDetectionPropertyMask) & BIT0) {
> + BuildMemoryAllocationHob (
> + 0,
> + EFI_PAGE_SIZE,
> + EfiBootServicesData
> + );
> + }
> +}
> +
> +/**
> + Gets the Virtual Memory Map of corresponding platforms.
> +
> + This Virtual Memory Map is used by initialize the MMU on corresponding
> + platforms.
> +
> + @param[out] MemoryTable Array of MEMORY_REGION_DESCRIPTOR
> + describing a Physical-to-Virtual Memory
> + mapping. This array must be ended by a
> + zero-filled entry. The allocated memory
> + will not be freed.
> +**/
> +VOID
> +EFIAPI
> +GetMemoryMapPolicy (
> + OUT MEMORY_REGION_DESCRIPTOR **MemoryTable
> + )
> +{
> + EFI_STATUS Status;
> + FIRMWARE_CONFIG_ITEM FwCfgItem;
> + UINTN FwCfgSize;
> + MEMMAP_ENTRY MemoryMapEntry;
> + MEMMAP_ENTRY *StartEntry;
> + MEMMAP_ENTRY *pEntry;
> + UINTN Processed;
> + MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable;
> + UINTN Index = 0;
> +
> + ASSERT (MemoryTable != NULL);
> +
> + VirtualMemoryTable = AllocatePool (
> + sizeof (MEMORY_REGION_DESCRIPTOR) *
> + MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS
> + );
> +
> + //
> + // Add the 0x10000000-0x20000000. In the virtual machine, this area use for CPU UART, flash, PIC etc.
> + //
> + VirtualMemoryTable[Index].PhysicalBase = 0x10000000;
> + VirtualMemoryTable[Index].VirtualBase = VirtualMemoryTable[Index].PhysicalBase;
> + VirtualMemoryTable[Index].Length = 0x10000000;
> + VirtualMemoryTable[Index].Attributes = PAGE_VALID | PLV_KERNEL | CACHE_SUC | PAGE_DIRTY | PAGE_GLOBAL;
> + ++Index;
> +
> + Status = QemuFwCfgFindFile ("etc/memmap", &FwCfgItem, &FwCfgSize);
> + if (EFI_ERROR (Status)) {
> + DEBUG ((DEBUG_ERROR, "%a %d read etc/memmap error Status %d \n", __func__, __LINE__, Status));
> + ZeroMem (&VirtualMemoryTable[Index], sizeof (MEMORY_REGION_DESCRIPTOR));
> + *MemoryTable = VirtualMemoryTable;
> + return;
> + }
> +
> + if (FwCfgSize % sizeof MemoryMapEntry != 0) {
> + DEBUG ((DEBUG_ERROR, "no MemoryMapEntry FwCfgSize:%d\n", FwCfgSize));
> + }
> +
> + QemuFwCfgSelectItem (FwCfgItem);
> + StartEntry = AllocatePages (EFI_SIZE_TO_PAGES (FwCfgSize));
> + QemuFwCfgReadBytes (FwCfgSize, StartEntry);
> + for (Processed = 0; Processed < (FwCfgSize / sizeof MemoryMapEntry); Processed++) {
> + pEntry = StartEntry + Processed;
> + if (pEntry->Length == 0) {
> + continue;
> + }
> +
> + DEBUG ((DEBUG_INFO, "MemmapEntry Base %p length %p type %d\n", pEntry->BaseAddr, pEntry->Length, pEntry->Type));
> + VirtualMemoryTable[Index].PhysicalBase = pEntry->BaseAddr;
> + VirtualMemoryTable[Index].VirtualBase = VirtualMemoryTable[Index].PhysicalBase;
> + VirtualMemoryTable[Index].Length = pEntry->Length;
> + VirtualMemoryTable[Index].Attributes = PAGE_VALID | PLV_KERNEL | CACHE_CC | PAGE_DIRTY | PAGE_GLOBAL;
> + ++Index;
> + }
> +
> + FreePages (StartEntry, EFI_SIZE_TO_PAGES (FwCfgSize));
> + // End of Table
> + ZeroMem (&VirtualMemoryTable[Index], sizeof (MEMORY_REGION_DESCRIPTOR));
> + *MemoryTable = VirtualMemoryTable;
> +}
> diff --git a/OvmfPkg/LoongArchVirt/PlatformPei/Platform.c b/OvmfPkg/LoongArchVirt/PlatformPei/Platform.c
> new file mode 100644
> index 0000000000..6282c413c7
