From 11556a5b3801c542b25fbd50a0b270950e6ef72c Mon Sep 17 00:00:00 2001 From: Chandni Cherukuri Date: Mon, 19 Apr 2021 11:10:38 +0530 Subject: Platform/ARM/Morello: Add support for PciHostBridgeLib Morello FVP platform supports a PCIe root complex. This patch implements PciHostBridgeLib to support PCIe. Signed-off-by: Chandni Cherukuri Reviewed-by: Sami Mujawar --- .../Library/PciHostBridgeLib/PciHostBridgeLibFvp.c | 180 +++++++++++++++++++++ .../PciHostBridgeLib/PciHostBridgeLibFvp.inf | 48 ++++++ 2 files changed, 228 insertions(+) create mode 100644 Platform/ARM/Morello/Library/PciHostBridgeLib/PciHostBridgeLibFvp.c create mode 100644 Platform/ARM/Morello/Library/PciHostBridgeLib/PciHostBridgeLibFvp.inf diff --git a/Platform/ARM/Morello/Library/PciHostBridgeLib/PciHostBridgeLibFvp.c b/Platform/ARM/Morello/Library/PciHostBridgeLib/PciHostBridgeLibFvp.c new file mode 100644 index 00000000..042cbbdc --- /dev/null +++ b/Platform/ARM/Morello/Library/PciHostBridgeLib/PciHostBridgeLibFvp.c @@ -0,0 +1,180 @@ +/** @file + PCI Host Bridge Library instance for ARM Morello FVP platform. + + Copyright (c) 2021, ARM Limited. All rights reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent +**/ + +#include +#include +#include +#include + +#define ROOT_COMPLEX_NUM 1 + +GLOBAL_REMOVE_IF_UNREFERENCED +STATIC CHAR16 CONST * CONST mPciHostBridgeLibAcpiAddressSpaceTypeStr[] = { + L"Mem", L"I/O", L"Bus" +}; + +#pragma pack(1) +typedef struct { + ACPI_HID_DEVICE_PATH AcpiDevicePath; + EFI_DEVICE_PATH_PROTOCOL EndDevicePath; +} EFI_PCI_ROOT_BRIDGE_DEVICE_PATH; +#pragma pack () + +STATIC EFI_PCI_ROOT_BRIDGE_DEVICE_PATH mEfiPciRootBridgeDevicePath[ROOT_COMPLEX_NUM] = { + { + { + { + ACPI_DEVICE_PATH, + ACPI_DP, + { + (UINT8)sizeof (ACPI_HID_DEVICE_PATH), + (UINT8)(sizeof (ACPI_HID_DEVICE_PATH) >> 8) + } + }, + EISA_PNP_ID(0x0A08), + 0 + }, + { + END_DEVICE_PATH_TYPE, + END_ENTIRE_DEVICE_PATH_SUBTYPE, + { + END_DEVICE_PATH_LENGTH, + 0 + } + } + }, +}; + +STATIC PCI_ROOT_BRIDGE mPciRootBridge[ROOT_COMPLEX_NUM] = { + { + 0, // Segment + 0, // Supports + 0, // Attributes + TRUE, // DmaAbove4G + FALSE, // NoExtendedConfigSpace + FALSE, // ResourceAssigned + EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM | // AllocationAttributes + EFI_PCI_HOST_BRIDGE_MEM64_DECODE, + { + // Bus + FixedPcdGet32 (PcdPciBusMin), + FixedPcdGet32 (PcdPciBusMax) + }, { + // Io + FixedPcdGet64 (PcdPciIoBase), + FixedPcdGet64 (PcdPciIoBase) + FixedPcdGet64 (PcdPciIoSize) - 1 + }, { + // Mem + FixedPcdGet32 (PcdPciMmio32Base), + FixedPcdGet32 (PcdPciMmio32Base) + FixedPcdGet32 (PcdPciMmio32Size) - 1 + }, { + // MemAbove4G + FixedPcdGet64 (PcdPciMmio64Base), + FixedPcdGet64 (PcdPciMmio64Base) + FixedPcdGet64 (PcdPciMmio64Size) - 1 + }, { + // PMem + MAX_UINT64, + 0 + }, { + // PMemAbove4G + MAX_UINT64, + 0 + }, + (EFI_DEVICE_PATH_PROTOCOL *)&mEfiPciRootBridgeDevicePath[0] + }, +}; + +/** + Return all the root bridge instances in an array. + + @param Count Return the count of root bridge instances. + + @return All the root bridge instances in an array. + The array should be passed into PciHostBridgeFreeRootBridges() + when it's not used. +**/ +PCI_ROOT_BRIDGE * +EFIAPI +PciHostBridgeGetRootBridges ( + UINTN *Count + ) +{ + *Count = ARRAY_SIZE (mPciRootBridge); + return mPciRootBridge; +} + +/** + Free the root bridge instances array returned from PciHostBridgeGetRootBridges(). + + @param Bridges The root bridge instances array. + @param Count The count of the array. +**/ +VOID +EFIAPI +PciHostBridgeFreeRootBridges ( + PCI_ROOT_BRIDGE *Bridges, + UINTN Count + ) +{ +} + +/** + Inform the platform that the resource conflict happens. + + @param HostBridgeHandle Handle of the Host Bridge. + @param Configuration Pointer to PCI I/O and PCI memory resource + descriptors. The Configuration contains the resources + for all the root bridges. The resource for each root + bridge is terminated with END descriptor and an + additional END is appended indicating the end of the + entire resources. The resource descriptor field + values follow the description in + EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL + .SubmitResources(). +**/ +VOID +EFIAPI +PciHostBridgeResourceConflict ( + EFI_HANDLE HostBridgeHandle, + VOID *Configuration + ) +{ + EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptor; + UINTN RootBridgeIndex; + DEBUG ((DEBUG_ERROR, "PciHostBridge: Resource conflict happens!\n")); + + RootBridgeIndex = 0; + Descriptor = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Configuration; + while (Descriptor->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR) { + DEBUG ((DEBUG_ERROR, "RootBridge[%d]:\n", RootBridgeIndex++)); + for (; Descriptor->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR; Descriptor++) { + ASSERT (Descriptor->ResType < + (ARRAY_SIZE (mPciHostBridgeLibAcpiAddressSpaceTypeStr)) + ); + DEBUG ((DEBUG_ERROR, "%s: Length/Alignment = 0x%lx / 0x%lx\n", + mPciHostBridgeLibAcpiAddressSpaceTypeStr[Descriptor->ResType], + Descriptor->AddrLen, Descriptor->AddrRangeMax + )); + if (Descriptor->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM) { + DEBUG ((DEBUG_ERROR, "Granularity/SpecificFlag = %ld / %02x%s\n", + Descriptor->AddrSpaceGranularity, Descriptor->SpecificFlag, + ((Descriptor->SpecificFlag & + EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_CACHEABLE_PREFETCHABLE + ) != 0) ? L" (Prefetchable)" : L"" + )); + } + } + // + // Skip the END descriptor for root bridge + // + ASSERT (Descriptor->Desc == ACPI_END_TAG_DESCRIPTOR); + Descriptor = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)( + (EFI_ACPI_END_TAG_DESCRIPTOR *)Descriptor + 1 + ); + } +} diff --git a/Platform/ARM/Morello/Library/PciHostBridgeLib/PciHostBridgeLibFvp.inf b/Platform/ARM/Morello/Library/PciHostBridgeLib/PciHostBridgeLibFvp.inf new file mode 100644 index 00000000..1d6c5b01 --- /dev/null +++ b/Platform/ARM/Morello/Library/PciHostBridgeLib/PciHostBridgeLibFvp.inf @@ -0,0 +1,48 @@ +## @file +# PCI Host Bridge Library instance for ARM Morello FVP platform. +# +# Copyright (c) 2021, ARM Limited. All rights reserved.
+# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION = 0x0001001B + BASE_NAME = PciHostBridgeLib + FILE_GUID = 6879CEAD-DC94-42EB-895C-096D36B8083C + MODULE_TYPE = DXE_DRIVER + VERSION_STRING = 1.0 + LIBRARY_CLASS = PciHostBridgeLib|DXE_DRIVER + +# +# The following information is for reference only and not required by the build +# tools. +# +# VALID_ARCHITECTURES = AARCH64 +# + +[Sources] + PciHostBridgeLibFvp.c + +[Packages] + ArmPkg/ArmPkg.dec + MdeModulePkg/MdeModulePkg.dec + MdePkg/MdePkg.dec + Platform/ARM/Morello/MorelloPlatform.dec + +[FixedPcd] + gArmMorelloTokenSpaceGuid.PcdPciBusMax + gArmMorelloTokenSpaceGuid.PcdPciBusMin + gArmMorelloTokenSpaceGuid.PcdPciIoBase + gArmMorelloTokenSpaceGuid.PcdPciIoSize + gArmMorelloTokenSpaceGuid.PcdPciMmio32Base + gArmMorelloTokenSpaceGuid.PcdPciMmio32Size + gArmMorelloTokenSpaceGuid.PcdPciMmio64Base + gArmMorelloTokenSpaceGuid.PcdPciMmio64Size + +[Protocols] + gEfiCpuIo2ProtocolGuid ## CONSUMES + +[Depex] + gEfiCpuIo2ProtocolGuid -- cgit v1.2.3