Restore P2SB's, as well as GPIO controllers', MMIO resources to original values which have been overridden by PCI bus driver.
Signed-off-by: zwei4 <[email protected]> Cc: Mike Wu <[email protected]> Cc: Benjamin You <[email protected]> Cc: Mang Guo <[email protected]> Cc: Shifei Lu <[email protected]> Cc: Ruth Li <[email protected]> Cc: Junjie He <[email protected]> --- .../BroxtonSoC/BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c b/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c index 6fb6c8df4..c4a9d5088 100644 --- a/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c +++ b/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c @@ -1,7 +1,7 @@ /** @file This is the driver that initializes the Intel SC devices - Copyright (c) 1999 - 2016, Intel Corporation. All rights reserved.<BR> + Copyright (c) 1999 - 2017, 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 @@ -111,6 +111,16 @@ ScOnPciEnumComplete ( gBS->CloseEvent (Event); // + // Restore P2SB and GPIO controlers's Base Address to original value which is overridden by PCI BUS driver. + // P2SB will be switched to ACPI mode at exit boot service, so it's resource must be allocated from ACPI_MMIO_BASE_ADDRESS + // region, to avoid resource conflict with PCI resource used by PCI_HOST.asl. + // + MmioWrite32 ( + MmPciAddress (0, DEFAULT_PCI_BUS_NUMBER_SC, PCI_DEVICE_NUMBER_P2SB, PCI_FUNCTION_NUMBER_P2SB, R_P2SB_BASE), + (UINT32) ((PcdGet32 (PcdP2SBBaseAddress))) + ); + + // // Get SC PMC fuction disable reset HOB. // HobPtr.Guid = GetFirstGuidHob (&gScPmcFunctionDisableResetHobGuid); -- 2.11.0.windows.1 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