> --- /dev/null
> +++ b/OvmfPkg/LoongArchVirt/PlatformPei/Platform.c
> @@ -0,0 +1,393 @@
> +/** @file
> + Platform PEI driver
> +
> + Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> + @par Glossary:
> + - Mem - Memory
> +**/
> +
> +//
> +// The package level header files this module uses
> +//
> +#include <PiPei.h>
> +//
> +// The Library classes this module consumes
> +//
> +#include <Library/BaseLib.h>
> +#include <Library/BaseMemoryLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/HobLib.h>
> +#include <Library/IoLib.h>
> +#include <Library/MemoryAllocationLib.h>
> +#include <Library/MpInitLib.h>
> +#include <Library/PcdLib.h>
> +#include <Library/PeimEntryPoint.h>
> +#include <Library/PeiServicesLib.h>
> +#include <Library/ResourcePublicationLib.h>
> +#include <Library/PlatformHookLib.h>
> +#include <Guid/MemoryTypeInformation.h>
> +#include <Library/QemuFwCfgLib.h>
> +#include <Guid/FdtHob.h>
> +#include <libfdt.h>
> +#include <Ppi/MasterBootMode.h>
> +#include <Register/LoongArch64/Cpucfg.h>
> +#include <Register/LoongArch64/Csr.h>
> +
> +#include "Platform.h"
> +
> +VOID
> +SaveRtcRegisterAddressHob (
> + UINT64 RtcRegisterBase
> + );
> +
> +/* TODO */
> +EFI_MEMORY_TYPE_INFORMATION mDefaultMemoryTypeInformation[] = {
> + { EfiReservedMemoryType, 0x004 },
> + { EfiRuntimeServicesData, 0x024 },
> + { EfiRuntimeServicesCode, 0x030 },
> + { EfiBootServicesCode, 0x180 },
> + { EfiBootServicesData, 0xF00 },
> + { EfiMaxMemoryType, 0x000 }
> +};
> +
> +//
> +// Module globals
> +//
> +CONST EFI_PEI_PPI_DESCRIPTOR mPpiListBootMode = {
> + (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
> + &gEfiPeiMasterBootModePpiGuid,
> + NULL
> +};
> +
> +STATIC EFI_BOOT_MODE mBootMode = BOOT_WITH_FULL_CONFIGURATION;
> +
> +/**
> + Create Reserved type memory range hand off block.
> +
> + @param MemoryBase memory base address.
> + @param MemoryLimit memory length.
> +
> + @return VOID
> +**/
> +VOID
> +AddReservedMemoryBaseSizeHob (
> + EFI_PHYSICAL_ADDRESS MemoryBase,
> + UINT64 MemorySize
> + )
> +{
> + BuildResourceDescriptorHob (
> + EFI_RESOURCE_MEMORY_RESERVED,
> + EFI_RESOURCE_ATTRIBUTE_PRESENT |
> + EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
> + EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
> + EFI_RESOURCE_ATTRIBUTE_TESTED,
> + MemoryBase,
> + MemorySize
> + );
> +}
> +
> +/**
> + Create system type memory range hand off block.
> +
> + @param MemoryBase memory base address.
> + @param MemoryLimit memory length.
> +
> + @return VOID
> +**/
> +VOID
> +AddMemoryBaseSizeHob (
> + EFI_PHYSICAL_ADDRESS MemoryBase,
> + UINT64 MemorySize
> + )
> +{
> + BuildResourceDescriptorHob (
> + EFI_RESOURCE_SYSTEM_MEMORY,
> + EFI_RESOURCE_ATTRIBUTE_PRESENT |
> + EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
> + EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
> + EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
> + EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
> + EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
> + EFI_RESOURCE_ATTRIBUTE_TESTED,
> + MemoryBase,
> + MemorySize
> + );
> +}
> +
> +/**
> + Create memory range hand off block.
