| /** @file | |
| SdMmcPciHcPei driver is used to provide platform-dependent info, mainly SD/MMC | |
| host controller MMIO base, to upper layer SD/MMC drivers. | |
| Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR> | |
| SPDX-License-Identifier: BSD-2-Clause-Patent | |
| **/ | |
| #include "SdMmcPciHcPei.h" | |
| EDKII_SD_MMC_HOST_CONTROLLER_PPI mSdMmcHostControllerPpi = { GetSdMmcHcMmioBar }; | |
| EFI_PEI_PPI_DESCRIPTOR mPpiList = { | |
| (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST), | |
| &gEdkiiPeiSdMmcHostControllerPpiGuid, | |
| &mSdMmcHostControllerPpi | |
| }; | |
| /** | |
| Get the MMIO base address of SD/MMC host controller. | |
| @param[in] This The protocol instance pointer. | |
| @param[in] ControllerId The ID of the SD/MMC host controller. | |
| @param[in,out] MmioBar The pointer to store the array of available | |
| SD/MMC host controller slot MMIO base addresses. | |
| The entry number of the array is specified by BarNum. | |
| @param[out] BarNum The pointer to store the supported bar number. | |
| @retval EFI_SUCCESS The operation succeeds. | |
| @retval EFI_INVALID_PARAMETER The parameters are invalid. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| GetSdMmcHcMmioBar ( | |
| IN EDKII_SD_MMC_HOST_CONTROLLER_PPI *This, | |
| IN UINT8 ControllerId, | |
| IN OUT UINTN **MmioBar, | |
| OUT UINT8 *BarNum | |
| ) | |
| { | |
| SD_MMC_HC_PEI_PRIVATE_DATA *Private; | |
| if ((This == NULL) || (MmioBar == NULL) || (BarNum == NULL)) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| Private = SD_MMC_HC_PEI_PRIVATE_DATA_FROM_THIS (This); | |
| if (ControllerId >= Private->TotalSdMmcHcs) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| *MmioBar = &Private->MmioBar[ControllerId].MmioBarAddr[0]; | |
| *BarNum = (UINT8)Private->MmioBar[ControllerId].SlotNum; | |
| return EFI_SUCCESS; | |
| } | |
| /** | |
| The user code starts with this function. | |
| @param FileHandle Handle of the file being invoked. | |
| @param PeiServices Describes the list of possible PEI Services. | |
| @retval EFI_SUCCESS The driver is successfully initialized. | |
| @retval Others Can't initialize the driver. | |
| **/ | |
| EFI_STATUS | |
| EFIAPI | |
| InitializeSdMmcHcPeim ( | |
| IN EFI_PEI_FILE_HANDLE FileHandle, | |
| IN CONST EFI_PEI_SERVICES **PeiServices | |
| ) | |
| { | |
| EFI_BOOT_MODE BootMode; | |
| EFI_STATUS Status; | |
| UINT16 Bus; | |
| UINT16 Device; | |
| UINT16 Function; | |
| UINT32 Size; | |
| UINT64 MmioSize; | |
| UINT8 SubClass; | |
| UINT8 BaseClass; | |
| UINT8 SlotInfo; | |
| UINT8 SlotNum; | |
| UINT8 FirstBar; | |
| UINT8 Index; | |
| UINT8 Slot; | |
| UINT32 BarAddr; | |
| SD_MMC_HC_PEI_PRIVATE_DATA *Private; | |
| // | |
| // Shadow this PEIM to run from memory | |
| // | |
| if (!EFI_ERROR (PeiServicesRegisterForShadow (FileHandle))) { | |
| return EFI_SUCCESS; | |
| } | |
| Status = PeiServicesGetBootMode (&BootMode); | |
| /// | |
| /// We do not expose this in S3 boot path, because it is only for recovery. | |
| /// | |
| if (BootMode == BOOT_ON_S3_RESUME) { | |
| return EFI_SUCCESS; | |
| } | |
| Private = (SD_MMC_HC_PEI_PRIVATE_DATA *)AllocateZeroPool (sizeof (SD_MMC_HC_PEI_PRIVATE_DATA)); | |
| if (Private == NULL) { | |
| DEBUG ((DEBUG_ERROR, "Failed to allocate memory for SD_MMC_HC_PEI_PRIVATE_DATA! \n")); | |
| return EFI_OUT_OF_RESOURCES; | |
| } | |
| Private->Signature = SD_MMC_HC_PEI_SIGNATURE; | |
| Private->SdMmcHostControllerPpi = mSdMmcHostControllerPpi; | |
| Private->PpiList = mPpiList; | |
