diff options
author | zwei4 <david.wei@intel.com> | 2017-01-18 17:51:32 +0800 |
---|---|---|
committer | zwei4 <david.wei@intel.com> | 2017-01-18 17:51:32 +0800 |
commit | 3377d5baf9821727f753a900dc04594da3a9b19a (patch) | |
tree | bc377ff2e56c574d3ba304360efe134d4de9c9d9 | |
parent | 2c80b2462384e88722270c70bc5dea2d6e14e988 (diff) | |
download | edk2-platforms-3377d5baf9821727f753a900dc04594da3a9b19a.tar.xz |
Restore P2SB MMIO resource
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 <david.wei@intel.com>
Cc: Mike Wu <mike.wu@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Cc: Mang Guo <mang.guo@intel.com>
Cc: Shifei Lu <shifeix.a.lu@intel.com>
Cc: Ruth Li <ruth.li@intel.com>
Cc: Junjie He <junjie.he@intel.com>
-rw-r--r-- | Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c b/Silicon/BroxtonSoC/BroxtonSiPkg/SouthCluster/ScInit/Dxe/ScInit.c index 6fb6c8df48..c4a9d5088d 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);
|