> +
> + @param MemoryBase memory base address.
> + @param MemoryLimit memory length.
> +
> + @return VOID
> +**/
> +VOID
> +AddMemoryRangeHob (
> + EFI_PHYSICAL_ADDRESS MemoryBase,
> + EFI_PHYSICAL_ADDRESS MemoryLimit
> + )
> +{
> + AddMemoryBaseSizeHob (MemoryBase, (UINT64)(MemoryLimit - MemoryBase));
> +}
> +
> +/**
> + Create memory type information hand off block.
> +
> + @param VOID
> +
> + @return VOID
> +**/
> +VOID
> +MemMapInitialization (
> + VOID
> + )
> +{
> + DEBUG ((DEBUG_INFO, "==%a==\n", __func__));
> + //
> + // Create Memory Type Information HOB
> + //
> + BuildGuidDataHob (
> + &gEfiMemoryTypeInformationGuid,
> + mDefaultMemoryTypeInformation,
> + sizeof (mDefaultMemoryTypeInformation)
> + );
> +}
> +
> +/** Get the Rtc base address from the DT.
> +
> + This function fetches the node referenced in the "loongson,ls7a-rtc"
> + property of the "reg" node and returns the base address of
> + the RTC.
> +
> + @param [in] Fdt Pointer to a Flattened Device Tree (Fdt).
> + @param [out] RtcBaseAddress If success, contains the base address
> + of the Rtc.
> +
> + @retval EFI_SUCCESS The function completed successfully.
> + @retval EFI_NOT_FOUND RTC info not found in DT.
> + @retval EFI_INVALID_PARAMETER Invalid parameter.
> +**/
> +STATIC
> +EFI_STATUS
> +EFIAPI
> +GetRtcAddress (
> + IN CONST VOID *Fdt,
> + OUT UINT64 *RtcBaseAddress
> + )
> +{
> + INT32 Node;
> + INT32 Prev;
> + CONST CHAR8 *Type;
> + INT32 Len;
> + CONST UINT64 *RegProp;
> + EFI_STATUS Status;
> +
> + if ((Fdt == NULL) || (fdt_check_header (Fdt) != 0)) {
> + return EFI_INVALID_PARAMETER;
> + }
> +
> + Status = EFI_NOT_FOUND;
> + for (Prev = 0; ; Prev = Node) {
> + Node = fdt_next_node (Fdt, Prev, NULL);
> + if (Node < 0) {
> + break;
> + }
> +
> + //
> + // Check for memory node
> + //
> + Type = fdt_getprop (Fdt, Node, "compatible", &Len);
> + if ((Type) && (AsciiStrnCmp (Type, "loongson,ls7a-rtc", Len) == 0)) {
> + //
> + // Get the 'reg' property of this node. For now, we will assume
> + // two 8 byte quantities for base and size, respectively.
> + //
> + RegProp = fdt_getprop (Fdt, Node, "reg", &Len);
> + if ((RegProp != 0) && (Len == (2 * sizeof (UINT64)))) {
> + *RtcBaseAddress = SwapBytes64 (RegProp[0]);
> + Status = RETURN_SUCCESS;
> + DEBUG ((DEBUG_INFO, "%a Len %d RtcBase %llx\n", __func__, Len, *RtcBaseAddress));
> + break;
> + } else {
> + DEBUG ((DEBUG_ERROR, "%a: Failed to parse FDT rtc node\n", __FUNCTION__));
> + break;
> + }
> + }
> + }
> +
> + return Status;
> +}
> +
> +/**
> + Misc Initialization.
> +
> + @param VOID
> +
> + @return VOID
> +**/
> +VOID
> +MiscInitialization (
> + VOID
> + )
> +{
> + CPUCFG_REG1_INFO_DATA CpucfgReg1Data;
> + UINT8 CpuPhysMemAddressWidth;
> +
> + DEBUG ((DEBUG_INFO, "==%a==\n", __func__));
> +
> + //
> + // Get the the CPU physical memory address width.