| Private->PpiList.Ppi = &Private->SdMmcHostControllerPpi; | |
| BarAddr = PcdGet32 (PcdSdMmcPciHostControllerMmioBase); | |
| for (Bus = 0; Bus < 256; Bus++) { | |
| for (Device = 0; Device < 32; Device++) { | |
| for (Function = 0; Function < 8; Function++) { | |
| SubClass = PciRead8 (PCI_LIB_ADDRESS (Bus, Device, Function, 0x0A)); | |
| BaseClass = PciRead8 (PCI_LIB_ADDRESS (Bus, Device, Function, 0x0B)); | |
| if ((SubClass == PCI_SUBCLASS_SD_HOST_CONTROLLER) && (BaseClass == PCI_CLASS_SYSTEM_PERIPHERAL)) { | |
| // | |
| // Get the SD/MMC Pci host controller's Slot Info. | |
| // | |
| SlotInfo = PciRead8 (PCI_LIB_ADDRESS (Bus, Device, Function, SD_MMC_HC_PEI_SLOT_OFFSET)); | |
| FirstBar = (*(SD_MMC_HC_PEI_SLOT_INFO *)&SlotInfo).FirstBar; | |
| SlotNum = (*(SD_MMC_HC_PEI_SLOT_INFO *)&SlotInfo).SlotNum + 1; | |
| ASSERT ((FirstBar + SlotNum) < MAX_SD_MMC_SLOTS); | |
| for (Index = 0, Slot = FirstBar; Slot < (FirstBar + SlotNum); Index++, Slot++) { | |
| // | |
| // Get the SD/MMC Pci host controller's MMIO region size. | |
| // | |
| PciAnd16 (PCI_LIB_ADDRESS (Bus, Device, Function, PCI_COMMAND_OFFSET), (UINT16) ~(EFI_PCI_COMMAND_BUS_MASTER | EFI_PCI_COMMAND_MEMORY_SPACE)); | |
| PciWrite32 (PCI_LIB_ADDRESS (Bus, Device, Function, PCI_BASE_ADDRESSREG_OFFSET + 4 * Slot), 0xFFFFFFFF); | |
| Size = PciRead32 (PCI_LIB_ADDRESS (Bus, Device, Function, PCI_BASE_ADDRESSREG_OFFSET + 4 * Slot)); | |
| switch (Size & 0x07) { | |
| case 0x0: | |
| // | |
| // Memory space: anywhere in 32 bit address space | |
| // | |
| MmioSize = (~(Size & 0xFFFFFFF0)) + 1; | |
| break; | |
| case 0x4: | |
| // | |
| // Memory space: anywhere in 64 bit address space | |
| // | |
| MmioSize = Size & 0xFFFFFFF0; | |
| PciWrite32 (PCI_LIB_ADDRESS (Bus, Device, Function, PCI_BASE_ADDRESSREG_OFFSET + 4), 0xFFFFFFFF); | |
| Size = PciRead32 (PCI_LIB_ADDRESS (Bus, Device, Function, PCI_BASE_ADDRESSREG_OFFSET + 4)); | |
| // | |
| // Fix the length to support some spefic 64 bit BAR | |
| // | |
| Size |= ((UINT32)(-1) << HighBitSet32 (Size)); | |
| // | |
| // Calculate the size of 64bit bar | |
| // | |
| MmioSize |= LShiftU64 ((UINT64)Size, 32); | |
| MmioSize = (~(MmioSize)) + 1; | |
| // | |
| // Clean the high 32bits of this 64bit BAR to 0 as we only allow a 32bit BAR. | |
| // | |
| PciWrite32 (PCI_LIB_ADDRESS (Bus, Device, Function, PCI_BASE_ADDRESSREG_OFFSET + 4 * Slot + 4), 0); | |
| break; | |
| default: | |
| // | |
| // Unknown BAR type | |
| // | |
| ASSERT (FALSE); | |
| continue; | |
| } | |
| // | |
| // Assign resource to the SdMmc Pci host controller's MMIO BAR. | |
| // Enable the SdMmc Pci host controller by setting BME and MSE bits of PCI_CMD register. | |
| // | |
| PciWrite32 (PCI_LIB_ADDRESS (Bus, Device, Function, PCI_BASE_ADDRESSREG_OFFSET + 4 * Slot), BarAddr); | |
| PciOr16 (PCI_LIB_ADDRESS (Bus, Device, Function, PCI_COMMAND_OFFSET), (EFI_PCI_COMMAND_BUS_MASTER | EFI_PCI_COMMAND_MEMORY_SPACE)); | |
| // | |
| // Record the allocated Mmio base address. | |
| // | |
| Private->MmioBar[Private->TotalSdMmcHcs].SlotNum++; | |
| Private->MmioBar[Private->TotalSdMmcHcs].MmioBarAddr[Index] = BarAddr; | |
| BarAddr += (UINT32)MmioSize; | |
| } | |
| Private->TotalSdMmcHcs++; | |
| ASSERT (Private->TotalSdMmcHcs < MAX_SD_MMC_HCS); | |
| } | |
| } | |
| } | |
| } | |
| /// | |
| /// Install SdMmc Host Controller PPI | |
| /// | |
| Status = PeiServicesInstallPpi (&Private->PpiList); | |
| ASSERT_EFI_ERROR (Status); | |
| return Status; | |
| } |