diff options
Diffstat (limited to 'Silicon/Intel/LewisburgPkg/Library/PeiDxeSmmPchGbeLib/PchGbeLib.c')
| -rw-r--r-- | Silicon/Intel/LewisburgPkg/Library/PeiDxeSmmPchGbeLib/PchGbeLib.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/Silicon/Intel/LewisburgPkg/Library/PeiDxeSmmPchGbeLib/PchGbeLib.c b/Silicon/Intel/LewisburgPkg/Library/PeiDxeSmmPchGbeLib/PchGbeLib.c new file mode 100644 index 0000000000..9d3304a1aa --- /dev/null +++ b/Silicon/Intel/LewisburgPkg/Library/PeiDxeSmmPchGbeLib/PchGbeLib.c @@ -0,0 +1,166 @@ +/** @file + +Copyright (c) 2018, Intel Corporation. All rights reserved.<BR> +This program and the accompanying materials are licensed and made available under +the terms and conditions of the BSD License that accompanies this distribution. +The full text of the license may be found at +http://opensource.org/licenses/bsd-license.php. + +THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#include <Base.h> +#include <Uefi/UefiBaseType.h> +#include <Library/IoLib.h> +#include <Library/DebugLib.h> +#include <Library/BaseLib.h> +#include <Library/MmPciBaseLib.h> +#include <Library/PchPmcLib.h> +#include <PchAccess.h> +#include <Library/PchInfoLib.h> +#include <Library/PchPcrLib.h> +#include <Library/PchCycleDecodingLib.h> + +#include <PiPei.h> +#include <Ppi/Spi.h> +#include <Library/PeiServicesLib.h> +extern EFI_GUID gPeiSpiPpiGuid; +/** + Check whether GbE region is valid + Check SPI region directly since GbE might be disabled in SW. + + @retval TRUE Gbe Region is valid + @retval FALSE Gbe Region is invalid +**/ +BOOLEAN +PchIsGbeRegionValid ( + VOID + ) +{ + UINT32 SpiBar; + SpiBar = MmioRead32 (MmPciBase ( + DEFAULT_PCI_BUS_NUMBER_PCH, + PCI_DEVICE_NUMBER_PCH_SPI, + PCI_FUNCTION_NUMBER_PCH_SPI) + + R_PCH_SPI_BAR0) & ~B_PCH_SPI_BAR0_MASK; + ASSERT (SpiBar != 0); + if (MmioRead32 (SpiBar + R_PCH_SPI_FREG3_GBE) != B_PCH_SPI_FREGX_BASE_MASK) { + return TRUE; + } + return FALSE; +} + +/** + Returns GbE over PCIe port number based on a soft strap. + + @return Root port number (1-based) + @retval 0 GbE over PCIe disabled +**/ +UINT32 +PchGetGbePortNumber ( + VOID + ) +{ + UINT32 GbePortSel; + UINT32 PcieStrapFuse; + + PchPcrRead32 (PID_FIAWM26, R_PCH_PCR_FIA_STRPFUSECFG1_REG_BASE, &PcieStrapFuse); + if ((PcieStrapFuse & B_PCH_PCR_FIA_STRPFUSECFG1_GBE_PCIE_PEN) == 0) { + return 0; // GbE disabled + } + GbePortSel = (PcieStrapFuse & B_PCH_PCR_FIA_STRPFUSECFG1_GBE_PCIEPORTSEL) >> N_PCH_PCR_FIA_STRPFUSECFG1_GBE_PCIEPORTSEL; + + switch (GbePortSel) { + case 0: return 3 + 1; + case 1: return 4 + 1; + case 2: return 5 + 1; + case 3: return 8 + 1; + case 4: return 11 + 1; + } + + DEBUG((DEBUG_ERROR, "Invalid GbE port\n")); + ASSERT (FALSE); + return 0; +} + +/** + Check whether LAN controller is enabled in the platform. + + @retval TRUE GbE is enabled + @retval FALSE GbE is disabled +**/ +BOOLEAN +PchIsGbePresent ( + VOID + ) +{ + + UINT32 SoftstrapVal; + EFI_SPI_PROTOCOL *SpiProtocol = NULL; + EFI_STATUS Status; + UINTN GbePciBase; + + if (PchIsDwrFlow() == TRUE) { + return FALSE; + } + + GbePciBase = MmPciBase ( + DEFAULT_PCI_BUS_NUMBER_PCH, + PCI_DEVICE_NUMBER_PCH_LAN, + PCI_FUNCTION_NUMBER_PCH_LAN + ); + + // + // Check GBE disable strap + // + Status = PeiServicesLocatePpi ( + &gPeiSpiPpiGuid, + 0, + NULL, + (VOID **) &SpiProtocol + ); + ASSERT_EFI_ERROR (Status); + + Status = SpiProtocol->ReadPchSoftStrap(SpiProtocol, 0x1DC, 4, &SoftstrapVal); + if (!EFI_ERROR(Status)) { + if ((SoftstrapVal & BIT14) == BIT14) { + return FALSE; + } + } + // + // Check FIA strap/fuse + // + if (PchGetGbePortNumber () == 0) { + return FALSE; + } + // + // Check GbE NVM + // + if (PchIsGbeRegionValid () == FALSE) { + return FALSE; + } + if (MmioRead32 (GbePciBase) == 0xFFFFFFFF) { + return FALSE; + } + return TRUE; +} + +/** + Check whether LAN controller is enabled in the platform. + + @deprecated Use PchIsGbePresent instead. + + @retval TRUE GbE is enabled + @retval FALSE GbE is disabled +**/ +BOOLEAN +PchIsGbeAvailable ( + VOID + ) +{ + return PchIsGbePresent (); +} + + |