> + //
> + AsmCpucfg (CPUCFG_REG1_INFO, &CpucfgReg1Data.Uint32);
> +
> + CpuPhysMemAddressWidth = (UINT8)(CpucfgReg1Data.Bits.PALEN + 1);
> +
> + //
> + // Creat CPU HOBs.
> + //
> + BuildCpuHob (CpuPhysMemAddressWidth, FixedPcdGet8 (PcdPrePiCpuIoSize));
> +}
> +
> +/**
> + add fdt hand off block.
> +
> + @param VOID
> +
> + @return VOID
> +**/
> +VOID
> +AddFdtHob (
> + VOID
> + )
> +{
> + VOID *Base;
> + VOID *NewBase;
> + UINTN FdtSize;
> + UINTN FdtPages;
> + UINT64 *FdtHobData;
> + UINT64 RtcBaseAddress;
> + RETURN_STATUS Status;
> +
> + Base = (VOID *)(UINTN)PcdGet64 (PcdDeviceTreeInitialBaseAddress);
> + ASSERT (Base != NULL);
> +
> + Status = GetRtcAddress (Base, &RtcBaseAddress);
> + if (RETURN_ERROR (Status)) {
> + return;
> + }
> +
> + SaveRtcRegisterAddressHob (RtcBaseAddress);
> +
> + FdtSize = fdt_totalsize (Base) + PcdGet32 (PcdDeviceTreeAllocationPadding);
> + FdtPages = EFI_SIZE_TO_PAGES (FdtSize);
> + NewBase = AllocatePages (FdtPages);
> + ASSERT (NewBase != NULL);
> + fdt_open_into (Base, NewBase, EFI_PAGES_TO_SIZE (FdtPages));
> +
> + FdtHobData = BuildGuidHob (&gFdtHobGuid, sizeof *FdtHobData);
> + ASSERT (FdtHobData != NULL);
> + *FdtHobData = (UINTN)NewBase;
> +}
> +
> +/**
> + Fetch the size of system memory from QEMU.
> +
> + @param VOID
> +
> + @return VOID
> +**/
> +VOID
> +ReportSystemMemorySize (
> + VOID
> + )
> +{
> + UINT64 RamSize;
> +
> + QemuFwCfgSelectItem (QemuFwCfgItemRamSize);
> + RamSize = QemuFwCfgRead64 ();
> + DEBUG ((
> + DEBUG_INFO,
> + "%a: QEMU reports %dM system memory\n",
> + __FUNCTION__,
> + RamSize/1024/1024
> + ));
> +
> + //
> + // Assert false if QEMU report system memory size is less then 256M.
> + //
> + if (RamSize <= SIZE_256MB) {
> + ASSERT (FALSE);
> + }
> +}
> +
> +/**
> + Perform Platform PEI initialization.
> +
> + @param FileHandle Handle of the file being invoked.
> + @param PeiServices Describes the list of possible PEI Services.
> +
> + @return EFI_SUCCESS The PEIM initialized successfully.
> +**/
> +EFI_STATUS
> +EFIAPI
> +InitializePlatform (
> + IN EFI_PEI_FILE_HANDLE FileHandle,
> + IN CONST EFI_PEI_SERVICES **PeiServices
> + )
> +{
> + EFI_STATUS Status;
> + UINTN TranslationTableSize;
> + MEMORY_REGION_DESCRIPTOR *MemoryTable;
> +
> + DEBUG ((DEBUG_INFO, "Platform PEIM Loaded\n"));
> +
> + Status = PeiServicesSetBootMode (mBootMode);
> + ASSERT_EFI_ERROR (Status);
> +
> + Status = PeiServicesInstallPpi (&mPpiListBootMode);
> + ASSERT_EFI_ERROR (Status);
> +
> + ReportSystemMemorySize ();
> +
> + PublishPeiMemory ();
> +
> + PeiFvInitialization ();
> + InitializeRamRegions ();
> + MemMapInitialization ();
> +
> + Status = PlatformHookSerialPortInitialize ();
> + ASSERT_EFI_ERROR (Status);
> +
> + //
> + // Collect numbers of on line processors and all of APs APIC ID
> + // TODO: Current, the NULL library is used, this library will be populated in the future.
> + //
> + CollectAllProcessorResource ();
> +
> + MiscInitialization ();
> +
> + AddFdtHob ();
> +
> + GetMemoryMapPolicy (&MemoryTable);
> + Status = ConfigureMemoryManagementUnit (
> + MemoryTable,
> + NULL,
> + &TranslationTableSize
> + );
> + ASSERT_EFI_ERROR (Status);
> +
> + //
> + // Open MMU.
> + //
> + DEBUG ((DEBUG_INFO, "Open MMU start.\n"));
> + CsrXChg (LOONGARCH_CSR_CRMD, BIT4, BIT4|BIT3);
> + DEBUG ((DEBUG_INFO, "Open MMU done.\n"));
> +
> + MpInitLibInitialize ();
> +
> + return EFI_SUCCESS;
> +}
> diff --git a/OvmfPkg/LoongArchVirt/PlatformPei/Platform.h b/OvmfPkg/LoongArchVirt/PlatformPei/Platform.h
> new file mode 100644
> index 0000000000..0774b0e54a
> --- /dev/null
> +++ b/OvmfPkg/LoongArchVirt/PlatformPei/Platform.h
> @@ -0,0 +1,146 @@
> +/** @file
> + Platform PEI module include file.
> +
> + Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#ifndef PLATFORM_H_
> +#define PLATFORM_H_
> +
> +#include <IndustryStandard/E820.h>
> +#include <IndustryStandard/Pci22.h>
> +#include <Library/CpuMmuLib.h>
> +
> +typedef struct {
> + UINT64 BaseAddr;
> + UINT64 Length;
> + UINT32 Type;
> + UINT32 Reserved;
> +} MEMMAP_ENTRY;
> +
> +VOID
> +EFIAPI
> +CollectAllProcessorResource (
> + VOID
> + );
> +
> +VOID
> +EFIAPI
> +SaveProcessorResource (
> + VOID
> + );
> +
> +/**
> + Create system type memory range hand off block.
> +
> + @param MemoryBase memory base address.
> + @param MemoryLimit memory length.
> +
> + @return VOID
> +**/
> +VOID
> +AddMemoryBaseSizeHob (
> + EFI_PHYSICAL_ADDRESS MemoryBase,
> + UINT64 MemorySize
> + );
> +
> +/**
> + Create memory range hand off block.
> +
> + @param MemoryBase memory base address.
> + @param MemoryLimit memory length.
> +
> + @return VOID
> +**/
> +VOID
> +AddMemoryRangeHob (
> + EFI_PHYSICAL_ADDRESS MemoryBase,
> + EFI_PHYSICAL_ADDRESS MemoryLimit
> + );
> +
> +/**
> + Create Reserved type memory range hand off block.
> +
> + @param MemoryBase memory base address.
> + @param MemoryLimit memory length.
> +
> + @return VOID
> +**/
> +VOID
> +AddReservedMemoryBaseSizeHob (
> + EFI_PHYSICAL_ADDRESS MemoryBase,
> + UINT64 MemorySize
> + );
> +
> +/**
> + Publish PEI core memory
> +
> + @return EFI_SUCCESS The PEIM initialized successfully.
> +**/
> +EFI_STATUS
> +PublishPeiMemory (
> + VOID
> + );
> +
> +/**
> + Publish system RAM and reserve memory regions
> +
> + @return VOID
> +**/
> +VOID
> +InitializeRamRegions (
> + VOID
> + );
> +
> +/**
> + Publish PEI & DXE (Decompressed) Memory based FVs to let PEI
> + and DXE know about them.
> +
> + @retval EFI_SUCCESS Platform PEI FVs were initialized successfully.
> +**/
> +EFI_STATUS
> +PeiFvInitialization (
> + VOID
> + );
> +
> +/**
> + Gets the Virtual Memory Map of corresponding platforms.
> +
> + This Virtual Memory Map is used by initialize the MMU on corresponding
> + platforms.
> +
> + @param[out] MemoryTable Array of MEMORY_REGION_DESCRIPTOR
> + describing a Physical-to-Virtual Memory
> + mapping. This array must be ended by a
> + zero-filled entry. The allocated memory
> + will not be freed.
> +**/
> +VOID
> +EFIAPI
> +GetMemoryMapPolicy (
> + OUT MEMORY_REGION_DESCRIPTOR **MemoryTable
> + );
> +
> +/**
> + Create a page table and initialize the memory management unit(MMU).
> +
> + @param[in] MemoryTable A pointer to a memory ragion table.
> + @param[out] TranslationTableBase A pointer to a translation table base address.
> + @param[out] TranslationTableSize A pointer to a translation table base size.
> +
> + @retval EFI_SUCCESS Configure MMU successfully.
> + EFI_INVALID_PARAMETER MemoryTable is NULL.
> + EFI_UNSUPPORTED Out of memory space or size not aligned.
> +**/
> +EFI_STATUS
> +EFIAPI
> +ConfigureMemoryManagementUnit (
> + IN MEMORY_REGION_DESCRIPTOR *MemoryTable,
> + OUT VOID **TranslationTableBase OPTIONAL,
> + OUT UINTN *TranslationTableSize OPTIONAL
> + );
> +
> +#endif // PLATFORM_H_
> diff --git a/OvmfPkg/LoongArchVirt/PlatformPei/PlatformPei.inf b/OvmfPkg/LoongArchVirt/PlatformPei/PlatformPei.inf
> new file mode 100644
> index 0000000000..e793a4da85
> --- /dev/null
> +++ b/OvmfPkg/LoongArchVirt/PlatformPei/PlatformPei.inf
> @@ -0,0 +1,72 @@
> +## @file
> +# Platform PEI driver
> +#
> +# Copyright (c) 2024 Loongson Technology Corporation Limited. All rights reserved.<BR>
> +#
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +##
> +
> +[Defines]
> + INF_VERSION = 1.29
> + BASE_NAME = PlatformPei
> + FILE_GUID = 4c0e81e5-e8e3-4eef-b24b-19b686e9ab53
> + MODULE_TYPE = PEIM
> + VERSION_STRING = 1.0
> + ENTRY_POINT = InitializePlatform
> +
> +#
> +# VALID_ARCHITECTURES = LOONGARCH64
> +#
> +
> +[Sources]
> + Fv.c
> + MemDetect.c
> + Platform.c
> +
> +[Packages]
> + EmbeddedPkg/EmbeddedPkg.dec
> + MdePkg/MdePkg.dec
> + MdeModulePkg/MdeModulePkg.dec
> + OvmfPkg/OvmfPkg.dec
> + UefiCpuPkg/UefiCpuPkg.dec
> +
> +[Ppis]
> + gEfiPeiMasterBootModePpiGuid
> +
> +[Guids]
> + gEfiMemoryTypeInformationGuid
> + gFdtHobGuid
> +
> +[LibraryClasses]
> + BaseMemoryLib
> + CollectApResourceLib
> + CpuMmuLib
> + DebugLib
> + HobLib
> + IoLib
> + MemoryAllocationLib
> + MpInitLib
> + PcdLib
> + PeiResourcePublicationLib
> + PeiServicesLib
> + PeiServicesTablePointerLib
> + PeimEntryPoint
> + PlatformHookLib
> + QemuFwCfgLib
> + RealTimeClockLib
> + TimerLib
> +
> +[Pcd]
> + gUefiOvmfPkgTokenSpaceGuid.PcdDeviceTreeInitialBaseAddress
> + gUefiOvmfPkgTokenSpaceGuid.PcdDeviceTreeAllocationPadding
> + gEfiMdeModulePkgTokenSpaceGuid.PcdNullPointerDetectionPropertyMask
> +
> +[FixedPcd]
> + gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecPeiTempRamBase
> + gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecPeiTempRamSize
> + gEmbeddedTokenSpaceGuid.PcdPrePiCpuIoSize
> + gUefiCpuPkgTokenSpaceGuid.PcdCpuExceptionVectorBaseAddress
> +
> +[Depex]
> + TRUE
>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
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